/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/array-crafted/mapsum5.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 08:43:11,060 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 08:43:11,063 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 08:43:11,098 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 08:43:11,098 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 08:43:11,100 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 08:43:11,101 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 08:43:11,104 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 08:43:11,106 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 08:43:11,107 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 08:43:11,108 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 08:43:11,110 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 08:43:11,110 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 08:43:11,111 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 08:43:11,112 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 08:43:11,114 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 08:43:11,115 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 08:43:11,117 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 08:43:11,121 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 08:43:11,125 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 08:43:11,129 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 08:43:11,131 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 08:43:11,132 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 08:43:11,133 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 08:43:11,136 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 08:43:11,136 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 08:43:11,137 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 08:43:11,138 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 08:43:11,138 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 08:43:11,139 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 08:43:11,139 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 08:43:11,140 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 08:43:11,141 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 08:43:11,142 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 08:43:11,143 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 08:43:11,143 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 08:43:11,144 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 08:43:11,145 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 08:43:11,145 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 08:43:11,146 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 08:43:11,147 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 08:43:11,148 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 08:43:11,179 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 08:43:11,179 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 08:43:11,181 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 08:43:11,181 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 08:43:11,181 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 08:43:11,182 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 08:43:11,182 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 08:43:11,182 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 08:43:11,182 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 08:43:11,183 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 08:43:11,183 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 08:43:11,183 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 08:43:11,183 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 08:43:11,184 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 08:43:11,184 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 08:43:11,184 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 08:43:11,184 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 08:43:11,185 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 08:43:11,185 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 08:43:11,185 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 08:43:11,186 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 08:43:11,186 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 08:43:11,186 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 08:43:11,187 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 08:43:11,187 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 08:43:11,187 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 08:43:11,187 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 08:43:11,188 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 08:43:11,188 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 08:43:11,188 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 08:43:11,691 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 08:43:11,734 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 08:43:11,738 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 08:43:11,740 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 08:43:11,741 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 08:43:11,743 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/mapsum5.i [2020-10-28 08:43:11,837 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/94e160b4e/a205ebb16b38461c946b7b85c4146f01/FLAGb7c43d86b [2020-10-28 08:43:12,448 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 08:43:12,448 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-crafted/mapsum5.i [2020-10-28 08:43:12,456 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/94e160b4e/a205ebb16b38461c946b7b85c4146f01/FLAGb7c43d86b [2020-10-28 08:43:12,809 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/94e160b4e/a205ebb16b38461c946b7b85c4146f01 [2020-10-28 08:43:12,814 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 08:43:12,821 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 08:43:12,825 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 08:43:12,825 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 08:43:12,829 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 08:43:12,830 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:43:12" (1/1) ... [2020-10-28 08:43:12,833 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c7591c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:43:12, skipping insertion in model container [2020-10-28 08:43:12,834 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:43:12" (1/1) ... [2020-10-28 08:43:12,842 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 08:43:12,859 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 08:43:13,035 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 08:43:13,045 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 08:43:13,070 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 08:43:13,088 INFO L208 MainTranslator]: Completed translation [2020-10-28 08:43:13,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:43:13 WrapperNode [2020-10-28 08:43:13,088 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 08:43:13,090 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 08:43:13,090 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 08:43:13,090 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 08:43:13,106 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:43:13" (1/1) ... [2020-10-28 08:43:13,106 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:43:13" (1/1) ... [2020-10-28 08:43:13,115 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:43:13" (1/1) ... [2020-10-28 08:43:13,115 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:43:13" (1/1) ... [2020-10-28 08:43:13,124 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:43:13" (1/1) ... [2020-10-28 08:43:13,130 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:43:13" (1/1) ... [2020-10-28 08:43:13,132 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:43:13" (1/1) ... [2020-10-28 08:43:13,135 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 08:43:13,136 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 08:43:13,136 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 08:43:13,136 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 08:43:13,137 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:43:13" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 08:43:13,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 08:43:13,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 08:43:13,207 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 08:43:13,207 INFO L138 BoogieDeclarations]: Found implementation of procedure mapsum [2020-10-28 08:43:13,208 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 08:43:13,208 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 08:43:13,208 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 08:43:13,208 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-28 08:43:13,208 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-28 08:43:13,208 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 08:43:13,209 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 08:43:13,209 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 08:43:13,209 INFO L130 BoogieDeclarations]: Found specification of procedure mapsum [2020-10-28 08:43:13,209 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 08:43:13,209 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 08:43:13,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 08:43:13,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 08:43:13,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 08:43:13,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 08:43:13,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 08:43:13,568 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 08:43:13,569 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-28 08:43:13,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:43:13 BoogieIcfgContainer [2020-10-28 08:43:13,571 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 08:43:13,573 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 08:43:13,573 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 08:43:13,577 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 08:43:13,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 08:43:12" (1/3) ... [2020-10-28 08:43:13,579 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f495d3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:43:13, skipping insertion in model container [2020-10-28 08:43:13,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:43:13" (2/3) ... [2020-10-28 08:43:13,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f495d3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:43:13, skipping insertion in model container [2020-10-28 08:43:13,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:43:13" (3/3) ... [2020-10-28 08:43:13,582 INFO L111 eAbstractionObserver]: Analyzing ICFG mapsum5.i [2020-10-28 08:43:13,598 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 08:43:13,603 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 08:43:13,618 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 08:43:13,652 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 08:43:13,653 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 08:43:13,653 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 08:43:13,654 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 08:43:13,654 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 08:43:13,654 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 08:43:13,655 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 08:43:13,655 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 08:43:13,676 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-10-28 08:43:13,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-28 08:43:13,690 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:43:13,691 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:43:13,692 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:43:13,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:43:13,708 INFO L82 PathProgramCache]: Analyzing trace with hash -62284816, now seen corresponding path program 1 times [2020-10-28 08:43:13,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:43:13,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1661806472] [2020-10-28 08:43:13,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:43:13,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:14,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:14,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:14,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:14,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:14,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:14,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:15,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:15,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-28 08:43:15,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 08:43:15,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1986 [2020-10-28 08:43:15,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:15,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:15,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:15,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-28 08:43:15,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:15,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 08:43:16,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:43:16,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:16,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:16,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:16,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:43:16,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:43:16,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 08:43:16,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:16,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:16,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:16,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:43:16,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:16,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:43:16,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 08:43:16,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:16,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:16,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:16,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 08:43:16,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:43:16,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 08:43:16,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:16,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:16,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:16,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 08:43:16,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:16,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:43:16,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 08:43:16,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:16,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:16,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:16,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:16,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 08:43:16,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:43:16,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 08:43:16,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:16,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:16,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:16,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 08:43:16,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:16,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:43:16,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-28 08:43:16,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:16,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:16,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:16,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:16,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 08:43:16,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:43:16,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 08:43:16,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:16,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:16,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:16,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 08:43:16,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:16,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:43:16,138 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-28 08:43:16,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1661806472] [2020-10-28 08:43:16,141 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:43:16,141 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-10-28 08:43:16,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970345038] [2020-10-28 08:43:16,147 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-28 08:43:16,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:43:16,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-28 08:43:16,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 08:43:16,167 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2020-10-28 08:43:16,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:43:16,293 INFO L93 Difference]: Finished difference Result 63 states and 84 transitions. [2020-10-28 08:43:16,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 08:43:16,295 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 35 [2020-10-28 08:43:16,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:43:16,304 INFO L225 Difference]: With dead ends: 63 [2020-10-28 08:43:16,305 INFO L226 Difference]: Without dead ends: 29 [2020-10-28 08:43:16,309 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 08:43:16,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-28 08:43:16,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-28 