/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/array-examples/standard_partial_init_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 03:45:40,061 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 03:45:40,066 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 03:45:40,124 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 03:45:40,125 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 03:45:40,131 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 03:45:40,134 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 03:45:40,139 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 03:45:40,143 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 03:45:40,149 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 03:45:40,150 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 03:45:40,152 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 03:45:40,152 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 03:45:40,155 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 03:45:40,158 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 03:45:40,160 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 03:45:40,161 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 03:45:40,165 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 03:45:40,173 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 03:45:40,180 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 03:45:40,183 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 03:45:40,184 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 03:45:40,186 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 03:45:40,189 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 03:45:40,200 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 03:45:40,200 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 03:45:40,200 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 03:45:40,204 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 03:45:40,204 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 03:45:40,206 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 03:45:40,206 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 03:45:40,207 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 03:45:40,209 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 03:45:40,210 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 03:45:40,211 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 03:45:40,212 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 03:45:40,212 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 03:45:40,213 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 03:45:40,213 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 03:45:40,214 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 03:45:40,215 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 03:45:40,223 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 03:45:40,270 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 03:45:40,271 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 03:45:40,275 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 03:45:40,275 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 03:45:40,276 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 03:45:40,276 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 03:45:40,276 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 03:45:40,276 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 03:45:40,277 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 03:45:40,277 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 03:45:40,278 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 03:45:40,278 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 03:45:40,278 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 03:45:40,279 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 03:45:40,279 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 03:45:40,298 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 03:45:40,298 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 03:45:40,298 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 03:45:40,299 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 03:45:40,299 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 03:45:40,299 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 03:45:40,299 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 03:45:40,302 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 03:45:40,303 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 03:45:40,303 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 03:45:40,303 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 03:45:40,303 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 03:45:40,304 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 03:45:40,304 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 03:45:40,304 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 03:45:40,684 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 03:45:40,721 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 03:45:40,724 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 03:45:40,726 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 03:45:40,726 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 03:45:40,727 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_partial_init_ground.i [2020-10-29 03:45:40,813 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f26cb4b66/e3a1c0d7741c47ad8be6a17f2794d9d4/FLAG10e0fecb2 [2020-10-29 03:45:41,373 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 03:45:41,374 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-examples/standard_partial_init_ground.i [2020-10-29 03:45:41,386 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f26cb4b66/e3a1c0d7741c47ad8be6a17f2794d9d4/FLAG10e0fecb2 [2020-10-29 03:45:41,720 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f26cb4b66/e3a1c0d7741c47ad8be6a17f2794d9d4 [2020-10-29 03:45:41,725 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 03:45:41,734 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 03:45:41,739 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 03:45:41,739 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 03:45:41,743 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 03:45:41,748 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:45:41" (1/1) ... [2020-10-29 03:45:41,765 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43cd0bed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:45:41, skipping insertion in model container [2020-10-29 03:45:41,765 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:45:41" (1/1) ... [2020-10-29 03:45:41,775 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 03:45:41,798 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 03:45:41,987 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:45:41,994 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 03:45:42,017 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:45:42,032 INFO L208 MainTranslator]: Completed translation [2020-10-29 03:45:42,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:45:42 WrapperNode [2020-10-29 03:45:42,033 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 03:45:42,034 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 03:45:42,034 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 03:45:42,034 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 03:45:42,045 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:45:42" (1/1) ... [2020-10-29 03:45:42,045 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:45:42" (1/1) ... [2020-10-29 03:45:42,053 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:45:42" (1/1) ... [2020-10-29 03:45:42,054 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:45:42" (1/1) ... [2020-10-29 03:45:42,062 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:45:42" (1/1) ... [2020-10-29 03:45:42,067 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:45:42" (1/1) ... [2020-10-29 03:45:42,069 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:45:42" (1/1) ... [2020-10-29 03:45:42,072 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 03:45:42,073 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 03:45:42,073 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 03:45:42,073 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 03:45:42,074 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:45:42" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 03:45:42,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 03:45:42,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 03:45:42,167 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 03:45:42,168 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 03:45:42,168 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 03:45:42,168 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 03:45:42,168 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 03:45:42,168 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-29 03:45:42,168 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-29 03:45:42,169 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 03:45:42,169 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 03:45:42,169 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 03:45:42,169 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 03:45:42,169 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 03:45:42,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 03:45:42,170 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 03:45:42,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 03:45:42,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 03:45:42,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 03:45:42,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 03:45:42,523 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 03:45:42,523 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-29 03:45:42,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:45:42 BoogieIcfgContainer [2020-10-29 03:45:42,532 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 03:45:42,534 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 03:45:42,534 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 03:45:42,541 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 03:45:42,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 03:45:41" (1/3) ... [2020-10-29 03:45:42,546 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@490c1df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:45:42, skipping insertion in model container [2020-10-29 03:45:42,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:45:42" (2/3) ... [2020-10-29 03:45:42,547 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@490c1df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:45:42, skipping insertion in model container [2020-10-29 03:45:42,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:45:42" (3/3) ... [2020-10-29 03:45:42,551 INFO L111 eAbstractionObserver]: Analyzing ICFG standard_partial_init_ground.i [2020-10-29 03:45:42,583 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 03:45:42,596 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 03:45:42,628 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 03:45:42,681 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 03:45:42,681 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 03:45:42,682 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 03:45:42,682 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 03:45:42,682 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 03:45:42,682 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 03:45:42,682 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 03:45:42,682 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 03:45:42,703 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-10-29 03:45:42,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-29 03:45:42,710 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:45:42,711 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:45:42,711 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:45:42,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:45:42,726 INFO L82 PathProgramCache]: Analyzing trace with hash -2137803700, now seen corresponding path program 1 times [2020-10-29 03:45:42,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:45:42,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2113865407] [2020-10-29 03:45:42,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:45:42,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:42,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:43,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:43,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:43,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:43,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-29 03:45:43,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:45:43,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 440 [2020-10-29 03:45:43,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:43,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:43,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 03:45:43,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:45:43,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:45:43,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 03:45:43,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:45:43,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:43,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:43,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:43,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:45:43,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:45:43,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 03:45:43,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:43,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:43,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:45:43,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:45:43,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:45:43,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:45:43,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:45:43,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2113865407] [2020-10-29 03:45:43,505 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:45:43,505 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 03:45:43,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813884593] [2020-10-29 03:45:43,512 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 03:45:43,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:45:43,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 03:45:43,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 03:45:43,532 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 5 states. [2020-10-29 03:45:43,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:45:43,744 INFO L93 Difference]: Finished difference Result 75 states and 105 transitions. [2020-10-29 03:45:43,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 03:45:43,746 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-29 03:45:43,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:45:43,755 INFO L225 Difference]: With dead ends: 75 [2020-10-29 03:45:43,755 INFO L226 Difference]: Without dead ends: 33 [2020-10-29 03:45:43,759 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 03:45:43,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-29 03:45:43,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-10-29 03:45:43,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-29 03:45:43,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2020-10-29 03:45:43,830 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 17 [2020-10-29 03:45:43,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:45:43,830 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2020-10-29 03:45:43,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 03:45:43,831 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2020-10-29 03:45:43,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-29 03:45:43,834 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:45:43,834 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:45:43,835 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 03:45:43,835 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:45:43,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:45:43,836 INFO L82 PathProgramCache]: Analyzing trace with hash -1719889192, now seen corresponding path program 1 times [2020-10-29 03:45:43,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:45:43,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [244178138] [2020-10-29 03:45:43,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:45:43,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:43,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:43,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:44,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:44,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:44,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:44,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:44,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 03:45:44,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:45:44,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1077 [2020-10-29 03:45:44,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:44,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:44,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:45:44,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:45:44,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 03:45:44,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 03:45:45,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:45:45,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:45,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:45,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:45,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:45:45,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:45:45,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:45:45,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:45,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:45,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:45:45,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:45:45,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:45:45,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:45:45,141 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:45:45,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [244178138] [2020-10-29 03:45:45,142 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:45:45,142 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 03:45:45,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304948027] [2020-10-29 03:45:45,144 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 03:45:45,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:45:45,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 03:45:45,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:45:45,146 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand 10 states. [2020-10-29 03:45:45,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:45:45,557 INFO L93 Difference]: Finished difference Result 64 states and 77 transitions. [2020-10-29 03:45:45,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 03:45:45,558 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2020-10-29 03:45:45,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:45:45,560 INFO L225 Difference]: With dead ends: 64 [2020-10-29 03:45:45,560 INFO L226 Difference]: Without dead ends: 60 [2020-10-29 03:45:45,562 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:45:45,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-29 03:45:45,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 43. [2020-10-29 03:45:45,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-29 03:45:45,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 52 transitions. [2020-10-29 03:45:45,577 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 52 transitions. Word has length 20 [2020-10-29 03:45:45,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:45:45,578 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 52 transitions. [2020-10-29 03:45:45,578 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 03:45:45,578 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 52 transitions. [2020-10-29 03:45:45,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-29 03:45:45,579 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:45:45,579 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:45:45,580 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 03:45:45,580 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:45:45,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:45:45,581 INFO L82 PathProgramCache]: Analyzing trace with hash 786393820, now seen corresponding path program 1 times [2020-10-29 03:45:45,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:45:45,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1015179595] [2020-10-29 03:45:45,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:45:45,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:45,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:45,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:45,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:45,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:45,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:46,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:47,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:47,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-29 03:45:47,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:45:47,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1549 [2020-10-29 03:45:47,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:47,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:47,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:45:47,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:45:47,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 03:45:47,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 03:45:47,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:45:47,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:47,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:47,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:47,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:45:47,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:45:47,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 03:45:47,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:47,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:47,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:45:47,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:45:47,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:45:47,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:45:47,379 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:45:47,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1015179595] [2020-10-29 03:45:47,380 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:45:47,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 03:45:47,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388932675] [2020-10-29 03:45:47,381 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 03:45:47,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:45:47,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 03:45:47,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:45:47,383 INFO L87 Difference]: Start difference. First operand 43 states and 52 transitions. Second operand 10 states. [2020-10-29 03:45:47,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:45:47,729 INFO L93 Difference]: Finished difference Result 109 states and 136 transitions. [2020-10-29 03:45:47,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 03:45:47,730 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 22 [2020-10-29 03:45:47,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:45:47,734 INFO L225 Difference]: With dead ends: 109 [2020-10-29 03:45:47,734 INFO L226 Difference]: Without dead ends: 74 [2020-10-29 03:45:47,735 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:45:47,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-29 03:45:47,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 63. [2020-10-29 03:45:47,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-29 03:45:47,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 79 transitions. [2020-10-29 03:45:47,756 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 79 transitions. Word has length 22 [2020-10-29 03:45:47,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:45:47,756 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 79 transitions. [2020-10-29 03:45:47,756 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 03:45:47,757 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 79 transitions. [2020-10-29 03:45:47,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-29 03:45:47,761 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:45:47,761 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:45:47,762 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 03:45:47,763 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:45:47,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:45:47,764 INFO L82 PathProgramCache]: Analyzing trace with hash -268646983, now seen corresponding path program 1 times [2020-10-29 03:45:47,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:45:47,765 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [970390879] [2020-10-29 03:45:47,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:45:47,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:47,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:47,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:47,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:48,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:48,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:50,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:50,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 03:45:50,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:45:50,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2457 [2020-10-29 03:45:50,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:50,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:50,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:45:50,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:45:50,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 03:45:50,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:45:50,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:45:50,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:50,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:50,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:50,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:45:50,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:45:50,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:45:50,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:50,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:50,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:45:50,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:45:50,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:45:50,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:50,514 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 03:45:50,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [970390879] [2020-10-29 03:45:50,514 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:45:50,515 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 03:45:50,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915184953] [2020-10-29 03:45:50,515 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 03:45:50,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:45:50,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 03:45:50,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:45:50,517 INFO L87 Difference]: Start difference. First operand 63 states and 79 transitions. Second operand 12 states. [2020-10-29 03:45:51,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:45:51,240 INFO L93 Difference]: Finished difference Result 108 states and 131 transitions. [2020-10-29 03:45:51,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 03:45:51,241 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 25 [2020-10-29 03:45:51,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:45:51,243 INFO L225 Difference]: With dead ends: 108 [2020-10-29 03:45:51,243 INFO L226 Difference]: Without dead ends: 104 [2020-10-29 03:45:51,244 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2020-10-29 03:45:51,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-29 03:45:51,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 67. [2020-10-29 03:45:51,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-29 03:45:51,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 82 transitions. [2020-10-29 03:45:51,259 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 82 transitions. Word has length 25 [2020-10-29 03:45:51,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:45:51,259 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 82 transitions. [2020-10-29 03:45:51,259 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 03:45:51,259 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 82 transitions. [2020-10-29 03:45:51,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-29 03:45:51,261 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:45:51,261 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:45:51,261 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 03:45:51,261 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:45:51,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:45:51,262 INFO L82 PathProgramCache]: Analyzing trace with hash -434214531, now seen corresponding path program 1 times [2020-10-29 03:45:51,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:45:51,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1246862367] [2020-10-29 03:45:51,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:45:51,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:51,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:51,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:51,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:51,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:52,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:52,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:55,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:55,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-29 03:45:55,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:45:55,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4399 [2020-10-29 03:45:55,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:55,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:55,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 03:45:55,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:45:55,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 03:45:55,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:45:55,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:45:55,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:55,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:55,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:55,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:45:55,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:45:55,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:45:55,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:55,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:55,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:45:55,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:45:55,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:45:55,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:45:56,004 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 03:45:56,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1246862367] [2020-10-29 03:45:56,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:45:56,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 03:45:56,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456246845] [2020-10-29 03:45:56,006 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 03:45:56,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:45:56,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 03:45:56,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:45:56,007 INFO L87 Difference]: Start difference. First operand 67 states and 82 transitions. Second operand 11 states. [2020-10-29 03:45:56,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:45:56,580 INFO L93 Difference]: Finished difference Result 108 states and 131 transitions. [2020-10-29 03:45:56,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 03:45:56,581 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-10-29 03:45:56,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:45:56,585 INFO L225 Difference]: With dead ends: 108 [2020-10-29 03:45:56,585 INFO L226 Difference]: Without dead ends: 104 [2020-10-29 03:45:56,588 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2020-10-29 03:45:56,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-29 03:45:56,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 73. [2020-10-29 03:45:56,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-29 03:45:56,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 92 transitions. [2020-10-29 03:45:56,621 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 92 transitions. Word has length 27 [2020-10-29 03:45:56,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:45:56,624 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 92 transitions. [2020-10-29 03:45:56,625 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 03:45:56,625 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 92 transitions. [2020-10-29 03:45:56,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-29 03:45:56,629 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:45:56,629 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 03:45:56,629 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 03:45:56,629 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:45:56,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:45:56,630 INFO L82 PathProgramCache]: Analyzing trace with hash -1455282885, now seen corresponding path program 1 times [2020-10-29 03:45:56,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:45:56,631 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [262275712] [2020-10-29 03:45:56,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:45:56,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:56,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:56,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:56,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:56,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:57,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:57,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:59,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:59,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-29 03:45:59,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:45:59,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2907 [2020-10-29 03:45:59,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:59,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:59,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 03:45:59,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:45:59,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 03:45:59,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 