/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label51.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 13:59:03,231 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 13:59:03,234 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 13:59:03,294 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 13:59:03,294 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 13:59:03,302 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 13:59:03,304 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 13:59:03,309 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 13:59:03,313 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 13:59:03,317 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 13:59:03,319 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 13:59:03,324 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 13:59:03,324 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 13:59:03,328 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 13:59:03,330 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 13:59:03,333 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 13:59:03,335 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 13:59:03,339 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 13:59:03,347 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 13:59:03,355 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 13:59:03,357 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 13:59:03,359 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 13:59:03,360 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 13:59:03,363 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 13:59:03,372 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 13:59:03,372 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 13:59:03,373 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 13:59:03,375 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 13:59:03,376 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 13:59:03,377 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 13:59:03,377 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 13:59:03,378 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 13:59:03,380 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 13:59:03,382 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 13:59:03,383 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 13:59:03,383 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 13:59:03,384 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 13:59:03,384 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 13:59:03,384 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 13:59:03,385 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 13:59:03,386 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 13:59:03,394 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 13:59:03,475 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 13:59:03,476 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 13:59:03,477 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 13:59:03,478 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 13:59:03,478 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 13:59:03,478 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 13:59:03,478 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 13:59:03,479 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 13:59:03,479 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 13:59:03,479 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 13:59:03,479 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 13:59:03,479 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 13:59:03,480 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 13:59:03,480 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 13:59:03,480 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 13:59:03,480 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 13:59:03,480 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 13:59:03,481 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 13:59:03,481 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 13:59:03,481 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 13:59:03,481 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 13:59:03,481 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:59:03,482 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 13:59:03,482 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 13:59:03,482 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 13:59:03,482 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 13:59:03,482 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 13:59:03,483 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 13:59:03,483 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 13:59:03,483 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 13:59:03,894 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 13:59:03,939 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 13:59:03,943 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 13:59:03,944 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 13:59:03,945 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 13:59:03,946 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label51.c [2020-10-28 13:59:04,034 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0d73f2cb0/649457ef9e8943df9b7801610364e5c1/FLAG954294c01 [2020-10-28 13:59:05,050 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 13:59:05,051 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label51.c [2020-10-28 13:59:05,081 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0d73f2cb0/649457ef9e8943df9b7801610364e5c1/FLAG954294c01 [2020-10-28 13:59:05,560 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0d73f2cb0/649457ef9e8943df9b7801610364e5c1 [2020-10-28 13:59:05,565 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 13:59:05,572 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 13:59:05,577 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 13:59:05,577 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 13:59:05,581 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 13:59:05,582 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:59:05" (1/1) ... [2020-10-28 13:59:05,587 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4118f9b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:59:05, skipping insertion in model container [2020-10-28 13:59:05,588 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:59:05" (1/1) ... [2020-10-28 13:59:05,596 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 13:59:05,713 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 13:59:06,779 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:59:06,841 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 13:59:07,358 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:59:07,394 INFO L208 MainTranslator]: Completed translation [2020-10-28 13:59:07,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:59:07 WrapperNode [2020-10-28 13:59:07,396 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 13:59:07,397 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 13:59:07,397 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 13:59:07,397 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 13:59:07,413 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:59:07" (1/1) ... [2020-10-28 13:59:07,416 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:59:07" (1/1) ... [2020-10-28 13:59:07,495 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:59:07" (1/1) ... [2020-10-28 13:59:07,496 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:59:07" (1/1) ... [2020-10-28 13:59:07,710 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:59:07" (1/1) ... [2020-10-28 13:59:07,753 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:59:07" (1/1) ... [2020-10-28 13:59:07,788 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:59:07" (1/1) ... [2020-10-28 13:59:07,822 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 13:59:07,825 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 13:59:07,825 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 13:59:07,825 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 13:59:07,826 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:59:07" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:59:07,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 13:59:07,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 13:59:07,915 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 13:59:07,915 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 13:59:07,915 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 13:59:07,915 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 13:59:07,915 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 13:59:07,916 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 13:59:07,916 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 13:59:07,916 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 13:59:07,916 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 13:59:07,916 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 13:59:07,917 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 13:59:07,917 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 13:59:07,917 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 13:59:07,917 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 13:59:07,917 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 13:59:07,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 13:59:07,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 13:59:07,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 13:59:07,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 13:59:07,918 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 13:59:07,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 13:59:12,118 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 13:59:12,121 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 13:59:12,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:59:12 BoogieIcfgContainer [2020-10-28 13:59:12,125 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 13:59:12,126 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 13:59:12,127 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 13:59:12,130 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 13:59:12,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 01:59:05" (1/3) ... [2020-10-28 13:59:12,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7539b83e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:59:12, skipping insertion in model container [2020-10-28 13:59:12,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:59:07" (2/3) ... [2020-10-28 13:59:12,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7539b83e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:59:12, skipping insertion in model container [2020-10-28 13:59:12,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:59:12" (3/3) ... [2020-10-28 13:59:12,134 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem18_label51.c [2020-10-28 13:59:12,147 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 13:59:12,154 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 13:59:12,168 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 13:59:12,204 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 13:59:12,204 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 13:59:12,204 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 13:59:12,205 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 13:59:12,205 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 13:59:12,205 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 13:59:12,205 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 13:59:12,205 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 13:59:12,246 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states. [2020-10-28 13:59:12,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-28 13:59:12,257 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:59:12,258 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:59:12,259 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:59:12,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:59:12,265 INFO L82 PathProgramCache]: Analyzing trace with hash 468760328, now seen corresponding path program 1 times [2020-10-28 13:59:12,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:59:12,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1327861378] [2020-10-28 13:59:12,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:59:12,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:12,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:13,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:13,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 13:59:13,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:59:13,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 690 [2020-10-28 13:59:13,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:13,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:13,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:59:13,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:59:13,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-28 13:59:13,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 13:59:13,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:59:13,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:13,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:13,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:13,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:59:13,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:59:13,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 