08:43:16,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-28 08:43:16,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-10-28 08:43:16,357 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 35 [2020-10-28 08:43:16,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:43:16,358 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-10-28 08:43:16,358 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-28 08:43:16,358 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-10-28 08:43:16,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-28 08:43:16,360 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:43:16,361 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:43:16,361 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 08:43:16,361 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:43:16,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:43:16,362 INFO L82 PathProgramCache]: Analyzing trace with hash -836638934, now seen corresponding path program 1 times [2020-10-28 08:43:16,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:43:16,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1218684391] [2020-10-28 08:43:16,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:43:16,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:16,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:16,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:16,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:16,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:16,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:17,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:18,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:18,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-28 08:43:18,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 08:43:18,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2541 [2020-10-28 08:43:18,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:18,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:18,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 08:43:18,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 08:43:18,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-28 08:43:18,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:43:18,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:43:18,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:18,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:18,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:18,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:43:18,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:43:18,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:43:18,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:18,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:18,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:18,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:43:18,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:18,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:43:18,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 08:43:18,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:18,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:18,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:19,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:19,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 08:43:19,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:43:19,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 08:43:19,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:19,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:19,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:43:19,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:43:19,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 08:43:19,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:43:19,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 08:43:19,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:19,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:19,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:19,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:19,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 08:43:19,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:43:19,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 08:43:19,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:19,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:19,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:43:19,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:43:19,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 08:43:19,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:19,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-28 08:43:19,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:19,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:19,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:19,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 08:43:19,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:43:19,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 08:43:19,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:19,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:19,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 08:43:19,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:43:19,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:43:19,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:43:19,117 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-28 08:43:19,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1218684391] [2020-10-28 08:43:19,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 08:43:19,119 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 08:43:19,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420834764] [2020-10-28 08:43:19,121 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 08:43:19,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:43:19,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 08:43:19,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 08:43:19,124 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 6 states. [2020-10-28 08:43:19,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:43:19,333 INFO L93 Difference]: Finished difference Result 50 states and 60 transitions. [2020-10-28 08:43:19,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 08:43:19,334 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2020-10-28 08:43:19,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:43:19,335 INFO L225 Difference]: With dead ends: 50 [2020-10-28 08:43:19,335 INFO L226 Difference]: Without dead ends: 31 [2020-10-28 08:43:19,337 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-28 08:43:19,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-28 08:43:19,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2020-10-28 08:43:19,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-28 08:43:19,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-10-28 08:43:19,346 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 35 [2020-10-28 08:43:19,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:43:19,347 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-10-28 08:43:19,347 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 08:43:19,347 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-10-28 08:43:19,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-28 08:43:19,348 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:43:19,349 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:43:19,349 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 08:43:19,349 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:43:19,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:43:19,350 INFO L82 PathProgramCache]: Analyzing trace with hash 1482508808, now seen corresponding path program 1 times [2020-10-28 08:43:19,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:43:19,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [144357426] [2020-10-28 08:43:19,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:43:19,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:19,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:19,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:19,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:19,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:19,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:21,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:21,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-28 08:43:21,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:43:21,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2414 [2020-10-28 08:43:21,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:21,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:21,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 08:43:21,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 08:43:21,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 08:43:21,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:43:21,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:43:21,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:21,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:21,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:21,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:43:21,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:43:21,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 08:43:21,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:21,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:21,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:21,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:43:21,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:21,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:43:21,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 08:43:21,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:21,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:21,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:21,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:21,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 08:43:21,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:43:21,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-28 08:43:21,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:21,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:21,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:43:21,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:43:21,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 08:43:21,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:43:21,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 08:43:21,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:21,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:21,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:21,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:21,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 08:43:21,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:43:21,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 08:43:21,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:21,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:21,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:43:21,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:43:21,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 08:43:21,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:21,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 08:43:21,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:21,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:21,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:21,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 08:43:21,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:43:21,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 08:43:21,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:21,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:21,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:21,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 08:43:21,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:21,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:21,946 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-28 08:43:21,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [144357426] [2020-10-28 08:43:21,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 08:43:21,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 08:43:21,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199197291] [2020-10-28 08:43:21,947 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 08:43:21,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:43:21,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 08:43:21,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 08:43:21,949 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 5 states. [2020-10-28 08:43:22,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:43:22,070 INFO L93 Difference]: Finished difference Result 47 states and 52 transitions. [2020-10-28 08:43:22,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 08:43:22,071 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 41 [2020-10-28 08:43:22,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:43:22,072 INFO L225 Difference]: With dead ends: 47 [2020-10-28 08:43:22,072 INFO L226 Difference]: Without dead ends: 32 [2020-10-28 08:43:22,073 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 08:43:22,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-28 08:43:22,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-28 08:43:22,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-28 08:43:22,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-28 08:43:22,081 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 41 [2020-10-28 08:43:22,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:43:22,082 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-28 08:43:22,082 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 08:43:22,082 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-28 08:43:22,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-28 08:43:22,084 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:43:22,087 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:43:22,087 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 08:43:22,088 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:43:22,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:43:22,088 INFO L82 PathProgramCache]: Analyzing trace with hash -274705114, now seen corresponding path program 1 times [2020-10-28 08:43:22,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:43:22,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [117060646] [2020-10-28 08:43:22,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:43:22,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:22,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:22,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:22,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:22,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:23,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:23,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:23,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:27,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:27,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-28 08:43:27,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 08:43:27,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-28 08:43:27,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:27,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:27,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:43:27,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 08:43:27,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 08:43:27,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 08:43:27,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:43:27,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:27,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:27,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:27,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:43:27,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:43:27,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 08:43:27,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:27,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:27,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:27,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:43:27,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:27,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:43:27,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 08:43:27,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:27,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:27,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:27,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 08:43:27,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:43:27,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 08:43:27,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:27,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:27,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:27,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 08:43:27,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:27,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:27,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 08:43:27,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:27,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:27,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:27,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 08:43:27,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:43:27,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 08:43:27,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:27,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:27,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:27,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 