03:45:59,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:45:59,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:59,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:59,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:59,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:45:59,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:45:59,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:45:59,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:59,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:59,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:45:59,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:45:59,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:45:59,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:45:59,826 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 03:45:59,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [262275712] [2020-10-29 03:45:59,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:45:59,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 03:45:59,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026721497] [2020-10-29 03:45:59,828 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 03:45:59,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:45:59,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 03:45:59,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:45:59,832 INFO L87 Difference]: Start difference. First operand 73 states and 92 transitions. Second operand 11 states. [2020-10-29 03:46:00,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:46:00,243 INFO L93 Difference]: Finished difference Result 170 states and 217 transitions. [2020-10-29 03:46:00,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 03:46:00,244 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-10-29 03:46:00,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:46:00,247 INFO L225 Difference]: With dead ends: 170 [2020-10-29 03:46:00,247 INFO L226 Difference]: Without dead ends: 106 [2020-10-29 03:46:00,249 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2020-10-29 03:46:00,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-29 03:46:00,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 78. [2020-10-29 03:46:00,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-29 03:46:00,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 98 transitions. [2020-10-29 03:46:00,279 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 98 transitions. Word has length 27 [2020-10-29 03:46:00,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:46:00,279 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 98 transitions. [2020-10-29 03:46:00,280 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 03:46:00,280 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 98 transitions. [2020-10-29 03:46:00,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-29 03:46:00,282 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:46:00,282 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:46:00,282 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 03:46:00,283 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:46:00,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:46:00,283 INFO L82 PathProgramCache]: Analyzing trace with hash 1360219580, now seen corresponding path program 2 times [2020-10-29 03:46:00,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:46:00,284 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1949631245] [2020-10-29 03:46:00,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:46:00,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:46:00,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:00,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:00,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:00,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:01,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:04,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:46:04,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 03:46:04,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:46:04,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4204 [2020-10-29 03:46:04,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:46:04,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:46:04,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 03:46:04,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:46:04,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 03:46:04,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:46:04,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:46:04,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:46:04,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:04,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:46:04,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:46:04,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:46:04,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 03:46:04,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:46:04,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:46:04,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:46:04,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:46:04,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:46:04,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:46:04,836 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 03:46:04,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1949631245] [2020-10-29 03:46:04,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:46:04,837 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 03:46:04,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260514779] [2020-10-29 03:46:04,838 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 03:46:04,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:46:04,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 03:46:04,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:46:04,840 INFO L87 Difference]: Start difference. First operand 78 states and 98 transitions. Second operand 13 states. [2020-10-29 03:46:05,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:46:05,960 INFO L93 Difference]: Finished difference Result 164 states and 203 transitions. [2020-10-29 03:46:05,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 03:46:05,961 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 30 [2020-10-29 03:46:05,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:46:05,964 INFO L225 Difference]: With dead ends: 164 [2020-10-29 03:46:05,964 INFO L226 Difference]: Without dead ends: 145 [2020-10-29 03:46:05,965 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=123, Invalid=477, Unknown=0, NotChecked=0, Total=600 [2020-10-29 03:46:05,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-10-29 03:46:05,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 93. [2020-10-29 03:46:06,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-29 03:46:06,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 118 transitions. [2020-10-29 03:46:06,004 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 118 transitions. Word has length 30 [2020-10-29 03:46:06,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:46:06,005 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 118 transitions. [2020-10-29 03:46:06,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 03:46:06,005 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 118 transitions. [2020-10-29 03:46:06,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-29 03:46:06,009 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:46:06,009 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:46:06,010 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 03:46:06,010 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:46:06,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:46:06,010 INFO L82 PathProgramCache]: Analyzing trace with hash -228128322, now seen corresponding path program 1 times [2020-10-29 03:46:06,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:46:06,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1858858727] [2020-10-29 03:46:06,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:46:06,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:46:06,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:06,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:06,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:06,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:06,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:10,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:46:10,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 03:46:10,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:46:10,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4019 [2020-10-29 03:46:10,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:46:10,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:46:10,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:46:10,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:46:10,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 03:46:10,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:46:10,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:46:10,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:46:10,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:10,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:46:10,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:46:10,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:46:10,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 03:46:10,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:46:10,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:46:10,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:46:10,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:46:10,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:46:10,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:46:10,329 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-29 03:46:10,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1858858727] [2020-10-29 03:46:10,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:46:10,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 03:46:10,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684597934] [2020-10-29 03:46:10,331 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 03:46:10,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:46:10,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 03:46:10,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:46:10,340 INFO L87 Difference]: Start difference. First operand 93 states and 118 transitions. Second operand 12 states. [2020-10-29 03:46:10,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:46:10,771 INFO L93 Difference]: Finished difference Result 119 states and 146 transitions. [2020-10-29 03:46:10,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 03:46:10,771 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 30 [2020-10-29 03:46:10,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:46:10,775 INFO L225 Difference]: With dead ends: 119 [2020-10-29 03:46:10,775 INFO L226 Difference]: Without dead ends: 115 [2020-10-29 03:46:10,775 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:46:10,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-29 03:46:10,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 89. [2020-10-29 03:46:10,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-29 03:46:10,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 112 transitions. [2020-10-29 03:46:10,802 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 112 transitions. Word has length 30 [2020-10-29 03:46:10,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:46:10,803 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 112 transitions. [2020-10-29 03:46:10,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 03:46:10,803 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 112 transitions. [2020-10-29 03:46:10,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-29 03:46:10,807 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:46:10,807 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:46:10,807 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 03:46:10,807 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:46:10,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:46:10,808 INFO L82 PathProgramCache]: Analyzing trace with hash 994496614, now seen corresponding path program 1 times [2020-10-29 03:46:10,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:46:10,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [881045850] [2020-10-29 03:46:10,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:46:10,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:46:10,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:10,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:10,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:11,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:46:11,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-29 03:46:11,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:46:11,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1158 [2020-10-29 03:46:11,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:46:11,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:46:11,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 03:46:11,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:46:11,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 03:46:11,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:46:12,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:46:12,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:46:12,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:12,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:46:12,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:46:12,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:46:12,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:46:12,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:46:12,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:46:12,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:46:12,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:46:12,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:46:12,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:46:12,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-29 03:46:12,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:46:12,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:12,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:46:12,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:46:12,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:46:12,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:46:12,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:46:12,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:46:12,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:46:12,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:46:12,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:46:12,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:46:12,068 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 03:46:12,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [881045850] [2020-10-29 03:46:12,069 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:46:12,069 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 03:46:12,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20397070] [2020-10-29 03:46:12,070 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 03:46:12,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:46:12,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 03:46:12,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-29 03:46:12,071 INFO L87 Difference]: Start difference. First operand 89 states and 112 transitions. Second operand 7 states. [2020-10-29 03:46:12,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:46:12,260 INFO L93 Difference]: Finished difference Result 137 states and 169 transitions. [2020-10-29 03:46:12,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 03:46:12,261 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 32 [2020-10-29 03:46:12,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:46:12,263 INFO L225 Difference]: With dead ends: 137 [2020-10-29 03:46:12,263 INFO L226 Difference]: Without dead ends: 90 [2020-10-29 03:46:12,264 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-29 03:46:12,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-29 03:46:12,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2020-10-29 03:46:12,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-29 03:46:12,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 108 transitions. [2020-10-29 03:46:12,283 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 108 transitions. Word has length 32 [2020-10-29 03:46:12,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:46:12,284 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 108 transitions. [2020-10-29 03:46:12,284 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 03:46:12,284 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 108 transitions. [2020-10-29 03:46:12,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-29 03:46:12,290 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:46:12,290 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:46:12,290 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 03:46:12,290 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:46:12,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:46:12,291 INFO L82 PathProgramCache]: Analyzing trace with hash 1538456768, now seen corresponding path program 2 times [2020-10-29 03:46:12,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:46:12,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2060670628] [2020-10-29 03:46:12,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:46:12,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:46:12,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:12,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:12,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:12,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:13,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:14,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:17,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:46:17,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-29 03:46:17,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:46:17,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 03:46:17,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:46:17,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:46:17,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 03:46:17,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:46:17,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 03:46:17,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:46:17,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:46:17,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:46:17,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:17,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:46:17,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:46:17,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:46:17,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:46:17,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:46:17,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:46:17,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:46:17,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:46:17,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:46:17,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:46:17,403 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 03:46:17,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2060670628] [2020-10-29 03:46:17,404 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:46:17,404 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 03:46:17,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565818959] [2020-10-29 03:46:17,405 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 03:46:17,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:46:17,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 03:46:17,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-29 03:46:17,406 INFO L87 Difference]: Start difference. First operand 90 states and 108 transitions. Second operand 8 states. [2020-10-29 03:46:17,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:46:17,658 INFO L93 Difference]: Finished difference Result 124 states and 150 transitions. [2020-10-29 03:46:17,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 03:46:17,658 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2020-10-29 03:46:17,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:46:17,660 INFO L225 Difference]: With dead ends: 124 [2020-10-29 03:46:17,660 INFO L226 Difference]: Without dead ends: 111 [2020-10-29 03:46:17,661 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-10-29 03:46:17,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-29 03:46:17,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 95. [2020-10-29 03:46:17,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-29 03:46:17,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 115 transitions. [2020-10-29 03:46:17,676 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 115 transitions. Word has length 32 [2020-10-29 03:46:17,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:46:17,676 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 115 transitions. [2020-10-29 03:46:17,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 03:46:17,676 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 115 transitions. [2020-10-29 03:46:17,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-29 03:46:17,677 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:46:17,677 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:46:17,677 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 03:46:17,682 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:46:17,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:46:17,683 INFO L82 PathProgramCache]: Analyzing trace with hash -150486974, now seen corresponding path program 2 times [2020-10-29 03:46:17,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:46:17,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [647721490] [2020-10-29 03:46:17,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:46:17,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:46:17,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:17,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:17,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:17,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:18,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:19,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:22,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:46:22,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-29 03:46:22,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:46:22,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 03:46:22,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:46:22,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:46:22,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 03:46:22,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:46:22,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 03:46:22,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:46:22,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:46:22,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:46:22,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:22,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:46:22,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:46:22,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:46:22,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:46:22,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:46:22,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:46:22,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:46:22,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:46:22,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:46:22,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:46:22,781 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-29 03:46:22,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [647721490] [2020-10-29 03:46:22,781 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:46:22,781 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 03:46:22,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095992672] [2020-10-29 03:46:22,782 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 03:46:22,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:46:22,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 03:46:22,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 03:46:22,783 INFO L87 Difference]: Start difference. First operand 95 states and 115 transitions. Second operand 7 states. [2020-10-29 03:46:22,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:46:22,948 INFO L93 Difference]: Finished difference Result 123 states and 144 transitions. [2020-10-29 03:46:22,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 03:46:22,949 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 32 [2020-10-29 03:46:22,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:46:22,951 INFO L225 Difference]: With dead ends: 123 [2020-10-29 03:46:22,951 INFO L226 Difference]: Without dead ends: 103 [2020-10-29 03:46:22,952 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-29 03:46:22,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-29 03:46:22,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 90. [2020-10-29 03:46:22,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-29 03:46:22,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 106 transitions. [2020-10-29 03:46:22,965 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 106 transitions. Word has length 32 [2020-10-29 03:46:22,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:46:22,966 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 106 transitions. [2020-10-29 03:46:22,966 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 03:46:22,966 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 106 transitions. [2020-10-29 03:46:22,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-29 03:46:22,966 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:46:22,967 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:46:22,967 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 03:46:22,967 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:46:22,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:46:22,968 INFO L82 PathProgramCache]: Analyzing trace with hash -2015565791, now seen corresponding path program 2 times [2020-10-29 03:46:22,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:46:22,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1154680881] [2020-10-29 03:46:22,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:46:22,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:46:22,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:23,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:23,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:23,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:23,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:25,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:26,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:46:26,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-29 03:46:26,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:46:26,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3310 [2020-10-29 03:46:26,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:46:26,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:46:26,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:46:26,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:46:26,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-29 03:46:26,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:46:26,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:46:26,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:46:26,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:26,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:46:26,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:46:26,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:46:26,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:46:26,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:46:26,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:46:26,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:46:26,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:46:26,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:46:26,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:46:26,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-29 03:46:26,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:46:26,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:26,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:46:26,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:46:26,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:46:26,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:46:26,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:46:26,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:46:26,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:46:26,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:46:26,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:46:26,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:46:26,498 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 03:46:26,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1154680881] [2020-10-29 03:46:26,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:46:26,499 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 03:46:26,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160328307] [2020-10-29 03:46:26,500 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 03:46:26,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:46:26,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 03:46:26,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:46:26,501 INFO L87 Difference]: Start difference. First operand 90 states and 106 transitions. Second operand 12 states. [2020-10-29 03:46:27,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:46:27,237 INFO L93 Difference]: Finished difference Result 123 states and 145 transitions. [2020-10-29 03:46:27,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 03:46:27,237 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 35 [2020-10-29 03:46:27,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:46:27,240 INFO L225 Difference]: With dead ends: 123 [2020-10-29 03:46:27,240 INFO L226 Difference]: Without dead ends: 119 [2020-10-29 03:46:27,241 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:46:27,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-10-29 03:46:27,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 104. [2020-10-29 03:46:27,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-29 03:46:27,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 124 transitions. [2020-10-29 03:46:27,256 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 124 transitions. Word has length 35 [2020-10-29 03:46:27,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:46:27,256 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 124 transitions. [2020-10-29 03:46:27,256 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 03:46:27,256 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 124 transitions. [2020-10-29 03:46:27,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-29 03:46:27,257 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:46:27,257 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:46:27,257 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 03:46:27,257 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:46:27,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:46:27,258 INFO L82 PathProgramCache]: Analyzing trace with hash -162499962, now seen corresponding path program 3 times [2020-10-29 03:46:27,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:46:27,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [950146240] [2020-10-29 03:46:27,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:46:27,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:46:27,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:27,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:27,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:27,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:27,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:28,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:32,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:46:32,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 03:46:32,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:46:32,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 03:46:32,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:46:32,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:46:32,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:46:32,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:46:32,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 03:46:32,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:46:32,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:46:32,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:46:32,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:32,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:46:32,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:46:32,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:46:32,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:46:32,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:46:32,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:46:32,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:46:32,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:46:32,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:46:32,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:46:32,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-29 03:46:32,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:46:32,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:32,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:46:32,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:46:32,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:46:32,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:46:32,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:46:32,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:46:32,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:46:32,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:46:32,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:46:32,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:46:32,503 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 03:46:32,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [950146240] [2020-10-29 03:46:32,504 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:46:32,504 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 03:46:32,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658674749] [2020-10-29 03:46:32,505 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 03:46:32,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:46:32,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 03:46:32,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:46:32,506 INFO L87 Difference]: Start difference. First operand 104 states and 124 transitions. Second operand 14 states. [2020-10-29 03:46:33,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:46:33,165 INFO L93 Difference]: Finished difference Result 147 states and 173 transitions. [2020-10-29 03:46:33,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 03:46:33,165 