/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/array-crafted/zero_sum_const_m4.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 03:26:46,643 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 03:26:46,647 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 03:26:46,693 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 03:26:46,694 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 03:26:46,696 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 03:26:46,698 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 03:26:46,701 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 03:26:46,705 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 03:26:46,706 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 03:26:46,708 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 03:26:46,710 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 03:26:46,711 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 03:26:46,713 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 03:26:46,715 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 03:26:46,717 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 03:26:46,719 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 03:26:46,721 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 03:26:46,724 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 03:26:46,727 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 03:26:46,732 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 03:26:46,735 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 03:26:46,738 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 03:26:46,742 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 03:26:46,757 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 03:26:46,758 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 03:26:46,758 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 03:26:46,762 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 03:26:46,763 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 03:26:46,768 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 03:26:46,768 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 03:26:46,773 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 03:26:46,776 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 03:26:46,778 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 03:26:46,780 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 03:26:46,781 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 03:26:46,783 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 03:26:46,783 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 03:26:46,783 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 03:26:46,802 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 03:26:46,807 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 03:26:46,808 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 03:26:46,877 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 03:26:46,878 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 03:26:46,885 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 03:26:46,886 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 03:26:46,886 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 03:26:46,886 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 03:26:46,887 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 03:26:46,887 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 03:26:46,887 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 03:26:46,887 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 03:26:46,889 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 03:26:46,889 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 03:26:46,890 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 03:26:46,890 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 03:26:46,890 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 03:26:46,890 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 03:26:46,890 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 03:26:46,891 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 03:26:46,891 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 03:26:46,891 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 03:26:46,891 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 03:26:46,891 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 03:26:46,892 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 03:26:46,892 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 03:26:46,892 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 03:26:46,892 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 03:26:46,893 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 03:26:46,893 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 03:26:46,893 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 03:26:46,893 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 03:26:47,385 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 03:26:47,426 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 03:26:47,431 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 03:26:47,433 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 03:26:47,434 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 03:26:47,436 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/zero_sum_const_m4.c [2020-10-29 03:26:47,535 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3a8bd35d5/1c1d4be1da594bc8987ba6a477f5a63f/FLAG420a4d97a [2020-10-29 03:26:48,376 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 03:26:48,377 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-crafted/zero_sum_const_m4.c [2020-10-29 03:26:48,391 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3a8bd35d5/1c1d4be1da594bc8987ba6a477f5a63f/FLAG420a4d97a [2020-10-29 03:26:48,649 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3a8bd35d5/1c1d4be1da594bc8987ba6a477f5a63f [2020-10-29 03:26:48,654 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 03:26:48,669 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 03:26:48,675 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 03:26:48,676 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 03:26:48,682 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 03:26:48,683 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:26:48" (1/1) ... [2020-10-29 03:26:48,690 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2107b355 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:26:48, skipping insertion in model container [2020-10-29 03:26:48,690 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:26:48" (1/1) ... [2020-10-29 03:26:48,703 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 03:26:48,737 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 03:26:48,967 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:26:48,982 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 03:26:49,017 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:26:49,044 INFO L208 MainTranslator]: Completed translation [2020-10-29 03:26:49,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:26:49 WrapperNode [2020-10-29 03:26:49,045 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 03:26:49,047 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 03:26:49,047 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 03:26:49,048 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 03:26:49,063 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:26:49" (1/1) ... [2020-10-29 03:26:49,063 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:26:49" (1/1) ... [2020-10-29 03:26:49,075 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:26:49" (1/1) ... [2020-10-29 03:26:49,076 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:26:49" (1/1) ... [2020-10-29 03:26:49,125 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:26:49" (1/1) ... [2020-10-29 03:26:49,163 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:26:49" (1/1) ... [2020-10-29 03:26:49,168 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:26:49" (1/1) ... [2020-10-29 03:26:49,174 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 03:26:49,177 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 03:26:49,177 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 03:26:49,178 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 03:26:49,179 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:26:49" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 03:26:49,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 03:26:49,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 03:26:49,287 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 03:26:49,287 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 03:26:49,287 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 03:26:49,287 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 03:26:49,287 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 03:26:49,288 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 03:26:49,288 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 03:26:49,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 03:26:49,288 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 03:26:49,288 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 03:26:49,289 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-29 03:26:49,289 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-29 03:26:49,289 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 03:26:49,289 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-29 03:26:49,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 03:26:49,289 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 03:26:49,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 03:26:49,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 03:26:49,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 03:26:49,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 03:26:49,855 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 03:26:49,855 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-29 03:26:49,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:26:49 BoogieIcfgContainer [2020-10-29 03:26:49,859 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 03:26:49,861 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 03:26:49,862 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 03:26:49,867 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 03:26:49,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 03:26:48" (1/3) ... [2020-10-29 03:26:49,868 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b408d9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:26:49, skipping insertion in model container [2020-10-29 03:26:49,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:26:49" (2/3) ... [2020-10-29 03:26:49,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b408d9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:26:49, skipping insertion in model container [2020-10-29 03:26:49,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:26:49" (3/3) ... [2020-10-29 03:26:49,872 INFO L111 eAbstractionObserver]: Analyzing ICFG zero_sum_const_m4.c [2020-10-29 03:26:49,892 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 03:26:49,899 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 03:26:49,922 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 03:26:49,964 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 03:26:49,964 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 03:26:49,965 