08:43:27,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:27,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:27,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 08:43:27,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:27,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:27,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:27,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 08:43:27,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:43:27,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 08:43:27,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:27,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:27,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:27,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 08:43:27,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:27,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:43:27,263 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-10-28 08:43:27,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [117060646] [2020-10-28 08:43:27,264 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 08:43:27,264 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 08:43:27,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006331995] [2020-10-28 08:43:27,265 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 08:43:27,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:43:27,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 08:43:27,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 08:43:27,266 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 4 states. [2020-10-28 08:43:27,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:43:27,378 INFO L93 Difference]: Finished difference Result 55 states and 63 transitions. [2020-10-28 08:43:27,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 08:43:27,379 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2020-10-28 08:43:27,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:43:27,381 INFO L225 Difference]: With dead ends: 55 [2020-10-28 08:43:27,381 INFO L226 Difference]: Without dead ends: 33 [2020-10-28 08:43:27,384 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 08:43:27,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-28 08:43:27,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2020-10-28 08:43:27,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-28 08:43:27,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-10-28 08:43:27,401 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 43 [2020-10-28 08:43:27,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:43:27,403 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-10-28 08:43:27,403 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 08:43:27,403 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-10-28 08:43:27,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-28 08:43:27,406 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:43:27,406 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:43:27,406 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 08:43:27,406 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:43:27,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:43:27,410 INFO L82 PathProgramCache]: Analyzing trace with hash -11654744, now seen corresponding path program 1 times [2020-10-28 08:43:27,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:43:27,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [141147499] [2020-10-28 08:43:27,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:43:27,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:27,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:27,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:27,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:27,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:27,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:27,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:27,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:32,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:32,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-28 08:43:32,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 08:43:32,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 08:43:32,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:32,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:32,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 08:43:32,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 08:43:32,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-28 08:43:32,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:32,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:43:32,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:32,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:32,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:32,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:43:32,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:43:32,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 08:43:32,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:32,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:32,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:32,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:43:32,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:32,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:43:32,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-28 08:43:32,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:32,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:32,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:32,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:32,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 08:43:32,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:43:32,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 08:43:32,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:32,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:32,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:43:32,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:43:32,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 08:43:32,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 08:43:32,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-28 08:43:32,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:32,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:32,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:32,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:32,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 08:43:32,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:43:32,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-28 08:43:32,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:32,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:32,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:43:32,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:43:32,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 08:43:32,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:32,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 08:43:32,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:32,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:32,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:32,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 08:43:32,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:43:32,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 08:43:32,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:32,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:32,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 08:43:32,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:43:32,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 08:43:32,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:43:32,689 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-28 08:43:32,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [141147499] [2020-10-28 08:43:32,690 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:43:32,690 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 08:43:32,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224608827] [2020-10-28 08:43:32,691 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 08:43:32,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:43:32,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 08:43:32,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-28 08:43:32,693 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 7 states. [2020-10-28 08:43:32,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:43:32,975 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2020-10-28 08:43:32,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 08:43:32,976 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 45 [2020-10-28 08:43:32,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:43:32,977 INFO L225 Difference]: With dead ends: 56 [2020-10-28 08:43:32,977 INFO L226 Difference]: Without dead ends: 35 [2020-10-28 08:43:32,978 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-28 08:43:32,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-28 08:43:32,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2020-10-28 08:43:32,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-28 08:43:32,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-10-28 08:43:32,985 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 45 [2020-10-28 08:43:32,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:43:32,986 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-10-28 08:43:32,986 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 08:43:32,986 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-10-28 08:43:32,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-28 08:43:32,987 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:43:32,987 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:43:32,988 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 08:43:32,988 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:43:32,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:43:32,988 INFO L82 PathProgramCache]: Analyzing trace with hash 1299305734, now seen corresponding path program 2 times [2020-10-28 08:43:32,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:43:32,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [214687443] [2020-10-28 08:43:32,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:43:33,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:33,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:33,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:34,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:35,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:37,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:38,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:38,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-28 08:43:38,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:43:38,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-28 08:43:38,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:38,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:38,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 08:43:38,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 08:43:38,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 08:43:38,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:38,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:43:38,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:38,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:38,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:38,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:43:38,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:43:38,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:43:38,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:38,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:38,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:38,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:43:38,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:38,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:43:38,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-28 08:43:38,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:38,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:38,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:38,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 08:43:38,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:43:38,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 08:43:38,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:38,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:38,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:38,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:43:38,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:38,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:43:38,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 08:43:38,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:38,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:38,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:38,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 08:43:38,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:43:38,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 08:43:38,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:38,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:38,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:38,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:43:38,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:38,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:43:38,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-28 08:43:38,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:38,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:38,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:38,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 08:43:38,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:43:38,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 08:43:38,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:38,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:38,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:38,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:43:38,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:38,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:43:38,157 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-10-28 08:43:38,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [214687443] [2020-10-28 08:43:38,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:43:38,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 08:43:38,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953145301] [2020-10-28 08:43:38,160 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 08:43:38,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:43:38,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 08:43:38,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 08:43:38,162 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 5 states. [2020-10-28 08:43:38,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:43:38,277 INFO L93 Difference]: Finished difference Result 60 states and 68 transitions. [2020-10-28 08:43:38,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 08:43:38,278 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 51 [2020-10-28 08:43:38,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:43:38,279 INFO L225 Difference]: With dead ends: 60 [2020-10-28 08:43:38,279 INFO L226 Difference]: Without dead ends: 36 [2020-10-28 08:43:38,280 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 08:43:38,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-28 08:43:38,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-10-28 08:43:38,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-28 08:43:38,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2020-10-28 08:43:38,294 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 51 [2020-10-28 08:43:38,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:43:38,294 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2020-10-28 08:43:38,294 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 08:43:38,295 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2020-10-28 08:43:38,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-28 08:43:38,297 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:43:38,297 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:43:38,297 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 08:43:38,297 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:43:38,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:43:38,299 INFO L82 PathProgramCache]: Analyzing trace with hash 1456211848, now seen corresponding path program 3 times [2020-10-28 08:43:38,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:43:38,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2094446813] [2020-10-28 08:43:38,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:43:38,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:38,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:39,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:40,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:43,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:43,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-28 08:43:43,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 08:43:43,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 08:43:43,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:43,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:43,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-28 08:43:43,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 08:43:43,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-28 08:43:43,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:43:44,413 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 55 [2020-10-28 08:43:44,662 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 53 [2020-10-28 08:43:44,870 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 