13:59:13,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:13,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:13,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:59:13,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:59:13,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:59:13,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:59:13,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:59:13,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1327861378] [2020-10-28 13:59:13,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:59:13,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 13:59:13,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661331564] [2020-10-28 13:59:13,467 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 13:59:13,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:59:13,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 13:59:13,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 13:59:13,490 INFO L87 Difference]: Start difference. First operand 778 states. Second operand 4 states. [2020-10-28 13:59:23,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:59:23,008 INFO L93 Difference]: Finished difference Result 2275 states and 4354 transitions. [2020-10-28 13:59:23,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:59:23,011 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-10-28 13:59:23,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:59:23,048 INFO L225 Difference]: With dead ends: 2275 [2020-10-28 13:59:23,049 INFO L226 Difference]: Without dead ends: 1433 [2020-10-28 13:59:23,067 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:59:23,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1433 states. [2020-10-28 13:59:23,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1433 to 1429. [2020-10-28 13:59:23,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1429 states. [2020-10-28 13:59:23,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1429 states to 1429 states and 2323 transitions. [2020-10-28 13:59:23,249 INFO L78 Accepts]: Start accepts. Automaton has 1429 states and 2323 transitions. Word has length 67 [2020-10-28 13:59:23,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:59:23,250 INFO L481 AbstractCegarLoop]: Abstraction has 1429 states and 2323 transitions. [2020-10-28 13:59:23,250 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 13:59:23,250 INFO L276 IsEmpty]: Start isEmpty. Operand 1429 states and 2323 transitions. [2020-10-28 13:59:23,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-28 13:59:23,266 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:59:23,267 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:59:23,267 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 13:59:23,268 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:59:23,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:59:23,269 INFO L82 PathProgramCache]: Analyzing trace with hash -1851620919, now seen corresponding path program 1 times [2020-10-28 13:59:23,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:59:23,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [548137504] [2020-10-28 13:59:23,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:59:23,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:23,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:23,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:24,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:24,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-28 13:59:24,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:59:24,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1091 [2020-10-28 13:59:24,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:24,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:24,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:59:24,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:59:24,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 13:59:24,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:59:24,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:59:24,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:24,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:24,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:24,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:59:24,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:59:24,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 13:59:24,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:24,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:24,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:59:24,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:59:24,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:59:24,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:59:24,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:59:24,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:24,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:24,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:24,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 13:59:24,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:59:24,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-28 13:59:24,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:24,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:24,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:59:24,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:59:24,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 13:59:24,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:59:24,872 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:59:24,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [548137504] [2020-10-28 13:59:24,873 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:59:24,873 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:59:24,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147163344] [2020-10-28 13:59:24,875 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:59:24,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:59:24,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:59:24,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:59:24,876 INFO L87 Difference]: Start difference. First operand 1429 states and 2323 transitions. Second operand 7 states. [2020-10-28 13:59:36,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:59:36,603 INFO L93 Difference]: Finished difference Result 4365 states and 7125 transitions. [2020-10-28 13:59:36,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:59:36,610 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 136 [2020-10-28 13:59:36,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:59:36,629 INFO L225 Difference]: With dead ends: 4365 [2020-10-28 13:59:36,629 INFO L226 Difference]: Without dead ends: 2942 [2020-10-28 13:59:36,635 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:59:36,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2942 states. [2020-10-28 13:59:36,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2942 to 2878. [2020-10-28 13:59:36,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2878 states. [2020-10-28 13:59:36,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2878 states to 2878 states and 3959 transitions. [2020-10-28 13:59:36,744 INFO L78 Accepts]: Start accepts. Automaton has 2878 states and 3959 transitions. Word has length 136 [2020-10-28 13:59:36,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:59:36,745 INFO L481 AbstractCegarLoop]: Abstraction has 2878 states and 3959 transitions. [2020-10-28 13:59:36,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:59:36,745 INFO L276 IsEmpty]: Start isEmpty. Operand 2878 states and 3959 transitions. [2020-10-28 13:59:36,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-28 13:59:36,748 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:59:36,748 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:59:36,748 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 13:59:36,748 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:59:36,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:59:36,749 INFO L82 PathProgramCache]: Analyzing trace with hash 52924261, now seen corresponding path program 1 times [2020-10-28 13:59:36,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:59:36,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2084078200] [2020-10-28 13:59:36,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:59:36,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:36,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:37,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:37,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:37,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-28 13:59:37,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:59:37,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 676 [2020-10-28 13:59:37,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:37,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:37,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:59:37,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:59:37,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-28 13:59:37,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 13:59:37,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:59:37,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:37,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:37,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:37,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:59:37,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:59:37,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 13:59:37,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:37,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:37,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:59:37,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:59:37,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:59:37,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:59:37,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:59:37,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:37,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:37,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:37,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 13:59:37,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:59:37,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-28 13:59:37,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:37,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:37,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:59:37,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:59:37,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-28 13:59:37,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:59:37,887 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:59:37,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2084078200] [2020-10-28 13:59:37,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:59:37,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:59:37,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727235772] [2020-10-28 13:59:37,890 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:59:37,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:59:37,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:59:37,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:59:37,893 INFO L87 Difference]: Start difference. First operand 2878 states and 3959 transitions. Second operand 7 states. [2020-10-28 13:59:50,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:59:50,118 INFO L93 Difference]: Finished difference Result 8001 states and 11143 transitions. [2020-10-28 13:59:50,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 13:59:50,120 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 139 [2020-10-28 13:59:50,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:59:50,152 INFO L225 Difference]: With dead ends: 8001 [2020-10-28 13:59:50,152 INFO L226 Difference]: Without dead ends: 5129 [2020-10-28 13:59:50,159 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:59:50,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5129 states. [2020-10-28 13:59:50,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5129 to 5073. [2020-10-28 13:59:50,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5073 states. [2020-10-28 13:59:50,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5073 states to 5073 states and 6815 transitions. [2020-10-28 13:59:50,301 INFO L78 Accepts]: Start accepts. Automaton has 5073 states and 6815 transitions. Word has length 139 [2020-10-28 13:59:50,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:59:50,302 INFO L481 AbstractCegarLoop]: Abstraction has 5073 states and 6815 transitions. [2020-10-28 13:59:50,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:59:50,302 INFO L276 IsEmpty]: Start isEmpty. Operand 5073 states and 6815 transitions. [2020-10-28 13:59:50,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-28 13:59:50,304 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:59:50,305 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:59:50,305 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 13:59:50,305 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:59:50,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:59:50,306 INFO L82 PathProgramCache]: Analyzing trace with hash -1550931703, now seen corresponding path program 1 times [2020-10-28 13:59:50,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:59:50,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1992310152] [2020-10-28 13:59:50,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:59:50,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:50,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:50,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:51,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:51,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-28 