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 38 [2020-10-29 03:46:33,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:46:33,167 INFO L225 Difference]: With dead ends: 147 [2020-10-29 03:46:33,167 INFO L226 Difference]: Without dead ends: 143 [2020-10-29 03:46:33,168 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:46:33,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-10-29 03:46:33,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 112. [2020-10-29 03:46:33,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-29 03:46:33,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 133 transitions. [2020-10-29 03:46:33,190 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 133 transitions. Word has length 38 [2020-10-29 03:46:33,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:46:33,190 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 133 transitions. [2020-10-29 03:46:33,190 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 03:46:33,190 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 133 transitions. [2020-10-29 03:46:33,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-29 03:46:33,191 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:46:33,191 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:46:33,192 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 03:46:33,192 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:46:33,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:46:33,192 INFO L82 PathProgramCache]: Analyzing trace with hash -1506142454, now seen corresponding path program 1 times [2020-10-29 03:46:33,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:46:33,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [621329273] [2020-10-29 03:46:33,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:46:33,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:46:33,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:33,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:33,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:33,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:33,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:35,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:35,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:38,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:46:38,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-29 03:46:38,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 03:46:38,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 03:46:38,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:46:38,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:46:38,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 03:46:38,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:46:38,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 03:46:38,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:46:38,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:46:38,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:46:38,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:38,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:46:38,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:46:38,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:46:38,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:46:38,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:46:38,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:46:38,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:46:38,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:46:38,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:46:38,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:46:38,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-29 03:46:38,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:46:38,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:38,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:46:38,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:46:38,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:46:38,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:46:38,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:46:38,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:46:38,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:46:38,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:46:38,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:46:38,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:46:38,297 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 03:46:38,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [621329273] [2020-10-29 03:46:38,297 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:46:38,298 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 03:46:38,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658757364] [2020-10-29 03:46:38,298 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 03:46:38,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:46:38,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 03:46:38,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-29 03:46:38,299 INFO L87 Difference]: Start difference. First operand 112 states and 133 transitions. Second operand 9 states. [2020-10-29 03:46:38,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:46:38,646 INFO L93 Difference]: Finished difference Result 148 states and 173 transitions. [2020-10-29 03:46:38,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 03:46:38,646 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 40 [2020-10-29 03:46:38,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:46:38,648 INFO L225 Difference]: With dead ends: 148 [2020-10-29 03:46:38,648 INFO L226 Difference]: Without dead ends: 135 [2020-10-29 03:46:38,649 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:46:38,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-10-29 03:46:38,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 112. [2020-10-29 03:46:38,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-29 03:46:38,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 132 transitions. [2020-10-29 03:46:38,664 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 132 transitions. Word has length 40 [2020-10-29 03:46:38,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:46:38,665 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 132 transitions. [2020-10-29 03:46:38,665 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 03:46:38,665 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 132 transitions. [2020-10-29 03:46:38,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-29 03:46:38,666 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:46:38,666 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:46:38,666 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 03:46:38,666 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:46:38,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:46:38,667 INFO L82 PathProgramCache]: Analyzing trace with hash 417085580, now seen corresponding path program 1 times [2020-10-29 03:46:38,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:46:38,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [682348572] [2020-10-29 03:46:38,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:46:38,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:46:38,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:38,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:38,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:38,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:39,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:39,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:41,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:43,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:46:43,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-29 03:46:43,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 03:46:43,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 03:46:43,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:46:43,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:46:43,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 03:46:43,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:46:43,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 03:46:43,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:46:43,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:46:43,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:46:43,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:43,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:46:43,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:46:43,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:46:43,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:46:43,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:46:43,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:46:43,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:46:43,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:46:43,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:46:43,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:46:43,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-29 03:46:43,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:46:43,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:43,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:46:43,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:46:43,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:46:43,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:46:43,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:46:43,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:46:43,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:46:43,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:46:43,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:46:43,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:46:43,762 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-29 03:46:43,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [682348572] [2020-10-29 03:46:43,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:46:43,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 03:46:43,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320153887] [2020-10-29 03:46:43,764 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 03:46:43,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:46:43,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 03:46:43,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 03:46:43,764 INFO L87 Difference]: Start difference. First operand 112 states and 132 transitions. Second operand 8 states. [2020-10-29 03:46:43,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:46:43,982 INFO L93 Difference]: Finished difference Result 143 states and 166 transitions. [2020-10-29 03:46:43,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 03:46:43,983 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 40 [2020-10-29 03:46:43,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:46:43,984 INFO L225 Difference]: With dead ends: 143 [2020-10-29 03:46:43,984 INFO L226 Difference]: Without dead ends: 123 [2020-10-29 03:46:43,985 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:46:43,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-10-29 03:46:44,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 118. [2020-10-29 03:46:44,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-29 03:46:44,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 138 transitions. [2020-10-29 03:46:44,005 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 138 transitions. Word has length 40 [2020-10-29 03:46:44,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:46:44,005 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 138 transitions. [2020-10-29 03:46:44,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 03:46:44,005 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 138 transitions. [2020-10-29 03:46:44,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-29 03:46:44,008 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:46:44,008 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:46:44,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 03:46:44,008 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:46:44,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:46:44,009 INFO L82 PathProgramCache]: Analyzing trace with hash 283072074, now seen corresponding path program 2 times [2020-10-29 03:46:44,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:46:44,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1194560047] [2020-10-29 03:46:44,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:46:44,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:46:44,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:44,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:44,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:44,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:44,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:45,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:46,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:46:46,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-29 03:46:46,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:46:46,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2791 [2020-10-29 03:46:46,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:46:46,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:46:46,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 03:46:46,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:46:46,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 03:46:46,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:46:46,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:46:46,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:46:46,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:46,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:46:46,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:46:46,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:46:46,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:46:46,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:46:46,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:46:46,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:46:46,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:46:46,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:46:46,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:46:46,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-29 03:46:46,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:46:46,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:46,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:46:46,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:46:46,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:46:46,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:46:46,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:46:46,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:46:46,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:46:46,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:46:46,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:46:46,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:46:46,990 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-29 03:46:46,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1194560047] [2020-10-29 03:46:46,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:46:46,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 03:46:46,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980963017] [2020-10-29 03:46:46,991 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 03:46:46,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:46:46,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 03:46:46,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:46:46,992 INFO L87 Difference]: Start difference. First operand 118 states and 138 transitions. Second operand 11 states. [2020-10-29 03:46:47,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:46:47,435 INFO L93 Difference]: Finished difference Result 147 states and 171 transitions. [2020-10-29 03:46:47,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 03:46:47,438 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 40 [2020-10-29 03:46:47,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:46:47,439 INFO L225 Difference]: With dead ends: 147 [2020-10-29 03:46:47,441 INFO L226 Difference]: Without dead ends: 130 [2020-10-29 03:46:47,442 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:46:47,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-29 03:46:47,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 120. [2020-10-29 03:46:47,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-29 03:46:47,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 140 transitions. [2020-10-29 03:46:47,466 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 140 transitions. Word has length 40 [2020-10-29 03:46:47,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:46:47,467 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 140 transitions. [2020-10-29 03:46:47,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 03:46:47,467 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 140 transitions. [2020-10-29 03:46:47,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-29 03:46:47,468 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:46:47,468 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:46:47,468 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 03:46:47,468 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:46:47,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:46:47,469 INFO L82 PathProgramCache]: Analyzing trace with hash -34363513, now seen corresponding path program 3 times [2020-10-29 03:46:47,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:46:47,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1060859509] [2020-10-29 03:46:47,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:46:47,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:46:47,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:47,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:47,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:47,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:48,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:48,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:50,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:46:50,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-29 03:46:50,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:46:50,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3463 [2020-10-29 03:46:50,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:46:50,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:46:50,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:46:50,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:46:50,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-29 03:46:50,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:46:51,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:46:51,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:46:51,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:51,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:46:51,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:46:51,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:46:51,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:46:51,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:46:51,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:46:51,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:46:51,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:46:51,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:46:51,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:46:51,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-29 03:46:51,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:46:51,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:51,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:46:51,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:46:51,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:46:51,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:46:51,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:46:51,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:46:51,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:46:51,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:46:51,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:46:51,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:46:51,227 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-29 03:46:51,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1060859509] [2020-10-29 03:46:51,228 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:46:51,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 03:46:51,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976503011] [2020-10-29 03:46:51,229 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 03:46:51,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:46:51,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 03:46:51,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:46:51,230 INFO L87 Difference]: Start difference. First operand 120 states and 140 transitions. Second operand 12 states. [2020-10-29 03:46:51,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:46:51,679 INFO L93 Difference]: Finished difference Result 130 states and 149 transitions. [2020-10-29 03:46:51,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 03:46:51,681 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 43 [2020-10-29 03:46:51,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:46:51,682 INFO L225 Difference]: With dead ends: 130 [2020-10-29 03:46:51,682 INFO L226 Difference]: Without dead ends: 109 [2020-10-29 03:46:51,682 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:46:51,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-29 03:46:51,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 99. [2020-10-29 03:46:51,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-29 03:46:51,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 116 transitions. [2020-10-29 03:46:51,699 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 116 transitions. Word has length 43 [2020-10-29 03:46:51,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:46:51,700 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 116 transitions. [2020-10-29 03:46:51,700 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 03:46:51,700 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 116 transitions. [2020-10-29 03:46:51,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-29 03:46:51,701 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:46:51,701 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:46:51,701 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 03:46:51,701 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:46:51,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:46:51,701 INFO L82 PathProgramCache]: Analyzing trace with hash -1406587568, now seen corresponding path program 4 times [2020-10-29 03:46:51,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:46:51,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [420092955] [2020-10-29 03:46:51,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:46:51,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:46:51,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:51,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:51,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:52,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:52,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:52,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:55,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:56,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:46:56,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-29 03:46:56,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 03:46:56,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4442 [2020-10-29 03:46:56,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:46:56,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:46:56,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:46:56,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:46:56,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 03:46:56,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:46:56,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:46:56,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:46:56,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:56,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:46:56,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:46:56,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:46:56,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:46:56,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:46:56,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:46:56,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:46:56,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:46:56,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:46:56,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:46:56,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-29 03:46:56,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:46:56,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:56,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:46:56,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:46:56,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:46:56,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:46:56,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:46:56,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:46:56,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:46:56,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:46:56,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:46:56,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:46:56,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 03:46:56,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:46:56,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:56,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:46:56,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:46:56,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:46:56,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:46:56,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:46:56,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:46:56,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:46:56,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:46:56,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:46:56,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:46:56,393 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-29 03:46:56,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [420092955] [2020-10-29 03:46:56,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:46:56,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 03:46:56,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285818145] [2020-10-29 03:46:56,394 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 03:46:56,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:46:56,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 03:46:56,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:46:56,395 INFO L87 Difference]: Start difference. First operand 99 states and 116 transitions. Second operand 14 states. [2020-10-29 03:46:57,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:46:57,367 INFO L93 Difference]: Finished difference Result 160 states and 189 transitions. [2020-10-29 03:46:57,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 03:46:57,367 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 46 [2020-10-29 03:46:57,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:46:57,372 INFO L225 Difference]: With dead ends: 160 [2020-10-29 03:46:57,372 INFO L226 Difference]: Without dead ends: 156 [2020-10-29 03:46:57,373 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=133, Invalid=517, Unknown=0, NotChecked=0, Total=650 [2020-10-29 03:46:57,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-10-29 03:46:57,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 117. [2020-10-29 03:46:57,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-29 03:46:57,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 139 transitions. [2020-10-29 03:46:57,394 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 139 transitions. Word has length 46 [2020-10-29 03:46:57,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:46:57,395 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 139 transitions. [2020-10-29 03:46:57,395 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 03:46:57,395 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 139 transitions. [2020-10-29 03:46:57,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-29 03:46:57,396 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:46:57,396 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:46:57,396 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 03:46:57,396 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:46:57,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:46:57,397 INFO L82 PathProgramCache]: Analyzing trace with hash 1221543764, now seen corresponding path program 2 times [2020-10-29 03:46:57,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:46:57,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [615438516] [2020-10-29 03:46:57,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:46:57,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:46:57,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:57,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:57,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:58,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:59,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:59,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:59,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:01,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:01,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:02,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:47:02,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-29 03:47:02,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 03:47:02,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 03:47:02,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:47:02,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:47:02,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:47:02,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:47:02,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-29 03:47:02,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:47:02,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:47:02,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:47:02,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:02,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:47:02,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:47:02,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:47:02,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 03:47:02,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:47:02,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:47:02,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:47:02,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:47:02,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:47:02,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:47:02,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-29 03:47:02,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:47:02,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:02,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:47:02,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:47:02,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:47:02,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:47:02,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:47:02,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:47:02,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:47:02,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:47:02,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:47:02,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:47:02,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 03:47:02,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:47:02,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:02,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:47:02,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:47:02,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:47:02,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:47:02,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:47:02,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:47:02,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:47:02,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:47:02,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:47:02,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:47:02,531 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-29 03:47:02,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [615438516] [2020-10-29 03:47:02,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:47:02,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 03:47:02,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69590133] [2020-10-29 03:47:02,534 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 03:47:02,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:47:02,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 03:47:02,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:47:02,536 INFO L87 Difference]: Start difference. First operand 117 states and 139 transitions. Second operand 10 states. [2020-10-29 03:47:02,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:47:02,876 INFO L93 Difference]: Finished difference Result 155 states and 183 transitions. [2020-10-29 03:47:02,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 03:47:02,877 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 48 [2020-10-29 03:47:02,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:47:02,878 INFO L225 Difference]: With dead ends: 155 [2020-10-29 03:47:02,879 INFO L226 Difference]: Without dead ends: 142 [2020-10-29 03:47:02,879 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-29 03:47:02,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-10-29 03:47:02,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 123. [2020-10-29 03:47:02,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-29 03:47:02,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 145 transitions. [2020-10-29 03:47:02,896 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 145 transitions. Word has length 48 [2020-10-29 03:47:02,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:47:02,896 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 145 transitions. [2020-10-29 03:47:02,897 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 03:47:02,897 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 145 transitions. [2020-10-29 03:47:02,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-29 03:47:02,897 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:47:02,898 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:47:02,899 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 03:47:02,899 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:47:02,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:47:02,900 INFO L82 PathProgramCache]: Analyzing trace with hash 377538262, now seen corresponding path program 4 times [2020-10-29 03:47:02,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:47:02,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [465658435] [2020-10-29 