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 03:26:49,965 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 03:26:49,965 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 03:26:49,965 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 03:26:49,965 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 03:26:49,965 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 03:26:49,992 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states. [2020-10-29 03:26:50,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-29 03:26:50,002 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:26:50,003 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] [2020-10-29 03:26:50,004 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:26:50,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:26:50,013 INFO L82 PathProgramCache]: Analyzing trace with hash 1429331599, now seen corresponding path program 1 times [2020-10-29 03:26:50,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:26:50,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [531748297] [2020-10-29 03:26:50,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:26:50,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:26:50,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:26:50,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:26:50,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:26:50,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:26:50,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:26:50,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:26:50,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:26:50,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:26:51,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:26:51,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:26:55,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:26:55,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 03:26:55,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 03:26:55,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 03:26:55,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:26:55,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:26:55,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 03:26:55,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 03:26:55,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 03:26:55,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-29 03:26:55,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:26:55,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:26:55,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:26:55,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:26:55,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:26:55,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:26:55,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 03:26:55,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:26:55,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:26:55,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:26:55,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:26:55,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:26:55,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:26:55,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:26:55,444 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [531748297] [2020-10-29 03:26:55,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:26:55,447 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 03:26:55,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682914365] [2020-10-29 03:26:55,456 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 03:26:55,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:26:55,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 03:26:55,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 03:26:55,484 INFO L87 Difference]: Start difference. First operand 49 states. Second operand 5 states. [2020-10-29 03:26:55,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:26:55,938 INFO L93 Difference]: Finished difference Result 109 states and 163 transitions. [2020-10-29 03:26:55,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 03:26:55,941 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2020-10-29 03:26:55,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:26:55,953 INFO L225 Difference]: With dead ends: 109 [2020-10-29 03:26:55,954 INFO L226 Difference]: Without dead ends: 57 [2020-10-29 03:26:55,959 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 03:26:55,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-29 03:26:56,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 48. [2020-10-29 03:26:56,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-29 03:26:56,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2020-10-29 03:26:56,078 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 29 [2020-10-29 03:26:56,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:26:56,079 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2020-10-29 03:26:56,080 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 03:26:56,081 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2020-10-29 03:26:56,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-29 03:26:56,086 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:26:56,088 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:26:56,089 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 03:26:56,092 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:26:56,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:26:56,096 INFO L82 PathProgramCache]: Analyzing trace with hash 551314867, now seen corresponding path program 1 times [2020-10-29 03:26:56,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:26:56,097 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1472186489] [2020-10-29 03:26:56,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:26:56,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:26:56,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:26:56,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:26:56,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:26:56,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:26:56,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:26:56,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:26:57,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:01,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:01,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-29 03:27:01,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 03:27:01,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 03:27:01,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:01,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:01,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:27:01,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 03:27:01,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 03:27:01,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-29 03:27:01,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:27:01,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:01,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:01,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:01,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:27:01,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:27:01,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 03:27:01,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:01,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:01,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:27:01,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:27:01,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:27:01,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:27:01,318 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-29 03:27:01,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1472186489] [2020-10-29 03:27:01,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:27:01,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 03:27:01,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573960946] [2020-10-29 03:27:01,322 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 03:27:01,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:27:01,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 03:27:01,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 03:27:01,328 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand 6 states. [2020-10-29 03:27:01,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:27:01,692 INFO L93 Difference]: Finished difference Result 104 states and 128 transitions. [2020-10-29 03:27:01,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 03:27:01,693 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 47 [2020-10-29 03:27:01,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:27:01,695 INFO L225 Difference]: With dead ends: 104 [2020-10-29 03:27:01,695 INFO L226 Difference]: Without dead ends: 66 [2020-10-29 03:27:01,697 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-29 03:27:01,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-29 03:27:01,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-10-29 03:27:01,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-29 03:27:01,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 74 transitions. [2020-10-29 03:27:01,726 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 74 transitions. Word has length 47 [2020-10-29 03:27:01,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:27:01,727 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 74 transitions. [2020-10-29 03:27:01,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 03:27:01,727 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 74 transitions. [2020-10-29 03:27:01,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-29 03:27:01,732 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:27:01,733 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 03:27:01,734 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 03:27:01,735 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:27:01,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:27:01,738 INFO L82 PathProgramCache]: Analyzing trace with hash 998541701, now seen corresponding path program 2 times [2020-10-29 03:27:01,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:27:01,739 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1806502130] [2020-10-29 03:27:01,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:27:01,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:01,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:02,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:03,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:05,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:06,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:06,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 03:27:06,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:27:06,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 03:27:06,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:06,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:06,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-29 03:27:06,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 03:27:06,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-29 