13:59:51,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:59:51,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 904 [2020-10-28 13:59:51,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:51,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:51,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:59:51,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:59:51,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-28 13:59:51,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:59:51,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:59:51,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:51,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:51,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:51,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:59:51,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:59:51,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 13:59:51,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:51,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:51,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:59:51,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:59:51,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:59:51,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:59:51,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:59:51,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:51,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:51,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:51,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-28 13:59:51,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:59:51,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-28 13:59:51,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:51,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:51,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:59:51,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:59:51,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-28 13:59:51,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:59:51,670 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:59:51,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1992310152] [2020-10-28 13:59:51,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:59:51,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:59:51,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583781496] [2020-10-28 13:59:51,673 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:59:51,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:59:51,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:59:51,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:59:51,674 INFO L87 Difference]: Start difference. First operand 5073 states and 6815 transitions. Second operand 7 states. [2020-10-28 14:00:02,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:00:02,753 INFO L93 Difference]: Finished difference Result 11847 states and 16073 transitions. [2020-10-28 14:00:02,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 14:00:02,754 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 157 [2020-10-28 14:00:02,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:00:02,801 INFO L225 Difference]: With dead ends: 11847 [2020-10-28 14:00:02,801 INFO L226 Difference]: Without dead ends: 6780 [2020-10-28 14:00:02,816 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 14:00:02,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6780 states. [2020-10-28 14:00:03,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6780 to 6555. [2020-10-28 14:00:03,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6555 states. [2020-10-28 14:00:03,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6555 states to 6555 states and 8403 transitions. [2020-10-28 14:00:03,080 INFO L78 Accepts]: Start accepts. Automaton has 6555 states and 8403 transitions. Word has length 157 [2020-10-28 14:00:03,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:00:03,080 INFO L481 AbstractCegarLoop]: Abstraction has 6555 states and 8403 transitions. [2020-10-28 14:00:03,080 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:00:03,081 INFO L276 IsEmpty]: Start isEmpty. Operand 6555 states and 8403 transitions. [2020-10-28 14:00:03,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-28 14:00:03,083 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:00:03,083 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:00:03,083 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 14:00:03,084 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:00:03,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:00:03,084 INFO L82 PathProgramCache]: Analyzing trace with hash 159800321, now seen corresponding path program 1 times [2020-10-28 14:00:03,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:00:03,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [856110580] [2020-10-28 14:00:03,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:00:03,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:03,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:03,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:03,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:05,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:05,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-28 14:00:05,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:00:05,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2429 [2020-10-28 14:00:05,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:05,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:05,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:00:05,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:00:05,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-28 14:00:05,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:00:05,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:00:05,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:05,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:05,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:05,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:00:05,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:00:05,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 14:00:05,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:05,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:05,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:00:05,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:00:05,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:00:05,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:00:05,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:00:05,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:05,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:05,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:05,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-28 14:00:05,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:00:05,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-28 14:00:05,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:05,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:05,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:00:05,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:00:05,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-28 14:00:05,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:00:06,219 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:00:06,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [856110580] [2020-10-28 14:00:06,221 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:00:06,221 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 14:00:06,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918672460] [2020-10-28 14:00:06,222 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:00:06,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:00:06,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:00:06,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:00:06,223 INFO L87 Difference]: Start difference. First operand 6555 states and 8403 transitions. Second operand 7 states. [2020-10-28 14:00:17,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:00:17,067 INFO L93 Difference]: Finished difference Result 11876 states and 15847 transitions. [2020-10-28 14:00:17,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 14:00:17,068 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 164 [2020-10-28 14:00:17,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:00:17,102 INFO L225 Difference]: With dead ends: 11876 [2020-10-28 14:00:17,103 INFO L226 Difference]: Without dead ends: 6739 [2020-10-28 14:00:17,116 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-28 14:00:17,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6739 states. [2020-10-28 14:00:17,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6739 to 6568. [2020-10-28 14:00:17,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6568 states. [2020-10-28 14:00:17,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6568 states to 6568 states and 8397 transitions. [2020-10-28 14:00:17,363 INFO L78 Accepts]: Start accepts. Automaton has 6568 states and 8397 transitions. Word has length 164 [2020-10-28 14:00:17,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:00:17,364 INFO L481 AbstractCegarLoop]: Abstraction has 6568 states and 8397 transitions. [2020-10-28 14:00:17,364 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:00:17,364 INFO L276 IsEmpty]: Start isEmpty. Operand 6568 states and 8397 transitions. [2020-10-28 14:00:17,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2020-10-28 14:00:17,370 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:00:17,371 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:00:17,371 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 14:00:17,371 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:00:17,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:00:17,372 INFO L82 PathProgramCache]: Analyzing trace with hash 270206304, now seen corresponding path program 1 times [2020-10-28 14:00:17,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:00:17,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1820917804] [2020-10-28 14:00:17,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:00:17,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:17,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:17,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:17,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:18,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:19,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:21,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:21,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 364 [2020-10-28 14:00:21,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 14:00:21,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4337 [2020-10-28 14:00:21,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:21,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:21,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:00:21,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-28 14:00:21,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-28 14:00:21,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:00:21,991 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-28 14:00:21,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:00:21,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:21,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:22,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:22,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:00:22,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:00:22,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:00:22,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:22,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:22,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:00:22,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:00:22,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:00:22,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:00:22,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:00:22,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:22,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:22,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:22,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-28 14:00:22,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:00:22,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-28 14:00:22,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:22,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:22,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:00:22,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:00:22,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-28 14:00:22,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:00:22,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-28 14:00:22,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:22,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:22,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:22,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-28 14:00:22,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:00:22,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-10-28 14:00:22,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:22,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:22,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:00:22,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:00:22,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-28 14:00:22,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:00:22,919 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 212 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 14:00:22,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1820917804] [2020-10-28 14:00:22,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:00:22,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 14:00:22,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131381478] [2020-10-28 14:00:22,922 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:00:22,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:00:22,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:00:22,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:00:22,924 INFO L87 Difference]: Start difference. First operand 6568 states and 8397 transitions. Second operand 7 states. [2020-10-28 14:00:35,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:00:35,677 INFO L93 Difference]: Finished difference Result 14698 states and 19171 transitions. [2020-10-28 14:00:35,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 14:00:35,679 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 350 [2020-10-28 14:00:35,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:00:35,707 INFO L225 Difference]: With dead ends: 14698 [2020-10-28 14:00:35,707 INFO L226 Difference]: Without dead ends: 7334 [2020-10-28 14:00:35,722 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 14:00:35,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7334 states. [2020-10-28 14:00:35,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7334 to 7297. [2020-10-28 14:00:35,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7297 states. [2020-10-28 14:00:35,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7297 states to 7297 states and 8284 transitions. [2020-10-28 14:00:35,875 INFO L78 Accepts]: Start accepts. Automaton has 7297 states and 8284 transitions. Word has length 350 [2020-10-28 14:00:35,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:00:35,876 INFO L481 AbstractCegarLoop]: Abstraction has 7297 states and 8284 transitions. [2020-10-28 14:00:35,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:00:35,876 INFO L276 IsEmpty]: Start isEmpty. Operand 7297 states and 8284 transitions. [2020-10-28 14:00:35,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 717 [2020-10-28 14:00:35,895 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:00:35,896 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:00:35,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 14:00:35,897 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:00:35,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:00:35,899 INFO L82 PathProgramCache]: Analyzing trace with hash -498639062, now seen corresponding path program 1 times [2020-10-28 14:00:35,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:00:35,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1218165761] [2020-10-28 14:00:35,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:00:36,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:36,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:36,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:36,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:41,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:41,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 734 [2020-10-28 14:00:41,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:00:41,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-28 14:00:41,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:41,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:41,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:00:41,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 535 [2020-10-28 14:00:41,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-28 14:00:41,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:00:41,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:00:41,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:41,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:41,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:41,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:00:41,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:00:41,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 14:00:41,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:41,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:41,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:00:41,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:00:41,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:00:41,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:00:41,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:00:41,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:41,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:42,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:42,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-28 14:00:42,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:00:42,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 482 [2020-10-28 14:00:42,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:42,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:42,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:00:42,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:00:42,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 520 [2020-10-28 14:00:42,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:00:42,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 14:00:42,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:42,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:42,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:42,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-28 14:00:42,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:00:42,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-10-28 14:00:42,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:42,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:42,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:00:42,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:00:42,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 235 [2020-10-28 14:00:42,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:00:42,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-28 14:00:42,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:42,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:42,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:42,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 14:00:42,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:00:42,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 14:00:42,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:42,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:42,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:00:42,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:00:42,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 14:00:42,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:00:42,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-28 14:00:42,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:42,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:43,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:43,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 14:00:43,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:00:43,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-28 14:00:43,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:43,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:43,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:00:43,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:00:43,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-28 14:00:43,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:00:43,918 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 237 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 14:00:43,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1218165761] [2020-10-28 14:00:43,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:00:43,919 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 14:00:43,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155836369] [2020-10-28 14:00:43,922 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:00:43,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:00:43,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:00:43,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:00:43,923 INFO L87 Difference]: Start difference. First operand 7297 states and 8284 transitions. Second operand 7 states. [2020-10-28 14:00:54,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:00:54,358 INFO L93 Difference]: Finished difference Result 15386 states and 17802 transitions. [2020-10-28 14:00:54,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 14:00:54,360 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 716 [2020-10-28 14:00:54,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:00:54,389 INFO L225 Difference]: With dead ends: 15386 [2020-10-28 14:00:54,390 INFO L226 Difference]: Without dead ends: 8797 [2020-10-28 14:00:54,405 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 14:00:54,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8797 states. [2020-10-28 14:00:54,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8797 to 8750. [2020-10-28 14:00:54,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8750 states. [2020-10-28 14:00:54,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8750 states to 8750 states and 9843 transitions. [2020-10-28 14:00:54,638 INFO L78 Accepts]: Start accepts. Automaton has 8750 states and 9843 transitions. Word has length 716 [2020-10-28 14:00:54,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:00:54,640 INFO L481 AbstractCegarLoop]: Abstraction has 8750 states and 9843 transitions. [2020-10-28 14:00:54,640 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:00:54,640 INFO L276 IsEmpty]: Start isEmpty. Operand 8750 states and 9843 transitions. [2020-10-28 14:00:54,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 902 [2020-10-28 14:00:54,676 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:00:54,678 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 14:00:54,678 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 14:00:54,678 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:00:54,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:00:54,679 INFO L82 PathProgramCache]: Analyzing trace with hash -1638728074, now seen corresponding path program 1 times [2020-10-28 14:00:54,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:00:54,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [62317610] [2020-10-28 14:00:54,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:00:54,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:55,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:55,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:59,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:59,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:59,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 921 [2020-10-28 14:00:59,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:00:59,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5075 [2020-10-28 14:00:59,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:59,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:59,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:00:59,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-28 14:00:59,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-28 14:00:59,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:00,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:01:00,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:00,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:00,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:00,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:01:00,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:00,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:01:00,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:00,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:00,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:01:00,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:01:00,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:01:00,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:00,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:01:00,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:00,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:00,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:00,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-28 14:01:00,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:00,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-28 14:01:00,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:00,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:00,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:01:00,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:01:00,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:01:00,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:00,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 14:01:00,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:00,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:00,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:00,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-28 14:01:00,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:00,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-28 14:01:00,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:00,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:00,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:01:00,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:01:00,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:01:00,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:00,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-28 14:01:00,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:00,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:00,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:00,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 14:01:00,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:00,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 14:01:00,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:00,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:00,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:01:00,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:01:00,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:01:00,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:00,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-28 14:01:00,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:00,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:01,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:01,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 14:01:01,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:01,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-28 14:01:01,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:01,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:01,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:01:01,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:01:01,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-28 14:01:01,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:01,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 14:01:01,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:01,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:01,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:01,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 14:01:01,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:01,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 14:01:01,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:01,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:01,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:01:01,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:01:01,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 14:01:01,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:01,765 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 122 proven. 2 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2020-10-28 14:01:01,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [62317610] [2020-10-28 14:01:01,766 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:01:01,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 14:01:01,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994297848] [2020-10-28 14:01:01,767 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 14:01:01,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:01:01,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 14:01:01,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:01:01,769 INFO L87 Difference]: Start difference. First operand 8750 states and 9843 transitions. Second operand 5 states. [2020-10-28 14:01:10,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:01:10,363 INFO L93 Difference]: Finished difference Result 18959 states and 21792 transitions. [2020-10-28 14:01:10,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 14:01:10,368 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 901 [2020-10-28 14:01:10,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:01:10,404 INFO L225 Difference]: With dead ends: 18959 [2020-10-28 14:01:10,404 INFO L226 Difference]: Without dead ends: 11627 [2020-10-28 14:01:10,421 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 14:01:10,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11627 states. [2020-10-28 14:01:10,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11627 to 10914. [2020-10-28 14:01:10,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10914 states. [2020-10-28 14:01:10,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10914 states to 10914 states and 12281 transitions. [2020-10-28 14:01:10,733 INFO L78 Accepts]: Start accepts. Automaton has 10914 states and 12281 transitions. Word has length 901 [2020-10-28 14:01:10,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:01:10,736 INFO L481 AbstractCegarLoop]: Abstraction has 10914 states and 12281 transitions. [2020-10-28 14:01:10,736 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 14:01:10,737 INFO L276 IsEmpty]: Start isEmpty. Operand 10914 states and 12281 transitions. [2020-10-28 14:01:10,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 992 [2020-10-28 14:01:10,750 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:01:10,752 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 14:01:10,752 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 14:01:10,752 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:01:10,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:01:10,753 INFO L82 PathProgramCache]: Analyzing trace with hash -240848137, now seen corresponding path program 1 times [2020-10-28 14:01:10,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:01:10,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [40206683] [2020-10-28 14:01:10,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:01:10,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:11,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:11,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:14,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:14,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1013 [2020-10-28 14:01:14,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:01:14,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3635 [2020-10-28 14:01:14,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:14,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:14,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:01:14,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-28 14:01:14,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-28 14:01:14,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:14,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:01:14,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:14,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:14,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:14,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:01:14,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:14,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:01:14,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:14,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:14,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:01:14,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:01:14,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:01:14,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:14,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:01:14,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:14,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:15,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:15,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-28 14:01:15,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:15,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-28 14:01:15,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:15,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:15,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:01:15,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:01:15,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:01:15,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:15,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 14:01:15,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:15,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:15,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:15,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-28 14:01:15,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:15,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-28 14:01:15,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:15,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:15,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:01:15,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:01:15,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:01:15,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:15,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-28 14:01:15,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:15,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:15,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:15,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 14:01:15,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:15,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:01:15,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:15,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:15,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:01:15,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:01:15,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:01:15,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:15,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-28 14:01:15,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:15,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:15,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:15,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 14:01:15,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:15,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-28 14:01:15,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:15,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:15,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:01:15,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:01:15,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-28 14:01:15,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:15,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 14:01:15,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:15,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:15,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:15,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 14:01:15,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:15,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-28 14:01:15,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:15,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:15,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:01:15,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:01:15,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 14:01:15,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:15,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-28 14:01:15,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:15,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:16,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:16,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-28 14:01:16,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:16,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-28 14:01:16,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:16,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:16,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:01:16,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:01:16,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-28 14:01:16,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:16,655 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 359 proven. 2 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2020-10-28 14:01:16,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [40206683] [2020-10-28 14:01:16,656 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:01:16,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 14:01:16,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605996709] [2020-10-28 14:01:16,657 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:01:16,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:01:16,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:01:16,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:01:16,659 INFO L87 Difference]: Start difference. First operand 10914 states and 12281 transitions. Second operand 7 states. [2020-10-28 14:01:25,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:01:25,824 INFO L93 Difference]: Finished difference Result 28457 states and 33152 transitions. [2020-10-28 14:01:25,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 14:01:25,826 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 991 [2020-10-28 14:01:25,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:01:25,896 INFO L225 Difference]: With dead ends: 28457 [2020-10-28 14:01:25,896 INFO L226 Difference]: Without dead ends: 18961 [2020-10-28 14:01:25,921 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 14:01:25,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18961 states. [2020-10-28 14:01:26,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18961 to 18230. [2020-10-28 14:01:26,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18230 states. [2020-10-28 14:01:26,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18230 states to 18230 states and 20804 transitions. [2020-10-28 14:01:26,306 INFO L78 Accepts]: Start accepts. Automaton has 18230 states and 20804 transitions. Word has length 991 [2020-10-28 14:01:26,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:01:26,309 INFO L481 AbstractCegarLoop]: Abstraction has 18230 states and 20804 transitions. [2020-10-28 14:01:26,309 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:01:26,309 INFO L276 IsEmpty]: Start isEmpty. Operand 18230 states and 20804 transitions. [2020-10-28 14:01:26,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1089 [2020-10-28 14:01:26,329 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:01:26,331 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:01:26,331 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 14:01:26,331 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:01:26,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:01:26,332 INFO L82 PathProgramCache]: Analyzing trace with hash -1815732502, now seen corresponding path program 1 times [2020-10-28 14:01:26,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:01:26,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1778754954] [2020-10-28 14:01:26,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:01:26,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:26,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:27,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:27,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:31,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:31,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1112 [2020-10-28 14:01:31,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:01:31,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5120 [2020-10-28 14:01:31,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:31,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:31,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:01:31,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 930 [2020-10-28 14:01:31,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-28 14:01:31,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:32,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:01:32,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:32,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:32,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:32,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:01:32,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:32,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:01:32,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:32,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:32,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:01:32,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:01:32,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:01:32,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:32,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:01:32,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:32,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:32,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:32,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-28 14:01:32,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:32,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-28 14:01:32,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:32,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:32,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:01:32,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:01:32,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:01:32,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:32,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 14:01:32,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:32,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:32,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:32,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-28 14:01:32,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:32,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-28 14:01:32,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:32,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:32,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:01:32,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:01:32,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:01:32,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:32,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-28 14:01:32,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:32,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:32,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:32,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 14:01:32,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:32,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:01:32,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:32,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:32,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:01:32,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:01:32,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:01:32,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:32,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-28 14:01:32,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:32,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:32,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:32,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 14:01:32,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:32,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-28 14:01:32,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:32,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:32,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:01:32,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:01:32,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:01:32,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:33,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 14:01:33,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:33,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:33,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:33,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 14:01:33,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:33,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 14:01:33,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:33,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:33,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:01:33,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:01:33,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:01:33,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:33,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-28 14:01:33,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:33,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:33,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:33,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 14:01:33,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:33,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 14:01:33,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:33,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:33,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:01:33,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:01:33,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 14:01:33,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:33,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 918 [2020-10-28 14:01:33,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:33,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:33,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:33,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 14:01:33,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:33,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-28 14:01:33,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:33,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:33,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:01:33,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:01:33,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-28 14:01:33,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:34,308 INFO L134 CoverageAnalysis]: Checked inductivity of 993 backedges. 535 proven. 2 refuted. 0 times theorem prover too weak. 456 trivial. 0 not checked. [2020-10-28 14:01:34,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1778754954] [2020-10-28 14:01:34,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:01:34,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 14:01:34,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853839445] [2020-10-28 14:01:34,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:01:34,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:01:34,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:01:34,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:01:34,310 INFO L87 Difference]: Start difference. First operand 18230 states and 20804 transitions. Second operand 7 states. [2020-10-28 14:01:44,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:01:44,978 INFO L93 Difference]: Finished difference Result 39386 states and 45536 transitions. [2020-10-28 14:01:44,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 14:01:44,980 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1088 [2020-10-28 14:01:44,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:01:45,037 INFO L225 Difference]: With dead ends: 39386 [2020-10-28 14:01:45,037 INFO L226 Difference]: Without dead ends: 22574 [2020-10-28 14:01:45,068 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 14:01:45,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22574 states. [2020-10-28 14:01:45,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22574 to 21831. [2020-10-28 14:01:45,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21831 states. [2020-10-28 14:01:45,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21831 states to 21831 states and 24660 transitions. [2020-10-28 14:01:45,667 INFO L78 Accepts]: Start accepts. Automaton has 21831 states and 24660 transitions. Word has length 1088 [2020-10-28 14:01:45,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:01:45,669 INFO L481 AbstractCegarLoop]: Abstraction has 21831 states and 24660 transitions. [2020-10-28 14:01:45,669 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:01:45,669 INFO L276 IsEmpty]: Start isEmpty. Operand 21831 states and 24660 transitions. [2020-10-28 14:01:45,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1104 [2020-10-28 14:01:45,693 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:01:45,697 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-28 14:01:45,697 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 14:01:45,697 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:01:45,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:01:45,698 INFO L82 PathProgramCache]: Analyzing trace with hash 1300728740, now seen corresponding path program 1 times [2020-10-28 14:01:45,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:01:45,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1744023253] [2020-10-28 14:01:45,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:01:45,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:46,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:46,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:48,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:51,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:51,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1127 [2020-10-28 14:01:51,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:01:51,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5098 [2020-10-28 14:01:51,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:51,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:51,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:01:51,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-28 14:01:51,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-28 14:01:51,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:51,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:01:51,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:51,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:51,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:51,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:01:51,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:51,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 14:01:51,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:51,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:51,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:01:51,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:01:51,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:01:51,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:51,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:01:51,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:51,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:51,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:51,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-28 14:01:51,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:51,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 287 [2020-10-28 14:01:51,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:51,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:51,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:01:51,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:01:51,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:01:51,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:51,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 14:01:51,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:51,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:51,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:51,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-28 14:01:51,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:51,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-28 14:01:51,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:51,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:51,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:01:51,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:01:51,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:01:51,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:51,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-28 