03:47:02,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:47:02,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:47:02,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:02,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:03,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:03,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:03,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:03,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:04,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:04,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:05,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:47:05,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-29 03:47:05,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 03:47:05,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2767 [2020-10-29 03:47:05,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:47:05,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:47:05,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:47:05,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:47:05,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 03:47:05,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:47:05,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:47:05,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:47:05,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:05,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:47:05,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:47:05,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:47:05,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:47:05,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:47:05,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:47:05,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:47:05,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:47:05,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:47:05,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:47:05,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-29 03:47:05,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:47:05,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:05,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:47:05,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:47:05,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:47:05,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:47:05,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:47:05,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:47:05,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:47:05,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:47:05,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:47:05,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:47:05,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 03:47:05,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:47:05,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:05,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:47:05,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:47:05,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:47:05,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:47:05,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:47:05,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:47:05,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:47:05,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:47:05,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:47:05,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 03:47:05,923 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-29 03:47:05,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [465658435] [2020-10-29 03:47:05,924 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:47:05,924 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 03:47:05,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131773891] [2020-10-29 03:47:05,925 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 03:47:05,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:47:05,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 03:47:05,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:47:05,927 INFO L87 Difference]: Start difference. First operand 123 states and 145 transitions. Second operand 12 states. [2020-10-29 03:47:06,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:47:06,405 INFO L93 Difference]: Finished difference Result 141 states and 164 transitions. [2020-10-29 03:47:06,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 03:47:06,405 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 48 [2020-10-29 03:47:06,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:47:06,407 INFO L225 Difference]: With dead ends: 141 [2020-10-29 03:47:06,407 INFO L226 Difference]: Without dead ends: 137 [2020-10-29 03:47:06,407 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:47:06,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-10-29 03:47:06,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 116. [2020-10-29 03:47:06,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-29 03:47:06,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 136 transitions. [2020-10-29 03:47:06,434 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 136 transitions. Word has length 48 [2020-10-29 03:47:06,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:47:06,434 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 136 transitions. [2020-10-29 03:47:06,434 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 03:47:06,434 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 136 transitions. [2020-10-29 03:47:06,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-29 03:47:06,435 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:47:06,435 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:47:06,436 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 03:47:06,436 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:47:06,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:47:06,436 INFO L82 PathProgramCache]: Analyzing trace with hash -1810783797, now seen corresponding path program 5 times [2020-10-29 03:47:06,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:47:06,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [466398171] [2020-10-29 03:47:06,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:47:06,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:47:06,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:06,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:06,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:06,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:07,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:07,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:07,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:11,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:47:11,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-29 03:47:11,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 03:47:11,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 03:47:11,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:47:11,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:47:11,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 03:47:11,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:47:11,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-29 03:47:11,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:47:11,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:47:11,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:47:11,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:11,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:47:11,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:47:11,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:47:11,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:47:11,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:47:11,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:47:11,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:47:11,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:47:11,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:47:11,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:47:11,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-29 03:47:11,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:47:11,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:11,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:47:11,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:47:11,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:47:11,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:47:11,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:47:11,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:47:11,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:47:11,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:47:11,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:47:11,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:47:11,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-29 03:47:11,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:47:11,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:11,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:47:11,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:47:11,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:47:11,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:47:11,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:47:11,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:47:11,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:47:11,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:47:11,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:47:11,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:47:11,751 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 5 proven. 29 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-29 03:47:11,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [466398171] [2020-10-29 03:47:11,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:47:11,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 03:47:11,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864127279] [2020-10-29 03:47:11,753 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 03:47:11,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:47:11,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 03:47:11,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:47:11,754 INFO L87 Difference]: Start difference. First operand 116 states and 136 transitions. Second operand 16 states. [2020-10-29 03:47:12,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:47:12,696 INFO L93 Difference]: Finished difference Result 152 states and 176 transitions. [2020-10-29 03:47:12,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 03:47:12,697 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 49 [2020-10-29 03:47:12,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:47:12,699 INFO L225 Difference]: With dead ends: 152 [2020-10-29 03:47:12,699 INFO L226 Difference]: Without dead ends: 148 [2020-10-29 03:47:12,700 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=69, Invalid=393, Unknown=0, NotChecked=0, Total=462 [2020-10-29 03:47:12,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-10-29 03:47:12,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 121. [2020-10-29 03:47:12,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-29 03:47:12,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 141 transitions. [2020-10-29 03:47:12,716 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 141 transitions. Word has length 49 [2020-10-29 03:47:12,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:47:12,717 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 141 transitions. [2020-10-29 03:47:12,717 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 03:47:12,717 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 141 transitions. [2020-10-29 03:47:12,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-29 03:47:12,718 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:47:12,718 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:47:12,718 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 03:47:12,718 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:47:12,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:47:12,719 INFO L82 PathProgramCache]: Analyzing trace with hash -1010712955, now seen corresponding path program 1 times [2020-10-29 03:47:12,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:47:12,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1093362113] [2020-10-29 03:47:12,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:47:12,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:47:12,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:12,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:12,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:12,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:13,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:13,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:13,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:13,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:13,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:14,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:14,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:14,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:15,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:15,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:16,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:17,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:47:17,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-29 03:47:17,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-29 03:47:17,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-29 03:47:17,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:47:17,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:47:17,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 03:47:17,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:47:17,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-29 03:47:17,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:47:17,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:47:17,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:47:17,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:17,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:47:17,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:47:17,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:47:17,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:47:17,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:47:17,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:47:17,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:47:17,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:47:17,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:47:17,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:47:17,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-29 03:47:17,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:47:17,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:17,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:47:17,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:47:17,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:47:17,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:47:17,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:47:17,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:47:17,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:47:17,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:47:17,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:47:17,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:47:17,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 03:47:17,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:47:17,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:17,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:47:17,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:47:17,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:47:17,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:47:17,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:47:17,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:47:17,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:47:17,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:47:17,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:47:17,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:47:17,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 03:47:17,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:47:17,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:17,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:47:17,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:47:17,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:47:17,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:47:17,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:47:17,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:47:17,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:47:17,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:47:17,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:47:17,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:47:17,922 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-29 03:47:17,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1093362113] [2020-10-29 03:47:17,922 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:47:17,922 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 03:47:17,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686937675] [2020-10-29 03:47:17,923 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 03:47:17,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:47:17,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 03:47:17,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:47:17,924 INFO L87 Difference]: Start difference. First operand 121 states and 141 transitions. Second operand 13 states. [2020-10-29 03:47:18,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:47:18,515 INFO L93 Difference]: Finished difference Result 167 states and 198 transitions. [2020-10-29 03:47:18,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 03:47:18,519 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 53 [2020-10-29 03:47:18,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:47:18,520 INFO L225 Difference]: With dead ends: 167 [2020-10-29 03:47:18,520 INFO L226 Difference]: Without dead ends: 163 [2020-10-29 03:47:18,523 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:47:18,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-10-29 03:47:18,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 149. [2020-10-29 03:47:18,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-29 03:47:18,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 176 transitions. [2020-10-29 03:47:18,555 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 176 transitions. Word has length 53 [2020-10-29 03:47:18,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:47:18,556 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 176 transitions. [2020-10-29 03:47:18,556 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 03:47:18,556 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 176 transitions. [2020-10-29 03:47:18,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-29 03:47:18,557 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:47:18,557 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:47:18,557 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-29 03:47:18,558 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:47:18,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:47:18,558 INFO L82 PathProgramCache]: Analyzing trace with hash 922520990, now seen corresponding path program 3 times [2020-10-29 03:47:18,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:47:18,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [320203780] [2020-10-29 03:47:18,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:47:18,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:47:18,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:18,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:18,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:19,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:19,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:19,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:20,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:21,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:23,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:23,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:23,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:47:23,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 03:47:23,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 03:47:23,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 03:47:23,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:47:23,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:47:23,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:47:23,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:47:23,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 03:47:23,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:47:23,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:47:23,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:47:23,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:23,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:47:23,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:47:23,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:47:23,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:47:23,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:47:23,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:47:23,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:47:23,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:47:23,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:47:23,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:47:23,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-29 03:47:23,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:47:23,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:23,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:47:23,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:47:23,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:47:23,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:47:23,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:47:23,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:47:23,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:47:23,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:47:23,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:47:23,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:47:23,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 03:47:23,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:47:23,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:23,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:47:23,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:47:23,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:47:23,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:47:23,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:47:23,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:47:23,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:47:23,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:47:23,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:47:23,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:47:23,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 03:47:23,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:47:23,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:23,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:47:23,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:47:23,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:47:23,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:47:23,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:47:23,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:47:23,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:47:23,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:47:23,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:47:23,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:47:23,867 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-10-29 03:47:23,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [320203780] [2020-10-29 03:47:23,868 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:47:23,868 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 03:47:23,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420948995] [2020-10-29 03:47:23,869 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 03:47:23,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:47:23,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 03:47:23,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:47:23,870 INFO L87 Difference]: Start difference. First operand 149 states and 176 transitions. Second operand 12 states. [2020-10-29 03:47:24,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:47:24,407 INFO L93 Difference]: Finished difference Result 230 states and 277 transitions. [2020-10-29 03:47:24,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 03:47:24,408 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 56 [2020-10-29 03:47:24,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:47:24,411 INFO L225 Difference]: With dead ends: 230 [2020-10-29 03:47:24,411 INFO L226 Difference]: Without dead ends: 226 [2020-10-29 03:47:24,411 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:47:24,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-10-29 03:47:24,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 185. [2020-10-29 03:47:24,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-10-29 03:47:24,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 225 transitions. [2020-10-29 03:47:24,448 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 225 transitions. Word has length 56 [2020-10-29 03:47:24,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:47:24,449 INFO L481 AbstractCegarLoop]: Abstraction has 185 states and 225 transitions. [2020-10-29 03:47:24,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 03:47:24,449 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 225 transitions. [2020-10-29 03:47:24,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-29 03:47:24,451 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:47:24,451 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:47:24,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-29 03:47:24,451 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:47:24,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:47:24,452 INFO L82 PathProgramCache]: Analyzing trace with hash -1079050068, now seen corresponding path program 1 times [2020-10-29 03:47:24,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:47:24,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1727722709] [2020-10-29 03:47:24,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:47:24,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:47:24,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:24,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:24,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:24,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:25,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:25,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:28,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:28,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:29,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:47:29,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 03:47:29,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 03:47:29,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 03:47:29,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:47:29,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:47:29,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 03:47:29,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:47:29,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 03:47:29,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:47:29,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:47:29,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:47:29,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:29,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:47:29,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:47:29,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:47:29,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:47:29,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:47:29,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:47:29,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:47:29,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:47:29,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:47:29,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:47:29,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-29 03:47:29,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:47:29,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:29,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:47:29,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:47:29,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:47:29,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:47:29,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:47:29,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:47:29,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:47:29,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:47:29,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:47:29,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:47:29,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 03:47:29,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:47:29,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:29,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:47:29,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:47:29,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:47:29,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:47:29,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:47:29,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:47:29,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:47:29,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:47:29,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:47:29,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:47:29,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-29 03:47:29,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:47:29,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:29,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:47:29,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:47:29,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:47:29,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:47:29,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:47:29,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:47:29,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:47:29,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:47:29,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:47:29,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:47:29,743 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-29 03:47:29,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1727722709] [2020-10-29 03:47:29,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:47:29,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 03:47:29,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370782235] [2020-10-29 03:47:29,744 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 03:47:29,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:47:29,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 03:47:29,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:47:29,745 INFO L87 Difference]: Start difference. First operand 185 states and 225 transitions. Second operand 13 states. [2020-10-29 03:47:30,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:47:30,371 INFO L93 Difference]: Finished difference Result 253 states and 308 transitions. [2020-10-29 03:47:30,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 03:47:30,375 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 56 [2020-10-29 03:47:30,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:47:30,377 INFO L225 Difference]: With dead ends: 253 [2020-10-29 03:47:30,378 INFO L226 Difference]: Without dead ends: 249 [2020-10-29 03:47:30,378 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:47:30,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2020-10-29 03:47:30,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 191. [2020-10-29 03:47:30,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-10-29 03:47:30,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 234 transitions. [2020-10-29 03:47:30,416 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 234 transitions. Word has length 56 [2020-10-29 03:47:30,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:47:30,417 INFO L481 AbstractCegarLoop]: Abstraction has 191 states and 234 transitions. [2020-10-29 03:47:30,417 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 03:47:30,417 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 234 transitions. [2020-10-29 03:47:30,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-29 03:47:30,418 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:47:30,418 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:47:30,418 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-29 03:47:30,419 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:47:30,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:47:30,419 INFO L82 PathProgramCache]: Analyzing trace with hash 2143111061, now seen corresponding path program 6 times [2020-10-29 03:47:30,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:47:30,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [500507201] [2020-10-29 03:47:30,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:47:30,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:47:30,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:30,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:30,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:30,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:31,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:31,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:31,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:35,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:47:35,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 03:47:35,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 03:47:35,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 03:47:35,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:47:35,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:47:35,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 03:47:35,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:47:35,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-29 03:47:35,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:47:35,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:47:35,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:47:35,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:35,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:47:35,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:47:35,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:47:35,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:47:35,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:47:35,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:47:35,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:47:35,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:47:35,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:47:35,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:47:35,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-29 03:47:35,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:47:35,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:35,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:47:35,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:47:35,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:47:35,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:47:35,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:47:35,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:47:35,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:47:35,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:47:35,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:47:35,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:47:35,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-29 03:47:35,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:47:35,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:35,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:47:35,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:47:35,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:47:35,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:47:35,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:47:35,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:47:35,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:47:35,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:47:35,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:47:35,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:47:35,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-29 03:47:35,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:47:35,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:35,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:47:35,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:47:35,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:47:35,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:47:35,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:47:35,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:47:35,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:47:35,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:47:35,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:47:35,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:47:35,725 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 18 proven. 