47 [2020-10-28 08:43:47,227 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 40 [2020-10-28 08:43:47,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:43:47,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:47,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:47,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:47,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:43:47,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:43:47,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 08:43:47,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:47,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:47,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:47,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:43:47,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:47,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:47,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 08:43:47,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:47,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:47,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:47,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:47,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:47,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 08:43:47,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 08:43:47,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 403 [2020-10-28 08:43:47,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:47,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:47,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 08:43:47,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:43:47,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 08:43:47,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:43:48,610 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2020-10-28 08:43:48,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 08:43:48,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:48,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:48,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:49,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:49,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 08:43:49,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:43:49,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 659 [2020-10-28 08:43:49,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:49,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:49,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 08:43:49,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:43:49,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 08:43:49,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:43:51,738 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 43 [2020-10-28 08:43:51,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 08:43:51,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:51,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:51,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:51,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 08:43:51,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:43:51,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-28 08:43:51,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:51,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:51,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 08:43:51,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:43:51,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 08:43:51,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:52,666 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2020-10-28 08:43:52,705 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 6 proven. 51 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-28 08:43:52,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2094446813] [2020-10-28 08:43:52,706 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:43:52,706 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-28 08:43:52,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480468372] [2020-10-28 08:43:52,707 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-28 08:43:52,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:43:52,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-28 08:43:52,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=592, Unknown=2, NotChecked=0, Total=650 [2020-10-28 08:43:52,709 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 26 states. [2020-10-28 08:43:54,692 WARN L193 SmtUtils]: Spent 460.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 92 [2020-10-28 08:43:55,690 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 58 [2020-10-28 08:44:03,332 WARN L193 SmtUtils]: Spent 7.37 s on a formula simplification. DAG size of input: 93 DAG size of output: 78 [2020-10-28 08:44:04,139 WARN L193 SmtUtils]: Spent 491.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 79 [2020-10-28 08:44:04,445 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2020-10-28 08:44:10,143 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2020-10-28 08:44:25,804 WARN L193 SmtUtils]: Spent 15.12 s on a formula simplification. DAG size of input: 97 DAG size of output: 80 [2020-10-28 08:44:37,060 WARN L193 SmtUtils]: Spent 10.93 s on a formula simplification. DAG size of input: 90 DAG size of output: 72 [2020-10-28 08:44:37,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:44:37,584 INFO L93 Difference]: Finished difference Result 75 states and 94 transitions. [2020-10-28 08:44:37,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-28 08:44:37,585 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 53 [2020-10-28 08:44:37,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:44:37,589 INFO L225 Difference]: With dead ends: 75 [2020-10-28 08:44:37,589 INFO L226 Difference]: Without dead ends: 69 [2020-10-28 08:44:37,590 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 45.4s TimeCoverageRelationStatistics Valid=191, Invalid=1699, Unknown=2, NotChecked=0, Total=1892 [2020-10-28 08:44:37,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-28 08:44:37,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 52. [2020-10-28 08:44:37,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-28 08:44:37,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 66 transitions. [2020-10-28 08:44:37,609 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 66 transitions. Word has length 53 [2020-10-28 08:44:37,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:44:37,609 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 66 transitions. [2020-10-28 08:44:37,609 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-28 08:44:37,610 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 66 transitions. [2020-10-28 08:44:37,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-28 08:44:37,611 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:44:37,611 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:44:37,612 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 08:44:37,612 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:44:37,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:44:37,612 INFO L82 PathProgramCache]: Analyzing trace with hash -1675256346, now seen corresponding path program 4 times [2020-10-28 08:44:37,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:44:37,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2043720871] [2020-10-28 08:44:37,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:44:37,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:44:37,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:44:37,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:44:37,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:44:38,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:44:42,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:44:42,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-28 08:44:42,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:44:42,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 08:44:42,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:44:42,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:44:42,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 08:44:42,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 08:44:42,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-28 08:44:42,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:44:42,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:44:42,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:44:42,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:44:42,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:44:42,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:44:42,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:44:42,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 08:44:42,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:44:42,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:44:42,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:44:42,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:44:42,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:44:42,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:44:42,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 08:44:42,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:44:42,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:44:42,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:44:42,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 08:44:42,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:44:42,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 08:44:42,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:44:42,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:44:42,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 08:44:42,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:44:42,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 08:44:42,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:44:42,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 08:44:42,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:44:42,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:44:42,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:44:42,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:44:42,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 08:44:42,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:44:42,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 08:44:42,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:44:42,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:44:42,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:44:42,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:44:42,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 08:44:42,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:44:42,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 08:44:42,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:44:42,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:44:42,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:44:42,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 08:44:42,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:44:42,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 08:44:42,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:44:42,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:44:42,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 08:44:42,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:44:42,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 08:44:42,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:44:42,895 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 20 proven. 51 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-28 08:44:42,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2043720871] [2020-10-28 08:44:42,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:44:42,897 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 08:44:42,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485344542] [2020-10-28 08:44:42,902 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 08:44:42,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:44:42,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 08:44:42,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-28 08:44:42,905 INFO L87 Difference]: Start difference. First operand 52 states and 66 transitions. Second operand 11 states. [2020-10-28 08:44:43,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:44:43,609 INFO L93 Difference]: Finished difference Result 105 states and 127 transitions. [2020-10-28 08:44:43,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 08:44:43,610 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 55 [2020-10-28 08:44:43,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:44:43,612 INFO L225 Difference]: With dead ends: 105 [2020-10-28 08:44:43,612 INFO L226 Difference]: Without dead ends: 77 [2020-10-28 08:44:43,618 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2020-10-28 08:44:43,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-28 08:44:43,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 69. [2020-10-28 08:44:43,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-28 08:44:43,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 81 transitions. [2020-10-28 08:44:43,650 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 81 transitions. Word has length 55 [2020-10-28 08:44:43,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:44:43,651 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 81 transitions. [2020-10-28 08:44:43,651 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 08:44:43,651 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 81 transitions. [2020-10-28 08:44:43,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-28 08:44:43,655 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:44:43,656 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:44:43,656 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 08:44:43,656 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:44:43,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:44:43,657 INFO L82 PathProgramCache]: Analyzing trace with hash 776888998, now seen corresponding path program 5 times [2020-10-28 08:44:43,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:44:43,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [616951320] [2020-10-28 08:44:43,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:44:43,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:44:43,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:44:43,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:44:43,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:44:44,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:44:48,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:44:48,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-28 08:44:48,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:44:48,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 08:44:48,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:44:48,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:44:48,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 08:44:48,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 08:44:48,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 08:44:48,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:44:48,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:44:48,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:44:48,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:44:48,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:44:48,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:44:48,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:44:48,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 08:44:48,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:44:48,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:44:48,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:44:48,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:44:48,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:44:48,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:44:48,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 08:44:48,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:44:48,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:44:48,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:44:48,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:44:48,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 08:44:48,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:44:48,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 08:44:48,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:44:48,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:44:48,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:44:48,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:44:48,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 08:44:48,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:44:48,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 08:44:48,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:44:48,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:44:48,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:44:48,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:44:48,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 08:44:48,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:44:48,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 08:44:48,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:44:48,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:44:48,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:44:48,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:44:48,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 08:44:48,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:44:48,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 08:44:48,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:44:48,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:44:48,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:44:48,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 