03:27:06,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:27:08,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:27:08,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:08,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:08,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:08,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:27:08,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:27:08,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 03:27:08,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:08,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:08,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:27:08,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:27:08,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:27:08,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:27:09,036 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 03:27:09,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1806502130] [2020-10-29 03:27:09,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:27:09,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-29 03:27:09,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749786398] [2020-10-29 03:27:09,039 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-29 03:27:09,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:27:09,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-29 03:27:09,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=921, Unknown=0, NotChecked=0, Total=992 [2020-10-29 03:27:09,044 INFO L87 Difference]: Start difference. First operand 66 states and 74 transitions. Second operand 32 states. [2020-10-29 03:27:10,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:27:10,621 INFO L93 Difference]: Finished difference Result 119 states and 134 transitions. [2020-10-29 03:27:10,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-29 03:27:10,622 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 65 [2020-10-29 03:27:10,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:27:10,625 INFO L225 Difference]: With dead ends: 119 [2020-10-29 03:27:10,625 INFO L226 Difference]: Without dead ends: 113 [2020-10-29 03:27:10,629 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 6 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=81, Invalid=1041, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 03:27:10,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-29 03:27:10,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 107. [2020-10-29 03:27:10,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-29 03:27:10,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 122 transitions. [2020-10-29 03:27:10,647 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 122 transitions. Word has length 65 [2020-10-29 03:27:10,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:27:10,648 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 122 transitions. [2020-10-29 03:27:10,648 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-29 03:27:10,648 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 122 transitions. [2020-10-29 03:27:10,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-29 03:27:10,650 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:27:10,651 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-10-29 03:27:10,651 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 03:27:10,651 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:27:10,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:27:10,652 INFO L82 PathProgramCache]: Analyzing trace with hash 817790087, now seen corresponding path program 3 times [2020-10-29 03:27:10,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:27:10,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2067431757] [2020-10-29 03:27:10,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:27:10,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:10,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:10,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:10,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:10,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:10,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:11,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:15,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:15,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 03:27:15,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:27:15,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-29 03:27:15,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:15,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:15,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:27:15,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 03:27:15,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 03:27:15,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:27:15,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:27:15,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:15,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:15,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:15,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:27:15,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:27:15,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 03:27:15,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:15,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:15,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:27:15,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:27:15,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:27:15,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:27:15,851 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-29 03:27:15,852 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2067431757] [2020-10-29 03:27:15,852 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:27:15,852 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 03:27:15,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329752242] [2020-10-29 03:27:15,853 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 03:27:15,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:27:15,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 03:27:15,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:27:15,854 INFO L87 Difference]: Start difference. First operand 107 states and 122 transitions. Second operand 10 states. [2020-10-29 03:27:16,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:27:16,519 INFO L93 Difference]: Finished difference Result 233 states and 269 transitions. [2020-10-29 03:27:16,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 03:27:16,520 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 67 [2020-10-29 03:27:16,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:27:16,522 INFO L225 Difference]: With dead ends: 233 [2020-10-29 03:27:16,524 INFO L226 Difference]: Without dead ends: 135 [2020-10-29 03:27:16,526 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:27:16,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-10-29 03:27:16,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 118. [2020-10-29 03:27:16,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-29 03:27:16,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 132 transitions. [2020-10-29 03:27:16,561 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 132 transitions. Word has length 67 [2020-10-29 03:27:16,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:27:16,563 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 132 transitions. [2020-10-29 03:27:16,563 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 03:27:16,563 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 132 transitions. [2020-10-29 03:27:16,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-29 03:27:16,568 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:27:16,569 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2020-10-29 03:27:16,569 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 03:27:16,569 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:27:16,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:27:16,570 INFO L82 PathProgramCache]: Analyzing trace with hash 1555963337, now seen corresponding path program 4 times [2020-10-29 03:27:16,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:27:16,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1760726602] [2020-10-29 03:27:16,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:27:16,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:16,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:16,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:16,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:16,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:16,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:17,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:17,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:20,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:21,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:21,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 03:27:21,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 03:27:21,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 03:27:21,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:21,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:21,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:27:21,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:27:21,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 03:27:21,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:27:21,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:27:21,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:21,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:21,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:21,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:27:21,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:27:21,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:27:21,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:21,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:21,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:27:21,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:27:21,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:27:21,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:27:21,754 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-10-29 03:27:21,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1760726602] [2020-10-29 03:27:21,755 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:27:21,755 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 03:27:21,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130199894] [2020-10-29 03:27:21,756 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 03:27:21,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:27:21,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 03:27:21,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:27:21,757 INFO L87 Difference]: Start difference. First operand 118 states and 132 transitions. Second operand 10 states. [2020-10-29 03:27:22,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:27:22,341 INFO L93 Difference]: Finished difference Result 126 states and 140 transitions. [2020-10-29 03:27:22,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 03:27:22,342 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 69 [2020-10-29 03:27:22,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:27:22,343 INFO L225 Difference]: With dead ends: 126 [2020-10-29 03:27:22,343 INFO L226 Difference]: Without dead ends: 84 [2020-10-29 03:27:22,344 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:27:22,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-29 03:27:22,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2020-10-29 03:27:22,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-29 03:27:22,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 92 transitions. [2020-10-29 03:27:22,356 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 92 transitions. Word has length 69 [2020-10-29 03:27:22,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:27:22,356 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 92 transitions. [2020-10-29 03:27:22,356 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 03:27:22,356 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 92 transitions. [2020-10-29 03:27:22,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-29 03:27:22,358 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:27:22,358 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:27:22,358 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 03:27:22,358 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:27:22,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:27:22,359 INFO L82 PathProgramCache]: Analyzing trace with hash 854432983, now seen corresponding path program 5 times [2020-10-29 03:27:22,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:27:22,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1627973930] [2020-10-29 03:27:22,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:27:22,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:22,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:23,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:25,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:27,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:27,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-29 03:27:27,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:27:27,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-29 03:27:27,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:27,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:27,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 52 [2020-10-29 03:27:27,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 03:27:27,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 03:27:27,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:27:32,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:27:32,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:32,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:32,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:32,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:27:32,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:27:32,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:27:32,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:32,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:32,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:27:32,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:27:32,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:27:32,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:27:32,982 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-29 03:27:32,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1627973930] [2020-10-29 03:27:32,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:27:32,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2020-10-29 03:27:32,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016345029] [2020-10-29 03:27:32,984 INFO L461 AbstractCegarLoop]: Interpolant automaton has 48 states [2020-10-29 03:27:32,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:27:32,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2020-10-29 03:27:32,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=2155, Unknown=0, NotChecked=0, Total=2256 [2020-10-29 03:27:32,986 INFO L87 Difference]: Start difference. First operand 84 states and 92 transitions. Second operand 48 states. [2020-10-29 03:27:36,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:27:36,800 INFO L93 Difference]: Finished difference Result 148 states and 163 transitions. [2020-10-29 03:27:36,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-29 03:27:36,801 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 83 [2020-10-29 03:27:36,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:27:36,803 INFO L225 Difference]: With dead ends: 148 [2020-10-29 03:27:36,803 INFO L226 Difference]: Without dead ends: 142 [2020-10-29 03:27:36,805 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 6 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=111, Invalid=2339, Unknown=0, NotChecked=0, Total=2450 [2020-10-29 03:27:36,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-10-29 03:27:36,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 137. [2020-10-29 03:27:36,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-29 03:27:36,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 152 transitions. [2020-10-29 03:27:36,830 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 152 transitions. Word has length 83 [2020-10-29 03:27:36,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:27:36,831 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 152 transitions. [2020-10-29 03:27:36,831 INFO L482 AbstractCegarLoop]: Interpolant automaton has 48 states. [2020-10-29 03:27:36,831 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 152 transitions. [2020-10-29 03:27:36,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-29 03:27:36,833 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:27:36,833 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:27:36,833 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 03:27:36,833 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:27:36,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:27:36,834 INFO L82 PathProgramCache]: Analyzing trace with hash 356250457, now seen corresponding path program 6 times [2020-10-29 03:27:36,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:27:36,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1402128608] [2020-10-29 03:27:36,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:27:36,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:36,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:36,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:36,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:37,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:37,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:38,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:41,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:41,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 03:27:41,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:27:41,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-29 03:27:41,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:41,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:41,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:27:41,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-29 03:27:41,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 03:27:41,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:27:42,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:27:42,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:42,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:42,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:42,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:27:42,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:27:42,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:27:42,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:42,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:42,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:27:42,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:27:42,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:27:42,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:27:42,044 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-29 03:27:42,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1402128608] [2020-10-29 03:27:42,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:27:42,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 03:27:42,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301566916] [2020-10-29 03:27:42,045 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 03:27:42,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:27:42,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 03:27:42,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:27:42,047 INFO L87 Difference]: Start difference. First operand 137 states and 152 transitions. Second operand 12 states. [2020-10-29 03:27:43,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:27:43,302 INFO L93 Difference]: Finished difference Result 273 states and 309 transitions. [2020-10-29 03:27:43,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 03:27:43,303 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 85 [2020-10-29 03:27:43,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:27:43,305 INFO L225 Difference]: With dead ends: 273 [2020-10-29 03:27:43,305 INFO L226 Difference]: Without dead ends: 166 [2020-10-29 03:27:43,307 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2020-10-29 03:27:43,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-29 03:27:43,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 151. [2020-10-29 03:27:43,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-29 03:27:43,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 166 transitions. [2020-10-29 03:27:43,356 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 166 transitions. Word has length 85 [2020-10-29 03:27:43,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:27:43,357 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 166 transitions. [2020-10-29 03:27:43,357 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 03:27:43,357 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 166 transitions. [2020-10-29 03:27:43,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-29 03:27:43,359 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:27:43,362 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:27:43,362 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 03:27:43,363 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:27:43,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:27:43,363 INFO L82 PathProgramCache]: Analyzing trace with hash 2119785625, now seen corresponding path program 7 times [2020-10-29 03:27:43,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:27:43,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [366307998] [2020-10-29 03:27:43,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:27:43,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:43,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:43,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:43,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:43,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:43,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:43,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:48,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:48,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 03:27:48,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:27:48,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 03:27:48,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:48,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:48,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:27:48,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:27:48,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 03:27:48,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:27:48,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:27:48,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:48,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:48,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:48,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:27:48,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:27:48,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:27:48,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:48,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:48,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:27:48,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:27:48,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:27:48,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:27:48,567 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-29 03:27:48,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [366307998] [2020-10-29 03:27:48,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:27:48,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 03:27:48,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53592245] [2020-10-29 03:27:48,570 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 03:27:48,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:27:48,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 03:27:48,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:27:48,573 INFO L87 Difference]: Start difference. First operand 151 states and 166 transitions. Second operand 12 states. [2020-10-29 03:27:49,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:27:49,514 INFO L93 Difference]: Finished difference Result 253 states and 276 transitions. [2020-10-29 03:27:49,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 03:27:49,515 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 85 [2020-10-29 03:27:49,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:27:49,517 INFO L225 Difference]: With dead ends: 253 [2020-10-29 03:27:49,517 INFO L226 Difference]: Without dead ends: 111 [2020-10-29 03:27:49,518 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:27:49,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-29 03:27:49,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 102. [2020-10-29 03:27:49,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-29 03:27:49,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 110 transitions. [2020-10-29 03:27:49,544 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 110 transitions. Word has length 85 [2020-10-29 03:27:49,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:27:49,544 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 110 transitions. [2020-10-29 03:27:49,544 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 03:27:49,544 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 110 transitions. [2020-10-29 03:27:49,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-29 03:27:49,552 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:27:49,552 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:27:49,552 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 03:27:49,552 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:27:49,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:27:49,553 INFO L82 PathProgramCache]: Analyzing trace with hash -1021657175, now seen corresponding path program 8 times [2020-10-29 03:27:49,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:27:49,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1077016433] [2020-10-29 03:27:49,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:27:49,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:49,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:51,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:54,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:54,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 03:27:54,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:27:54,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 03:27:54,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:54,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:54,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 68 [2020-10-29 03:27:54,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 03:27:54,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 03:27:54,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:28:01,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:28:01,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:28:01,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:01,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:28:01,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:28:01,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:28:01,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:28:01,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:28:01,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:28:01,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:28:01,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:28:01,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:28:01,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:28:02,057 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-29 03:28:02,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1077016433] [2020-10-29 03:28:02,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:28:02,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2020-10-29 03:28:02,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243126269] [2020-10-29 03:28:02,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 64 states [2020-10-29 03:28:02,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:28:02,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2020-10-29 03:28:02,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=3898, Unknown=0, NotChecked=0, Total=4032 [2020-10-29 03:28:02,062 INFO L87 Difference]: Start difference. First operand 102 states and 110 transitions. Second operand 64 states. [2020-10-29 03:28:08,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:28:08,660 INFO L93 Difference]: Finished difference Result 182 states and 197 transitions. [2020-10-29 03:28:08,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2020-10-29 03:28:08,661 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 101 [2020-10-29 03:28:08,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:28:08,666 INFO L225 Difference]: With dead ends: 182 [2020-10-29 03:28:08,666 INFO L226 Difference]: Without dead ends: 176 [2020-10-29 03:28:08,668 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 5 SyntacticMatches, 4 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=144, Invalid=4146, Unknown=0, NotChecked=0, Total=4290 [2020-10-29 03:28:08,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-10-29 03:28:08,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 167. [2020-10-29 03:28:08,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-10-29 03:28:08,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 182 transitions. [2020-10-29 03:28:08,684 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 182 transitions. Word has length 101 [2020-10-29 03:28:08,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:28:08,684 INFO L481 AbstractCegarLoop]: Abstraction has 167 states and 182 transitions. [2020-10-29 03:28:08,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 64 states. [2020-10-29 03:28:08,685 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 182 transitions. [2020-10-29 03:28:08,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-29 03:28:08,686 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:28:08,686 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:28:08,686 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 03:28:08,686 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:28:08,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:28:08,687 INFO L82 PathProgramCache]: Analyzing trace with hash 299604395, now seen corresponding path program 9 times [2020-10-29 03:28:08,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:28:08,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [252135426] [2020-10-29 03:28:08,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:28:08,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:28:08,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:08,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:08,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:08,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:09,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:13,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:28:13,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-29 03:28:13,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:28:13,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 03:28:13,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:28:13,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:28:13,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:28:13,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 03:28:13,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 03:28:13,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:28:13,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:28:13,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:28:13,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:13,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:28:13,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:28:13,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:28:13,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:28:13,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:28:13,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:28:13,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:28:13,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:28:13,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:28:13,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:28:13,915 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-29 03:28:13,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [252135426] [2020-10-29 03:28:13,916 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:28:13,916 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 03:28:13,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681488056] [2020-10-29 03:28:13,917 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 03:28:13,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:28:13,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 03:28:13,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:28:13,918 INFO L87 Difference]: Start difference. First operand 167 states and 182 transitions. Second operand 14 states. [2020-10-29 03:28:15,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:28:15,047 INFO L93 Difference]: Finished difference Result 353 states and 389 transitions. [2020-10-29 03:28:15,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 03:28:15,049 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 103 [2020-10-29 03:28:15,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:28:15,051 INFO L225 Difference]: With dead ends: 353 [2020-10-29 03:28:15,051 INFO L226 Difference]: Without dead ends: 195 [2020-10-29 03:28:15,052 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:28:15,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-10-29 03:28:15,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 