14:01:52,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:52,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:52,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:52,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 14:01:52,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:52,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:01:52,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:52,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:52,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:01:52,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:01:52,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:01:52,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:52,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-28 14:01:52,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:52,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:52,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:52,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 14:01:52,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:52,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-28 14:01:52,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:52,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:52,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:01:52,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:01:52,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-28 14:01:52,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:52,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 14:01:52,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:52,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:52,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:52,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 14:01:52,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:52,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 14:01:52,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:52,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:52,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:01:52,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:01:52,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 14:01:52,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:52,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-28 14:01:52,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:52,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:52,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:52,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 14:01:52,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:52,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 261 [2020-10-28 14:01:52,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:52,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:52,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:01:52,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:01:52,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-28 14:01:52,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:52,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 964 [2020-10-28 14:01:52,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:52,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:52,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:52,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 14:01:52,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:52,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 14:01:52,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:52,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:52,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:01:52,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-28 14:01:52,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:01:52,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:53,618 INFO L134 CoverageAnalysis]: Checked inductivity of 1027 backedges. 490 proven. 79 refuted. 0 times theorem prover too weak. 458 trivial. 0 not checked. [2020-10-28 14:01:53,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1744023253] [2020-10-28 14:01:53,619 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:01:53,619 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 14:01:53,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18701759] [2020-10-28 14:01:53,620 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:01:53,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:01:53,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:01:53,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:01:53,621 INFO L87 Difference]: Start difference. First operand 21831 states and 24660 transitions. Second operand 7 states. [2020-10-28 14:02:03,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:02:03,008 INFO L93 Difference]: Finished difference Result 49440 states and 56711 transitions. [2020-10-28 14:02:03,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 14:02:03,010 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1103 [2020-10-28 14:02:03,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:02:03,097 INFO L225 Difference]: With dead ends: 49440 [2020-10-28 14:02:03,097 INFO L226 Difference]: Without dead ends: 29027 [2020-10-28 14:02:03,131 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 14:02:03,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29027 states. [2020-10-28 14:02:03,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29027 to 29001. [2020-10-28 14:02:03,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29001 states. [2020-10-28 14:02:03,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29001 states to 29001 states and 33109 transitions. [2020-10-28 14:02:03,677 INFO L78 Accepts]: Start accepts. Automaton has 29001 states and 33109 transitions. Word has length 1103 [2020-10-28 14:02:03,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:02:03,678 INFO L481 AbstractCegarLoop]: Abstraction has 29001 states and 33109 transitions. [2020-10-28 14:02:03,678 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:02:03,678 INFO L276 IsEmpty]: Start isEmpty. Operand 29001 states and 33109 transitions. [2020-10-28 14:02:03,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1247 [2020-10-28 14:02:03,701 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:02:03,702 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:02:03,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 14:02:03,702 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:02:03,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:02:03,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1816994333, now seen corresponding path program 1 times [2020-10-28 14:02:03,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:02:03,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1724598828] [2020-10-28 14:02:03,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:02:03,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:02:04,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:04,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:07,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:09,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:02:09,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1272 [2020-10-28 14:02:09,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:02:09,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-28 14:02:09,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:02:09,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:02:09,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:02:09,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 997 [2020-10-28 14:02:09,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 14:02:09,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:02:09,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:02:09,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:02:09,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:09,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:02:09,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:02:09,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:02:09,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:02:09,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:02:09,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:02:09,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:02:09,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:02:09,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:02:09,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:02:09,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:02:09,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:02:09,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:09,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:02:09,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-28 14:02:09,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:02:09,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-28 14:02:09,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:02:09,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:02:09,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:02:09,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:02:09,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:02:09,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:02:09,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 14:02:09,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:02:09,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:09,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:02:09,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-28 14:02:09,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:02:09,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-28 14:02:09,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:02:09,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:02:09,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:02:09,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:02:09,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:02:09,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:02:09,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-28 14:02:09,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:02:09,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:09,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:02:09,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 14:02:09,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:02:09,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:02:09,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:02:09,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:02:09,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:02:09,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:02:09,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:02:09,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:02:09,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-28 14:02:09,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:02:09,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:09,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:02:09,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 14:02:09,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:02:09,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-28 14:02:09,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:02:09,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:02:09,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:02:09,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:02:09,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:02:09,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:02:09,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 14:02:09,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:02:09,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:09,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:02:09,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 14:02:09,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:02:09,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 14:02:09,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:02:09,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:02:09,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:02:09,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:02:09,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:02:09,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:02:10,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-28 14:02:10,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:02:10,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:10,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:02:10,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-28 14:02:10,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:02:10,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-28 14:02:10,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:02:10,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:02:10,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:02:10,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:02:10,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-28 14:02:10,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:02:10,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2020-10-28 14:02:10,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:02:10,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:10,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:02:10,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 14:02:10,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:02:10,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-28 14:02:10,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:02:10,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:02:10,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:02:10,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:02:10,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-28 14:02:10,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:02:10,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1107 [2020-10-28 14:02:10,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:02:10,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:10,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:02:10,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 14:02:10,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:02:10,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 14:02:10,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:02:10,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:02:10,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:02:10,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-28 14:02:10,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:02:10,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:02:11,232 INFO L134 CoverageAnalysis]: Checked inductivity of 1574 backedges. 674 proven. 79 refuted. 0 times theorem prover too weak. 821 trivial. 0 not checked. [2020-10-28 14:02:11,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1724598828] [2020-10-28 14:02:11,232 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:02:11,233 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 14:02:11,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880520380] [2020-10-28 14:02:11,234 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:02:11,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:02:11,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:02:11,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:02:11,234 INFO L87 Difference]: Start difference. First operand 29001 states and 33109 transitions. Second operand 7 states. [2020-10-28 14:02:21,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:02:21,646 INFO L93 Difference]: Finished difference Result 63007 states and 71936 transitions. [2020-10-28 14:02:21,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 14:02:21,648 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1246 [2020-10-28 14:02:21,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:02:21,753 INFO L225 Difference]: With dead ends: 63007 [2020-10-28 14:02:21,753 INFO L226 Difference]: Without dead ends: 35424 [2020-10-28 14:02:21,797 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-28 14:02:21,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35424 states. [2020-10-28 14:02:22,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35424 to 33947. [2020-10-28 14:02:22,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33947 states. [2020-10-28 14:02:22,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33947 states to 33947 states and 38534 transitions. [2020-10-28 14:02:22,374 INFO L78 Accepts]: Start accepts. Automaton has 33947 states and 38534 transitions. Word has length 1246 [2020-10-28 14:02:22,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:02:22,375 INFO L481 AbstractCegarLoop]: Abstraction has 33947 states and 38534 transitions. [2020-10-28 14:02:22,375 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:02:22,375 INFO L276 IsEmpty]: Start isEmpty. Operand 33947 states and 38534 transitions. [2020-10-28 14:02:22,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1286 [2020-10-28 14:02:22,399 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:02:22,400 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1] [2020-10-28 14:02:22,401 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 14:02:22,401 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:02:22,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:02:22,402 INFO L82 PathProgramCache]: Analyzing trace with hash 18381778, now seen corresponding path program 1 times [2020-10-28 14:02:22,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:02:22,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1142058271] [2020-10-28 14:02:22,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:02:22,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:02:22,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:23,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:25,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:27,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:02:27,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1313 [2020-10-28 14:02:27,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:02:27,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5102 [2020-10-28 14:02:27,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:02:27,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:02:27,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:02:27,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 997 [2020-10-28 14:02:27,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-28 14:02:27,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:02:27,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:02:27,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:02:27,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:27,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:02:27,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:02:27,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:02:27,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:02:27,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:02:27,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:02:27,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:02:27,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:02:27,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:02:27,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:02:28,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:02:28,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:02:28,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:28,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:02:28,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-28 14:02:28,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:02:28,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-28 14:02:28,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:02:28,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:02:28,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:02:28,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:02:28,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:02:28,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:02:28,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 14:02:28,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:02:28,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:28,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:02:28,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-28 14:02:28,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:02:28,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-28 14:02:28,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:02:28,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:02:28,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:02:28,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:02:28,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:02:28,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:02:28,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-28 14:02:28,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:02:28,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:28,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:02:28,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 14:02:28,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:02:28,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 14:02:28,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:02:28,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:02:28,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:02:28,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:02:28,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:02:28,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:02:28,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-28 14:02:28,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:02:28,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:28,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:02:28,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 14:02:28,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:02:28,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-28 14:02:28,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:02:28,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:02:28,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:02:28,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:02:28,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:02:28,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:02:28,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 14:02:28,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:02:28,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:28,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:02:28,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 14:02:28,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:02:28,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 14:02:28,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:02:28,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:02:28,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:02:28,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:02:28,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:02:28,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:02:28,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-28 14:02:28,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:02:28,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:28,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:02:28,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-28 14:02:28,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:02:28,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-28 14:02:28,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:02:28,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:02:28,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:02:28,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:02:28,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-28 14:02:28,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:02:29,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2020-10-28 14:02:29,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:02:29,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:29,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:02:29,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-28 14:02:29,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:02:29,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-28 14:02:29,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:02:29,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:02:29,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:02:29,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:02:29,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-28 14:02:29,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:02:29,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1075 [2020-10-28 14:02:29,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:02:29,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:29,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:02:29,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 14:02:29,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:02:29,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 14:02:29,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:02:29,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:02:29,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:02:29,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-28 14:02:29,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:02:29,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:02:29,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1146 [2020-10-28 14:02:29,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:02:29,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:29,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:02:29,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 14:02:29,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:02:29,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 14:02:29,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:02:29,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:02:29,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:02:29,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-28 14:02:29,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:02:29,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:02:30,041 INFO L134 CoverageAnalysis]: Checked inductivity of 1892 backedges. 649 proven. 147 refuted. 0 times theorem prover too weak. 1096 trivial. 0 not checked. [2020-10-28 14:02:30,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1142058271] [2020-10-28 14:02:30,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:02:30,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 14:02:30,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547633530] [2020-10-28 14:02:30,043 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 14:02:30,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:02:30,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 14:02:30,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 14:02:30,044 INFO L87 Difference]: Start difference. First operand 33947 states and 38534 transitions. Second operand 8 states.