08:44:48,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:44:48,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 08:44:48,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:44:48,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:44:48,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:44:48,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:44:48,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:44:48,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:44:48,890 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-28 08:44:48,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [616951320] [2020-10-28 08:44:48,891 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:44:48,891 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 08:44:48,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116364898] [2020-10-28 08:44:48,892 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 08:44:48,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:44:48,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 08:44:48,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-28 08:44:48,893 INFO L87 Difference]: Start difference. First operand 69 states and 81 transitions. Second operand 9 states. [2020-10-28 08:44:49,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:44:49,208 INFO L93 Difference]: Finished difference Result 145 states and 161 transitions. [2020-10-28 08:44:49,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 08:44:49,209 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 55 [2020-10-28 08:44:49,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:44:49,211 INFO L225 Difference]: With dead ends: 145 [2020-10-28 08:44:49,211 INFO L226 Difference]: Without dead ends: 96 [2020-10-28 08:44:49,212 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-10-28 08:44:49,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-28 08:44:49,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 83. [2020-10-28 08:44:49,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-28 08:44:49,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 95 transitions. [2020-10-28 08:44:49,230 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 95 transitions. Word has length 55 [2020-10-28 08:44:49,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:44:49,231 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 95 transitions. [2020-10-28 08:44:49,231 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 08:44:49,231 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 95 transitions. [2020-10-28 08:44:49,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-28 08:44:49,232 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:44:49,233 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:44:49,233 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 08:44:49,233 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:44:49,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:44:49,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1919132042, now seen corresponding path program 6 times [2020-10-28 08:44:49,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:44:49,234 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1115344883] [2020-10-28 08:44:49,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:44:49,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:44:49,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:44:49,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:44:49,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:44:49,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:44:54,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:44:54,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-28 08:44:54,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:44:54,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-28 08:44:54,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:44:54,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:44:54,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 08:44:54,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 08:44:54,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-28 08:44:54,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:44:54,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:44:54,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:44:54,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:44:54,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:44:54,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:44:54,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:44:54,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 08:44:54,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:44:54,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:44:54,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:44:54,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:44:54,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:44:54,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:44:54,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-28 08:44:54,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:44:54,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:44:54,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:44:54,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:44:54,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 08:44:54,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:44:54,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 08:44:54,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:44:54,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:44:54,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:44:54,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:44:54,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 08:44:54,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:44:54,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 08:44:54,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:44:54,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:44:54,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:44:54,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:44:54,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 08:44:54,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:44:54,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-28 08:44:54,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:44:54,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:44:54,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:44:54,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:44:54,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 08:44:54,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:44:54,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 08:44:54,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:44:54,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:44:54,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:44:54,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 08:44:54,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:44:54,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 08:44:54,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:44:54,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:44:54,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 08:44:54,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:44:54,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 08:44:54,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:44:54,547 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 36 proven. 9 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-28 08:44:54,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1115344883] [2020-10-28 08:44:54,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:44:54,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 08:44:54,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728621571] [2020-10-28 08:44:54,549 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 08:44:54,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:44:54,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 08:44:54,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-28 08:44:54,550 INFO L87 Difference]: Start difference. First operand 83 states and 95 transitions. Second operand 11 states. [2020-10-28 08:44:55,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:44:55,083 INFO L93 Difference]: Finished difference Result 97 states and 107 transitions. [2020-10-28 08:44:55,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 08:44:55,083 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 55 [2020-10-28 08:44:55,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:44:55,085 INFO L225 Difference]: With dead ends: 97 [2020-10-28 08:44:55,085 INFO L226 Difference]: Without dead ends: 74 [2020-10-28 08:44:55,086 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2020-10-28 08:44:55,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-28 08:44:55,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 60. [2020-10-28 08:44:55,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-28 08:44:55,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 68 transitions. [2020-10-28 08:44:55,113 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 68 transitions. Word has length 55 [2020-10-28 08:44:55,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:44:55,116 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 68 transitions. [2020-10-28 08:44:55,116 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 08:44:55,116 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 68 transitions. [2020-10-28 08:44:55,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-28 08:44:55,117 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:44:55,118 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:44:55,118 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 08:44:55,118 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:44:55,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:44:55,119 INFO L82 PathProgramCache]: Analyzing trace with hash 937921254, now seen corresponding path program 7 times [2020-10-28 08:44:55,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:44:55,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [319235763] [2020-10-28 08:44:55,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:44:55,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:44:55,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:44:55,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:44:55,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:44:55,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:44:55,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:44:57,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:45:00,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:45:00,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 08:45:00,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 08:45:00,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 08:45:00,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:45:00,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:45:00,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 08:45:00,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 08:45:00,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-28 08:45:00,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:45:00,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:45:00,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:45:00,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:45:00,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:45:00,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:45:00,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:45:00,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:45:00,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:45:00,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:45:00,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:45:00,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:45:00,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:45:00,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:45:00,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 08:45:00,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:45:00,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:45:00,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:45:00,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:45:00,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 08:45:00,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:45:00,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 08:45:00,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:45:00,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:45:00,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:45:00,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:45:00,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 08:45:00,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:45:00,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 08:45:00,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:45:00,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:45:00,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:45:00,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:45:00,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 08:45:00,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:45:00,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 08:45:00,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:45:00,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:45:00,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:45:00,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:45:00,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 08:45:00,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:45:00,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 08:45:00,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:45:00,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:45:00,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:45:00,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 08:45:00,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:45:00,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 08:45:00,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:45:00,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:45:00,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 08:45:00,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:45:00,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 08:45:00,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:45:00,384 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 60 proven. 9 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-10-28 08:45:00,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [319235763] [2020-10-28 08:45:00,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:45:00,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 08:45:00,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759942634] [2020-10-28 08:45:00,385 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 08:45:00,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:45:00,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 08:45:00,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-28 08:45:00,386 INFO L87 Difference]: Start difference. First operand 60 states and 68 transitions. Second operand 11 states. [2020-10-28 08:45:00,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:45:00,973 INFO L93 Difference]: Finished difference Result 79 states and 86 transitions. [2020-10-28 08:45:00,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 08:45:00,974 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 59 [2020-10-28 08:45:00,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:45:00,975 INFO L225 Difference]: With dead ends: 79 [2020-10-28 08:45:00,975 INFO L226 Difference]: Without dead ends: 47 [2020-10-28 08:45:00,976 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2020-10-28 08:45:00,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-28 08:45:00,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 40. [2020-10-28 08:45:00,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-28 08:45:00,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2020-10-28 08:45:00,984 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 59 [2020-10-28 08:45:00,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:45:00,985 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2020-10-28 08:45:00,985 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 08:45:00,985 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2020-10-28 08:45:00,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-28 08:45:00,985 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:45:00,986 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:45:00,986 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 08:45:00,986 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:45:00,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:45:00,986 INFO L82 PathProgramCache]: Analyzing trace with hash -273671320, now seen corresponding path program 8 times [2020-10-28 08:45:00,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:45:00,987 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1364411950] [2020-10-28 08:45:00,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:45:01,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:45:01,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:45:01,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:45:01,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:45:01,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:45:06,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:45:06,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 08:45:06,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:45:06,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 