178. [2020-10-29 03:28:15,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-10-29 03:28:15,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 192 transitions. [2020-10-29 03:28:15,075 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 192 transitions. Word has length 103 [2020-10-29 03:28:15,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:28:15,075 INFO L481 AbstractCegarLoop]: Abstraction has 178 states and 192 transitions. [2020-10-29 03:28:15,075 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 03:28:15,075 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 192 transitions. [2020-10-29 03:28:15,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-29 03:28:15,077 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:28:15,077 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:28:15,078 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 03:28:15,078 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:28:15,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:28:15,078 INFO L82 PathProgramCache]: Analyzing trace with hash -2052283923, now seen corresponding path program 10 times [2020-10-29 03:28:15,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:28:15,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2003108390] [2020-10-29 03:28:15,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:28:15,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:28:15,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:15,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:15,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:15,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:15,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:20,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:28:20,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-29 03:28:20,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:28:20,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 03:28:20,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:28:20,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:28:20,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:28:20,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-29 03:28:20,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-29 03:28:20,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:28:20,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:28:20,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:28:20,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:20,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:28:20,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:28:20,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:28:20,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:28:20,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:28:20,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:28:20,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:28:20,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:28:20,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:28:20,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:28:20,306 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2020-10-29 03:28:20,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2003108390] [2020-10-29 03:28:20,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:28:20,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 03:28:20,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895399761] [2020-10-29 03:28:20,307 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 03:28:20,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:28:20,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 03:28:20,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:28:20,309 INFO L87 Difference]: Start difference. First operand 178 states and 192 transitions. Second operand 14 states. [2020-10-29 03:28:21,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:28:21,370 INFO L93 Difference]: Finished difference Result 186 states and 200 transitions. [2020-10-29 03:28:21,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 03:28:21,371 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 105 [2020-10-29 03:28:21,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:28:21,373 INFO L225 Difference]: With dead ends: 186 [2020-10-29 03:28:21,373 INFO L226 Difference]: Without dead ends: 120 [2020-10-29 03:28:21,375 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=142, Invalid=458, Unknown=0, NotChecked=0, Total=600 [2020-10-29 03:28:21,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-10-29 03:28:21,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2020-10-29 03:28:21,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-29 03:28:21,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 128 transitions. [2020-10-29 03:28:21,386 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 128 transitions. Word has length 105 [2020-10-29 03:28:21,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:28:21,387 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 128 transitions. [2020-10-29 03:28:21,387 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 03:28:21,387 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 128 transitions. [2020-10-29 03:28:21,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-29 03:28:21,388 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:28:21,388 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:28:21,389 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 03:28:21,389 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:28:21,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:28:21,390 INFO L82 PathProgramCache]: Analyzing trace with hash 629608955, now seen corresponding path program 11 times [2020-10-29 03:28:21,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:28:21,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [566198838] [2020-10-29 03:28:21,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:28:21,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:28:21,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:23,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:26,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:28:26,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-29 03:28:26,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:28:26,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 03:28:26,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:28:26,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:28:26,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 84 [2020-10-29 03:28:26,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 03:28:26,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-29 03:28:26,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:28:38,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:28:38,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:28:38,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:38,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:28:38,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:28:38,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:28:38,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:28:38,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:28:38,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:28:38,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:28:38,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:28:38,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:28:38,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:28:38,960 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-29 03:28:38,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [566198838] [2020-10-29 03:28:38,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:28:38,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [80] total 80 [2020-10-29 03:28:38,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392723935] [2020-10-29 03:28:38,961 INFO L461 AbstractCegarLoop]: Interpolant automaton has 80 states [2020-10-29 03:28:38,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:28:38,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2020-10-29 03:28:38,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=6152, Unknown=0, NotChecked=0, Total=6320 [2020-10-29 03:28:38,964 INFO L87 Difference]: Start difference. First operand 120 states and 128 transitions. Second operand 80 states. [2020-10-29 03:28:50,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:28:50,098 INFO L93 Difference]: Finished difference Result 215 states and 230 transitions. [2020-10-29 03:28:50,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2020-10-29 03:28:50,099 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 119 [2020-10-29 03:28:50,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:28:50,100 INFO L225 Difference]: With dead ends: 215 [2020-10-29 03:28:50,101 INFO L226 Difference]: Without dead ends: 209 [2020-10-29 03:28:50,103 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 5 SyntacticMatches, 4 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 409 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=178, Invalid=6464, Unknown=0, NotChecked=0, Total=6642 [2020-10-29 03:28:50,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-10-29 03:28:50,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 197. [2020-10-29 03:28:50,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-10-29 03:28:50,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 212 transitions. [2020-10-29 03:28:50,121 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 212 transitions. Word has length 119 [2020-10-29 03:28:50,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:28:50,122 INFO L481 AbstractCegarLoop]: Abstraction has 197 states and 212 transitions. [2020-10-29 03:28:50,122 INFO L482 AbstractCegarLoop]: Interpolant automaton has 80 states. [2020-10-29 03:28:50,122 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 212 transitions. [2020-10-29 03:28:50,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-29 03:28:50,124 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:28:50,124 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:28:50,124 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 03:28:50,124 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:28:50,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:28:50,125 INFO L82 PathProgramCache]: Analyzing trace with hash -1093628035, now seen corresponding path program 12 times [2020-10-29 03:28:50,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:28:50,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [684121216] [2020-10-29 03:28:50,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:28:50,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:28:50,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:50,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:50,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:50,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:50,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:55,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:28:55,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-29 03:28:55,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:28:55,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 03:28:55,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:28:55,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:28:55,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 03:28:55,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-29 03:28:55,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 03:28:55,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:28:55,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:28:55,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:28:55,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:55,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:28:55,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:28:55,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:28:55,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:28:55,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:28:55,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:28:55,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:28:55,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:28:55,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:28:55,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:28:55,506 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 25 proven. 