/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/eca-rers2012/Problem15_label48.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 07:52:09,107 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 07:52:09,111 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 07:52:09,151 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 07:52:09,152 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 07:52:09,153 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 07:52:09,155 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 07:52:09,158 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 07:52:09,160 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 07:52:09,165 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 07:52:09,166 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 07:52:09,168 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 07:52:09,168 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 07:52:09,170 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 07:52:09,171 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 07:52:09,173 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 07:52:09,174 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 07:52:09,175 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 07:52:09,177 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 07:52:09,191 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 07:52:09,193 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 07:52:09,200 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 07:52:09,203 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 07:52:09,205 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 07:52:09,216 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 07:52:09,216 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 07:52:09,217 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 07:52:09,222 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 07:52:09,223 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 07:52:09,227 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-10-29 07:52:09,237 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 07:52:09,238 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 07:52:09,239 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 07:52:09,241 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 07:52:09,309 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 07:52:09,310 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 07:52:09,315 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 07:52:09,315 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 07:52:09,316 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 07:52:09,317 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 07:52:09,318 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 07:52:09,319 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 07:52:09,319 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 07:52:09,319 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 07:52:09,321 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 07:52:09,322 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 07:52:09,322 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 07:52:09,322 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 07:52:09,323 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 07:52:09,323 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 07:52:09,323 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 07:52:09,324 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 07:52:09,325 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 07:52:09,325 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 07:52:09,325 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 07:52:09,326 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:52:09,326 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 07:52:09,327 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 07:52:09,327 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 07:52:09,327 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 07:52:09,328 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 07:52:09,328 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 07:52:09,328 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 07:52:09,328 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 07:52:09,851 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 07:52:09,883 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 07:52:09,886 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 07:52:09,888 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 07:52:09,889 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 07:52:09,890 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label48.c [2020-10-29 07:52:09,996 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e2ff99308/9e30e27f9aac4a1b9d72164198657fb8/FLAG66cc41fb6 [2020-10-29 07:52:11,004 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 07:52:11,005 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label48.c [2020-10-29 07:52:11,031 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e2ff99308/9e30e27f9aac4a1b9d72164198657fb8/FLAG66cc41fb6 [2020-10-29 07:52:11,521 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e2ff99308/9e30e27f9aac4a1b9d72164198657fb8 [2020-10-29 07:52:11,525 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 07:52:11,534 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 07:52:11,538 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 07:52:11,538 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 07:52:11,543 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 07:52:11,544 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:52:11" (1/1) ... [2020-10-29 07:52:11,550 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b0f4754 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:52:11, skipping insertion in model container [2020-10-29 07:52:11,551 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:52:11" (1/1) ... [2020-10-29 07:52:11,560 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 07:52:11,657 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 07:52:12,604 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:52:12,616 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 07:52:12,911 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:52:12,940 INFO L208 MainTranslator]: Completed translation [2020-10-29 07:52:12,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:52:12 WrapperNode [2020-10-29 07:52:12,942 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 07:52:12,943 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 07:52:12,944 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 07:52:12,944 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 07:52:12,962 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:52:12" (1/1) ... [2020-10-29 07:52:12,965 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:52:12" (1/1) ... [2020-10-29 07:52:13,031 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:52:12" (1/1) ... [2020-10-29 07:52:13,032 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:52:12" (1/1) ... [2020-10-29 07:52:13,121 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:52:12" (1/1) ... [2020-10-29 07:52:13,150 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:52:12" (1/1) ... [2020-10-29 07:52:13,181 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:52:12" (1/1) ... [2020-10-29 07:52:13,208 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 07:52:13,209 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 07:52:13,210 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 07:52:13,210 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 07:52:13,211 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:52:12" (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 07:52:13,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 07:52:13,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 07:52:13,301 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 07:52:13,301 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 07:52:13,302 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 07:52:13,302 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 07:52:13,302 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 07:52:13,302 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 07:52:13,302 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 07:52:13,303 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 07:52:13,303 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 07:52:13,303 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 07:52:13,303 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 07:52:13,303 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 07:52:13,304 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 07:52:13,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 07:52:13,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 07:52:13,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 07:52:13,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 07:52:13,304 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 07:52:13,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 07:52:16,925 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 07:52:16,926 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 07:52:16,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:52:16 BoogieIcfgContainer [2020-10-29 07:52:16,928 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 07:52:16,930 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 07:52:16,930 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 07:52:16,934 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 07:52:16,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 07:52:11" (1/3) ... [2020-10-29 07:52:16,935 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@548f404 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:52:16, skipping insertion in model container [2020-10-29 07:52:16,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:52:12" (2/3) ... [2020-10-29 07:52:16,935 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@548f404 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:52:16, skipping insertion in model container [2020-10-29 07:52:16,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:52:16" (3/3) ... [2020-10-29 07:52:16,937 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem15_label48.c [2020-10-29 07:52:16,951 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 07:52:16,956 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 07:52:16,970 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 07:52:17,001 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 07:52:17,001 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 07:52:17,001 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 07:52:17,002 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 07:52:17,002 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 07:52:17,002 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 07:52:17,002 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 07:52:17,002 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 07:52:17,030 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states. [2020-10-29 07:52:17,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-29 07:52:17,038 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:52:17,039 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:52:17,039 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:52:17,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:52:17,046 INFO L82 PathProgramCache]: Analyzing trace with hash 1195536441, now seen corresponding path program 1 times [2020-10-29 07:52:17,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:52:17,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [783671150] [2020-10-29 07:52:17,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:52:17,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:52:17,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:17,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:52:17,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-29 07:52:17,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:52:17,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 691 [2020-10-29 07:52:17,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:52:17,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:52:17,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:52:17,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:52:17,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 07:52:17,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 07:52:18,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:52:18,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:52:18,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:18,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:52:18,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:52:18,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:52:18,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 07:52:18,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:52:18,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:52:18,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:52:18,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:52:18,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:52:18,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:52:18,217 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 07:52:18,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [783671150] [2020-10-29 07:52:18,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:52:18,221 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 07:52:18,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688090017] [2020-10-29 07:52:18,227 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:52:18,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:52:18,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:52:18,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:52:18,252 INFO L87 Difference]: Start difference. First operand 441 states. Second operand 5 states. [2020-10-29 07:52:27,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:52:27,306 INFO L93 Difference]: Finished difference Result 1522 states and 2792 transitions. [2020-10-29 07:52:27,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 07:52:27,309 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-10-29 07:52:27,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:52:27,338 INFO L225 Difference]: With dead ends: 1522 [2020-10-29 07:52:27,339 INFO L226 Difference]: Without dead ends: 1011 [2020-10-29 07:52:27,354 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:52:27,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2020-10-29 07:52:27,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 1001. [2020-10-29 07:52:27,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1001 states. [2020-10-29 07:52:27,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1001 states to 1001 states and 1379 transitions. [2020-10-29 07:52:27,508 INFO L78 Accepts]: Start accepts. Automaton has 1001 states and 1379 transitions. Word has length 34 [2020-10-29 07:52:27,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:52:27,509 INFO L481 AbstractCegarLoop]: Abstraction has 1001 states and 1379 transitions. [2020-10-29 07:52:27,509 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:52:27,509 INFO L276 IsEmpty]: Start isEmpty. Operand 1001 states and 1379 transitions. [2020-10-29 07:52:27,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-29 07:52:27,515 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:52:27,515 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:52:27,516 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 07:52:27,516 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:52:27,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:52:27,517 INFO L82 PathProgramCache]: Analyzing trace with hash 203329422, now seen corresponding path program 1 times [2020-10-29 07:52:27,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:52:27,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [438129502] [2020-10-29 07:52:27,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:52:27,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:52:27,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:27,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:29,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:52:29,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-29 07:52:29,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:52:29,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2262 [2020-10-29 07:52:29,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:52:29,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:52:29,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:52:29,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:52:29,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 07:52:29,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:52:29,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:52:29,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:52:29,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:29,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:52:29,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:52:29,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:52:29,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 07:52:29,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:52:29,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:52:29,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:52:29,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:52:29,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:52:29,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:52:29,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:52:30,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:52:30,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:30,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:52:30,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 07:52:30,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:52:30,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-29 07:52:30,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:52:30,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:52:30,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:52:30,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:52:30,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 07:52:30,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:52:30,341 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:52:30,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [438129502] [2020-10-29 07:52:30,342 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:52:30,343 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:52:30,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535474322] [2020-10-29 07:52:30,346 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:52:30,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:52:30,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:52:30,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:52:30,351 INFO L87 Difference]: Start difference. First operand 1001 states and 1379 transitions. Second operand 7 states. [2020-10-29 07:52:39,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:52:39,938 INFO L93 Difference]: Finished difference Result 2336 states and 3158 transitions. [2020-10-29 07:52:39,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:52:39,940 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 103 [2020-10-29 07:52:39,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:52:39,954 INFO L225 Difference]: With dead ends: 2336 [2020-10-29 07:52:39,954 INFO L226 Difference]: Without dead ends: 1341 [2020-10-29 07:52:39,959 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:52:39,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2020-10-29 07:52:40,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 1324. [2020-10-29 07:52:40,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1324 states. [2020-10-29 07:52:40,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1324 states to 1324 states and 1734 transitions. [2020-10-29 07:52:40,054 INFO L78 Accepts]: Start accepts. Automaton has 1324 states and 1734 transitions. Word has length 103 [2020-10-29 07:52:40,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:52:40,055 INFO L481 AbstractCegarLoop]: Abstraction has 1324 states and 1734 transitions. [2020-10-29 07:52:40,055 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:52:40,055 INFO L276 IsEmpty]: Start isEmpty. Operand 1324 states and 1734 transitions. [2020-10-29 07:52:40,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-29 07:52:40,065 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:52:40,065 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:52:40,065 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 07:52:40,066 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:52:40,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:52:40,069 INFO L82 PathProgramCache]: Analyzing trace with hash -2020116022, now seen corresponding path program 1 times [2020-10-29 07:52:40,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:52:40,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1485142819] [2020-10-29 07:52:40,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:52:40,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:52:40,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:40,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:41,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:52:41,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-29 07:52:41,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:52:41,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1031 [2020-10-29 07:52:41,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:52:41,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:52:41,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:52:41,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:52:41,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 07:52:41,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:52:41,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:52:41,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:52:41,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:41,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:52:41,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:52:41,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:52:41,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 07:52:41,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:52:41,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:52:41,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:52:41,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:52:41,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:52:41,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:52:41,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:52:41,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:52:41,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:41,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:52:41,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 07:52:41,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:52:41,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-29 07:52:41,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:52:41,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:52:41,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:52:41,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:52:41,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 07:52:41,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:52:41,646 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:52:41,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1485142819] [2020-10-29 07:52:41,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:52:41,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:52:41,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146740550] [2020-10-29 07:52:41,650 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:52:41,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:52:41,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:52:41,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:52:41,652 INFO L87 Difference]: Start difference. First operand 1324 states and 1734 transitions. Second operand 7 states. [2020-10-29 07:52:52,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:52:52,736 INFO L93 Difference]: Finished difference Result 3010 states and 4138 transitions. [2020-10-29 07:52:52,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:52:52,737 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 108 [2020-10-29 07:52:52,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:52:52,748 INFO L225 Difference]: With dead ends: 3010 [2020-10-29 07:52:52,749 INFO L226 Difference]: Without dead ends: 1999 [2020-10-29 07:52:52,752 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:52:52,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1999 states. [2020-10-29 07:52:52,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1999 to 1952. [2020-10-29 07:52:52,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1952 states. [2020-10-29 07:52:52,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1952 states to 1952 states and 2419 transitions. [2020-10-29 07:52:52,836 INFO L78 Accepts]: Start accepts. Automaton has 1952 states and 2419 transitions. Word has length 108 [2020-10-29 07:52:52,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:52:52,837 INFO L481 AbstractCegarLoop]: Abstraction has 1952 states and 2419 transitions. [2020-10-29 07:52:52,837 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:52:52,837 INFO L276 IsEmpty]: Start isEmpty. Operand 1952 states and 2419 transitions. [2020-10-29 07:52:52,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-10-29 07:52:52,851 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:52:52,853 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:52:52,853 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 07:52:52,853 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:52:52,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:52:52,854 INFO L82 PathProgramCache]: Analyzing trace with hash -418987904, now seen corresponding path program 1 times [2020-10-29 07:52:52,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:52:52,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1071624012] [2020-10-29 07:52:52,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:52:52,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:52:52,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:53,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:53,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:54,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:54,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:56,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:57,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:52:57,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-29 07:52:57,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 07:52:57,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-29 07:52:57,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:52:57,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:52:57,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:52:57,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:52:57,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-29 07:52:57,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:52:58,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:52:58,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:52:58,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:58,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:52:58,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:52:58,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:52:58,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 07:52:58,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:52:58,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:52:58,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:52:58,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:52:58,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:52:58,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:52:58,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:52:58,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:52:58,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:58,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:52:58,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 07:52:58,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:52:58,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-29 07:52:58,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:52:58,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:52:58,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:52:58,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:52:58,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-29 07:52:58,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:52:58,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-29 07:52:58,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:52:58,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:58,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:52:58,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 07:52:58,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:52:58,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-29 07:52:58,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:52:58,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:52:58,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:52:58,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:52:58,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 07:52:58,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:52:58,682 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 53 proven. 74 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 07:52:58,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1071624012] [2020-10-29 07:52:58,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:52:58,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:52:58,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233769552] [2020-10-29 07:52:58,686 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:52:58,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:52:58,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:52:58,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:52:58,687 INFO L87 Difference]: Start difference. First operand 1952 states and 2419 transitions. Second operand 8 states. [2020-10-29 07:53:10,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:53:10,144 INFO L93 Difference]: Finished difference Result 4302 states and 5572 transitions. [2020-10-29 07:53:10,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 07:53:10,153 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 208 [2020-10-29 07:53:10,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:53:10,170 INFO L225 Difference]: With dead ends: 4302 [2020-10-29 07:53:10,171 INFO L226 Difference]: Without dead ends: 2974 [2020-10-29 07:53:10,175 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-29 07:53:10,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2974 states. [2020-10-29 07:53:10,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2974 to 2912. [2020-10-29 07:53:10,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2912 states. [2020-10-29 07:53:10,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2912 states to 2912 states and 3517 transitions. [2020-10-29 07:53:10,273 INFO L78 Accepts]: Start accepts. Automaton has 2912 states and 3517 transitions. Word has length 208 [2020-10-29 07:53:10,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:53:10,274 INFO L481 AbstractCegarLoop]: Abstraction has 2912 states and 3517 transitions. [2020-10-29 07:53:10,274 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:53:10,274 INFO L276 IsEmpty]: Start isEmpty. Operand 2912 states and 3517 transitions. [2020-10-29 07:53:10,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2020-10-29 07:53:10,280 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:53:10,280 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:53:10,281 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 07:53:10,281 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:53:10,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:53:10,281 INFO L82 PathProgramCache]: Analyzing trace with hash -1233246988, now seen corresponding path program 1 times [2020-10-29 07:53:10,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:53:10,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [218998711] [2020-10-29 07:53:10,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:53:10,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:53:10,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:10,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:11,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:15,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:53:15,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 328 [2020-10-29 07:53:15,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:53:15,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-29 07:53:15,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:53:15,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:53:15,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:53:15,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:53:15,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-29 07:53:15,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:53:15,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:53:15,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:53:15,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:15,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:53:15,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:53:15,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:53:15,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 07:53:15,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:53:15,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:53:15,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:53:15,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:53:15,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:53:15,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 07:53:15,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:53:15,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:53:15,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:16,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:53:16,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 07:53:16,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:53:16,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 380 [2020-10-29 07:53:16,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:53:16,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:53:16,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:53:16,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:53:16,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-29 07:53:16,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 07:53:16,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-29 07:53:16,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:53:16,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:16,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:53:16,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 07:53:16,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:53:16,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-29 07:53:16,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:53:16,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:53:16,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:53:16,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-29 07:53:16,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:53:16,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:53:16,831 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 52 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 07:53:16,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [218998711] [2020-10-29 07:53:16,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:53:16,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:53:16,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013389468] [2020-10-29 07:53:16,833 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:53:16,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:53:16,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:53:16,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:53:16,835 INFO L87 Difference]: Start difference. First operand 2912 states and 3517 transitions. Second operand 7 states. [2020-10-29 07:53:27,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:53:27,512 INFO L93 Difference]: Finished difference Result 5580 states and 6792 transitions. [2020-10-29 07:53:27,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 07:53:27,520 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 314 [2020-10-29 07:53:27,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:53:27,540 INFO L225 Difference]: With dead ends: 5580 [2020-10-29 07:53:27,540 INFO L226 Difference]: Without dead ends: 2981 [2020-10-29 07:53:27,547 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:53:27,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2981 states. [2020-10-29 07:53:27,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2981 to 2916. [2020-10-29 07:53:27,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2916 states. [2020-10-29 07:53:27,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2916 states to 2916 states and 3517 transitions. [2020-10-29 07:53:27,651 INFO L78 Accepts]: Start accepts. Automaton has 2916 states and 3517 transitions. Word has length 314 [2020-10-29 07:53:27,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:53:27,652 INFO L481 AbstractCegarLoop]: Abstraction has 2916 states and 3517 transitions. [2020-10-29 07:53:27,652 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:53:27,652 INFO L276 IsEmpty]: Start isEmpty. Operand 2916 states and 3517 transitions. [2020-10-29 07:53:27,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2020-10-29 07:53:27,660 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:53:27,661 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 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 07:53:27,661 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 07:53:27,661 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:53:27,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:53:27,662 INFO L82 PathProgramCache]: Analyzing trace with hash 1668107458, now seen corresponding path program 1 times [2020-10-29 07:53:27,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:53:27,662 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [943293179] [2020-10-29 07:53:27,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:53:27,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:53:27,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:27,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:28,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:29,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:30,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:32,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:53:32,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 343 [2020-10-29 07:53:32,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 07:53:32,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 07:53:32,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:53:32,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:53:32,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:53:32,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-29 07:53:32,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-29 07:53:32,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:53:32,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:53:32,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:53:32,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:32,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:53:32,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:53:32,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:53:32,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 07:53:32,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:53:32,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:53:32,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:53:32,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:53:32,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:53:32,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:53:33,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:53:33,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:53:33,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:33,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:53:33,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 07:53:33,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:53:33,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-29 07:53:33,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:53:33,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:53:33,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:53:33,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:53:33,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 07:53:33,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:53:33,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-29 07:53:33,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:53:33,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:33,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:34,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:53:34,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 07:53:34,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:53:34,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 938 [2020-10-29 07:53:34,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:53:34,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:53:34,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:53:34,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:53:34,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-29 07:53:34,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:53:34,543 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 116 proven. 26 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 07:53:34,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [943293179] [2020-10-29 07:53:34,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:53:34,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 07:53:34,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342408829] [2020-10-29 07:53:34,545 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 07:53:34,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:53:34,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 07:53:34,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:53:34,546 INFO L87 Difference]: Start difference. First operand 2916 states and 3517 transitions. Second operand 6 states. [2020-10-29 07:53:44,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:53:44,038 INFO L93 Difference]: Finished difference Result 6524 states and 8108 transitions. [2020-10-29 07:53:44,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 07:53:44,039 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 329 [2020-10-29 07:53:44,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:53:44,057 INFO L225 Difference]: With dead ends: 6524 [2020-10-29 07:53:44,057 INFO L226 Difference]: Without dead ends: 3581 [2020-10-29 07:53:44,066 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:53:44,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3581 states. [2020-10-29 07:53:44,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3581 to 3562. [2020-10-29 07:53:44,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3562 states. [2020-10-29 07:53:44,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3562 states to 3562 states and 4072 transitions. [2020-10-29 07:53:44,170 INFO L78 Accepts]: Start accepts. Automaton has 3562 states and 4072 transitions. Word has length 329 [2020-10-29 07:53:44,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:53:44,171 INFO L481 AbstractCegarLoop]: Abstraction has 3562 states and 4072 transitions. [2020-10-29 07:53:44,171 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 07:53:44,171 INFO L276 IsEmpty]: Start isEmpty. Operand 3562 states and 4072 transitions. [2020-10-29 07:53:44,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2020-10-29 07:53:44,179 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:53:44,180 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 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, 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, 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, 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, 1, 1] [2020-10-29 07:53:44,180 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 07:53:44,180 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:53:44,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:53:44,181 INFO L82 PathProgramCache]: Analyzing trace with hash -504463174, now seen corresponding path program 1 times [2020-10-29 07:53:44,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:53:44,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2044141211] [2020-10-29 07:53:44,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:53:44,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:53:44,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:45,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:46,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:53:46,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 407 [2020-10-29 07:53:46,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:53:46,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1794 [2020-10-29 07:53:46,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:53:46,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:53:46,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:53:46,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-29 07:53:46,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 07:53:46,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:53:46,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:53:46,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:53:46,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:46,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:53:46,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:53:46,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:53:46,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:53:46,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:53:46,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:53:46,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:53:46,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:53:46,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:53:46,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 07:53:46,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:53:46,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:53:46,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:46,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:53:46,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:53:46,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:53:46,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 323 [2020-10-29 07:53:46,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:53:46,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:53:46,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:53:46,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:53:46,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-29 07:53:46,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:53:46,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 07:53:46,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:53:46,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:47,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:53:47,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 07:53:47,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:53:47,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-29 07:53:47,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:53:47,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:53:47,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:53:47,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:53:47,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 07:53:47,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:53:47,293 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 134 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:53:47,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2044141211] [2020-10-29 07:53:47,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:53:47,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:53:47,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717814462] [2020-10-29 07:53:47,296 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:53:47,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:53:47,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:53:47,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:53:47,298 INFO L87 Difference]: Start difference. First operand 3562 states and 4072 transitions. Second operand 7 states. [2020-10-29 07:53:47,447 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-29 07:53:58,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:53:58,919 INFO L93 Difference]: Finished difference Result 8806 states and 10384 transitions. [2020-10-29 07:53:58,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:53:58,921 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 393 [2020-10-29 07:53:58,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:53:58,946 INFO L225 Difference]: With dead ends: 8806 [2020-10-29 07:53:58,947 INFO L226 Difference]: Without dead ends: 5557 [2020-10-29 07:53:58,956 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:53:58,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5557 states. [2020-10-29 07:53:59,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5557 to 5477. [2020-10-29 07:53:59,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5477 states. [2020-10-29 07:53:59,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5477 states to 5477 states and 6214 transitions. [2020-10-29 07:53:59,120 INFO L78 Accepts]: Start accepts. Automaton has 5477 states and 6214 transitions. Word has length 393 [2020-10-29 07:53:59,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:53:59,121 INFO L481 AbstractCegarLoop]: Abstraction has 5477 states and 6214 transitions. [2020-10-29 07:53:59,121 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:53:59,122 INFO L276 IsEmpty]: Start isEmpty. Operand 5477 states and 6214 transitions. [2020-10-29 07:53:59,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2020-10-29 07:53:59,130 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:53:59,131 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 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, 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, 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, 1, 1] [2020-10-29 07:53:59,131 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 07:53:59,131 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:53:59,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:53:59,132 INFO L82 PathProgramCache]: Analyzing trace with hash 866949304, now seen corresponding path program 1 times [2020-10-29 07:53:59,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:53:59,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [723693580] [2020-10-29 07:53:59,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:53:59,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:53:59,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:59,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:01,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:54:01,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 433 [2020-10-29 07:54:01,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:54:01,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2500 [2020-10-29 07:54:01,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:54:01,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:54:01,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:54:01,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-29 07:54:01,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-29 07:54:01,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:54:01,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:54:01,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:54:01,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:01,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:54:01,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:54:01,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:54:01,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 07:54:01,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:54:01,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:54:01,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:54:01,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:54:01,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:54:01,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:54:01,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:54:02,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:54:02,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:02,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:54:02,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:54:02,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:54:02,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 302 [2020-10-29 07:54:02,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:54:02,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:54:02,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:54:02,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:54:02,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-29 07:54:02,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:54:02,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 07:54:02,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:54:02,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:02,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:54:02,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:54:02,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:54:02,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-10-29 07:54:02,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:54:02,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:54:02,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:54:02,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:54:02,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-29 07:54:02,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:54:03,269 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 160 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:54:03,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [723693580] [2020-10-29 07:54:03,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:54:03,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:54:03,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578220671] [2020-10-29 07:54:03,271 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:54:03,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:54:03,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:54:03,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:54:03,272 INFO L87 Difference]: Start difference. First operand 5477 states and 6214 transitions. Second operand 7 states. [2020-10-29 07:54:06,635 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-29 07:54:13,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:54:13,395 INFO L93 Difference]: Finished difference Result 13234 states and 15054 transitions. [2020-10-29 07:54:13,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:54:13,397 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 419 [2020-10-29 07:54:13,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:54:13,452 INFO L225 Difference]: With dead ends: 13234 [2020-10-29 07:54:13,454 INFO L226 Difference]: Without dead ends: 8070 [2020-10-29 07:54:13,473 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-29 07:54:13,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8070 states. [2020-10-29 07:54:13,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8070 to 7693. [2020-10-29 07:54:13,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7693 states. [2020-10-29 07:54:13,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7693 states to 7693 states and 8581 transitions. [2020-10-29 07:54:13,729 INFO L78 Accepts]: Start accepts. Automaton has 7693 states and 8581 transitions. Word has length 419 [2020-10-29 07:54:13,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:54:13,730 INFO L481 AbstractCegarLoop]: Abstraction has 7693 states and 8581 transitions. [2020-10-29 07:54:13,730 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:54:13,730 INFO L276 IsEmpty]: Start isEmpty. Operand 7693 states and 8581 transitions. [2020-10-29 07:54:13,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2020-10-29 07:54:13,740 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:54:13,740 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:54:13,741 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 07:54:13,741 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:54:13,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:54:13,742 INFO L82 PathProgramCache]: Analyzing trace with hash 1067169840, now seen corresponding path program 1 times [2020-10-29 07:54:13,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:54:13,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1118785066] [2020-10-29 07:54:13,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:54:13,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:54:13,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:14,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:54:14,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 445 [2020-10-29 07:54:14,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:54:14,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 781 [2020-10-29 07:54:14,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:54:14,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:54:14,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:54:14,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-29 07:54:14,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 07:54:14,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:54:14,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:54:14,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:54:14,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:14,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:54:14,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:54:14,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:54:14,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 07:54:14,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:54:14,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:54:14,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:54:14,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:54:14,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:54:14,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:54:14,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:54:14,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:54:14,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:15,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:54:15,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:54:15,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:54:15,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-29 07:54:15,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:54:15,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:54:15,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:54:15,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:54:15,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:54:15,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:54:15,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:54:15,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:54:15,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:15,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:54:15,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:54:15,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:54:15,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-29 07:54:15,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:54:15,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:54:15,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:54:15,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:54:15,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:54:15,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:54:15,523 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 53 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-29 07:54:15,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1118785066] [2020-10-29 07:54:15,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:54:15,524 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:54:15,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557892434] [2020-10-29 07:54:15,525 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:54:15,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:54:15,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:54:15,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:54:15,526 INFO L87 Difference]: Start difference. First operand 7693 states and 8581 transitions. Second operand 5 states. [2020-10-29 07:54:25,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:54:25,505 INFO L93 Difference]: Finished difference Result 16124 states and 18407 transitions. [2020-10-29 07:54:25,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:54:25,509 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 431 [2020-10-29 07:54:25,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:54:25,546 INFO L225 Difference]: With dead ends: 16124 [2020-10-29 07:54:25,547 INFO L226 Difference]: Without dead ends: 9677 [2020-10-29 07:54:25,564 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:54:25,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9677 states. [2020-10-29 07:54:25,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9677 to 9652. [2020-10-29 07:54:25,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9652 states. [2020-10-29 07:54:25,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9652 states to 9652 states and 10983 transitions. [2020-10-29 07:54:25,828 INFO L78 Accepts]: Start accepts. Automaton has 9652 states and 10983 transitions. Word has length 431 [2020-10-29 07:54:25,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:54:25,829 INFO L481 AbstractCegarLoop]: Abstraction has 9652 states and 10983 transitions. [2020-10-29 07:54:25,829 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:54:25,830 INFO L276 IsEmpty]: Start isEmpty. Operand 9652 states and 10983 transitions. [2020-10-29 07:54:25,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2020-10-29 07:54:25,835 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:54:25,835 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1] [2020-10-29 07:54:25,836 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 07:54:25,836 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:54:25,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:54:25,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1727563723, now seen corresponding path program 1 times [2020-10-29 07:54:25,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:54:25,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [717722132] [2020-10-29 07:54:25,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:54:25,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:54:26,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:26,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:26,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:26,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:30,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:54:30,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 485 [2020-10-29 07:54:30,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:54:31,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-29 07:54:31,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:54:31,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:54:31,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:54:31,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 247 [2020-10-29 07:54:31,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 203 [2020-10-29 07:54:31,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:54:31,250 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-29 07:54:31,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:54:31,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:54:31,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:31,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:54:31,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:54:31,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:54:31,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:54:31,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:54:31,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:54:31,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:54:31,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:54:31,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:54:31,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:54:31,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:54:31,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:54:31,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:31,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:54:31,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-29 07:54:31,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:54:31,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-10-29 07:54:31,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:54:31,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:54:31,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:54:31,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:54:31,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 232 [2020-10-29 07:54:31,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:54:31,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-10-29 07:54:31,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:54:31,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:32,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:54:32,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 07:54:32,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:54:32,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 329 [2020-10-29 07:54:32,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:54:32,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:54:32,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:54:32,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:54:32,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-29 07:54:32,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:54:32,542 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 249 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:54:32,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [717722132] [2020-10-29 07:54:32,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:54:32,543 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:54:32,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676435561] [2020-10-29 07:54:32,544 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:54:32,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:54:32,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:54:32,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:54:32,545 INFO L87 Difference]: Start difference. First operand 9652 states and 10983 transitions. Second operand 7 states. [2020-10-29 07:54:36,572 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-29 07:54:41,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:54:41,615 INFO L93 Difference]: Finished difference Result 19956 states and 22745 transitions. [2020-10-29 07:54:41,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:54:41,618 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 471 [2020-10-29 07:54:41,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:54:41,657 INFO L225 Difference]: With dead ends: 19956 [2020-10-29 07:54:41,657 INFO L226 Difference]: Without dead ends: 10930 [2020-10-29 07:54:41,679 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:54:41,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10930 states. [2020-10-29 07:54:41,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10930 to 10271. [2020-10-29 07:54:41,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10271 states. [2020-10-29 07:54:41,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10271 states to 10271 states and 11598 transitions. [2020-10-29 07:54:41,939 INFO L78 Accepts]: Start accepts. Automaton has 10271 states and 11598 transitions. Word has length 471 [2020-10-29 07:54:41,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:54:41,940 INFO L481 AbstractCegarLoop]: Abstraction has 10271 states and 11598 transitions. [2020-10-29 07:54:41,940 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:54:41,940 INFO L276 IsEmpty]: Start isEmpty. Operand 10271 states and 11598 transitions. [2020-10-29 07:54:41,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2020-10-29 07:54:41,946 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:54:41,947 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:54:41,948 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 07:54:41,948 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:54:41,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:54:41,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1625891037, now seen corresponding path program 1 times [2020-10-29 07:54:41,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:54:41,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [515443522] [2020-10-29 07:54:41,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:54:42,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:54:42,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:42,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:44,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:46,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:54:46,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 523 [2020-10-29 07:54:46,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:54:46,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3748 [2020-10-29 07:54:46,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:54:46,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:54:46,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:54:46,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-29 07:54:46,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 07:54:46,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:54:46,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:54:46,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:54:46,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:46,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:54:46,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:54:46,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:54:46,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:54:46,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:54:46,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:54:46,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:54:46,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:54:46,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:54:46,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:54:46,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:54:46,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:54:46,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:46,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:54:46,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:54:46,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:54:46,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-29 07:54:46,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:54:46,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:54:46,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:54:46,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:54:46,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:54:46,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:54:46,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:54:46,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:54:46,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:46,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:54:46,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:54:46,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:54:46,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-29 07:54:46,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:54:46,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:54:46,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:54:46,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:54:46,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:54:46,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:54:46,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-29 07:54:46,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:54:46,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:46,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:54:46,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 07:54:46,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:54:46,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-10-29 07:54:46,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:54:46,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:54:46,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:54:46,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:54:46,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 07:54:46,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:54:46,973 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 229 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-29 07:54:46,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [515443522] [2020-10-29 07:54:46,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:54:46,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:54:46,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265594892] [2020-10-29 07:54:46,975 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:54:46,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:54:46,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:54:46,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:54:46,976 INFO L87 Difference]: Start difference. First operand 10271 states and 11598 transitions. Second operand 7 states. [2020-10-29 07:54:56,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:54:56,257 INFO L93 Difference]: Finished difference Result 22451 states and 26015 transitions. [2020-10-29 07:54:56,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:54:56,261 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 507 [2020-10-29 07:54:56,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:54:56,327 INFO L225 Difference]: With dead ends: 22451 [2020-10-29 07:54:56,328 INFO L226 Difference]: Without dead ends: 13426 [2020-10-29 07:54:56,355 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:54:56,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13426 states. [2020-10-29 07:54:56,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13426 to 12449. [2020-10-29 07:54:56,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12449 states. [2020-10-29 07:54:56,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12449 states to 12449 states and 14340 transitions. [2020-10-29 07:54:56,700 INFO L78 Accepts]: Start accepts. Automaton has 12449 states and 14340 transitions. Word has length 507 [2020-10-29 07:54:56,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:54:56,702 INFO L481 AbstractCegarLoop]: Abstraction has 12449 states and 14340 transitions. [2020-10-29 07:54:56,702 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:54:56,702 INFO L276 IsEmpty]: Start isEmpty. Operand 12449 states and 14340 transitions. [2020-10-29 07:54:56,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 525 [2020-10-29 07:54:56,709 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:54:56,710 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:54:56,710 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 07:54:56,710 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:54:56,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:54:56,711 INFO L82 PathProgramCache]: Analyzing trace with hash -193789959, now seen corresponding path program 1 times [2020-10-29 07:54:56,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:54:56,712 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1281794455] [2020-10-29 07:54:56,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:54:56,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:54:57,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:57,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:58,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:59,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:54:59,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 540 [2020-10-29 07:54:59,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:54:59,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2702 [2020-10-29 07:54:59,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:54:59,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:54:59,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:54:59,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-29 07:54:59,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-29 07:54:59,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:54:59,929 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-29 07:54:59,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:54:59,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:54:59,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:59,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:54:59,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:54:59,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:54:59,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:54:59,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:54:59,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:54:59,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:54:59,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:54:59,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:54:59,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:54:59,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:54:59,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:54:59,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:00,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:00,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:55:00,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:55:00,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-29 07:55:00,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:00,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:00,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:55:00,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:55:00,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:55:00,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:55:00,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:55:00,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:00,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:00,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:00,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:55:00,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:55:00,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-29 07:55:00,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:00,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:00,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:55:00,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:55:00,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:55:00,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:55:00,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-29 07:55:00,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:00,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:00,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:00,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-29 07:55:00,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:55:00,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-29 07:55:00,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:00,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:00,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:55:00,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:55:00,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-29 07:55:00,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:55:00,658 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 263 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-29 07:55:00,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1281794455] [2020-10-29 07:55:00,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:55:00,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:55:00,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370072454] [2020-10-29 07:55:00,660 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:55:00,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:55:00,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:55:00,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:55:00,661 INFO L87 Difference]: Start difference. First operand 12449 states and 14340 transitions. Second operand 7 states. [2020-10-29 07:55:13,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:55:13,923 INFO L93 Difference]: Finished difference Result 29115 states and 35256 transitions. [2020-10-29 07:55:13,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:55:13,928 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 524 [2020-10-29 07:55:13,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:55:13,991 INFO L225 Difference]: With dead ends: 29115 [2020-10-29 07:55:13,992 INFO L226 Difference]: Without dead ends: 17603 [2020-10-29 07:55:14,021 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:55:14,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17603 states. [2020-10-29 07:55:14,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17603 to 17176. [2020-10-29 07:55:14,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17176 states. [2020-10-29 07:55:14,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17176 states to 17176 states and 19731 transitions. [2020-10-29 07:55:14,394 INFO L78 Accepts]: Start accepts. Automaton has 17176 states and 19731 transitions. Word has length 524 [2020-10-29 07:55:14,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:55:14,395 INFO L481 AbstractCegarLoop]: Abstraction has 17176 states and 19731 transitions. [2020-10-29 07:55:14,395 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:55:14,395 INFO L276 IsEmpty]: Start isEmpty. Operand 17176 states and 19731 transitions. [2020-10-29 07:55:14,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 538 [2020-10-29 07:55:14,400 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:55:14,401 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:55:14,401 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 07:55:14,401 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:55:14,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:55:14,402 INFO L82 PathProgramCache]: Analyzing trace with hash 1222228794, now seen corresponding path program 1 times [2020-10-29 07:55:14,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:55:14,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [946689832] [2020-10-29 07:55:14,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:55:14,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:14,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:15,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:15,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 553 [2020-10-29 07:55:15,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:55:15,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1032 [2020-10-29 07:55:15,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:15,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:15,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:55:15,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-29 07:55:15,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-29 07:55:15,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:55:15,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:55:15,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:15,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:15,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:15,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:55:15,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:55:15,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:55:15,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:15,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:15,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:55:15,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:55:15,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:55:15,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:55:15,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:55:15,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:15,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:15,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:15,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:55:15,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:55:15,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-29 07:55:15,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:15,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:15,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:55:15,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:55:15,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:55:15,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:55:15,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:55:15,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:15,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:16,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:16,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:55:16,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:55:16,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-29 07:55:16,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:16,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:16,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:55:16,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:55:16,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:55:16,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:55:16,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-29 07:55:16,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:16,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:16,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:16,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-29 07:55:16,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:55:16,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-29 07:55:16,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:16,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:16,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:55:16,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:55:16,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-29 07:55:16,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:55:16,483 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 289 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-29 07:55:16,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [946689832] [2020-10-29 07:55:16,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:55:16,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:55:16,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969721052] [2020-10-29 07:55:16,485 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:55:16,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:55:16,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:55:16,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:55:16,486 INFO L87 Difference]: Start difference. First operand 17176 states and 19731 transitions. Second operand 7 states. [2020-10-29 07:55:28,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:55:28,204 INFO L93 Difference]: Finished difference Result 38773 states and 45772 transitions. [2020-10-29 07:55:28,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:55:28,206 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 537 [2020-10-29 07:55:28,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:55:28,275 INFO L225 Difference]: With dead ends: 38773 [2020-10-29 07:55:28,276 INFO L226 Difference]: Without dead ends: 21597 [2020-10-29 07:55:28,303 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:55:28,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21597 states. [2020-10-29 07:55:28,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21597 to 21557. [2020-10-29 07:55:28,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21557 states. [2020-10-29 07:55:28,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21557 states to 21557 states and 24604 transitions. [2020-10-29 07:55:28,756 INFO L78 Accepts]: Start accepts. Automaton has 21557 states and 24604 transitions. Word has length 537 [2020-10-29 07:55:28,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:55:28,757 INFO L481 AbstractCegarLoop]: Abstraction has 21557 states and 24604 transitions. [2020-10-29 07:55:28,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:55:28,758 INFO L276 IsEmpty]: Start isEmpty. Operand 21557 states and 24604 transitions. [2020-10-29 07:55:28,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 581 [2020-10-29 07:55:28,765 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:55:28,766 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 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, 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, 1, 1, 1] [2020-10-29 07:55:28,766 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 07:55:28,766 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:55:28,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:55:28,767 INFO L82 PathProgramCache]: Analyzing trace with hash -1268871660, now seen corresponding path program 1 times [2020-10-29 07:55:28,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:55:28,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1802928837] [2020-10-29 07:55:28,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:55:28,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:28,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:29,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:32,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:33,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:33,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 596 [2020-10-29 07:55:33,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:55:33,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-29 07:55:33,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:33,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:33,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 07:55:33,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 296 [2020-10-29 07:55:33,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 265 [2020-10-29 07:55:33,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:55:34,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:55:34,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:34,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:34,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:34,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:55:34,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:55:34,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:55:34,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:34,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:34,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:55:34,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:55:34,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:55:34,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:55:34,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:55:34,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:34,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:34,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:34,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:55:34,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:55:34,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-29 07:55:34,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:34,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:34,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:55:34,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:55:34,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-29 07:55:34,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:55:34,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:55:34,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:34,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:34,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:34,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:55:34,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:55:34,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-29 07:55:34,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:34,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:34,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 07:55:34,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:55:34,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-29 07:55:34,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:55:34,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-29 07:55:34,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:34,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:35,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:35,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-29 07:55:35,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:55:35,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-29 07:55:35,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:35,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:35,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:55:35,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:55:35,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-29 07:55:35,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:55:35,639 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 332 proven. 114 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 07:55:35,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1802928837] [2020-10-29 07:55:35,641 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:55:35,641 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 07:55:35,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390736674] [2020-10-29 07:55:35,642 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 07:55:35,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:55:35,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 07:55:35,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:55:35,643 INFO L87 Difference]: Start difference. First operand 21557 states and 24604 transitions. Second operand 10 states. [2020-10-29 07:55:38,841 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 67 [2020-10-29 07:55:43,961 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 70