08:45:06,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:45:06,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:45:06,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 08:45:06,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 08:45:06,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-28 08:45:06,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:45:06,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:45:06,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:45:06,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:45:06,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:45:06,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:45:06,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:45:06,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:45:06,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:45:06,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:45:06,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:45:06,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:45:06,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:45:06,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:45:06,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-28 08:45:06,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:45:06,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:45:06,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:45:06,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:45:06,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 08:45:06,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:45:06,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 08:45:06,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:45:06,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:45:06,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:45:06,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:45:06,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 08:45:06,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:45:06,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 08:45:06,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:45:06,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:45:06,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:45:06,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:45:06,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 08:45:06,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:45:06,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 08:45:06,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:45:06,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:45:06,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:45:06,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:45:06,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 08:45:06,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:45:06,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-28 08:45:06,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:45:06,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:45:06,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:45:06,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 08:45:06,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:45:06,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 08:45:06,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:45:06,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:45:06,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:45:06,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 08:45:06,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:45:06,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:45:06,192 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2020-10-28 08:45:06,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1364411950] [2020-10-28 08:45:06,193 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:45:06,193 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 08:45:06,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490465960] [2020-10-28 08:45:06,194 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 08:45:06,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:45:06,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 08:45:06,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-28 08:45:06,195 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 9 states. [2020-10-28 08:45:06,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:45:06,409 INFO L93 Difference]: Finished difference Result 61 states and 66 transitions. [2020-10-28 08:45:06,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 08:45:06,410 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2020-10-28 08:45:06,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:45:06,412 INFO L225 Difference]: With dead ends: 61 [2020-10-28 08:45:06,412 INFO L226 Difference]: Without dead ends: 42 [2020-10-28 08:45:06,413 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-10-28 08:45:06,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-28 08:45:06,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-10-28 08:45:06,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-28 08:45:06,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2020-10-28 08:45:06,421 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 61 [2020-10-28 08:45:06,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:45:06,421 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2020-10-28 08:45:06,421 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 08:45:06,422 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2020-10-28 08:45:06,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-28 08:45:06,422 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:45:06,423 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:45:06,423 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 08:45:06,423 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:45:06,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:45:06,424 INFO L82 PathProgramCache]: Analyzing trace with hash -469127546, now seen corresponding path program 9 times [2020-10-28 08:45:06,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:45:06,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1468043826] [2020-10-28 08:45:06,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:45:06,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:45:06,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:45:07,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:45:08,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:45:10,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:45:11,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:45:11,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 08:45:11,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:45:11,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 08:45:11,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:45:11,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:45:11,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 40 [2020-10-28 08:45:11,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 08:45:11,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-28 08:45:11,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:45:12,179 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 60 [2020-10-28 08:45:12,579 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 48 [2020-10-28 08:45:12,879 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 62 [2020-10-28 08:45:13,212 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 57 [2020-10-28 08:45:13,652 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 56 [2020-10-28 08:45:14,028 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 55 [2020-10-28 08:45:14,308 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 53 [2020-10-28 08:45:14,569 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 46 [2020-10-28 08:45:16,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:45:16,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:45:16,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:45:16,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:45:16,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:45:16,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:45:16,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 08:45:16,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:45:16,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:45:16,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:45:16,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:45:16,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:45:16,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:45:16,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-28 08:45:16,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:45:16,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:45:17,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:45:17,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 08:45:17,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:45:17,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 254 [2020-10-28 08:45:17,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:45:17,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:45:17,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 08:45:17,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:45:17,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 08:45:17,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:45:17,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 08:45:17,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:45:17,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:45:17,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:45:18,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:45:18,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:45:18,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 08:45:18,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 08:45:18,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 824 [2020-10-28 08:45:18,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:45:18,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:45:18,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 08:45:18,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:45:18,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 08:45:18,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:45:19,867 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 36 [2020-10-28 08:45:19,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 08:45:19,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:45:19,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:45:20,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:45:20,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 08:45:20,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:45:20,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-28 08:45:20,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:45:20,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:45:20,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 08:45:20,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:45:20,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 08:45:20,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:45:20,766 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 52 [2020-10-28 08:45:20,815 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 4 proven. 113 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-28 08:45:20,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1468043826] [2020-10-28 08:45:20,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:45:20,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-28 08:45:20,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838562019] [2020-10-28 08:45:20,816 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-28 08:45:20,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:45:20,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-28 08:45:20,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=1044, Unknown=1, NotChecked=0, Total=1122 [2020-10-28 08:45:20,818 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand 34 states. [2020-10-28 08:45:22,646 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2020-10-28 08:45:23,233 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 93 [2020-10-28 08:45:23,957 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2020-10-28 08:45:24,610 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 52 [2020-10-28 08:45:25,234 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 60 [2020-10-28 08:45:27,671 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 56 [2020-10-28 08:45:30,269 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 59 [2020-10-28 08:45:35,089 WARN L193 SmtUtils]: Spent 2.18 s on a formula simplification. DAG size of input: 105 DAG size of output: 56 [2020-10-28 08:45:35,709 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 62 [2020-10-28 08:45:36,108 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 58 [2020-10-28 08:45:36,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:45:36,434 INFO L93 Difference]: Finished difference Result 85 states and 104 transitions. [2020-10-28 08:45:36,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-28 08:45:36,435 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 63 [2020-10-28 08:45:36,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:45:36,436 INFO L225 Difference]: With dead ends: 85 [2020-10-28 08:45:36,437 INFO L226 Difference]: Without dead ends: 79 [2020-10-28 08:45:36,439 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 18.2s TimeCoverageRelationStatistics Valid=242, Invalid=2835, Unknown=3, NotChecked=0, Total=3080 [2020-10-28 08:45:36,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-28 08:45:36,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 60. [2020-10-28 08:45:36,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-28 08:45:36,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 74 transitions. [2020-10-28 08:45:36,463 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 74 transitions. Word has length 63 [2020-10-28 08:45:36,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:45:36,464 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 74 transitions. [2020-10-28 08:45:36,464 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-28 08:45:36,464 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 74 transitions. [2020-10-28 08:45:36,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-28 08:45:36,465 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:45:36,465 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:45:36,465 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 08:45:36,465 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:45:36,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:45:36,466 INFO L82 PathProgramCache]: Analyzing trace with hash -355463580, now seen corresponding path program 10 times [2020-10-28 08:45:36,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:45:36,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [626094764] [2020-10-28 08:45:36,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:45:36,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:45:36,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:45:36,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:45:36,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:45:37,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:45:41,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:45:41,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-28 08:45:41,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:45:41,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 08:45:41,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:45:41,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:45:41,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 08:45:41,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 08:45:41,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-28 08:45:41,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:45:41,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:45:41,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:45:41,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:45:41,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:45:41,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:45:41,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:45:41,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:45:41,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:45:41,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:45:41,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:45:41,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:45:41,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:45:41,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:45:41,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-28 08:45:41,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:45:41,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:45:41,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:45:41,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 08:45:41,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:45:41,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 08:45:41,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:45:41,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:45:41,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 08:45:41,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:45:41,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 08:45:41,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:45:41,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 08:45:41,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:45:41,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:45:41,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:45:41,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:45:41,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 08:45:41,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:45:41,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 08:45:41,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:45:41,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:45:41,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:45:41,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:45:41,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 08:45:41,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:45:41,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-28 08:45:41,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:45:41,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:45:41,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:45:41,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 08:45:41,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:45:41,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 08:45:41,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:45:41,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:45:41,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 08:45:41,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:45:41,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 08:45:41,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:45:41,731 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 37 proven. 86 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-28 08:45:41,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [626094764] [2020-10-28 08:45:41,732 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:45:41,732 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 08:45:41,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601072336] [2020-10-28 08:45:41,732 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 08:45:41,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:45:41,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 08:45:41,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-10-28 08:45:41,733 INFO L87 Difference]: Start difference. First operand 60 states and 74 transitions. Second operand 13 states. [2020-10-28 08:45:42,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:45:42,673 INFO L93 Difference]: Finished difference Result 123 states and 145 transitions. [2020-10-28 08:45:42,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 08:45:42,674 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 65 [2020-10-28 08:45:42,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:45:42,676 INFO L225 Difference]: With dead ends: 123 [2020-10-28 08:45:42,676 INFO L226 Difference]: Without dead ends: 91 [2020-10-28 08:45:42,677 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=173, Invalid=583, Unknown=0, NotChecked=0, Total=756 [2020-10-28 08:45:42,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-28 08:45:42,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 81. [2020-10-28 08:45:42,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-28 08:45:42,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 93 transitions. [2020-10-28 08:45:42,692 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 93 transitions. Word has length 65 [2020-10-28 08:45:42,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:45:42,692 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 93 transitions. [2020-10-28 08:45:42,692 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 08:45:42,692 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 93 transitions. [2020-10-28 08:45:42,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-28 08:45:42,693 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:45:42,694 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 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] [2020-10-28 08:45:42,694 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 08:45:42,694 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:45:42,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:45:42,695 INFO L82 PathProgramCache]: Analyzing trace with hash 676000292, now seen corresponding path program 11 times [2020-10-28 08:45:42,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:45:42,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [271756060] [2020-10-28 08:45:42,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:45:42,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:45:42,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:45:42,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:45:42,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:45:43,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:45:47,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:45:47,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-28 08:45:47,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:45:47,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-28 08:45:47,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:45:47,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:45:47,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 08:45:47,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 08:45:47,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-28 08:45:47,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:45:47,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:45:47,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:45:47,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:45:47,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:45:47,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:45:47,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:45:47,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:45:47,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:45:47,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:45:47,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:45:47,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:45:47,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:45:47,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:45:47,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-28 08:45:47,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:45:47,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:45:47,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:45:47,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:45:47,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 08:45:47,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:45:47,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-28 08:45:47,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:45:47,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:45:47,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:45:47,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:45:47,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 08:45:47,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:45:47,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 08:45:47,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:45:47,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:45:47,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:45:47,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:45:47,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 08:45:47,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:45:47,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-28 08:45:47,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:45:47,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:45:47,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:45:47,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:45:47,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 08:45:47,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:45:47,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-28 08:45:47,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:45:47,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:45:48,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:45:48,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 08:45:48,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:45:48,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 08:45:48,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:45:48,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:45:48,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:45:48,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 08:45:48,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:45:48,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:45:48,015 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2020-10-28 08:45:48,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [271756060] [2020-10-28 08:45:48,019 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:45:48,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 08:45:48,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196792237] [2020-10-28 08:45:48,021 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 08:45:48,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:45:48,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 08:45:48,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-10-28 08:45:48,022 INFO L87 Difference]: Start difference. First operand 81 states and 93 transitions. Second operand 11 states. [2020-10-28 08:45:48,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:45:48,524 INFO L93 Difference]: Finished difference Result 171 states and 187 transitions. [2020-10-28 08:45:48,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 08:45:48,525 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 65 [2020-10-28 08:45:48,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:45:48,526 INFO L225 Difference]: With dead ends: 171 [2020-10-28 08:45:48,526 INFO L226 Difference]: Without dead ends: 114 [2020-10-28 08:45:48,531 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2020-10-28 08:45:48,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-28 08:45:48,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 99. [2020-10-28 08:45:48,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-28 08:45:48,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 111 transitions. [2020-10-28 08:45:48,562 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 111 transitions. Word has length 65 [2020-10-28 08:45:48,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:45:48,563 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 111 transitions. [2020-10-28 08:45:48,563 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 08:45:48,563 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 111 transitions. [2020-10-28 08:45:48,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-28 08:45:48,565 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:45:48,565 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:45:48,565 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 08:45:48,565 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:45:48,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:45:48,566 INFO L82 PathProgramCache]: Analyzing trace with hash 1815227912, now seen corresponding path program 12 times [2020-10-28 08:45:48,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:45:48,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [990903602] [2020-10-28 08:45:48,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:45:48,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:45:48,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:45:48,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:45:48,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:45:49,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:45:53,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:45:53,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-28 08:45:53,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:45:53,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 08:45:53,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:45:53,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:45:53,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 08:45:53,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 08:45:53,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-28 08:45:53,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:45:53,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:45:53,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:45:53,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:45:53,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:45:53,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:45:53,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:45:53,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 08:45:53,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:45:53,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:45:53,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:45:53,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:45:53,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:45:53,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:45:53,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-28 08:45:53,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:45:53,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:45:53,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:45:53,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:45:53,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 08:45:53,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:45:53,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 08:45:53,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:45:53,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:45:53,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:45:53,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:45:53,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 08:45:53,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:45:53,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 08:45:53,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:45:53,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:45:53,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:45:53,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:45:53,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 08:45:53,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:45:53,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 08:45:53,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:45:53,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:45:53,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:45:53,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:45:53,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 08:45:53,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:45:53,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-28 08:45:53,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:45:53,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:45:53,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:45:53,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 08:45:53,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:45:53,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 08:45:53,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:45:53,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:45:53,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 08:45:53,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:45:53,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 08:45:53,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:45:53,897 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 65 proven. 16 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2020-10-28 08:45:53,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [990903602] [2020-10-28 08:45:53,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:45:53,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 08:45:53,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968906789] [2020-10-28 08:45:53,899 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 08:45:53,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:45:53,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 08:45:53,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-10-28 08:45:53,900 INFO L87 Difference]: Start difference. First operand 99 states and 111 transitions. Second operand 13 states. [2020-10-28 08:45:54,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:45:54,561 INFO L93 Difference]: Finished difference Result 113 states and 123 transitions. [2020-10-28 08:45:54,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 08:45:54,562 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 65 [2020-10-28 08:45:54,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:45:54,564 INFO L225 Difference]: With dead ends: 113 [2020-10-28 08:45:54,564 INFO L226 Difference]: Without dead ends: 86 [2020-10-28 08:45:54,565 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=124, Invalid=428, Unknown=0, NotChecked=0, Total=552 [2020-10-28 08:45:54,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-28 08:45:54,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 70. [2020-10-28 08:45:54,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-28 08:45:54,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions. [2020-10-28 08:45:54,576 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 78 transitions. Word has length 65 [2020-10-28 08:45:54,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:45:54,577 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 78 transitions. [2020-10-28 08:45:54,577 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 08:45:54,577 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 78 transitions. [2020-10-28 08:45:54,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-28 08:45:54,578 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:45:54,578 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:45:54,578 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 08:45:54,578 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:45:54,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:45:54,579 INFO L82 PathProgramCache]: Analyzing trace with hash 517692004, now seen corresponding path program 13 times [2020-10-28 08:45:54,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:45:54,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [359622189] [2020-10-28 08:45:54,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:45:54,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:45:54,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:45:54,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:45:54,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:45:55,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:45:55,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:45:56,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:45:59,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:45:59,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-28 08:45:59,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 08:45:59,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-28 08:45:59,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:45:59,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:45:59,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 08:45:59,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 08:45:59,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-28 08:45:59,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:45:59,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:45:59,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:45:59,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:45:59,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:45:59,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:45:59,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:45:59,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 08:45:59,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:45:59,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:45:59,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:45:59,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:45:59,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:45:59,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:45:59,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-28 08:45:59,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:45:59,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:45:59,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:45:59,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:45:59,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 08:45:59,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:45:59,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-28 08:45:59,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:45:59,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:45:59,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:45:59,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:45:59,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 08:45:59,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:45:59,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 08:45:59,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:45:59,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:45:59,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:45:59,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:45:59,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 08:45:59,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:45:59,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-28 08:45:59,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:45:59,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:45:59,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:45:59,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:45:59,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 08:45:59,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:45:59,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-28 08:45:59,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:45:59,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:45:59,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:45:59,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 08:45:59,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:45:59,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 08:45:59,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:45:59,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:45:59,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 08:45:59,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:45:59,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 08:45:59,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:46:00,018 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 97 proven. 16 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-28 08:46:00,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [359622189] [2020-10-28 08:46:00,019 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:46:00,019 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 08:46:00,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303600946] [2020-10-28 08:46:00,020 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 08:46:00,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:46:00,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 08:46:00,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-10-28 08:46:00,022 INFO L87 Difference]: Start difference. First operand 70 states and 78 transitions. Second operand 13 states. [2020-10-28 08:46:00,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:46:00,803 INFO L93 Difference]: Finished difference Result 93 states and 100 transitions. [2020-10-28 08:46:00,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-28 08:46:00,804 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 69 [2020-10-28 08:46:00,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:46:00,813 INFO L225 Difference]: With dead ends: 93 [2020-10-28 08:46:00,813 INFO L226 Difference]: Without dead ends: 55 [2020-10-28 08:46:00,814 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=167, Invalid=589, Unknown=0, NotChecked=0, Total=756 [2020-10-28 08:46:00,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-28 08:46:00,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 46. [2020-10-28 08:46:00,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-28 08:46:00,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2020-10-28 08:46:00,821 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 69 [2020-10-28 08:46:00,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:46:00,822 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2020-10-28 08:46:00,822 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 08:46:00,822 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2020-10-28 08:46:00,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-28 08:46:00,823 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:46:00,823 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:46:00,823 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 08:46:00,823 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:46:00,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:46:00,824 INFO L82 PathProgramCache]: Analyzing trace with hash -44912538, now seen corresponding path program 14 times [2020-10-28 08:46:00,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:46:00,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1768956125] [2020-10-28 08:46:00,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:46:00,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:46:00,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:46:00,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:46:00,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:46:01,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:46:05,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:46:05,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-28 08:46:05,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:46:05,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 08:46:05,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:46:05,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:46:05,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 08:46:05,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 08:46:05,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-28 08:46:05,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:46:05,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:46:05,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:46:05,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:46:05,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:46:05,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:46:05,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:46:05,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:46:05,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:46:05,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:46:05,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:46:05,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:46:05,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:46:05,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:46:05,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-28 08:46:05,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:46:05,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:46:05,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:46:06,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:46:06,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 08:46:06,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:46:06,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-28 08:46:06,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:46:06,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:46:06,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:46:06,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:46:06,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 08:46:06,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:46:06,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 08:46:06,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:46:06,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:46:06,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:46:06,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:46:06,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 08:46:06,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:46:06,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-28 08:46:06,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:46:06,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:46:06,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:46:06,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:46:06,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 08:46:06,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:46:06,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-28 08:46:06,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:46:06,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:46:06,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:46:06,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 08:46:06,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:46:06,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 08:46:06,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:46:06,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:46:06,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:46:06,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 08:46:06,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:46:06,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:46:06,111 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 9 proven. 11 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2020-10-28 08:46:06,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1768956125] [2020-10-28 08:46:06,112 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:46:06,112 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 08:46:06,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140080497] [2020-10-28 08:46:06,116 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 08:46:06,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:46:06,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 08:46:06,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-10-28 08:46:06,117 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand 11 states. [2020-10-28 08:46:06,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:46:06,425 INFO L93 Difference]: Finished difference Result 69 states and 74 transitions. [2020-10-28 08:46:06,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 08:46:06,426 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 71 [2020-10-28 08:46:06,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:46:06,426 INFO L225 Difference]: With dead ends: 69 [2020-10-28 08:46:06,427 INFO L226 Difference]: Without dead ends: 48 [2020-10-28 08:46:06,428 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2020-10-28 08:46:06,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-28 08:46:06,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-10-28 08:46:06,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-28 08:46:06,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2020-10-28 08:46:06,442 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 71 [2020-10-28 08:46:06,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:46:06,443 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2020-10-28 08:46:06,443 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 08:46:06,443 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2020-10-28 08:46:06,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-28 08:46:06,443 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:46:06,444 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 4, 4, 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] [2020-10-28 08:46:06,444 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 08:46:06,445 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:46:06,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:46:06,445 INFO L82 PathProgramCache]: Analyzing trace with hash -1468290044, now seen corresponding path program 15 times [2020-10-28 08:46:06,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:46:06,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [262088233] [2020-10-28 08:46:06,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:46:06,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:46:06,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:46:07,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:46:08,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:46:10,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:46:11,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:46:11,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 08:46:11,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:46:11,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5422 [2020-10-28 08:46:11,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:46:11,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:46:11,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 50 [2020-10-28 08:46:11,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 08:46:11,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 08:46:11,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:46:13,340 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 68 [2020-10-28 08:46:13,810 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 74 [2020-10-28 08:46:18,610 WARN L193 SmtUtils]: Spent 4.71 s on a formula simplification. DAG size of input: 115 DAG size of output: 87 [2020-10-28 08:46:21,184 WARN L193 SmtUtils]: Spent 2.47 s on a formula simplification. DAG size of input: 128 DAG size of output: 81 [2020-10-28 08:46:23,789 WARN L193 SmtUtils]: Spent 2.47 s on a formula simplification. DAG size of input: 127 DAG size of output: 80 [2020-10-28 08:46:26,353 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 78 [2020-10-28 08:46:28,862 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 76 [2020-10-28 08:46:31,508 WARN L193 SmtUtils]: Spent 451.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 85 [2020-10-28 08:46:32,131 WARN L193 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 74 [2020-10-28 08:46:32,691 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 71 [2020-10-28 08:46:37,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:46:37,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:46:37,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:46:37,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:46:37,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:46:37,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:46:37,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:46:37,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:46:37,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:46:37,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:46:37,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:46:37,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:46:37,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:46:37,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-28 08:46:37,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:46:37,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:46:37,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:46:37,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:46:38,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:46:38,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 08:46:38,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 08:46:38,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 774 [2020-10-28 08:46:38,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:46:38,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:46:38,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 08:46:38,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:46:38,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 08:46:38,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0