36 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2020-10-29 03:28:55,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [684121216] [2020-10-29 03:28:55,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:28:55,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 03:28:55,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888049468] [2020-10-29 03:28:55,508 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 03:28:55,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:28:55,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 03:28:55,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:28:55,510 INFO L87 Difference]: Start difference. First operand 197 states and 212 transitions. Second operand 16 states. [2020-10-29 03:28:58,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:28:58,234 INFO L93 Difference]: Finished difference Result 389 states and 425 transitions. [2020-10-29 03:28:58,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 03:28:58,236 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 121 [2020-10-29 03:28:58,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:28:58,238 INFO L225 Difference]: With dead ends: 389 [2020-10-29 03:28:58,238 INFO L226 Difference]: Without dead ends: 234 [2020-10-29 03:28:58,239 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=204, Invalid=666, Unknown=0, NotChecked=0, Total=870 [2020-10-29 03:28:58,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-10-29 03:28:58,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 211. [2020-10-29 03:28:58,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-10-29 03:28:58,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 226 transitions. [2020-10-29 03:28:58,258 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 226 transitions. Word has length 121 [2020-10-29 03:28:58,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:28:58,258 INFO L481 AbstractCegarLoop]: Abstraction has 211 states and 226 transitions. [2020-10-29 03:28:58,258 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 03:28:58,258 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 226 transitions. [2020-10-29 03:28:58,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-29 03:28:58,259 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:28:58,260 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:28:58,260 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 03:28:58,260 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:28:58,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:28:58,260 INFO L82 PathProgramCache]: Analyzing trace with hash 812259517, now seen corresponding path program 13 times [2020-10-29 03:28:58,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:28:58,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1283254606] [2020-10-29 03:28:58,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:28:58,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:28:58,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:58,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:58,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:58,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:58,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:00,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:03,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:29:03,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-29 03:29:03,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:29:03,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 03:29:03,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:29:03,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:29:03,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 03:29:03,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 03:29:03,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-29 03:29:03,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:29:03,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:29:03,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:29:03,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:03,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:29:03,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:29:03,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:29:03,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:29:03,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:29:03,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:29:03,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:29:03,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:29:03,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:29:03,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:29:03,584 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 36 proven. 25 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2020-10-29 03:29:03,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1283254606] [2020-10-29 03:29:03,584 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:29:03,584 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 03:29:03,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071619342] [2020-10-29 03:29:03,585 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 03:29:03,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:29:03,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 03:29:03,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:29:03,586 INFO L87 Difference]: Start difference. First operand 211 states and 226 transitions. Second operand 16 states. [2020-10-29 03:29:05,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:29:05,140 INFO L93 Difference]: Finished difference Result 349 states and 372 transitions. [2020-10-29 03:29:05,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 03:29:05,143 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 121 [2020-10-29 03:29:05,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:29:05,145 INFO L225 Difference]: With dead ends: 349 [2020-10-29 03:29:05,145 INFO L226 Difference]: Without dead ends: 147 [2020-10-29 03:29:05,146 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2020-10-29 03:29:05,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-10-29 03:29:05,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 138. [2020-10-29 03:29:05,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-29 03:29:05,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 146 transitions. [2020-10-29 03:29:05,159 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 146 transitions. Word has length 121 [2020-10-29 03:29:05,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:29:05,159 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 146 transitions. [2020-10-29 03:29:05,159 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 03:29:05,159 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 146 transitions. [2020-10-29 03:29:05,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-29 03:29:05,160 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:29:05,161 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:29:05,161 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 03:29:05,161 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:29:05,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:29:05,162 INFO L82 PathProgramCache]: Analyzing trace with hash -1557810227, now seen corresponding path program 14 times [2020-10-29 03:29:05,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:29:05,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [899863721] [2020-10-29 03:29:05,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:29:05,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:29:05,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:08,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:11,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:29:11,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-29 03:29:11,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:29:11,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6508 [2020-10-29 03:29:11,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:29:11,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:29:11,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 100 [2020-10-29 03:29:11,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 03:29:11,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-29 03:29:11,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:29:13,124 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-10-29 03:29:36,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:29:36,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:29:36,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:36,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:29:36,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:29:36,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:29:36,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:29:36,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:29:36,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:29:36,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:29:36,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:29:36,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:29:36,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:29:36,612 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-29 03:29:36,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [899863721] [2020-10-29 03:29:36,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:29:36,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97] total 97 [2020-10-29 03:29:36,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655985659] [2020-10-29 03:29:36,614 INFO L461 AbstractCegarLoop]: Interpolant automaton has 97 states [2020-10-29 03:29:36,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:29:36,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2020-10-29 03:29:36,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=9112, Unknown=0, NotChecked=0, Total=9312 [2020-10-29 03:29:36,617 INFO L87 Difference]: Start difference. First operand 138 states and 146 transitions. Second operand 97 states. [2020-10-29 03:30:00,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:30:00,149 INFO L93 Difference]: Finished difference Result 244 states and 259 transitions. [2020-10-29 03:30:00,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2020-10-29 03:30:00,151 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 137 [2020-10-29 03:30:00,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:30:00,154 INFO L225 Difference]: With dead ends: 244 [2020-10-29 03:30:00,154 INFO L226 Difference]: Without dead ends: 238 [2020-10-29 03:30:00,158 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 5 SyntacticMatches, 3 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 23.9s TimeCoverageRelationStatistics Valid=210, Invalid=9492, Unknown=0, NotChecked=0, Total=9702 [2020-10-29 03:30:00,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-10-29 03:30:00,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 227. [2020-10-29 03:30:00,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-10-29 03:30:00,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 242 transitions. [2020-10-29 03:30:00,183 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 242 transitions. Word has length 137 [2020-10-29 03:30:00,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:30:00,183 INFO L481 AbstractCegarLoop]: Abstraction has 227 states and 242 transitions. [2020-10-29 03:30:00,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has 97 states. [2020-10-29 03:30:00,184 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 242 transitions. [2020-10-29 03:30:00,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-29 03:30:00,185 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:30:00,185 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:30:00,185 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 03:30:00,185 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:30:00,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:30:00,186 INFO L82 PathProgramCache]: Analyzing trace with hash 96859343, now seen corresponding path program 15 times [2020-10-29 03:30:00,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:30:00,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1537713465] [2020-10-29 03:30:00,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:30:00,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:00,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:00,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:00,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:00,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:00,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:05,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:05,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-29 03:30:05,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:30:05,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 03:30:05,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:05,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:05,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 03:30:05,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-29 03:30:05,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 03:30:05,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:05,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:30:05,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:05,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:05,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:05,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:30:05,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:05,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:30:05,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:05,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:05,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:05,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:05,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:05,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:05,835 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 36 proven. 49 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2020-10-29 03:30:05,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1537713465] [2020-10-29 03:30:05,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:30:05,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 03:30:05,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98752808] [2020-10-29 03:30:05,837 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 03:30:05,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:30:05,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 03:30:05,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2020-10-29 03:30:05,838 INFO L87 Difference]: Start difference. First operand 227 states and 242 transitions. Second operand 18 states. [2020-10-29 03:30:09,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:30:09,494 INFO L93 Difference]: Finished difference Result 447 states and 483 transitions. [2020-10-29 03:30:09,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-29 03:30:09,496 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 139 [2020-10-29 03:30:09,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:30:09,499 INFO L225 Difference]: With dead ends: 447 [2020-10-29 03:30:09,499 INFO L226 Difference]: Without dead ends: 268 [2020-10-29 03:30:09,500 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=260, Invalid=862, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 03:30:09,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2020-10-29 03:30:09,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 241. [2020-10-29 03:30:09,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2020-10-29 03:30:09,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 256 transitions. [2020-10-29 03:30:09,528 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 256 transitions. Word has length 139 [2020-10-29 03:30:09,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:30:09,528 INFO L481 AbstractCegarLoop]: Abstraction has 241 states and 256 transitions. [2020-10-29 03:30:09,528 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 03:30:09,529 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 256 transitions. [2020-10-29 03:30:09,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-29 03:30:09,530 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:30:09,530 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:30:09,530 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 03:30:09,530 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:30:09,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:30:09,531 INFO L82 PathProgramCache]: Analyzing trace with hash -1058566641, now seen corresponding path program 16 times [2020-10-29 03:30:09,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:30:09,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1142408311] [2020-10-29 03:30:09,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:30:09,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:09,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:09,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:09,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:09,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:09,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:13,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:14,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:14,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-29 03:30:14,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:30:14,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 03:30:14,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:14,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:14,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 03:30:14,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-29 03:30:14,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-29 03:30:14,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:15,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:30:15,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:15,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:15,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:15,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:30:15,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:15,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:30:15,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:15,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:15,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:15,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:15,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:15,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:15,146 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 49 proven. 36 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2020-10-29 03:30:15,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1142408311] [2020-10-29 03:30:15,147 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:30:15,147 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 03:30:15,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074812089] [2020-10-29 03:30:15,147 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 03:30:15,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:30:15,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 03:30:15,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2020-10-29 03:30:15,148 INFO L87 Difference]: Start difference. First operand 241 states and 256 transitions. Second operand 18 states. [2020-10-29 03:30:17,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:30:17,650 INFO L93 Difference]: Finished difference Result 397 states and 420 transitions. [2020-10-29 03:30:17,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 03:30:17,652 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 139 [2020-10-29 03:30:17,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:30:17,654 INFO L225 Difference]: With dead ends: 397 [2020-10-29 03:30:17,654 INFO L226 Difference]: Without dead ends: 165 [2020-10-29 03:30:17,655 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=156, Invalid=494, Unknown=0, NotChecked=0, Total=650 [2020-10-29 03:30:17,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-10-29 03:30:17,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 156. [2020-10-29 03:30:17,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-29 03:30:17,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 164 transitions. [2020-10-29 03:30:17,671 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 164 transitions. Word has length 139 [2020-10-29 03:30:17,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:30:17,671 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 164 transitions. [2020-10-29 03:30:17,671 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 03:30:17,671 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 164 transitions. [2020-10-29 03:30:17,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-29 03:30:17,672 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:30:17,673 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:30:17,673 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 03:30:17,673 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:30:17,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:30:17,674 INFO L82 PathProgramCache]: Analyzing trace with hash -1503541985, now seen corresponding path program 17 times [2020-10-29 03:30:17,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:30:17,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1245265693] [2020-10-29 03:30:17,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:30:17,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:17,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:22,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking...