/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=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label35.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 00:30:04,485 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 00:30:04,489 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 00:30:04,532 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 00:30:04,533 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 00:30:04,535 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 00:30:04,536 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 00:30:04,539 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 00:30:04,541 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 00:30:04,542 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 00:30:04,551 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 00:30:04,552 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 00:30:04,553 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 00:30:04,554 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 00:30:04,555 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 00:30:04,557 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 00:30:04,558 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 00:30:04,559 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 00:30:04,561 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 00:30:04,563 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 00:30:04,565 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 00:30:04,567 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 00:30:04,569 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 00:30:04,570 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 00:30:04,574 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 00:30:04,574 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 00:30:04,575 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 00:30:04,576 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 00:30:04,577 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 00:30:04,578 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 00:30:04,578 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 00:30:04,580 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 00:30:04,581 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 00:30:04,581 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 00:30:04,583 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 00:30:04,583 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 00:30:04,584 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 00:30:04,584 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 00:30:04,585 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 00:30:04,587 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 00:30:04,588 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 00:30:04,591 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 [2020-10-27 00:30:04,645 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 00:30:04,646 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 00:30:04,648 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 00:30:04,648 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 00:30:04,649 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 00:30:04,651 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 00:30:04,651 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 00:30:04,651 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 00:30:04,651 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 00:30:04,651 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 00:30:04,653 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 00:30:04,653 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 00:30:04,653 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 00:30:04,654 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 00:30:04,654 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 00:30:04,654 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 00:30:04,654 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 00:30:04,655 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 00:30:04,655 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 00:30:04,655 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 00:30:04,655 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 00:30:04,656 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 00:30:04,656 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 00:30:04,657 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 00:30:04,657 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 00:30:04,657 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 00:30:04,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 00:30:04,658 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 00:30:04,658 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 00:30:04,658 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 00:30:05,054 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 00:30:05,087 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 00:30:05,092 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 00:30:05,093 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 00:30:05,094 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 00:30:05,096 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label35.c [2020-10-27 00:30:05,195 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/978d4694c/2d95aceee7874d17a17b519ef6547fe2/FLAG470ba8941 [2020-10-27 00:30:06,183 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 00:30:06,184 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label35.c [2020-10-27 00:30:06,214 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/978d4694c/2d95aceee7874d17a17b519ef6547fe2/FLAG470ba8941 [2020-10-27 00:30:06,726 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/978d4694c/2d95aceee7874d17a17b519ef6547fe2 [2020-10-27 00:30:06,729 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 00:30:06,736 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 00:30:06,738 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 00:30:06,738 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 00:30:06,742 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 00:30:06,743 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:30:06" (1/1) ... [2020-10-27 00:30:06,747 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16285390 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:30:06, skipping insertion in model container [2020-10-27 00:30:06,748 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:30:06" (1/1) ... [2020-10-27 00:30:06,756 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 00:30:06,858 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 00:30:08,096 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 00:30:08,110 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 00:30:08,733 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 00:30:08,767 INFO L208 MainTranslator]: Completed translation [2020-10-27 00:30:08,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:30:08 WrapperNode [2020-10-27 00:30:08,769 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 00:30:08,770 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 00:30:08,770 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 00:30:08,771 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 00:30:08,785 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:30:08" (1/1) ... [2020-10-27 00:30:08,787 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:30:08" (1/1) ... [2020-10-27 00:30:08,902 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:30:08" (1/1) ... [2020-10-27 00:30:08,902 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:30:08" (1/1) ... [2020-10-27 00:30:09,007 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:30:08" (1/1) ... [2020-10-27 00:30:09,033 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:30:08" (1/1) ... [2020-10-27 00:30:09,064 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:30:08" (1/1) ... [2020-10-27 00:30:09,094 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 00:30:09,095 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 00:30:09,096 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 00:30:09,096 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 00:30:09,097 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:30:08" (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 [2020-10-27 00:30:09,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 00:30:09,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 00:30:09,185 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 00:30:09,186 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 00:30:09,186 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 00:30:09,186 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 00:30:09,186 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 00:30:09,186 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 00:30:09,186 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 00:30:09,187 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 00:30:09,187 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 00:30:09,187 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 00:30:09,187 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 00:30:09,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 00:30:09,187 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 00:30:09,188 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 00:30:09,188 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 00:30:09,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 00:30:09,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 00:30:09,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 00:30:09,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 00:30:09,189 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 00:30:09,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 00:30:13,192 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 00:30:13,192 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 00:30:13,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:30:13 BoogieIcfgContainer [2020-10-27 00:30:13,198 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 00:30:13,200 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 00:30:13,200 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 00:30:13,204 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 00:30:13,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 12:30:06" (1/3) ... [2020-10-27 00:30:13,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34f62d0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:30:13, skipping insertion in model container [2020-10-27 00:30:13,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:30:08" (2/3) ... [2020-10-27 00:30:13,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34f62d0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:30:13, skipping insertion in model container [2020-10-27 00:30:13,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:30:13" (3/3) ... [2020-10-27 00:30:13,208 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem18_label35.c [2020-10-27 00:30:13,221 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 00:30:13,227 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 00:30:13,242 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 00:30:13,278 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 00:30:13,279 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 00:30:13,279 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 00:30:13,279 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 00:30:13,279 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 00:30:13,279 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 00:30:13,279 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 00:30:13,279 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 00:30:13,316 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states. [2020-10-27 00:30:13,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-27 00:30:13,323 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:30:13,324 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:30:13,324 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:30:13,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:30:13,331 INFO L82 PathProgramCache]: Analyzing trace with hash -1510701488, now seen corresponding path program 1 times [2020-10-27 00:30:13,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:30:13,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1050527587] [2020-10-27 00:30:13,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:30:13,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:13,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:14,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:14,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-27 00:30:14,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:14,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 469 [2020-10-27 00:30:14,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:14,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:30:14,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:30:14,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 00:30:14,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 00:30:14,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:30:14,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:14,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:14,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:14,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:30:14,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:14,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 00:30:14,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:14,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:30:14,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:30:14,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:30:14,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:30:14,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:30:14,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1050527587] [2020-10-27 00:30:14,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:30:14,213 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 00:30:14,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858094990] [2020-10-27 00:30:14,224 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 00:30:14,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:30:14,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 00:30:14,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 00:30:14,251 INFO L87 Difference]: Start difference. First operand 778 states. Second operand 4 states. [2020-10-27 00:30:23,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:30:23,406 INFO L93 Difference]: Finished difference Result 2275 states and 4355 transitions. [2020-10-27 00:30:23,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 00:30:23,410 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-10-27 00:30:23,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:30:23,449 INFO L225 Difference]: With dead ends: 2275 [2020-10-27 00:30:23,449 INFO L226 Difference]: Without dead ends: 1433 [2020-10-27 00:30:23,464 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 00:30:23,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1433 states. [2020-10-27 00:30:23,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1433 to 1426. [2020-10-27 00:30:23,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1426 states. [2020-10-27 00:30:23,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 2230 transitions. [2020-10-27 00:30:23,646 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 2230 transitions. Word has length 21 [2020-10-27 00:30:23,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:30:23,647 INFO L481 AbstractCegarLoop]: Abstraction has 1426 states and 2230 transitions. [2020-10-27 00:30:23,647 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 00:30:23,647 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 2230 transitions. [2020-10-27 00:30:23,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-27 00:30:23,654 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:30:23,655 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:30:23,655 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 00:30:23,655 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:30:23,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:30:23,656 INFO L82 PathProgramCache]: Analyzing trace with hash -741319159, now seen corresponding path program 1 times [2020-10-27 00:30:23,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:30:23,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [88473305] [2020-10-27 00:30:23,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:30:23,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:23,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:24,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:24,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:24,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-27 00:30:24,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:30:24,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 876 [2020-10-27 00:30:24,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:24,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:30:24,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:30:24,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-27 00:30:24,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:30:24,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:30:24,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:24,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:24,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:24,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:30:24,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:24,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 00:30:24,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:24,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:30:24,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:30:24,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:30:24,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:24,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:30:24,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:24,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:24,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:24,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 00:30:24,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:24,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-27 00:30:24,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:24,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:30:24,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:30:24,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 00:30:24,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:30:24,971 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:30:24,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [88473305] [2020-10-27 00:30:24,972 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:30:24,972 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 00:30:24,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238554779] [2020-10-27 00:30:24,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:30:24,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:30:24,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:30:24,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:30:24,980 INFO L87 Difference]: Start difference. First operand 1426 states and 2230 transitions. Second operand 7 states. [2020-10-27 00:30:36,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:30:36,142 INFO L93 Difference]: Finished difference Result 4328 states and 6805 transitions. [2020-10-27 00:30:36,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:30:36,142 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 91 [2020-10-27 00:30:36,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:30:36,161 INFO L225 Difference]: With dead ends: 4328 [2020-10-27 00:30:36,161 INFO L226 Difference]: Without dead ends: 2908 [2020-10-27 00:30:36,166 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:30:36,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2908 states. [2020-10-27 00:30:36,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2908 to 2873. [2020-10-27 00:30:36,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2873 states. [2020-10-27 00:30:36,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2873 states to 2873 states and 3870 transitions. [2020-10-27 00:30:36,256 INFO L78 Accepts]: Start accepts. Automaton has 2873 states and 3870 transitions. Word has length 91 [2020-10-27 00:30:36,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:30:36,257 INFO L481 AbstractCegarLoop]: Abstraction has 2873 states and 3870 transitions. [2020-10-27 00:30:36,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:30:36,257 INFO L276 IsEmpty]: Start isEmpty. Operand 2873 states and 3870 transitions. [2020-10-27 00:30:36,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-27 00:30:36,260 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:30:36,260 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:30:36,260 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 00:30:36,261 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:30:36,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:30:36,261 INFO L82 PathProgramCache]: Analyzing trace with hash -1467700431, now seen corresponding path program 1 times [2020-10-27 00:30:36,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:30:36,262 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1227701823] [2020-10-27 00:30:36,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:30:36,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:36,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:36,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:37,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:37,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:30:37,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:30:37,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 896 [2020-10-27 00:30:37,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:37,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:30:37,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:30:37,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-27 00:30:37,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:37,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:30:37,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:37,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:37,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:37,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:30:37,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:37,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 00:30:37,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:37,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:30:37,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:30:37,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:30:37,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:37,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:30:37,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:37,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:37,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:37,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-27 00:30:37,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:37,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-27 00:30:37,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:37,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:30:37,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:30:37,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-27 00:30:37,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:37,718 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:30:37,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1227701823] [2020-10-27 00:30:37,719 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:30:37,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 00:30:37,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138908419] [2020-10-27 00:30:37,720 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:30:37,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:30:37,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:30:37,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:30:37,722 INFO L87 Difference]: Start difference. First operand 2873 states and 3870 transitions. Second operand 7 states. [2020-10-27 00:30:49,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:30:49,863 INFO L93 Difference]: Finished difference Result 8776 states and 11978 transitions. [2020-10-27 00:30:49,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:30:49,864 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 111 [2020-10-27 00:30:49,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:30:49,901 INFO L225 Difference]: With dead ends: 8776 [2020-10-27 00:30:49,901 INFO L226 Difference]: Without dead ends: 5909 [2020-10-27 00:30:49,910 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:30:49,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5909 states. [2020-10-27 00:30:50,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5909 to 5838. [2020-10-27 00:30:50,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5838 states. [2020-10-27 00:30:50,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5838 states to 5838 states and 7274 transitions. [2020-10-27 00:30:50,111 INFO L78 Accepts]: Start accepts. Automaton has 5838 states and 7274 transitions. Word has length 111 [2020-10-27 00:30:50,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:30:50,113 INFO L481 AbstractCegarLoop]: Abstraction has 5838 states and 7274 transitions. [2020-10-27 00:30:50,113 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:30:50,114 INFO L276 IsEmpty]: Start isEmpty. Operand 5838 states and 7274 transitions. [2020-10-27 00:30:50,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-10-27 00:30:50,128 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:30:50,129 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:30:50,129 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 00:30:50,131 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:30:50,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:30:50,132 INFO L82 PathProgramCache]: Analyzing trace with hash -1857973832, now seen corresponding path program 1 times [2020-10-27 00:30:50,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:30:50,134 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [470916476] [2020-10-27 00:30:50,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:30:50,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:50,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:50,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:51,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:53,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:53,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-10-27 00:30:53,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:30:53,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3258 [2020-10-27 00:30:53,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:53,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:30:53,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:30:53,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-27 00:30:53,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:53,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:30:53,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:53,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:53,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:53,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:30:53,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:53,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 00:30:53,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:53,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:30:53,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:30:53,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:30:53,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:53,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:30:53,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:53,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:53,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:53,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:30:53,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:53,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-27 00:30:53,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:53,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:30:53,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:30:53,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 00:30:53,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:54,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-27 00:30:54,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:54,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:54,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:54,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 00:30:54,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:54,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-27 00:30:54,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:54,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:30:54,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-27 00:30:54,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:30:54,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:54,357 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 26 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 00:30:54,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [470916476] [2020-10-27 00:30:54,358 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:30:54,358 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:30:54,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457060820] [2020-10-27 00:30:54,361 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:30:54,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:30:54,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:30:54,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:30:54,362 INFO L87 Difference]: Start difference. First operand 5838 states and 7274 transitions. Second operand 7 states. [2020-10-27 00:31:04,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:31:04,911 INFO L93 Difference]: Finished difference Result 12541 states and 15501 transitions. [2020-10-27 00:31:04,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:31:04,912 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 216 [2020-10-27 00:31:04,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:31:04,947 INFO L225 Difference]: With dead ends: 12541 [2020-10-27 00:31:04,947 INFO L226 Difference]: Without dead ends: 6709 [2020-10-27 00:31:04,961 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:31:04,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6709 states. [2020-10-27 00:31:05,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6709 to 6591. [2020-10-27 00:31:05,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6591 states. [2020-10-27 00:31:05,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6591 states to 6591 states and 8055 transitions. [2020-10-27 00:31:05,175 INFO L78 Accepts]: Start accepts. Automaton has 6591 states and 8055 transitions. Word has length 216 [2020-10-27 00:31:05,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:31:05,176 INFO L481 AbstractCegarLoop]: Abstraction has 6591 states and 8055 transitions. [2020-10-27 00:31:05,176 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:31:05,176 INFO L276 IsEmpty]: Start isEmpty. Operand 6591 states and 8055 transitions. [2020-10-27 00:31:05,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2020-10-27 00:31:05,184 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:31:05,184 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:31:05,185 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 00:31:05,185 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:31:05,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:31:05,185 INFO L82 PathProgramCache]: Analyzing trace with hash -602391433, now seen corresponding path program 1 times [2020-10-27 00:31:05,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:31:05,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [763172337] [2020-10-27 00:31:05,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:31:05,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:05,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:05,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:05,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:06,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:09,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:09,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 418 [2020-10-27 00:31:09,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:31:09,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4025 [2020-10-27 00:31:09,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:09,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:31:09,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-27 00:31:09,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 00:31:09,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:09,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:31:09,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:09,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:09,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:09,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:31:09,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:09,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 00:31:09,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:09,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:09,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:09,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:09,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:09,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:31:09,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:09,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:09,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:09,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-27 00:31:09,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:09,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-27 00:31:09,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:09,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:31:09,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:09,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-27 00:31:09,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:09,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-27 00:31:09,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:09,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:09,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:10,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:10,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:31:10,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:31:10,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 391 [2020-10-27 00:31:10,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:10,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:31:10,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:31:10,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 00:31:10,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 00:31:10,511 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2020-10-27 00:31:10,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2020-10-27 00:31:10,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:10,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:10,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:10,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 00:31:10,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:10,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 00:31:10,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:10,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:10,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-27 00:31:10,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:10,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:11,704 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 162 proven. 72 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-27 00:31:11,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [763172337] [2020-10-27 00:31:11,704 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:31:11,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:31:11,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804517703] [2020-10-27 00:31:11,706 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:31:11,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:31:11,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:31:11,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:31:11,706 INFO L87 Difference]: Start difference. First operand 6591 states and 8055 transitions. Second operand 7 states. [2020-10-27 00:31:21,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:31:21,410 INFO L93 Difference]: Finished difference Result 12865 states and 15899 transitions. [2020-10-27 00:31:21,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 00:31:21,411 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 402 [2020-10-27 00:31:21,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:31:21,441 INFO L225 Difference]: With dead ends: 12865 [2020-10-27 00:31:21,442 INFO L226 Difference]: Without dead ends: 6753 [2020-10-27 00:31:21,456 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:31:21,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6753 states. [2020-10-27 00:31:21,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6753 to 6591. [2020-10-27 00:31:21,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6591 states. [2020-10-27 00:31:21,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6591 states to 6591 states and 7388 transitions. [2020-10-27 00:31:21,639 INFO L78 Accepts]: Start accepts. Automaton has 6591 states and 7388 transitions. Word has length 402 [2020-10-27 00:31:21,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:31:21,640 INFO L481 AbstractCegarLoop]: Abstraction has 6591 states and 7388 transitions. [2020-10-27 00:31:21,640 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:31:21,640 INFO L276 IsEmpty]: Start isEmpty. Operand 6591 states and 7388 transitions. [2020-10-27 00:31:21,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2020-10-27 00:31:21,648 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:31:21,650 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:31:21,650 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 00:31:21,651 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:31:21,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:31:21,651 INFO L82 PathProgramCache]: Analyzing trace with hash 1020913088, now seen corresponding path program 1 times [2020-10-27 00:31:21,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:31:21,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [176775548] [2020-10-27 00:31:21,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:31:21,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:21,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:21,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:22,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:26,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:26,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 434 [2020-10-27 00:31:26,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:31:26,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 00:31:26,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:26,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 00:31:26,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:31:26,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 312 [2020-10-27 00:31:26,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:26,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:31:26,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:26,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:26,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:26,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:31:26,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:26,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 00:31:26,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:26,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:31:26,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:26,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:31:26,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:31:26,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:31:27,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:27,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:27,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:27,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:31:27,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:27,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 562 [2020-10-27 00:31:27,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:27,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:31:27,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:31:27,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 310 [2020-10-27 00:31:27,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:27,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:31:27,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:27,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:27,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:27,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:31:27,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:27,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-27 00:31:27,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:27,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 00:31:27,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:31:27,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 00:31:27,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:28,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-27 00:31:28,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:28,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:28,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:28,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-27 00:31:28,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:28,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-27 00:31:28,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:28,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:28,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-27 00:31:28,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:28,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:28,511 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 26 proven. 85 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 00:31:28,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [176775548] [2020-10-27 00:31:28,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:31:28,512 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 00:31:28,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738363073] [2020-10-27 00:31:28,514 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 00:31:28,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:31:28,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 00:31:28,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-27 00:31:28,515 INFO L87 Difference]: Start difference. First operand 6591 states and 7388 transitions. Second operand 9 states. [2020-10-27 00:31:39,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:31:39,278 INFO L93 Difference]: Finished difference Result 18624 states and 21440 transitions. [2020-10-27 00:31:39,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 00:31:39,279 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 418 [2020-10-27 00:31:39,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:31:39,323 INFO L225 Difference]: With dead ends: 18624 [2020-10-27 00:31:39,324 INFO L226 Difference]: Without dead ends: 12741 [2020-10-27 00:31:39,338 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2020-10-27 00:31:39,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12741 states. [2020-10-27 00:31:39,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12741 to 12564. [2020-10-27 00:31:39,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12564 states. [2020-10-27 00:31:39,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12564 states to 12564 states and 14099 transitions. [2020-10-27 00:31:39,648 INFO L78 Accepts]: Start accepts. Automaton has 12564 states and 14099 transitions. Word has length 418 [2020-10-27 00:31:39,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:31:39,649 INFO L481 AbstractCegarLoop]: Abstraction has 12564 states and 14099 transitions. [2020-10-27 00:31:39,649 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 00:31:39,649 INFO L276 IsEmpty]: Start isEmpty. Operand 12564 states and 14099 transitions. [2020-10-27 00:31:39,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 946 [2020-10-27 00:31:39,686 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:31:39,687 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:31:39,687 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 00:31:39,687 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:31:39,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:31:39,688 INFO L82 PathProgramCache]: Analyzing trace with hash 1717954975, now seen corresponding path program 1 times [2020-10-27 00:31:39,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:31:39,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1870757581] [2020-10-27 00:31:39,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:31:39,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:40,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:40,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:44,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:44,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 967 [2020-10-27 00:31:44,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:31:44,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4609 [2020-10-27 00:31:44,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:44,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:31:44,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-27 00:31:44,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-27 00:31:44,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:44,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:31:44,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:44,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:44,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:44,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:31:44,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:44,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 00:31:44,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:44,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:44,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:44,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:44,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:44,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:31:44,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:44,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:44,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:44,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:31:44,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:44,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-27 00:31:44,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:44,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:44,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:44,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:44,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:45,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:31:45,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:45,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:45,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:45,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:31:45,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:45,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-27 00:31:45,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:45,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:45,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:45,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:45,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:45,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:31:45,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:45,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:45,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:45,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:31:45,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:45,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 00:31:45,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:45,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:45,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:45,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:45,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:45,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:31:45,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:45,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:45,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:45,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:31:45,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:45,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-27 00:31:45,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:45,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:31:45,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:45,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-27 00:31:45,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:45,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:31:45,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:45,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:45,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:45,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:31:45,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:45,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 00:31:45,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:45,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:31:45,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:45,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 00:31:45,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:45,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:31:46,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:46,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:46,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:46,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-27 00:31:46,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:46,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-27 00:31:46,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:46,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:31:46,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:31:46,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-27 00:31:46,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:46,741 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 221 proven. 2 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2020-10-27 00:31:46,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1870757581] [2020-10-27 00:31:46,742 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:31:46,742 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:31:46,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766580337] [2020-10-27 00:31:46,744 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:31:46,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:31:46,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:31:46,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:31:46,745 INFO L87 Difference]: Start difference. First operand 12564 states and 14099 transitions. Second operand 7 states. [2020-10-27 00:31:56,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:31:56,183 INFO L93 Difference]: Finished difference Result 29643 states and 34417 transitions. [2020-10-27 00:31:56,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:31:56,185 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 945 [2020-10-27 00:31:56,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:31:56,244 INFO L225 Difference]: With dead ends: 29643 [2020-10-27 00:31:56,244 INFO L226 Difference]: Without dead ends: 18497 [2020-10-27 00:31:56,272 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:31:56,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18497 states. [2020-10-27 00:31:56,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18497 to 18403. [2020-10-27 00:31:56,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18403 states. [2020-10-27 00:31:56,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18403 states to 18403 states and 20861 transitions. [2020-10-27 00:31:56,843 INFO L78 Accepts]: Start accepts. Automaton has 18403 states and 20861 transitions. Word has length 945 [2020-10-27 00:31:56,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:31:56,846 INFO L481 AbstractCegarLoop]: Abstraction has 18403 states and 20861 transitions. [2020-10-27 00:31:56,846 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:31:56,846 INFO L276 IsEmpty]: Start isEmpty. Operand 18403 states and 20861 transitions. [2020-10-27 00:31:56,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1029 [2020-10-27 00:31:56,894 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:31:56,895 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:31:56,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 00:31:56,896 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:31:56,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:31:56,897 INFO L82 PathProgramCache]: Analyzing trace with hash -1772302314, now seen corresponding path program 1 times [2020-10-27 00:31:56,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:31:56,897 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [372656346] [2020-10-27 00:31:56,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:31:57,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:57,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:57,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:58,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:02,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:02,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1052 [2020-10-27 00:32:02,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:32:02,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5061 [2020-10-27 00:32:02,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:02,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:32:02,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-27 00:32:02,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-27 00:32:02,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:02,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:32:02,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:02,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:02,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:02,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:32:02,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:02,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:32:02,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:02,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:02,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:02,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:02,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:02,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:32:02,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:02,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:02,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:02,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:32:02,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:02,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-27 00:32:02,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:02,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:02,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:02,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:02,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:02,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:32:02,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:02,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:02,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:02,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:32:02,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:02,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-27 00:32:02,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:02,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:02,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:02,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:02,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:02,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:32:02,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:02,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:02,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:02,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:32:02,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:02,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:32:02,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:02,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:02,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:02,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:02,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:03,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:32:03,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:03,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:03,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:03,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:32:03,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:03,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-27 00:32:03,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:03,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:32:03,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:03,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-27 00:32:03,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:03,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:32:03,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:03,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:03,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:03,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:32:03,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:03,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 00:32:03,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:03,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:32:03,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:03,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 00:32:03,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:03,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:32:03,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:03,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:03,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:03,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 00:32:03,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:03,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-27 00:32:03,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:03,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:32:03,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:32:03,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-27 00:32:03,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:03,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 918 [2020-10-27 00:32:03,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:03,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:03,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:03,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-27 00:32:03,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:03,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 00:32:03,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:03,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:03,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-27 00:32:03,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:03,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:04,568 INFO L134 CoverageAnalysis]: Checked inductivity of 781 backedges. 214 proven. 75 refuted. 0 times theorem prover too weak. 492 trivial. 0 not checked. [2020-10-27 00:32:04,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [372656346] [2020-10-27 00:32:04,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:32:04,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:32:04,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214922089] [2020-10-27 00:32:04,570 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:32:04,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:32:04,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:32:04,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:32:04,571 INFO L87 Difference]: Start difference. First operand 18403 states and 20861 transitions. Second operand 7 states. [2020-10-27 00:32:14,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:32:14,664 INFO L93 Difference]: Finished difference Result 44058 states and 51089 transitions. [2020-10-27 00:32:14,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:32:14,665 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1028 [2020-10-27 00:32:14,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:32:14,739 INFO L225 Difference]: With dead ends: 44058 [2020-10-27 00:32:14,739 INFO L226 Difference]: Without dead ends: 27073 [2020-10-27 00:32:14,782 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:32:14,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27073 states. [2020-10-27 00:32:15,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27073 to 26291. [2020-10-27 00:32:15,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26291 states. [2020-10-27 00:32:15,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26291 states to 26291 states and 30368 transitions. [2020-10-27 00:32:15,349 INFO L78 Accepts]: Start accepts. Automaton has 26291 states and 30368 transitions. Word has length 1028 [2020-10-27 00:32:15,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:32:15,351 INFO L481 AbstractCegarLoop]: Abstraction has 26291 states and 30368 transitions. [2020-10-27 00:32:15,351 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:32:15,351 INFO L276 IsEmpty]: Start isEmpty. Operand 26291 states and 30368 transitions. [2020-10-27 00:32:15,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1058 [2020-10-27 00:32:15,366 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:32:15,368 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:32:15,368 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 00:32:15,369 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:32:15,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:32:15,369 INFO L82 PathProgramCache]: Analyzing trace with hash -408327636, now seen corresponding path program 1 times [2020-10-27 00:32:15,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:32:15,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1731374909] [2020-10-27 00:32:15,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:32:15,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:15,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:16,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:18,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:20,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:20,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1081 [2020-10-27 00:32:20,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:32:20,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5068 [2020-10-27 00:32:20,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:20,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:32:20,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-27 00:32:20,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-27 00:32:20,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:21,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:32:21,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:21,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:21,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:21,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:32:21,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:21,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:32:21,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:21,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:21,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:21,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:21,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:21,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:32:21,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:21,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:21,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:21,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:32:21,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:21,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-27 00:32:21,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:21,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:21,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:21,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:21,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:21,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:32:21,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:21,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:21,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:21,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:32:21,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:21,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-27 00:32:21,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:21,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:21,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:21,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:21,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:21,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:32:21,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:21,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:21,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:21,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:32:21,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:21,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:32:21,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:21,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:21,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:21,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:21,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:21,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:32:21,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:21,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:21,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:21,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:32:21,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:21,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-27 00:32:21,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:21,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:32:21,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:21,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-27 00:32:21,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:21,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:32:21,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:21,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:21,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:21,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:32:21,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:21,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 00:32:21,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:21,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:32:21,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:21,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 00:32:21,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:21,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:32:21,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:21,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:22,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:22,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:32:22,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:22,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 259 [2020-10-27 00:32:22,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:22,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:32:22,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:32:22,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 00:32:22,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:22,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 964 [2020-10-27 00:32:22,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:22,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:22,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:22,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-27 00:32:22,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:22,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 00:32:22,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:22,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:22,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-27 00:32:22,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:22,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:22,821 INFO L134 CoverageAnalysis]: Checked inductivity of 843 backedges. 306 proven. 79 refuted. 0 times theorem prover too weak. 458 trivial. 0 not checked. [2020-10-27 00:32:22,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1731374909] [2020-10-27 00:32:22,821 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:32:22,821 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:32:22,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569353134] [2020-10-27 00:32:22,823 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:32:22,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:32:22,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:32:22,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:32:22,824 INFO L87 Difference]: Start difference. First operand 26291 states and 30368 transitions. Second operand 7 states. [2020-10-27 00:32:36,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:32:36,979 INFO L93 Difference]: Finished difference Result 58477 states and 68248 transitions. [2020-10-27 00:32:36,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:32:36,981 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1057 [2020-10-27 00:32:36,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:32:37,081 INFO L225 Difference]: With dead ends: 58477 [2020-10-27 00:32:37,082 INFO L226 Difference]: Without dead ends: 33604 [2020-10-27 00:32:37,121 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:32:37,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33604 states. [2020-10-27 00:32:37,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33604 to 33453. [2020-10-27 00:32:37,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33453 states. [2020-10-27 00:32:37,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33453 states to 33453 states and 38363 transitions. [2020-10-27 00:32:37,963 INFO L78 Accepts]: Start accepts. Automaton has 33453 states and 38363 transitions. Word has length 1057 [2020-10-27 00:32:37,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:32:37,964 INFO L481 AbstractCegarLoop]: Abstraction has 33453 states and 38363 transitions. [2020-10-27 00:32:37,964 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:32:37,964 INFO L276 IsEmpty]: Start isEmpty. Operand 33453 states and 38363 transitions. [2020-10-27 00:32:37,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1096 [2020-10-27 00:32:37,979 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:32:37,980 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:32:37,980 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 00:32:37,980 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:32:37,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:32:37,981 INFO L82 PathProgramCache]: Analyzing trace with hash 1155885698, now seen corresponding path program 1 times [2020-10-27 00:32:37,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:32:37,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1027206436] [2020-10-27 00:32:37,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:32:38,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:38,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:38,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:40,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:40,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1119 [2020-10-27 00:32:40,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:32:40,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2242 [2020-10-27 00:32:40,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:40,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:32:40,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 997 [2020-10-27 00:32:40,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-27 00:32:40,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:40,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:32:40,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:40,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:40,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:40,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:32:40,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:40,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 00:32:40,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:40,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:40,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:40,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:40,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:40,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:32:40,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:40,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:40,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:40,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:32:40,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:40,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-27 00:32:40,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:40,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:40,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:40,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:40,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:40,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:32:40,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:40,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:40,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:40,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:32:40,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:40,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-27 00:32:40,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:40,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:40,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:40,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:40,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:40,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:32:40,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:40,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:40,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:40,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:32:40,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:40,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 00:32:40,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:40,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:40,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:40,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:40,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:41,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:32:41,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:41,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:41,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:41,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:32:41,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:41,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-27 00:32:41,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:41,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:41,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:41,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:41,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:41,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:32:41,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:41,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:41,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:41,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:32:41,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:41,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 00:32:41,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:41,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:41,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:41,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:41,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:41,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:32:41,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:41,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:41,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:41,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-27 00:32:41,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:41,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-27 00:32:41,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:41,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:32:41,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:41,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-27 00:32:41,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:41,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2020-10-27 00:32:41,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:41,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:41,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:41,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-27 00:32:41,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:41,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-27 00:32:41,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:41,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:32:41,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:32:41,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-27 00:32:41,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:42,285 INFO L134 CoverageAnalysis]: Checked inductivity of 936 backedges. 344 proven. 2 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2020-10-27 00:32:42,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1027206436] [2020-10-27 00:32:42,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:32:42,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:32:42,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091422237] [2020-10-27 00:32:42,287 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:32:42,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:32:42,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:32:42,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:32:42,288 INFO L87 Difference]: Start difference. First operand 33453 states and 38363 transitions. Second operand 7 states. [2020-10-27 00:32:58,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:32:58,273 INFO L93 Difference]: Finished difference Result 72049 states and 84502 transitions. [2020-10-27 00:32:58,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:32:58,274 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1095 [2020-10-27 00:32:58,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:32:58,388 INFO L225 Difference]: With dead ends: 72049 [2020-10-27 00:32:58,388 INFO L226 Difference]: Without dead ends: 40014 [2020-10-27 00:32:58,439 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:32:58,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40014 states. [2020-10-27 00:32:59,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40014 to 38504. [2020-10-27 00:32:59,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38504 states. [2020-10-27 00:32:59,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38504 states to 38504 states and 44184 transitions. [2020-10-27 00:32:59,340 INFO L78 Accepts]: Start accepts. Automaton has 38504 states and 44184 transitions. Word has length 1095 [2020-10-27 00:32:59,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:32:59,341 INFO L481 AbstractCegarLoop]: Abstraction has 38504 states and 44184 transitions. [2020-10-27 00:32:59,341 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:32:59,341 INFO L276 IsEmpty]: Start isEmpty. Operand 38504 states and 44184 transitions. [2020-10-27 00:32:59,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1110 [2020-10-27 00:32:59,356 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:32:59,357 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:32:59,357 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 00:32:59,357 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:32:59,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:32:59,358 INFO L82 PathProgramCache]: Analyzing trace with hash 980752606, now seen corresponding path program 1 times [2020-10-27 00:32:59,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:32:59,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1381664405] [2020-10-27 00:32:59,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:32:59,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:59,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:00,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:00,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1133 [2020-10-27 00:33:00,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:00,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 922 [2020-10-27 00:33:00,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:00,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:33:00,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1110 [2020-10-27 00:33:00,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 00:33:00,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:00,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:33:00,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:00,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:00,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:00,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:33:00,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:00,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:33:00,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:00,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:33:00,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:00,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:33:00,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:00,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:33:00,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:00,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:00,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:00,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:33:00,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:00,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-27 00:33:00,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:00,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:33:00,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:00,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:33:00,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:01,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:33:01,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:01,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:01,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:01,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:33:01,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:01,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 00:33:01,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:01,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:33:01,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:01,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:33:01,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:01,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:33:01,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:01,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:01,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:01,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:33:01,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:01,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:33:01,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:01,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:33:01,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:01,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:33:01,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:01,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:33:01,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:01,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:01,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:01,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:33:01,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:01,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-27 00:33:01,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:01,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:33:01,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:01,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:33:01,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:01,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:33:01,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:01,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:01,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:01,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:33:01,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:01,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 00:33:01,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:01,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:33:01,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:01,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:33:01,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:01,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:33:01,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:01,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:01,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:01,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-27 00:33:01,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:01,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 00:33:01,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:01,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:33:01,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:01,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:33:01,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:01,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2020-10-27 00:33:01,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:01,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:01,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:01,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-27 00:33:01,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:01,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-27 00:33:01,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:01,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:33:01,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:01,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-27 00:33:01,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:02,596 INFO L134 CoverageAnalysis]: Checked inductivity of 978 backedges. 57 proven. 4 refuted. 0 times theorem prover too weak. 917 trivial. 0 not checked. [2020-10-27 00:33:02,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1381664405] [2020-10-27 00:33:02,597 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:33:02,597 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 00:33:02,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081008091] [2020-10-27 00:33:02,598 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 00:33:02,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:33:02,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 00:33:02,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 00:33:02,599 INFO L87 Difference]: Start difference. First operand 38504 states and 44184 transitions. Second operand 5 states. [2020-10-27 00:33:12,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:33:12,550 INFO L93 Difference]: Finished difference Result 88302 states and 102942 transitions. [2020-10-27 00:33:12,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 00:33:12,551 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1109 [2020-10-27 00:33:12,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:33:12,691 INFO L225 Difference]: With dead ends: 88302 [2020-10-27 00:33:12,691 INFO L226 Difference]: Without dead ends: 51216 [2020-10-27 00:33:12,750 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 00:33:12,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51216 states. [2020-10-27 00:33:13,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51216 to 50485. [2020-10-27 00:33:13,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50485 states. [2020-10-27 00:33:13,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50485 states to 50485 states and 56989 transitions. [2020-10-27 00:33:13,803 INFO L78 Accepts]: Start accepts. Automaton has 50485 states and 56989 transitions. Word has length 1109 [2020-10-27 00:33:13,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:33:13,804 INFO L481 AbstractCegarLoop]: Abstraction has 50485 states and 56989 transitions. [2020-10-27 00:33:13,804 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 00:33:13,805 INFO L276 IsEmpty]: Start isEmpty. Operand 50485 states and 56989 transitions. [2020-10-27 00:33:13,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1207 [2020-10-27 00:33:13,824 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:33:13,825 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:33:13,825 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 00:33:13,825 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:33:13,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:33:13,826 INFO L82 PathProgramCache]: Analyzing trace with hash 898244891, now seen corresponding path program 1 times [2020-10-27 00:33:13,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:33:13,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [39575605] [2020-10-27 00:33:13,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:33:14,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:14,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:14,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:17,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:17,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1232 [2020-10-27 00:33:17,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:33:17,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3708 [2020-10-27 00:33:17,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:17,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:33:17,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1110 [2020-10-27 00:33:17,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-27 00:33:17,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:17,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:33:17,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:17,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:17,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:17,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:33:17,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:17,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:33:17,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:17,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:33:17,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:17,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:33:17,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:18,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:33:18,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:18,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:18,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:18,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:33:18,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:18,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-27 00:33:18,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:18,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:33:18,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:18,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:33:18,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:18,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:33:18,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:18,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:18,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:18,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:33:18,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:18,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 00:33:18,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:18,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:33:18,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:18,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:33:18,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:18,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:33:18,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:18,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:18,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:18,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:33:18,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:18,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:33:18,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:18,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:33:18,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:18,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:33:18,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:18,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:33:18,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:18,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:18,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:18,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:33:18,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:18,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-27 00:33:18,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:18,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:33:18,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:18,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:33:18,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:18,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:33:18,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:18,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:18,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:18,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:33:18,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:18,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 00:33:18,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:18,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:33:18,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:18,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:33:18,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:18,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:33:18,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:18,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:18,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:18,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-27 00:33:18,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:18,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 00:33:18,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:18,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:33:18,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:18,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:33:18,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:18,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2020-10-27 00:33:18,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:18,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:18,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:18,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-27 00:33:18,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:18,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-27 00:33:18,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:18,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:33:18,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:18,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-27 00:33:18,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:18,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1096 [2020-10-27 00:33:18,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:18,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:18,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:18,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-27 00:33:18,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:18,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-27 00:33:18,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:18,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:33:18,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:33:18,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-27 00:33:18,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:19,558 INFO L134 CoverageAnalysis]: Checked inductivity of 1379 backedges. 456 proven. 2 refuted. 0 times theorem prover too weak. 921 trivial. 0 not checked. [2020-10-27 00:33:19,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [39575605] [2020-10-27 00:33:19,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:33:19,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:33:19,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126837223] [2020-10-27 00:33:19,560 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:33:19,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:33:19,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:33:19,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:33:19,561 INFO L87 Difference]: Start difference. First operand 50485 states and 56989 transitions. Second operand 7 states. [2020-10-27 00:33:33,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:33:33,431 INFO L93 Difference]: Finished difference Result 113891 states and 129983 transitions. [2020-10-27 00:33:33,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:33:33,432 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1206 [2020-10-27 00:33:33,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:33:33,617 INFO L225 Difference]: With dead ends: 113891 [2020-10-27 00:33:33,618 INFO L226 Difference]: Without dead ends: 64114 [2020-10-27 00:33:33,698 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:33:33,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64114 states. [2020-10-27 00:33:34,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64114 to 63371. [2020-10-27 00:33:34,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63371 states. [2020-10-27 00:33:34,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63371 states to 63371 states and 71301 transitions. [2020-10-27 00:33:34,735 INFO L78 Accepts]: Start accepts. Automaton has 63371 states and 71301 transitions. Word has length 1206 [2020-10-27 00:33:35,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:33:35,091 INFO L481 AbstractCegarLoop]: Abstraction has 63371 states and 71301 transitions. [2020-10-27 00:33:35,092 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:33:35,092 INFO L276 IsEmpty]: Start isEmpty. Operand 63371 states and 71301 transitions. [2020-10-27 00:33:35,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1214 [2020-10-27 00:33:35,130 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:33:35,134 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:33:35,135 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 00:33:35,135 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:33:35,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:33:35,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1780531385, now seen corresponding path program 1 times [2020-10-27 00:33:35,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:33:35,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [206525343] [2020-10-27 00:33:35,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:33:35,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:35,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:36,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:38,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:40,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:40,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1239 [2020-10-27 00:33:40,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:33:40,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5074 [2020-10-27 00:33:40,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:40,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:33:40,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 997 [2020-10-27 00:33:40,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-27 00:33:40,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:40,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:33:40,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:40,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:40,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:40,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:33:40,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:40,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:33:40,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:40,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:33:40,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:40,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:33:40,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:40,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:33:40,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:40,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:40,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:40,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:33:40,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:40,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-27 00:33:40,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:40,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:33:40,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:40,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:33:40,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:40,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:33:40,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:40,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:40,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:40,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:33:40,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:40,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-27 00:33:40,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:40,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:33:40,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:40,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:33:40,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:40,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:33:40,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:40,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:40,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:40,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:33:40,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:40,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:33:40,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:40,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:33:40,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:40,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:33:40,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:41,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:33:41,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:41,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:41,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:41,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:33:41,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:41,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-27 00:33:41,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:41,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:33:41,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:41,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:33:41,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:41,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:33:41,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:41,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:41,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:41,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:33:41,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:41,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 00:33:41,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:41,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:33:41,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:41,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:33:41,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:41,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:33:41,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:41,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:41,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:41,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-27 00:33:41,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:41,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-27 00:33:41,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:41,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:33:41,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:41,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-27 00:33:41,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:41,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2020-10-27 00:33:41,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:41,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:41,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:41,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-27 00:33:41,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:41,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-27 00:33:41,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:41,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:33:41,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:33:41,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-27 00:33:41,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:41,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1075 [2020-10-27 00:33:41,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:41,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:41,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:41,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-27 00:33:41,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:41,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 00:33:41,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:41,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:33:41,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-10-27 00:33:41,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:33:41,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:42,325 INFO L134 CoverageAnalysis]: Checked inductivity of 1393 backedges. 348 proven. 89 refuted. 0 times theorem prover too weak. 956 trivial. 0 not checked. [2020-10-27 00:33:42,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [206525343] [2020-10-27 00:33:42,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:33:42,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:33:42,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967914309] [2020-10-27 00:33:42,327 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:33:42,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:33:42,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:33:42,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:33:42,328 INFO L87 Difference]: Start difference. First operand 63371 states and 71301 transitions. Second operand 7 states.