28 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-29 03:47:35,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [500507201] [2020-10-29 03:47:35,726 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:47:35,726 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 03:47:35,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737493934] [2020-10-29 03:47:35,726 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 03:47:35,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:47:35,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 03:47:35,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:47:35,727 INFO L87 Difference]: Start difference. First operand 191 states and 234 transitions. Second operand 16 states. [2020-10-29 03:47:37,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:47:37,100 INFO L93 Difference]: Finished difference Result 313 states and 384 transitions. [2020-10-29 03:47:37,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-29 03:47:37,100 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 57 [2020-10-29 03:47:37,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:47:37,103 INFO L225 Difference]: With dead ends: 313 [2020-10-29 03:47:37,103 INFO L226 Difference]: Without dead ends: 309 [2020-10-29 03:47:37,105 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=245, Invalid=811, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 03:47:37,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2020-10-29 03:47:37,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 219. [2020-10-29 03:47:37,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2020-10-29 03:47:37,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 272 transitions. [2020-10-29 03:47:37,139 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 272 transitions. Word has length 57 [2020-10-29 03:47:37,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:47:37,140 INFO L481 AbstractCegarLoop]: Abstraction has 219 states and 272 transitions. [2020-10-29 03:47:37,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 03:47:37,140 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 272 transitions. [2020-10-29 03:47:37,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-29 03:47:37,141 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:47:37,141 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:47:37,142 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-29 03:47:37,142 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:47:37,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:47:37,142 INFO L82 PathProgramCache]: Analyzing trace with hash -621071127, now seen corresponding path program 2 times [2020-10-29 03:47:37,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:47:37,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1288952185] [2020-10-29 03:47:37,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:47:37,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:47:37,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:37,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:37,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:37,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:37,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:38,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:39,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:40,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:42,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:47:42,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 03:47:42,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 03:47:42,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 03:47:42,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:47:42,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:47:42,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:47:42,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:47:42,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-29 03:47:42,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:47:42,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:47:42,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:47:42,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:42,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:47:42,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:47:42,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:47:42,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:47:42,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:47:42,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:47:42,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:47:42,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:47:42,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:47:42,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:47:42,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-29 03:47:42,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:47:42,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:42,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:47:42,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:47:42,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:47:42,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:47:42,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:47:42,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:47:42,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:47:42,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:47:42,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:47:42,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:47:42,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-29 03:47:42,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:47:42,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:42,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:47:42,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:47:42,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:47:42,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:47:42,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:47:42,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:47:42,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:47:42,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:47:42,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:47:42,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:47:42,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-29 03:47:42,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:47:42,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:42,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:47:42,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:47:42,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:47:42,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:47:42,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:47:42,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:47:42,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:47:42,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:47:42,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:47:42,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:47:42,391 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 9 proven. 19 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-29 03:47:42,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1288952185] [2020-10-29 03:47:42,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:47:42,392 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 03:47:42,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571625449] [2020-10-29 03:47:42,392 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 03:47:42,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:47:42,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 03:47:42,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:47:42,393 INFO L87 Difference]: Start difference. First operand 219 states and 272 transitions. Second operand 14 states. [2020-10-29 03:47:43,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:47:43,013 INFO L93 Difference]: Finished difference Result 290 states and 359 transitions. [2020-10-29 03:47:43,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 03:47:43,014 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 59 [2020-10-29 03:47:43,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:47:43,016 INFO L225 Difference]: With dead ends: 290 [2020-10-29 03:47:43,017 INFO L226 Difference]: Without dead ends: 286 [2020-10-29 03:47:43,017 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:47:43,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2020-10-29 03:47:43,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 214. [2020-10-29 03:47:43,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-10-29 03:47:43,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 265 transitions. [2020-10-29 03:47:43,051 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 265 transitions. Word has length 59 [2020-10-29 03:47:43,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:47:43,052 INFO L481 AbstractCegarLoop]: Abstraction has 214 states and 265 transitions. [2020-10-29 03:47:43,052 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 03:47:43,052 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 265 transitions. [2020-10-29 03:47:43,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-29 03:47:43,053 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:47:43,053 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:47:43,054 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-29 03:47:43,054 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:47:43,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:47:43,054 INFO L82 PathProgramCache]: Analyzing trace with hash -88801385, now seen corresponding path program 5 times [2020-10-29 03:47:43,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:47:43,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [123549545] [2020-10-29 03:47:43,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:47:43,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:47:43,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:43,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:43,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:43,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:43,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:43,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:44,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:46,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:47,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:48,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:48,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:47:48,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 03:47:48,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 03:47:48,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 03:47:48,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:47:48,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:47:48,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 03:47:48,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:47:48,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-29 03:47:48,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:47:48,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:47:48,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:47:48,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:48,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:47:48,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:47:48,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:47:48,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:47:48,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:47:48,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:47:48,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:47:48,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:47:48,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:47:48,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:47:48,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-29 03:47:48,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:47:48,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:48,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:47:48,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:47:48,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:47:48,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:47:48,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:47:48,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:47:48,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:47:48,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:47:48,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:47:48,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:47:48,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-29 03:47:48,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:47:48,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:48,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:47:48,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:47:48,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:47:48,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:47:48,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:47:48,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:47:48,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:47:48,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:47:48,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:47:48,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:47:48,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-29 03:47:48,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:47:48,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:48,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:47:48,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:47:48,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:47:48,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:47:48,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:47:48,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:47:48,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:47:48,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:47:48,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:47:48,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:47:48,300 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 6 proven. 22 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-10-29 03:47:48,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [123549545] [2020-10-29 03:47:48,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:47:48,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 03:47:48,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061205547] [2020-10-29 03:47:48,301 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 03:47:48,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:47:48,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 03:47:48,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:47:48,302 INFO L87 Difference]: Start difference. First operand 214 states and 265 transitions. Second operand 13 states. [2020-10-29 03:47:48,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:47:48,807 INFO L93 Difference]: Finished difference Result 333 states and 419 transitions. [2020-10-29 03:47:48,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 03:47:48,808 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 59 [2020-10-29 03:47:48,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:47:48,812 INFO L225 Difference]: With dead ends: 333 [2020-10-29 03:47:48,812 INFO L226 Difference]: Without dead ends: 329 [2020-10-29 03:47:48,813 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:47:48,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2020-10-29 03:47:48,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 231. [2020-10-29 03:47:48,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2020-10-29 03:47:48,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 290 transitions. [2020-10-29 03:47:48,851 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 290 transitions. Word has length 59 [2020-10-29 03:47:48,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:47:48,852 INFO L481 AbstractCegarLoop]: Abstraction has 231 states and 290 transitions. [2020-10-29 03:47:48,852 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 03:47:48,852 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 290 transitions. [2020-10-29 03:47:48,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-29 03:47:48,853 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:47:48,854 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:47:48,854 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-29 03:47:48,854 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:47:48,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:47:48,854 INFO L82 PathProgramCache]: Analyzing trace with hash -2090372443, now seen corresponding path program 3 times [2020-10-29 03:47:48,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:47:48,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1527040942] [2020-10-29 03:47:48,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:47:48,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:47:48,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:48,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:49,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:49,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:49,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:49,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:49,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:49,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:50,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:50,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:50,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:50,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:50,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:50,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:53,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:47:53,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 03:47:53,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-29 03:47:53,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-29 03:47:53,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:47:53,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:47:53,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:47:53,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:47:53,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-29 03:47:53,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:47:54,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:47:54,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:47:54,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:54,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:47:54,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:47:54,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:47:54,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:47:54,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:47:54,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:47:54,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:47:54,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:47:54,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:47:54,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:47:54,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-29 03:47:54,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:47:54,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:54,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:47:54,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:47:54,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:47:54,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:47:54,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:47:54,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:47:54,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:47:54,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:47:54,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:47:54,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:47:54,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-29 03:47:54,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:47:54,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:54,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:47:54,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:47:54,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:47:54,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:47:54,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:47:54,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:47:54,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:47:54,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:47:54,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:47:54,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:47:54,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-29 03:47:54,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:47:54,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:54,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:47:54,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:47:54,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:47:54,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:47:54,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:47:54,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:47:54,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:47:54,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:47:54,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:47:54,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:47:54,112 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 8 proven. 20 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-29 03:47:54,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1527040942] [2020-10-29 03:47:54,112 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:47:54,112 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 03:47:54,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598152126] [2020-10-29 03:47:54,113 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 03:47:54,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:47:54,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 03:47:54,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:47:54,114 INFO L87 Difference]: Start difference. First operand 231 states and 290 transitions. Second operand 14 states. [2020-10-29 03:47:54,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:47:54,770 INFO L93 Difference]: Finished difference Result 273 states and 338 transitions. [2020-10-29 03:47:54,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 03:47:54,771 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 59 [2020-10-29 03:47:54,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:47:54,773 INFO L225 Difference]: With dead ends: 273 [2020-10-29 03:47:54,773 INFO L226 Difference]: Without dead ends: 269 [2020-10-29 03:47:54,774 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:47:54,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2020-10-29 03:47:54,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 202. [2020-10-29 03:47:54,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-10-29 03:47:54,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 249 transitions. [2020-10-29 03:47:54,804 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 249 transitions. Word has length 59 [2020-10-29 03:47:54,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:47:54,805 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 249 transitions. [2020-10-29 03:47:54,805 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 03:47:54,805 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 249 transitions. [2020-10-29 03:47:54,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-29 03:47:54,806 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:47:54,806 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:47:54,806 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-29 03:47:54,806 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:47:54,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:47:54,807 INFO L82 PathProgramCache]: Analyzing trace with hash 839127003, now seen corresponding path program 2 times [2020-10-29 03:47:54,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:47:54,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1672412624] [2020-10-29 03:47:54,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:47:54,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:47:54,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:54,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:54,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:54,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:54,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:56,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:59,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:47:59,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 03:47:59,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:47:59,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 03:47:59,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:47:59,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:47:59,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 03:47:59,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:47:59,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 03:47:59,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:47:59,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:47:59,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:47:59,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:59,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:47:59,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:47:59,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:47:59,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:47:59,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:47:59,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:47:59,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:47:59,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:47:59,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:47:59,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:47:59,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-29 03:47:59,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:47:59,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:59,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:47:59,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:47:59,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:47:59,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:47:59,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:47:59,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:47:59,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:47:59,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:47:59,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:47:59,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:47:59,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 03:47:59,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:47:59,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:59,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:47:59,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:47:59,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:47:59,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:47:59,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:47:59,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:47:59,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:47:59,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:47:59,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:47:59,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:47:59,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 03:47:59,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:47:59,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:59,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:47:59,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:47:59,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:47:59,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:47:59,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:47:59,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:47:59,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:47:59,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:47:59,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:47:59,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:47:59,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-29 03:47:59,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:47:59,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:59,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:47:59,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:47:59,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:47:59,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:47:59,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:47:59,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:47:59,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:47:59,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:47:59,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:47:59,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:47:59,933 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-10-29 03:47:59,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1672412624] [2020-10-29 03:47:59,933 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:47:59,934 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 03:47:59,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561237081] [2020-10-29 03:47:59,934 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 03:47:59,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:47:59,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 03:47:59,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-29 03:47:59,935 INFO L87 Difference]: Start difference. First operand 202 states and 249 transitions. Second operand 9 states. [2020-10-29 03:48:00,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:48:00,187 INFO L93 Difference]: Finished difference Result 242 states and 291 transitions. [2020-10-29 03:48:00,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 03:48:00,187 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2020-10-29 03:48:00,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:48:00,189 INFO L225 Difference]: With dead ends: 242 [2020-10-29 03:48:00,189 INFO L226 Difference]: Without dead ends: 172 [2020-10-29 03:48:00,189 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:48:00,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-10-29 03:48:00,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 166. [2020-10-29 03:48:00,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-10-29 03:48:00,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 206 transitions. [2020-10-29 03:48:00,213 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 206 transitions. Word has length 61 [2020-10-29 03:48:00,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:48:00,213 INFO L481 AbstractCegarLoop]: Abstraction has 166 states and 206 transitions. [2020-10-29 03:48:00,214 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 03:48:00,214 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 206 transitions. [2020-10-29 03:48:00,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-29 03:48:00,215 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:48:00,215 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:48:00,215 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-29 03:48:00,215 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:48:00,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:48:00,216 INFO L82 PathProgramCache]: Analyzing trace with hash 1209976890, now seen corresponding path program 7 times [2020-10-29 03:48:00,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:48:00,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1422036518] [2020-10-29 03:48:00,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:48:00,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:48:00,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:00,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:00,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:00,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:00,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:00,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:03,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:05,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:48:05,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 03:48:05,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 03:48:05,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 03:48:05,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:48:05,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:48:05,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 03:48:05,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:48:05,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 03:48:05,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:48:05,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:48:05,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:48:05,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:05,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:48:05,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:48:05,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:48:05,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:48:05,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:48:05,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:48:05,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:48:05,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:48:05,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:48:05,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:48:05,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 03:48:05,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:48:05,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:05,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:48:05,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:48:05,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:48:05,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:48:05,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:48:05,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:48:05,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:48:05,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:48:05,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:48:05,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:48:05,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 03:48:05,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:48:05,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:05,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:48:05,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:48:05,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:48:05,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:48:05,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:48:05,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:48:05,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:48:05,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:48:05,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:48:05,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:48:05,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-29 03:48:05,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:48:05,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:05,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:48:05,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:48:05,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:48:05,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:48:05,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:48:05,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:48:05,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:48:05,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:48:05,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:48:05,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:48:05,577 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 7 proven. 52 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-29 03:48:05,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1422036518] [2020-10-29 03:48:05,578 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:48:05,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 03:48:05,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935020348] [2020-10-29 03:48:05,578 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 03:48:05,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:48:05,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 03:48:05,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2020-10-29 03:48:05,579 INFO L87 Difference]: Start difference. First operand 166 states and 206 transitions. Second operand 18 states. [2020-10-29 03:48:06,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:48:06,882 INFO L93 Difference]: Finished difference Result 240 states and 296 transitions. [2020-10-29 03:48:06,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 03:48:06,882 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 60 [2020-10-29 03:48:06,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:48:06,884 INFO L225 Difference]: With dead ends: 240 [2020-10-29 03:48:06,884 INFO L226 Difference]: Without dead ends: 236 [2020-10-29 03:48:06,885 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=84, Invalid=566, Unknown=0, NotChecked=0, Total=650 [2020-10-29 03:48:06,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2020-10-29 03:48:06,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 178. [2020-10-29 03:48:06,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-10-29 03:48:06,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 221 transitions. [2020-10-29 03:48:06,911 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 221 transitions. Word has length 60 [2020-10-29 03:48:06,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:48:06,911 INFO L481 AbstractCegarLoop]: Abstraction has 178 states and 221 transitions. [2020-10-29 03:48:06,911 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 03:48:06,912 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 221 transitions. [2020-10-29 03:48:06,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-29 03:48:06,913 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:48:06,913 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:48:06,913 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-29 03:48:06,913 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:48:06,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:48:06,914 INFO L82 PathProgramCache]: Analyzing trace with hash 801906430, now seen corresponding path program 6 times [2020-10-29 03:48:06,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:48:06,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [139597728] [2020-10-29 03:48:06,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:48:06,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:48:06,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:06,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:07,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:07,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:07,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:07,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:08,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:08,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:09,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:11,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:48:11,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 03:48:11,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 03:48:11,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 03:48:11,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:48:11,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:48:11,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:48:11,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:48:11,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 03:48:11,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:48:12,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:48:12,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:48:12,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:12,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:48:12,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:48:12,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:48:12,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:48:12,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:48:12,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:48:12,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:48:12,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:48:12,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:48:12,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:48:12,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 03:48:12,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:48:12,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:12,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:48:12,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:48:12,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:48:12,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:48:12,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:48:12,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:48:12,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:48:12,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:48:12,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:48:12,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:48:12,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 03:48:12,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:48:12,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:12,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:48:12,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:48:12,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:48:12,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:48:12,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:48:12,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:48:12,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:48:12,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:48:12,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:48:12,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:48:12,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-29 03:48:12,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:48:12,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:12,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:48:12,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:48:12,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:48:12,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:48:12,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:48:12,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:48:12,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:48:12,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:48:12,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:48:12,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:48:12,150 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 8 proven. 33 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-10-29 03:48:12,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [139597728] [2020-10-29 03:48:12,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:48:12,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 03:48:12,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593711316] [2020-10-29 03:48:12,151 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 03:48:12,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:48:12,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 03:48:12,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:48:12,152 INFO L87 Difference]: Start difference. First operand 178 states and 221 transitions. Second operand 14 states. [2020-10-29 03:48:12,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:48:12,738 INFO L93 Difference]: Finished difference Result 196 states and 240 transitions. [2020-10-29 03:48:12,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 03:48:12,738 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 62 [2020-10-29 03:48:12,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:48:12,741 INFO L225 Difference]: With dead ends: 196 [2020-10-29 03:48:12,741 INFO L226 Difference]: Without dead ends: 192 [2020-10-29 03:48:12,742 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:48:12,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-10-29 03:48:12,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 113. [2020-10-29 03:48:12,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-29 03:48:12,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 132 transitions. [2020-10-29 03:48:12,761 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 132 transitions. Word has length 62 [2020-10-29 03:48:12,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:48:12,761 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 132 transitions. [2020-10-29 03:48:12,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 03:48:12,762 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 132 transitions. [2020-10-29 03:48:12,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-29 03:48:12,762 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:48:12,763 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:48:12,763 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-29 03:48:12,763 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:48:12,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:48:12,763 INFO L82 PathProgramCache]: Analyzing trace with hash -1683048972, now seen corresponding path program 3 times [2020-10-29 03:48:12,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:48:12,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2142643837] [2020-10-29 03:48:12,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:48:12,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:48:12,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:12,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:13,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:13,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:13,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:13,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:13,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:13,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:13,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:13,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:15,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:15,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:16,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:17,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:48:17,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 03:48:17,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 03:48:17,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 03:48:17,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:48:17,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:48:17,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:48:17,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:48:17,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-29 03:48:17,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:48:17,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:48:18,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:48:18,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:18,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:48:18,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:48:18,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:48:18,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:48:18,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:48:18,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:48:18,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:48:18,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:48:18,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:48:18,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:48:18,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-29 03:48:18,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:48:18,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:18,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:48:18,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:48:18,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:48:18,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:48:18,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:48:18,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:48:18,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:48:18,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:48:18,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:48:18,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:48:18,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 03:48:18,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:48:18,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:18,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:48:18,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:48:18,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:48:18,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:48:18,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:48:18,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:48:18,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:48:18,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:48:18,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:48:18,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:48:18,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 03:48:18,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:48:18,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:18,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:48:18,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:48:18,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:48:18,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:48:18,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:48:18,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:48:18,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:48:18,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:48:18,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:48:18,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:48:18,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-29 03:48:18,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:48:18,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:18,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:48:18,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:48:18,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:48:18,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:48:18,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:48:18,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:48:18,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:48:18,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:48:18,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:48:18,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:48:18,042 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 8 proven. 14 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2020-10-29 03:48:18,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2142643837] [2020-10-29 03:48:18,043 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:48:18,043 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 03:48:18,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324341061] [2020-10-29 03:48:18,043 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 03:48:18,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:48:18,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 03:48:18,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:48:18,044 INFO L87 Difference]: Start difference. First operand 113 states and 132 transitions. Second operand 14 states. [2020-10-29 03:48:18,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:48:18,638 INFO L93 Difference]: Finished difference Result 161 states and 191 transitions. [2020-10-29 03:48:18,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 03:48:18,639 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 64 [2020-10-29 03:48:18,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:48:18,640 INFO L225 Difference]: With dead ends: 161 [2020-10-29 03:48:18,640 INFO L226 Difference]: Without dead ends: 157 [2020-10-29 03:48:18,641 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:48:18,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-10-29 03:48:18,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 149. [2020-10-29 03:48:18,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-29 03:48:18,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 178 transitions. [2020-10-29 03:48:18,665 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 178 transitions. Word has length 64 [2020-10-29 03:48:18,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:48:18,666 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 178 transitions. [2020-10-29 03:48:18,666 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 03:48:18,666 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 178 transitions. [2020-10-29 03:48:18,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-29 03:48:18,667 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:48:18,667 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:48:18,667 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-29 03:48:18,667 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:48:18,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:48:18,668 INFO L82 PathProgramCache]: Analyzing trace with hash 1589584303, now seen corresponding path program 4 times [2020-10-29 03:48:18,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:48:18,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1732253041] [2020-10-29 03:48:18,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:48:18,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:48:18,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:18,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:18,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:22,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:22,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:22,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:22,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:23,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:23,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:23,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:48:23,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-29 03:48:23,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 03:48:23,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 03:48:23,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:48:23,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:48:23,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:48:23,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:48:23,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-29 03:48:23,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:48:23,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:48:23,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:48:23,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:23,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:48:23,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:48:23,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:48:23,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:48:23,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:48:23,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:48:23,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:48:23,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:48:23,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:48:23,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:48:23,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-29 03:48:23,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:48:23,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:23,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:48:23,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:48:23,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:48:23,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:48:23,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:48:23,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:48:23,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:48:23,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:48:23,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:48:23,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:48:23,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-29 03:48:23,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:48:23,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:23,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:48:23,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:48:23,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:48:23,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:48:23,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:48:23,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:48:23,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:48:23,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:48:23,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:48:23,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:48:23,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-29 03:48:23,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:48:23,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:23,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:48:23,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:48:23,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:48:23,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:48:23,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:48:23,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:48:23,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:48:23,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:48:23,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:48:23,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:48:23,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-29 03:48:23,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:48:23,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:23,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:48:23,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:48:23,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:48:23,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:48:23,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:48:23,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:48:23,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:48:23,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:48:23,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:48:23,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:48:23,852 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 23 proven. 22 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-29 03:48:23,852 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1732253041] [2020-10-29 03:48:23,852 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:48:23,853 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 03:48:23,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763275290] [2020-10-29 03:48:23,853 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 03:48:23,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:48:23,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 03:48:23,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:48:23,854 INFO L87 Difference]: Start difference. First operand 149 states and 178 transitions. Second operand 12 states. [2020-10-29 03:48:24,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:48:24,402 INFO L93 Difference]: Finished difference Result 200 states and 237 transitions. [2020-10-29 03:48:24,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 03:48:24,403 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 67 [2020-10-29 03:48:24,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:48:24,405 INFO L225 Difference]: With dead ends: 200 [2020-10-29 03:48:24,405 INFO L226 Difference]: Without dead ends: 181 [2020-10-29 03:48:24,406 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=100, Invalid=206, Unknown=0, NotChecked=0, Total=306 [2020-10-29 03:48:24,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-10-29 03:48:24,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 149. [2020-10-29 03:48:24,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-29 03:48:24,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 177 transitions. [2020-10-29 03:48:24,436 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 177 transitions. Word has length 67 [2020-10-29 03:48:24,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:48:24,436 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 177 transitions. [2020-10-29 03:48:24,436 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 03:48:24,436 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 177 transitions. [2020-10-29 03:48:24,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-29 03:48:24,438 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:48:24,438 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:48:24,438 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-29 03:48:24,438 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:48:24,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:48:24,439 INFO L82 PathProgramCache]: Analyzing trace with hash -439001807, now seen corresponding path program 4 times [2020-10-29 03:48:24,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:48:24,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1753656890] [2020-10-29 03:48:24,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:48:24,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:48:24,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:24,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:25,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:25,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:25,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:25,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:25,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:26,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:26,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:27,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:27,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:27,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:27,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:27,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:28,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:29,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:48:29,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-29 03:48:29,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-29 03:48:29,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 03:48:29,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:48:29,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:48:29,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 03:48:29,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:48:29,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-29 03:48:29,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:48:29,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:48:29,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:48:29,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:29,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:48:29,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:48:29,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:48:29,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:48:29,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:48:29,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:48:29,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:48:29,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:48:29,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:48:29,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:48:29,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-29 03:48:29,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:48:29,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:29,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:48:29,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:48:29,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:48:29,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:48:29,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:48:29,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:48:29,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:48:29,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:48:29,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:48:29,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:48:29,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-29 03:48:29,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:48:29,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:29,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:48:29,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:48:29,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:48:29,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:48:29,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:48:29,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:48:29,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:48:29,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:48:29,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:48:29,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:48:29,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-29 03:48:29,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:48:29,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:29,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:48:29,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:48:29,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:48:29,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:48:29,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:48:29,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:48:29,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:48:29,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:48:29,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:48:29,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:48:29,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-29 03:48:29,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:48:29,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:29,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:48:29,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:48:29,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:48:29,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:48:29,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:48:29,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:48:29,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:48:29,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:48:29,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:48:29,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:48:29,718 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 10 proven. 22 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2020-10-29 03:48:29,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1753656890] [2020-10-29 03:48:29,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:48:29,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 03:48:29,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577173045] [2020-10-29 03:48:29,719 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 03:48:29,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:48:29,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 03:48:29,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2020-10-29 03:48:29,720 INFO L87 Difference]: Start difference. First operand 149 states and 177 transitions. Second operand 15 states. [2020-10-29 03:48:30,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:48:30,444 INFO L93 Difference]: Finished difference Result 195 states and 233 transitions. [2020-10-29 03:48:30,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 03:48:30,445 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 67 [2020-10-29 03:48:30,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:48:30,447 INFO L225 Difference]: With dead ends: 195 [2020-10-29 03:48:30,447 INFO L226 Difference]: Without dead ends: 191 [2020-10-29 03:48:30,447 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2020-10-29 03:48:30,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-29 03:48:30,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 149. [2020-10-29 03:48:30,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-29 03:48:30,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 177 transitions. [2020-10-29 03:48:30,481 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 177 transitions. Word has length 67 [2020-10-29 03:48:30,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:48:30,481 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 177 transitions. [2020-10-29 03:48:30,481 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 03:48:30,481 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 177 transitions. [2020-10-29 03:48:30,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-29 03:48:30,482 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:48:30,482 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:48:30,483 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-29 03:48:30,483 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:48:30,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:48:30,483 INFO L82 PathProgramCache]: Analyzing trace with hash -1829363987, now seen corresponding path program 5 times [2020-10-29 03:48:30,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:48:30,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [317860600] [2020-10-29 03:48:30,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:48:30,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:48:30,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:30,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:30,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:30,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:31,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:31,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:31,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:31,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:31,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:32,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:33,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:34,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:34,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:35,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:48:35,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-29 03:48:35,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 03:48:35,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 03:48:35,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:48:35,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:48:35,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 03:48:35,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:48:35,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-29 03:48:35,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:48:35,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:48:35,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:48:35,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:35,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:48:35,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:48:35,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:48:35,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:48:35,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:48:35,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:48:35,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:48:35,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:48:35,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:48:35,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:48:35,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-29 03:48:35,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:48:35,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:35,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:48:35,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:48:35,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:48:35,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:48:35,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:48:35,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:48:35,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:48:35,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:48:35,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:48:35,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:48:35,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-29 03:48:35,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:48:35,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:35,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:48:35,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:48:35,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:48:35,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:48:35,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:48:35,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:48:35,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:48:35,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:48:35,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:48:35,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:48:35,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-29 03:48:35,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:48:35,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:35,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:48:35,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:48:35,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:48:35,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:48:35,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:48:35,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:48:35,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:48:35,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:48:35,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:48:35,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:48:35,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-29 03:48:35,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:48:35,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:35,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:48:35,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:48:35,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:48:35,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:48:35,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:48:35,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:48:35,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:48:35,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:48:35,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:48:35,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:48:35,761 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2020-10-29 03:48:35,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [317860600] [2020-10-29 03:48:35,762 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:48:35,762 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 03:48:35,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385261364] [2020-10-29 03:48:35,762 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 03:48:35,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:48:35,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 03:48:35,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2020-10-29 03:48:35,763 INFO L87 Difference]: Start difference. First operand 149 states and 177 transitions. Second operand 15 states. [2020-10-29 03:48:36,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:48:36,460 INFO L93 Difference]: Finished difference Result 179 states and 211 transitions. [2020-10-29 03:48:36,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 03:48:36,461 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 67 [2020-10-29 03:48:36,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:48:36,463 INFO L225 Difference]: With dead ends: 179 [2020-10-29 03:48:36,463 INFO L226 Difference]: Without dead ends: 175 [2020-10-29 03:48:36,464 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=360, Unknown=0, NotChecked=0, Total=420 [2020-10-29 03:48:36,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-10-29 03:48:36,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 131. [2020-10-29 03:48:36,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-29 03:48:36,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 152 transitions. [2020-10-29 03:48:36,481 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 152 transitions. Word has length 67 [2020-10-29 03:48:36,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:48:36,482 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 152 transitions. [2020-10-29 03:48:36,482 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 03:48:36,482 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 152 transitions. [2020-10-29 03:48:36,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-29 03:48:36,483 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:48:36,483 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:48:36,483 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-29 03:48:36,483 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:48:36,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:48:36,484 INFO L82 PathProgramCache]: Analyzing trace with hash 1223724804, now seen corresponding path program 8 times [2020-10-29 03:48:36,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:48:36,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [147781525] [2020-10-29 03:48:36,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:48:36,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:48:36,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:36,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:37,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:37,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:37,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:37,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:41,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:48:41,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 03:48:41,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:48:41,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 03:48:41,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:48:41,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:48:41,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 03:48:41,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:48:41,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 03:48:41,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:48:41,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:48:41,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:48:41,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:41,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:48:41,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:48:41,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:48:41,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:48:41,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:48:41,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:48:41,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:48:41,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:48:41,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:48:41,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:48:41,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 03:48:41,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:48:41,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:41,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:48:41,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:48:41,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:48:41,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:48:41,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:48:41,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:48:41,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:48:41,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:48:41,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:48:41,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:48:41,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 03:48:41,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:48:41,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:41,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:48:41,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:48:41,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:48:41,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:48:41,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:48:41,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:48:41,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:48:41,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:48:41,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:48:41,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:48:41,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-29 03:48:41,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:48:41,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:41,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:48:41,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:48:41,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:48:41,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:48:41,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:48:41,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:48:41,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:48:41,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:48:41,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:48:41,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:48:41,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 03:48:41,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:48:41,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:41,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:48:41,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:48:41,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:48:41,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:48:41,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:48:41,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:48:41,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:48:41,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:48:41,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:48:41,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:48:41,868 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 20 proven. 55 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-29 03:48:41,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [147781525] [2020-10-29 03:48:41,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:48:41,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 03:48:41,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014573339] [2020-10-29 03:48:41,869 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 03:48:41,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:48:41,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 03:48:41,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2020-10-29 03:48:41,870 INFO L87 Difference]: Start difference. First operand 131 states and 152 transitions. Second operand 18 states. [2020-10-29 03:48:43,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:48:43,629 INFO L93 Difference]: Finished difference Result 226 states and 267 transitions. [2020-10-29 03:48:43,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-29 03:48:43,630 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 68 [2020-10-29 03:48:43,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:48:43,632 INFO L225 Difference]: With dead ends: 226 [2020-10-29 03:48:43,632 INFO L226 Difference]: Without dead ends: 222 [2020-10-29 03:48:43,634 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=278, Invalid=1128, Unknown=0, NotChecked=0, Total=1406 [2020-10-29 03:48:43,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-10-29 03:48:43,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 157. [2020-10-29 03:48:43,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-29 03:48:43,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 185 transitions. [2020-10-29 03:48:43,664 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 185 transitions. Word has length 68 [2020-10-29 03:48:43,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:48:43,664 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 185 transitions. [2020-10-29 03:48:43,664 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 03:48:43,664 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 185 transitions. [2020-10-29 03:48:43,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-29 03:48:43,665 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:48:43,665 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:48:43,665 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-29 03:48:43,665 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:48:43,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:48:43,666 INFO L82 PathProgramCache]: Analyzing trace with hash -1363793846, now seen corresponding path program 5 times [2020-10-29 03:48:43,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:48:43,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [335839987] [2020-10-29 03:48:43,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:48:43,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:48:43,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:43,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:43,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:44,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:44,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:44,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:45,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:45,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:46,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:46,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:46,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:46,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:47,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:47,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:48,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:48:48,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-29 03:48:48,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-29 03:48:48,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 03:48:48,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:48:48,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:48:48,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 03:48:48,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:48:48,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 03:48:48,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:48:48,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:48:48,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:48:48,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:48,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:48:48,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:48:48,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:48:48,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:48:48,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:48:48,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:48:48,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:48:48,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:48:48,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:48:48,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:48:48,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-29 03:48:48,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:48:48,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:48,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:48:48,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:48:48,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:48:48,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:48:48,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:48:48,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:48:48,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:48:48,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:48:48,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:48:48,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:48:48,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 03:48:48,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:48:48,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:48,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:48:48,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:48:48,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:48:48,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:48:48,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:48:48,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:48:48,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:48:48,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:48:48,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:48:48,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:48:48,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 03:48:48,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:48:48,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:48,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:48:48,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:48:48,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:48:48,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:48:48,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:48:48,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:48:48,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:48:48,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:48:48,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:48:48,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:48:48,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-29 03:48:48,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:48:48,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:48,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:48:48,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:48:48,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:48:48,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:48:48,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:48:48,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:48:48,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:48:48,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:48:48,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:48:48,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:48:48,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-29 03:48:48,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:48:48,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:48,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:48:48,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:48:48,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:48:49,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:48:49,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:48:49,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:48:49,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:48:49,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:48:49,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:48:49,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:48:49,013 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 14 proven. 16 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2020-10-29 03:48:49,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [335839987] [2020-10-29 03:48:49,014 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:48:49,014 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 03:48:49,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883789522] [2020-10-29 03:48:49,015 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 03:48:49,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:48:49,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 03:48:49,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2020-10-29 03:48:49,015 INFO L87 Difference]: Start difference. First operand 157 states and 185 transitions. Second operand 15 states. [2020-10-29 03:48:49,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:48:49,907 INFO L93 Difference]: Finished difference Result 196 states and 232 transitions. [2020-10-29 03:48:49,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 03:48:49,908 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 72 [2020-10-29 03:48:49,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:48:49,910 INFO L225 Difference]: With dead ends: 196 [2020-10-29 03:48:49,910 INFO L226 Difference]: Without dead ends: 161 [2020-10-29 03:48:49,912 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=106, Invalid=446, Unknown=0, NotChecked=0, Total=552 [2020-10-29 03:48:49,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-10-29 03:48:49,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 159. [2020-10-29 03:48:49,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-29 03:48:49,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 187 transitions. [2020-10-29 03:48:49,952 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 187 transitions. Word has length 72 [2020-10-29 03:48:49,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:48:49,953 INFO L481 AbstractCegarLoop]: Abstraction has 159 states and 187 transitions. [2020-10-29 03:48:49,953 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 03:48:49,953 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 187 transitions. [2020-10-29 03:48:49,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-29 03:48:49,954 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:48:49,954 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:48:49,954 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-29 03:48:49,954 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:48:49,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:48:49,955 INFO L82 PathProgramCache]: Analyzing trace with hash -232872641, now seen corresponding path program 9 times [2020-10-29 03:48:49,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:48:49,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1605290930] [2020-10-29 03:48:49,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:48:49,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:48:49,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:50,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:50,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:50,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:51,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:51,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:52,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:52,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:52,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:54,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:48:54,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-29 03:48:54,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 03:48:54,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 03:48:54,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:48:54,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:48:54,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 03:48:54,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:48:54,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-29 03:48:54,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:48:55,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:48:55,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:48:55,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:55,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:48:55,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:48:55,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:48:55,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:48:55,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:48:55,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:48:55,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:48:55,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:48:55,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:48:55,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:48:55,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-29 03:48:55,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:48:55,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:55,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:48:55,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:48:55,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:48:55,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:48:55,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:48:55,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:48:55,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:48:55,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:48:55,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:48:55,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:48:55,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-29 03:48:55,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:48:55,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:55,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:48:55,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:48:55,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:48:55,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:48:55,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:48:55,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:48:55,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:48:55,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:48:55,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:48:55,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:48:55,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-29 03:48:55,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:48:55,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:55,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:48:55,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:48:55,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:48:55,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:48:55,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:48:55,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:48:55,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:48:55,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:48:55,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:48:55,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:48:55,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-29 03:48:55,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:48:55,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:55,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:48:55,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:48:55,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:48:55,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:48:55,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:48:55,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:48:55,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:48:55,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:48:55,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:48:55,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:48:55,389 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 9 proven. 82 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-29 03:48:55,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1605290930] [2020-10-29 03:48:55,389 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:48:55,390 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-29 03:48:55,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020101628] [2020-10-29 03:48:55,390 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-29 03:48:55,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:48:55,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-29 03:48:55,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:48:55,391 INFO L87 Difference]: Start difference. First operand 159 states and 187 transitions. Second operand 20 states. [2020-10-29 03:48:57,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:48:57,025 INFO L93 Difference]: Finished difference Result 215 states and 252 transitions. [2020-10-29 03:48:57,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 03:48:57,026 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 71 [2020-10-29 03:48:57,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:48:57,028 INFO L225 Difference]: With dead ends: 215 [2020-10-29 03:48:57,028 INFO L226 Difference]: Without dead ends: 211 [2020-10-29 03:48:57,029 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=89, Invalid=667, Unknown=0, NotChecked=0, Total=756 [2020-10-29 03:48:57,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2020-10-29 03:48:57,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 167. [2020-10-29 03:48:57,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-10-29 03:48:57,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 196 transitions. [2020-10-29 03:48:57,060 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 196 transitions. Word has length 71 [2020-10-29 03:48:57,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:48:57,060 INFO L481 AbstractCegarLoop]: Abstraction has 167 states and 196 transitions. [2020-10-29 03:48:57,060 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-29 03:48:57,061 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 196 transitions. [2020-10-29 03:48:57,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-29 03:48:57,062 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:48:57,062 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:48:57,062 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-29 03:48:57,062 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:48:57,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:48:57,062 INFO L82 PathProgramCache]: Analyzing trace with hash -283334407, now seen corresponding path program 6 times [2020-10-29 03:48:57,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:48:57,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [138112] [2020-10-29 03:48:57,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:48:57,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:48:57,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:57,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:57,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:57,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:57,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:58,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:58,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:58,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:58,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:58,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:59,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:59,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:59,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:59,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:59,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:00,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:00,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:00,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:01,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:01,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:02,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:02,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 03:49:02,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-29 03:49:02,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 03:49:02,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:02,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:02,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 03:49:02,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:49:02,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 03:49:02,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:49:02,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:49:02,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:02,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:02,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:02,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:49:02,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:49:02,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:49:02,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:02,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:02,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:49:02,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:49:02,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:49:02,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:49:02,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-29 03:49:02,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:02,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:02,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:02,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:49:02,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:49:02,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:49:02,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:02,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:02,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:49:02,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:49:02,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:49:02,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:49:02,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-29 03:49:02,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:02,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:02,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:02,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:49:02,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:49:02,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:49:02,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:02,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:02,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:49:02,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:49:02,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:49:02,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:49:02,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-29 03:49:02,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:02,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:02,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:02,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:49:02,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:49:02,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:49:02,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:02,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:02,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:49:02,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:49:02,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:49:02,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:49:02,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-29 03:49:02,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:02,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:02,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:02,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:49:02,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:49:02,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:49:02,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:02,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:02,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:49:02,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:49:02,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:49:02,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:49:02,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-29 03:49:02,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:02,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:02,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:02,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:49:02,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:49:02,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:49:02,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:02,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:02,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:49:02,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:49:02,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:49:02,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:49:02,394 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 10 proven. 24 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-29 03:49:02,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [138112] [2020-10-29 03:49:02,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:49:02,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 03:49:02,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392456512] [2020-10-29 03:49:02,395 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 03:49:02,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:49:02,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 03:49:02,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2020-10-29 03:49:02,395 INFO L87 Difference]: Start difference. First operand 167 states and 196 transitions. Second operand 15 states. [2020-10-29 03:49:03,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:49:03,086 INFO L93 Difference]: Finished difference Result 297 states and 363 transitions. [2020-10-29 03:49:03,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 03:49:03,086 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 75 [2020-10-29 03:49:03,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:49:03,088 INFO L225 Difference]: With dead ends: 297 [2020-10-29 03:49:03,088 INFO L226 Difference]: Without dead ends: 293 [2020-10-29 03:49:03,089 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2020-10-29 03:49:03,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-10-29 03:49:03,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 230. [2020-10-29 03:49:03,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-10-29 03:49:03,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 284 transitions. [2020-10-29 03:49:03,129 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 284 transitions. Word has length 75 [2020-10-29 03:49:03,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:49:03,130 INFO L481 AbstractCegarLoop]: Abstraction has 230 states and 284 transitions. [2020-10-29 03:49:03,130 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 03:49:03,130 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 284 transitions. [2020-10-29 03:49:03,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-29 03:49:03,131 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:49:03,132 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:49:03,132 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-29 03:49:03,132 INFO L429 AbstractCegarLoop]: === Iteration 40 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:49:03,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:49:03,132 INFO L82 PathProgramCache]: Analyzing trace with hash 1688079367, now seen corresponding path program 6 times [2020-10-29 03:49:03,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:49:03,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [795070530] [2020-10-29 03:49:03,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:49:03,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:03,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:03,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:03,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:03,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:03,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:04,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:06,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:06,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:06,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:07,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:07,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:07,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:08,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:08,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 03:49:08,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 03:49:08,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 03:49:08,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:08,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:08,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 03:49:08,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:49:08,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 03:49:08,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:49:08,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:49:08,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:08,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:08,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:08,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:49:08,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:49:08,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:49:08,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:08,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:08,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:49:08,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:49:08,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:49:08,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:49:08,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-29 03:49:08,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:08,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:08,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:08,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:49:08,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:49:08,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:49:08,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:08,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:08,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:49:08,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:49:08,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:49:08,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:49:08,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-29 03:49:08,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:08,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:08,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:08,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:49:08,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:49:08,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:49:08,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:08,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:08,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:49:08,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:49:08,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:49:08,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:49:08,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-29 03:49:08,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:08,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:08,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:08,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:49:08,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:49:08,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:49:08,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:08,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:08,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:49:08,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:49:08,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:49:08,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:49:08,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-29 03:49:08,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:08,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:08,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:08,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:49:08,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:49:08,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:49:08,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:08,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:08,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:49:08,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:49:08,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:49:08,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:49:08,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-29 03:49:08,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:08,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:08,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:08,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:49:08,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:49:08,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:49:08,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:08,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:08,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:49:08,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:49:08,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:49:08,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:49:08,499 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 10 proven. 30 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2020-10-29 03:49:08,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [795070530] [2020-10-29 03:49:08,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:49:08,500 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 03:49:08,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192734602] [2020-10-29 03:49:08,500 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 03:49:08,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:49:08,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 03:49:08,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:49:08,501 INFO L87 Difference]: Start difference. First operand 230 states and 284 transitions. Second operand 16 states. [2020-10-29 03:49:09,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:49:09,516 INFO L93 Difference]: Finished difference Result 331 states and 413 transitions. [2020-10-29 03:49:09,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 03:49:09,517 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 75 [2020-10-29 03:49:09,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:49:09,519 INFO L225 Difference]: With dead ends: 331 [2020-10-29 03:49:09,519 INFO L226 Difference]: Without dead ends: 327 [2020-10-29 03:49:09,520 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=77, Invalid=475, Unknown=0, NotChecked=0, Total=552 [2020-10-29 03:49:09,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2020-10-29 03:49:09,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 305. [2020-10-29 03:49:09,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2020-10-29 03:49:09,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 381 transitions. [2020-10-29 03:49:09,584 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 381 transitions. Word has length 75 [2020-10-29 03:49:09,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:49:09,584 INFO L481 AbstractCegarLoop]: Abstraction has 305 states and 381 transitions. [2020-10-29 03:49:09,584 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 03:49:09,585 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 381 transitions. [2020-10-29 03:49:09,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-29 03:49:09,587 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:49:09,587 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:49:09,587 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-29 03:49:09,587 INFO L429 AbstractCegarLoop]: === Iteration 41 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:49:09,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:49:09,588 INFO L82 PathProgramCache]: Analyzing trace with hash -119721174, now seen corresponding path program 7 times [2020-10-29 03:49:09,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:49:09,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1134871919] [2020-10-29 03:49:09,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:49:09,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:09,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:09,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:10,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:10,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:10,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:10,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:11,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:11,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:13,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:14,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:14,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-29 03:49:14,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 03:49:14,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 03:49:14,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:14,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:14,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 03:49:14,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:49:14,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 03:49:14,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:49:14,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:49:14,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:14,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:14,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:14,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:49:14,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:49:14,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:49:14,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:14,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:14,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:49:14,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:49:14,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:49:14,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:49:14,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 03:49:14,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:14,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:14,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:14,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:49:14,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:49:14,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:49:14,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:14,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:14,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:49:14,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:49:14,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:49:14,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:49:14,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 03:49:14,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:14,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:14,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:14,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:49:14,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:49:14,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:49:14,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:14,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:14,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:49:14,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:49:14,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:49:14,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:49:14,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-29 03:49:14,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:14,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:14,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:14,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:49:14,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:49:14,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:49:14,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:14,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:14,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:49:14,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:49:14,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:49:14,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:49:14,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-29 03:49:14,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:14,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:14,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:14,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:49:14,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:49:14,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:49:14,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:14,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:14,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:49:14,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:49:14,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:49:14,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:49:14,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-29 03:49:14,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:14,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:14,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:14,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:49:14,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:49:14,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 03:49:14,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:14,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:14,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:49:14,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:49:14,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:49:14,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:49:14,910 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 10 proven. 36 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-29 03:49:14,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1134871919] [2020-10-29 03:49:14,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:49:14,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 03:49:14,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496356091] [2020-10-29 03:49:14,911 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 03:49:14,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:49:14,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 03:49:14,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:49:14,911 INFO L87 Difference]: Start difference. First operand 305 states and 381 transitions. Second operand 16 states. [2020-10-29 03:49:15,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:49:15,701 INFO L93 Difference]: Finished difference Result 368 states and 455 transitions. [2020-10-29 03:49:15,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 03:49:15,702 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 78 [2020-10-29 03:49:15,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:49:15,705 INFO L225 Difference]: With dead ends: 368 [2020-10-29 03:49:15,705 INFO L226 Difference]: Without dead ends: 364 [2020-10-29 03:49:15,706 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=402, Unknown=0, NotChecked=0, Total=462 [2020-10-29 03:49:15,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-10-29 03:49:15,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 294. [2020-10-29 03:49:15,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-10-29 03:49:15,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 366 transitions. [2020-10-29 03:49:15,772 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 366 transitions. Word has length 78 [2020-10-29 03:49:15,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:49:15,772 INFO L481 AbstractCegarLoop]: Abstraction has 294 states and 366 transitions. [2020-10-29 03:49:15,772 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 03:49:15,772 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 366 transitions. [2020-10-29 03:49:15,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-29 03:49:15,774 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:49:15,774 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:49:15,774 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-29 03:49:15,774 INFO L429 AbstractCegarLoop]: === Iteration 42 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:49:15,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:49:15,775 INFO L82 PathProgramCache]: Analyzing trace with hash -1452537444, now seen corresponding path program 8 times [2020-10-29 03:49:15,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:49:15,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1304410709] [2020-10-29 03:49:15,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:49:15,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:15,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:15,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:16,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:16,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:16,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:17,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:17,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:17,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:17,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:18,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:19,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:20,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:20,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:20,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:20,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:20,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:20,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-29 03:49:20,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-29 03:49:20,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 03:49:20,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:20,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:20,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 03:49:20,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:49:20,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 03:49:20,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:49:21,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:49:21,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:21,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:21,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:21,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:49:21,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:49:21,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:49:21,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:21,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:21,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:49:21,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:49:21,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:49:21,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:49:21,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 03:49:21,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:21,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:21,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:21,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:49:21,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:49:21,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:49:21,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:21,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:21,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:49:21,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:49:21,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:49:21,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:49:21,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 03:49:21,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:21,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:21,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:21,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:49:21,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:49:21,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:49:21,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:21,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:21,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:49:21,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:49:21,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:49:21,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:49:21,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-29 03:49:21,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:21,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:21,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:21,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:49:21,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:49:21,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:49:21,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:21,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:21,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:49:21,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:49:21,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:49:21,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:49:21,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 03:49:21,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:21,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:21,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:21,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:49:21,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:49:21,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:49:21,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:21,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:21,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:49:21,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:49:21,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:49:21,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:49:21,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-29 03:49:21,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:21,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:21,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:21,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:49:21,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:49:21,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:49:21,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:21,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:21,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:49:21,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:49:21,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:49:21,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:49:21,073 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 13 proven. 34 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-29 03:49:21,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1304410709] [2020-10-29 03:49:21,074 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:49:21,074 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 03:49:21,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812602466] [2020-10-29 03:49:21,074 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 03:49:21,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:49:21,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 03:49:21,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:49:21,075 INFO L87 Difference]: Start difference. First operand 294 states and 366 transitions. Second operand 16 states. [2020-10-29 03:49:21,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:49:21,842 INFO L93 Difference]: Finished difference Result 449 states and 565 transitions. [2020-10-29 03:49:21,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 03:49:21,843 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 78 [2020-10-29 03:49:21,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:49:21,847 INFO L225 Difference]: With dead ends: 449 [2020-10-29 03:49:21,847 INFO L226 Difference]: Without dead ends: 445 [2020-10-29 03:49:21,847 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2020-10-29 03:49:21,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2020-10-29 03:49:21,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 331. [2020-10-29 03:49:21,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2020-10-29 03:49:21,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 413 transitions. [2020-10-29 03:49:21,925 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 413 transitions. Word has length 78 [2020-10-29 03:49:21,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:49:21,926 INFO L481 AbstractCegarLoop]: Abstraction has 331 states and 413 transitions. [2020-10-29 03:49:21,926 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 03:49:21,926 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 413 transitions. [2020-10-29 03:49:21,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-29 03:49:21,928 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:49:21,928 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:49:21,928 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-29 03:49:21,928 INFO L429 AbstractCegarLoop]: === Iteration 43 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:49:21,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:49:21,929 INFO L82 PathProgramCache]: Analyzing trace with hash 476977760, now seen corresponding path program 9 times [2020-10-29 03:49:21,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:49:21,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [454571999] [2020-10-29 03:49:21,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:49:21,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:21,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:21,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:22,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:22,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:22,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking...