/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label55.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 08:24:28,250 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 08:24:28,253 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 08:24:28,292 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 08:24:28,292 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 08:24:28,294 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 08:24:28,296 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 08:24:28,299 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 08:24:28,302 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 08:24:28,304 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 08:24:28,305 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 08:24:28,307 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 08:24:28,307 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 08:24:28,309 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 08:24:28,311 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 08:24:28,312 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 08:24:28,314 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 08:24:28,315 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 08:24:28,317 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 08:24:28,320 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 08:24:28,339 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 08:24:28,341 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 08:24:28,342 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 08:24:28,343 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 08:24:28,347 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 08:24:28,347 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 08:24:28,348 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 08:24:28,349 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 08:24:28,350 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 08:24:28,351 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 08:24:28,352 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 08:24:28,353 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 08:24:28,354 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 08:24:28,355 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 08:24:28,357 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 08:24:28,357 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 08:24:28,358 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 08:24:28,358 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 08:24:28,359 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 08:24:28,360 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 08:24:28,360 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 08:24:28,362 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 08:24:28,390 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 08:24:28,390 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 08:24:28,392 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 08:24:28,392 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 08:24:28,392 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 08:24:28,393 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 08:24:28,393 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 08:24:28,393 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 08:24:28,393 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 08:24:28,394 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 08:24:28,394 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 08:24:28,394 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 08:24:28,394 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 08:24:28,395 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 08:24:28,395 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 08:24:28,395 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 08:24:28,395 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 08:24:28,396 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 08:24:28,396 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 08:24:28,396 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 08:24:28,397 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 08:24:28,397 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 08:24:28,397 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 08:24:28,398 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 08:24:28,398 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 08:24:28,398 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 08:24:28,398 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 08:24:28,399 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 08:24:28,399 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 08:24:28,399 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 08:24:28,771 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 08:24:28,831 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 08:24:28,836 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 08:24:28,838 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 08:24:28,839 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 08:24:28,840 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label55.c [2020-10-29 08:24:28,925 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3a637ed37/bf89b4e1f76144f18e39c8d730136fe2/FLAGba8254a18 [2020-10-29 08:24:29,867 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 08:24:29,868 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label55.c [2020-10-29 08:24:29,908 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3a637ed37/bf89b4e1f76144f18e39c8d730136fe2/FLAGba8254a18 [2020-10-29 08:24:30,370 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3a637ed37/bf89b4e1f76144f18e39c8d730136fe2 [2020-10-29 08:24:30,376 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 08:24:30,386 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 08:24:30,390 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 08:24:30,390 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 08:24:30,394 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 08:24:30,395 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:24:30" (1/1) ... [2020-10-29 08:24:30,404 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69f89dcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:24:30, skipping insertion in model container [2020-10-29 08:24:30,404 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:24:30" (1/1) ... [2020-10-29 08:24:30,415 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 08:24:30,547 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 08:24:31,773 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:24:31,792 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 08:24:32,348 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:24:32,379 INFO L208 MainTranslator]: Completed translation [2020-10-29 08:24:32,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:24:32 WrapperNode [2020-10-29 08:24:32,380 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 08:24:32,381 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 08:24:32,382 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 08:24:32,383 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 08:24:32,398 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:24:32" (1/1) ... [2020-10-29 08:24:32,400 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:24:32" (1/1) ... [2020-10-29 08:24:32,475 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:24:32" (1/1) ... [2020-10-29 08:24:32,476 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:24:32" (1/1) ... [2020-10-29 08:24:32,594 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:24:32" (1/1) ... [2020-10-29 08:24:32,633 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:24:32" (1/1) ... [2020-10-29 08:24:32,668 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:24:32" (1/1) ... [2020-10-29 08:24:32,707 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 08:24:32,708 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 08:24:32,708 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 08:24:32,709 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 08:24:32,710 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:24:32" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 08:24:32,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 08:24:32,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 08:24:32,797 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 08:24:32,798 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 08:24:32,798 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 08:24:32,798 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 08:24:32,798 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 08:24:32,798 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 08:24:32,799 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 08:24:32,799 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 08:24:32,799 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 08:24:32,799 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 08:24:32,799 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 08:24:32,799 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 08:24:32,800 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 08:24:32,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 08:24:32,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 08:24:32,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 08:24:32,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 08:24:32,801 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 08:24:32,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 08:24:42,408 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 08:24:42,408 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 08:24:42,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:24:42 BoogieIcfgContainer [2020-10-29 08:24:42,411 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 08:24:42,414 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 08:24:42,414 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 08:24:42,418 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 08:24:42,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 08:24:30" (1/3) ... [2020-10-29 08:24:42,419 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fc15454 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:24:42, skipping insertion in model container [2020-10-29 08:24:42,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:24:32" (2/3) ... [2020-10-29 08:24:42,420 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fc15454 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:24:42, skipping insertion in model container [2020-10-29 08:24:42,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:24:42" (3/3) ... [2020-10-29 08:24:42,422 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem17_label55.c [2020-10-29 08:24:42,437 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 08:24:42,444 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 08:24:42,459 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 08:24:42,495 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 08:24:42,495 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 08:24:42,495 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 08:24:42,496 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 08:24:42,496 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 08:24:42,496 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 08:24:42,496 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 08:24:42,496 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 08:24:42,529 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states. [2020-10-29 08:24:42,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-29 08:24:42,536 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:24:42,537 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:24:42,537 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:24:42,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:24:42,544 INFO L82 PathProgramCache]: Analyzing trace with hash -1310069814, now seen corresponding path program 1 times [2020-10-29 08:24:42,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:24:42,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1150355937] [2020-10-29 08:24:42,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:24:42,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:24:42,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:43,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:24:43,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 08:24:43,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:24:43,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 529 [2020-10-29 08:24:43,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:24:43,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:24:43,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:24:43,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:24:43,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 08:24:43,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 08:24:43,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:24:43,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:24:43,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:43,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:24:43,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:24:43,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:24:43,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-29 08:24:43,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:24:43,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:24:43,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:24:43,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:24:43,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:24:43,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:24:43,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:24:43,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1150355937] [2020-10-29 08:24:43,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:24:43,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 08:24:43,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772240030] [2020-10-29 08:24:43,563 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 08:24:43,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:24:43,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 08:24:43,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 08:24:43,591 INFO L87 Difference]: Start difference. First operand 607 states. Second operand 4 states. [2020-10-29 08:24:55,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:24:55,398 INFO L93 Difference]: Finished difference Result 1694 states and 3092 transitions. [2020-10-29 08:24:55,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:24:55,401 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-10-29 08:24:55,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:24:55,427 INFO L225 Difference]: With dead ends: 1694 [2020-10-29 08:24:55,428 INFO L226 Difference]: Without dead ends: 1010 [2020-10-29 08:24:55,446 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:24:55,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1010 states. [2020-10-29 08:24:55,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1010 to 992. [2020-10-29 08:24:55,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 992 states. [2020-10-29 08:24:55,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 992 states to 992 states and 1527 transitions. [2020-10-29 08:24:55,579 INFO L78 Accepts]: Start accepts. Automaton has 992 states and 1527 transitions. Word has length 18 [2020-10-29 08:24:55,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:24:55,579 INFO L481 AbstractCegarLoop]: Abstraction has 992 states and 1527 transitions. [2020-10-29 08:24:55,580 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 08:24:55,580 INFO L276 IsEmpty]: Start isEmpty. Operand 992 states and 1527 transitions. [2020-10-29 08:24:55,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-29 08:24:55,584 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:24:55,585 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 08:24:55,585 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 08:24:55,585 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:24:55,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:24:55,586 INFO L82 PathProgramCache]: Analyzing trace with hash 1984119178, now seen corresponding path program 1 times [2020-10-29 08:24:55,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:24:55,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1214525738] [2020-10-29 08:24:55,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:24:55,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:24:55,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:56,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:57,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:24:57,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-29 08:24:57,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:24:57,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1567 [2020-10-29 08:24:57,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:24:57,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:24:57,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:24:57,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:24:57,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 08:24:57,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 08:24:57,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:24:57,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:24:57,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:57,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:24:57,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:24:57,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:24:57,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 08:24:57,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:24:57,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:24:57,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:24:57,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:24:57,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:24:57,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:24:57,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:24:57,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:24:57,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:57,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:24:57,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 08:24:57,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:24:57,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-29 08:24:57,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:24:57,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:24:57,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:24:57,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:24:57,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 08:24:57,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:24:57,766 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:24:57,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1214525738] [2020-10-29 08:24:57,767 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:24:57,767 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 08:24:57,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41397301] [2020-10-29 08:24:57,771 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:24:57,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:24:57,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:24:57,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:24:57,777 INFO L87 Difference]: Start difference. First operand 992 states and 1527 transitions. Second operand 7 states. [2020-10-29 08:25:14,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:25:14,941 INFO L93 Difference]: Finished difference Result 2448 states and 3891 transitions. [2020-10-29 08:25:14,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 08:25:14,942 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 89 [2020-10-29 08:25:14,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:25:14,949 INFO L225 Difference]: With dead ends: 2448 [2020-10-29 08:25:14,950 INFO L226 Difference]: Without dead ends: 1462 [2020-10-29 08:25:14,954 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 08:25:14,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1462 states. [2020-10-29 08:25:15,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1462 to 1433. [2020-10-29 08:25:15,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1433 states. [2020-10-29 08:25:15,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1433 states to 1433 states and 1859 transitions. [2020-10-29 08:25:15,035 INFO L78 Accepts]: Start accepts. Automaton has 1433 states and 1859 transitions. Word has length 89 [2020-10-29 08:25:15,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:25:15,036 INFO L481 AbstractCegarLoop]: Abstraction has 1433 states and 1859 transitions. [2020-10-29 08:25:15,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:25:15,036 INFO L276 IsEmpty]: Start isEmpty. Operand 1433 states and 1859 transitions. [2020-10-29 08:25:15,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-29 08:25:15,039 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:25:15,039 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 08:25:15,040 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 08:25:15,040 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:25:15,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:25:15,041 INFO L82 PathProgramCache]: Analyzing trace with hash 222658647, now seen corresponding path program 1 times [2020-10-29 08:25:15,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:25:15,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1540051168] [2020-10-29 08:25:15,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:25:15,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:25:15,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:15,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:25:15,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-29 08:25:15,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:25:15,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 308 [2020-10-29 08:25:15,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:25:15,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:25:15,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:25:15,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-29 08:25:15,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 08:25:15,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:25:15,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:25:15,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:25:15,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:15,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:25:15,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:25:15,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:25:15,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 08:25:15,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:25:15,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:25:15,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:25:15,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:25:15,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:25:15,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:25:15,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:25:15,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:25:15,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:15,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:25:15,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 08:25:15,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:25:15,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-29 08:25:15,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:25:15,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:25:15,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:25:15,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:25:15,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-29 08:25:15,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:25:15,738 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:25:15,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1540051168] [2020-10-29 08:25:15,739 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:25:15,739 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 08:25:15,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283475119] [2020-10-29 08:25:15,740 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 08:25:15,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:25:15,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 08:25:15,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:25:15,741 INFO L87 Difference]: Start difference. First operand 1433 states and 1859 transitions. Second operand 5 states. [2020-10-29 08:25:31,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:25:31,188 INFO L93 Difference]: Finished difference Result 3334 states and 4575 transitions. [2020-10-29 08:25:31,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:25:31,191 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 92 [2020-10-29 08:25:31,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:25:31,205 INFO L225 Difference]: With dead ends: 3334 [2020-10-29 08:25:31,206 INFO L226 Difference]: Without dead ends: 1894 [2020-10-29 08:25:31,210 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 08:25:31,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1894 states. [2020-10-29 08:25:31,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1894 to 1884. [2020-10-29 08:25:31,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1884 states. [2020-10-29 08:25:31,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1884 states to 1884 states and 2302 transitions. [2020-10-29 08:25:31,276 INFO L78 Accepts]: Start accepts. Automaton has 1884 states and 2302 transitions. Word has length 92 [2020-10-29 08:25:31,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:25:31,277 INFO L481 AbstractCegarLoop]: Abstraction has 1884 states and 2302 transitions. [2020-10-29 08:25:31,277 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 08:25:31,277 INFO L276 IsEmpty]: Start isEmpty. Operand 1884 states and 2302 transitions. [2020-10-29 08:25:31,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-29 08:25:31,282 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:25:31,282 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 08:25:31,282 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 08:25:31,282 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:25:31,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:25:31,283 INFO L82 PathProgramCache]: Analyzing trace with hash 1153678342, now seen corresponding path program 1 times [2020-10-29 08:25:31,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:25:31,284 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1898765128] [2020-10-29 08:25:31,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:25:31,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:25:31,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:31,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:33,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:25:33,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-29 08:25:33,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:25:33,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1658 [2020-10-29 08:25:33,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:25:33,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:25:33,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:25:33,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-29 08:25:33,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 08:25:33,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:25:33,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:25:33,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:25:33,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:33,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:25:33,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:25:33,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:25:33,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 08:25:33,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:25:33,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:25:33,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:25:33,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:25:33,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:25:33,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:25:33,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:25:33,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:25:33,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:33,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:25:33,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:25:33,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:25:33,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-29 08:25:33,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:25:33,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:25:33,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:25:33,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:25:33,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 08:25:33,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:25:33,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:25:33,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:25:33,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:33,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:25:33,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 08:25:33,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:25:33,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-10-29 08:25:33,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:25:33,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:25:33,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:25:33,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:25:33,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 08:25:33,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:25:33,840 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 90 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 08:25:33,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1898765128] [2020-10-29 08:25:33,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:25:33,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:25:33,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103676626] [2020-10-29 08:25:33,845 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:25:33,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:25:33,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:25:33,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:25:33,847 INFO L87 Difference]: Start difference. First operand 1884 states and 2302 transitions. Second operand 7 states. [2020-10-29 08:25:48,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:25:48,772 INFO L93 Difference]: Finished difference Result 4253 states and 5497 transitions. [2020-10-29 08:25:48,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:25:48,773 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 178 [2020-10-29 08:25:48,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:25:48,791 INFO L225 Difference]: With dead ends: 4253 [2020-10-29 08:25:48,791 INFO L226 Difference]: Without dead ends: 2808 [2020-10-29 08:25:48,797 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:25:48,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2808 states. [2020-10-29 08:25:48,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2808 to 2792. [2020-10-29 08:25:48,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2792 states. [2020-10-29 08:25:48,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2792 states to 2792 states and 3410 transitions. [2020-10-29 08:25:48,899 INFO L78 Accepts]: Start accepts. Automaton has 2792 states and 3410 transitions. Word has length 178 [2020-10-29 08:25:48,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:25:48,901 INFO L481 AbstractCegarLoop]: Abstraction has 2792 states and 3410 transitions. [2020-10-29 08:25:48,901 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:25:48,901 INFO L276 IsEmpty]: Start isEmpty. Operand 2792 states and 3410 transitions. [2020-10-29 08:25:48,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-29 08:25:48,905 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:25:48,905 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:25:48,905 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 08:25:48,905 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:25:48,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:25:48,906 INFO L82 PathProgramCache]: Analyzing trace with hash -931225182, now seen corresponding path program 1 times [2020-10-29 08:25:48,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:25:48,907 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [966606220] [2020-10-29 08:25:48,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:25:48,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:25:49,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:49,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:50,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:54,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:25:54,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-29 08:25:54,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:25:54,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5055 [2020-10-29 08:25:54,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:25:54,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:25:54,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 08:25:54,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:25:54,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-29 08:25:54,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:25:54,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:25:54,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:25:54,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:54,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:25:54,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:25:54,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:25:54,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 08:25:54,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:25:54,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:25:54,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:25:54,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:25:54,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:25:54,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:25:54,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:25:54,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:25:54,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:54,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:25:54,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:25:54,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:25:54,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 443 [2020-10-29 08:25:54,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:25:54,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:25:54,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 08:25:54,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:25:54,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 08:25:54,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:25:54,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:25:55,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:25:55,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:55,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:25:55,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 08:25:55,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:25:55,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 362 [2020-10-29 08:25:55,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:25:55,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:25:55,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:25:55,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:25:55,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 08:25:55,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:25:55,737 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 24 proven. 70 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 08:25:55,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [966606220] [2020-10-29 08:25:55,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:25:55,739 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 08:25:55,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656464058] [2020-10-29 08:25:55,741 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 08:25:55,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:25:55,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 08:25:55,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-29 08:25:55,742 INFO L87 Difference]: Start difference. First operand 2792 states and 3410 transitions. Second operand 10 states. [2020-10-29 08:26:20,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:26:20,918 INFO L93 Difference]: Finished difference Result 7992 states and 10199 transitions. [2020-10-29 08:26:20,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 08:26:20,920 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 180 [2020-10-29 08:26:20,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:26:20,963 INFO L225 Difference]: With dead ends: 7992 [2020-10-29 08:26:20,963 INFO L226 Difference]: Without dead ends: 5639 [2020-10-29 08:26:20,973 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=139, Invalid=461, Unknown=0, NotChecked=0, Total=600 [2020-10-29 08:26:20,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5639 states. [2020-10-29 08:26:21,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5639 to 5571. [2020-10-29 08:26:21,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5571 states. [2020-10-29 08:26:21,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5571 states to 5571 states and 6880 transitions. [2020-10-29 08:26:21,194 INFO L78 Accepts]: Start accepts. Automaton has 5571 states and 6880 transitions. Word has length 180 [2020-10-29 08:26:21,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:26:21,195 INFO L481 AbstractCegarLoop]: Abstraction has 5571 states and 6880 transitions. [2020-10-29 08:26:21,195 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 08:26:21,195 INFO L276 IsEmpty]: Start isEmpty. Operand 5571 states and 6880 transitions. [2020-10-29 08:26:21,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-10-29 08:26:21,199 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:26:21,199 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:26:21,200 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 08:26:21,200 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:26:21,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:26:21,201 INFO L82 PathProgramCache]: Analyzing trace with hash 2103892056, now seen corresponding path program 1 times [2020-10-29 08:26:21,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:26:21,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2146621514] [2020-10-29 08:26:21,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:26:21,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:26:21,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:26:21,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:26:22,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:26:22,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-10-29 08:26:22,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:26:22,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1518 [2020-10-29 08:26:22,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:26:22,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:26:22,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:26:22,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-29 08:26:22,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-29 08:26:22,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:26:23,012 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 08:26:23,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:26:23,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:26:23,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:26:23,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:26:23,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:26:23,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:26:23,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 08:26:23,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:26:23,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:26:23,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:26:23,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:26:23,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:26:23,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:26:23,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:26:23,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:26:23,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:26:23,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:26:23,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:26:23,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:26:23,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-29 08:26:23,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:26:23,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:26:23,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:26:23,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:26:23,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 08:26:23,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:26:23,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:26:23,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:26:23,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:26:23,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:26:23,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:26:23,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 08:26:23,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:26:23,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 253 [2020-10-29 08:26:23,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:26:23,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:26:23,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:26:23,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:26:23,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 08:26:23,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 08:26:23,637 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-29 08:26:23,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2146621514] [2020-10-29 08:26:23,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:26:23,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 08:26:23,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090105684] [2020-10-29 08:26:23,641 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 08:26:23,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:26:23,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 08:26:23,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:26:23,643 INFO L87 Difference]: Start difference. First operand 5571 states and 6880 transitions. Second operand 5 states. [2020-10-29 08:26:39,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:26:39,197 INFO L93 Difference]: Finished difference Result 11143 states and 14117 transitions. [2020-10-29 08:26:39,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:26:39,200 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 191 [2020-10-29 08:26:39,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:26:39,236 INFO L225 Difference]: With dead ends: 11143 [2020-10-29 08:26:39,236 INFO L226 Difference]: Without dead ends: 6011 [2020-10-29 08:26:39,251 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 08:26:39,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6011 states. [2020-10-29 08:26:39,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6011 to 6004. [2020-10-29 08:26:39,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6004 states. [2020-10-29 08:26:39,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6004 states to 6004 states and 7487 transitions. [2020-10-29 08:26:39,437 INFO L78 Accepts]: Start accepts. Automaton has 6004 states and 7487 transitions. Word has length 191 [2020-10-29 08:26:39,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:26:39,438 INFO L481 AbstractCegarLoop]: Abstraction has 6004 states and 7487 transitions. [2020-10-29 08:26:39,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 08:26:39,438 INFO L276 IsEmpty]: Start isEmpty. Operand 6004 states and 7487 transitions. [2020-10-29 08:26:39,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-10-29 08:26:39,443 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:26:39,443 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:26:39,444 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 08:26:39,444 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:26:39,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:26:39,444 INFO L82 PathProgramCache]: Analyzing trace with hash -991863235, now seen corresponding path program 1 times [2020-10-29 08:26:39,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:26:39,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [805717721] [2020-10-29 08:26:39,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:26:39,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:26:39,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:26:40,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:26:43,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:26:43,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-29 08:26:43,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:26:43,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4040 [2020-10-29 08:26:43,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:26:43,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:26:43,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 08:26:43,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:26:43,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 173 [2020-10-29 08:26:43,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:26:43,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:26:43,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:26:43,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:26:43,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:26:43,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:26:43,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:26:43,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 08:26:43,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:26:43,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:26:43,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:26:43,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:26:43,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:26:43,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:26:43,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:26:43,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:26:43,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:26:44,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:26:44,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:26:44,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:26:44,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 279 [2020-10-29 08:26:44,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:26:44,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:26:44,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 08:26:44,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:26:44,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 08:26:44,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 08:26:44,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:26:44,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:26:44,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:26:44,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:26:44,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 08:26:44,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:26:44,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-29 08:26:44,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:26:44,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:26:44,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:26:44,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:26:44,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 08:26:44,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:26:44,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-10-29 08:26:44,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:26:44,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:26:44,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:26:44,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 08:26:44,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:26:44,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-29 08:26:44,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:26:44,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:26:44,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:26:44,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-29 08:26:44,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:26:44,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:26:44,754 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 35 proven. 145 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-10-29 08:26:44,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [805717721] [2020-10-29 08:26:44,755 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:26:44,755 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 08:26:44,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675577004] [2020-10-29 08:26:44,757 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 08:26:44,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:26:44,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 08:26:44,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-29 08:26:44,759 INFO L87 Difference]: Start difference. First operand 6004 states and 7487 transitions. Second operand 9 states. [2020-10-29 08:26:45,009 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2020-10-29 08:27:09,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:27:09,069 INFO L93 Difference]: Finished difference Result 16306 states and 22103 transitions. [2020-10-29 08:27:09,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 08:27:09,076 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 258 [2020-10-29 08:27:09,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:27:09,147 INFO L225 Difference]: With dead ends: 16306 [2020-10-29 08:27:09,147 INFO L226 Difference]: Without dead ends: 9845 [2020-10-29 08:27:09,174 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2020-10-29 08:27:09,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9845 states. [2020-10-29 08:27:09,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9845 to 9663. [2020-10-29 08:27:09,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9663 states. [2020-10-29 08:27:09,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9663 states to 9663 states and 11696 transitions. [2020-10-29 08:27:09,575 INFO L78 Accepts]: Start accepts. Automaton has 9663 states and 11696 transitions. Word has length 258 [2020-10-29 08:27:09,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:27:09,577 INFO L481 AbstractCegarLoop]: Abstraction has 9663 states and 11696 transitions. [2020-10-29 08:27:09,577 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 08:27:09,577 INFO L276 IsEmpty]: Start isEmpty. Operand 9663 states and 11696 transitions. [2020-10-29 08:27:09,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2020-10-29 08:27:09,583 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:27:09,583 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-29 08:27:09,584 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 08:27:09,584 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:27:09,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:27:09,585 INFO L82 PathProgramCache]: Analyzing trace with hash 192227644, now seen corresponding path program 1 times [2020-10-29 08:27:09,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:27:09,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [694302754] [2020-10-29 08:27:09,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:27:09,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:27:09,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:27:09,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:27:12,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:27:12,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:27:14,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:27:14,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 278 [2020-10-29 08:27:14,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:27:14,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4781 [2020-10-29 08:27:14,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:27:14,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:27:14,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 08:27:14,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:27:14,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-29 08:27:14,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:27:14,696 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 08:27:14,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:27:14,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:27:14,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:27:14,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:27:14,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:27:14,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:27:14,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 08:27:14,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:27:14,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:27:14,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:27:14,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:27:14,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:27:14,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:27:14,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:27:14,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:27:14,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:27:14,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:27:14,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:27:14,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:27:14,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-10-29 08:27:14,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:27:14,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:27:14,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 08:27:14,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:27:14,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 08:27:14,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:27:15,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:27:15,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:27:15,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:27:15,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:27:15,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 08:27:15,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:27:15,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-29 08:27:15,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:27:15,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:27:15,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:27:15,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:27:15,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-29 08:27:15,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:27:15,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-29 08:27:15,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:27:15,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:27:15,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:27:15,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 08:27:15,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:27:15,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-29 08:27:15,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:27:15,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:27:15,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:27:15,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:27:15,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 08:27:15,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:27:15,659 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 79 proven. 164 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-29 08:27:15,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [694302754] [2020-10-29 08:27:15,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:27:15,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 08:27:15,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368092867] [2020-10-29 08:27:15,661 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 08:27:15,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:27:15,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 08:27:15,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-29 08:27:15,662 INFO L87 Difference]: Start difference. First operand 9663 states and 11696 transitions. Second operand 10 states. [2020-10-29 08:27:15,816 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 08:27:22,120 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2020-10-29 08:27:36,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:27:36,265 INFO L93 Difference]: Finished difference Result 23177 states and 30318 transitions. [2020-10-29 08:27:36,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 08:27:36,267 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 262 [2020-10-29 08:27:36,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:27:36,328 INFO L225 Difference]: With dead ends: 23177 [2020-10-29 08:27:36,328 INFO L226 Difference]: Without dead ends: 13500 [2020-10-29 08:27:36,356 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2020-10-29 08:27:36,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13500 states. [2020-10-29 08:27:36,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13500 to 13237. [2020-10-29 08:27:36,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13237 states. [2020-10-29 08:27:36,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13237 states to 13237 states and 15735 transitions. [2020-10-29 08:27:36,728 INFO L78 Accepts]: Start accepts. Automaton has 13237 states and 15735 transitions. Word has length 262 [2020-10-29 08:27:36,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:27:36,728 INFO L481 AbstractCegarLoop]: Abstraction has 13237 states and 15735 transitions. [2020-10-29 08:27:36,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 08:27:36,729 INFO L276 IsEmpty]: Start isEmpty. Operand 13237 states and 15735 transitions. [2020-10-29 08:27:36,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2020-10-29 08:27:36,733 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:27:36,734 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-29 08:27:36,734 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 08:27:36,734 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:27:36,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:27:36,735 INFO L82 PathProgramCache]: Analyzing trace with hash -1769136547, now seen corresponding path program 1 times [2020-10-29 08:27:36,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:27:36,740 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [399830093] [2020-10-29 08:27:36,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:27:36,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:27:36,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:27:36,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:27:37,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:27:38,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:27:41,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:27:41,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 301 [2020-10-29 08:27:41,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:27:41,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-29 08:27:41,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:27:41,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:27:41,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:27:41,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-29 08:27:41,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-29 08:27:41,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:27:42,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:27:42,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:27:42,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:27:42,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:27:42,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:27:42,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:27:42,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 08:27:42,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:27:42,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:27:42,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:27:42,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:27:42,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:27:42,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:27:42,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:27:42,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:27:42,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:27:42,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:27:42,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:27:42,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:27:42,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-29 08:27:42,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:27:42,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:27:42,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:27:42,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:27:42,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 08:27:42,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:27:42,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:27:42,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:27:42,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:27:42,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:27:42,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 08:27:42,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:27:42,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 340 [2020-10-29 08:27:42,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:27:42,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:27:42,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:27:42,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:27:42,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-29 08:27:42,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:27:43,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-29 08:27:43,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:27:43,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:27:43,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:27:43,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 08:27:43,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:27:43,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-29 08:27:43,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:27:43,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:27:43,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:27:43,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-29 08:27:43,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:27:43,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:27:43,400 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 118 proven. 70 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-29 08:27:43,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [399830093] [2020-10-29 08:27:43,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:27:43,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 08:27:43,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568661189] [2020-10-29 08:27:43,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 08:27:43,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:27:43,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 08:27:43,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:27:43,404 INFO L87 Difference]: Start difference. First operand 13237 states and 15735 transitions. Second operand 8 states. [2020-10-29 08:28:06,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:28:06,641 INFO L93 Difference]: Finished difference Result 27901 states and 33314 transitions. [2020-10-29 08:28:06,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:28:06,645 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 285 [2020-10-29 08:28:06,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:28:06,703 INFO L225 Difference]: With dead ends: 27901 [2020-10-29 08:28:06,704 INFO L226 Difference]: Without dead ends: 15538 [2020-10-29 08:28:06,731 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-29 08:28:06,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15538 states. [2020-10-29 08:28:07,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15538 to 15443. [2020-10-29 08:28:07,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15443 states. [2020-10-29 08:28:07,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15443 states to 15443 states and 18141 transitions. [2020-10-29 08:28:07,169 INFO L78 Accepts]: Start accepts. Automaton has 15443 states and 18141 transitions. Word has length 285 [2020-10-29 08:28:07,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:28:07,169 INFO L481 AbstractCegarLoop]: Abstraction has 15443 states and 18141 transitions. [2020-10-29 08:28:07,169 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 08:28:07,169 INFO L276 IsEmpty]: Start isEmpty. Operand 15443 states and 18141 transitions. [2020-10-29 08:28:07,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2020-10-29 08:28:07,177 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:28:07,177 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-29 08:28:07,178 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 08:28:07,178 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:28:07,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:28:07,179 INFO L82 PathProgramCache]: Analyzing trace with hash 534748085, now seen corresponding path program 1 times [2020-10-29 08:28:07,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:28:07,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [225168788] [2020-10-29 08:28:07,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:28:07,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:28:07,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:28:07,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:28:08,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:28:12,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:28:12,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 382 [2020-10-29 08:28:12,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:28:12,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-29 08:28:12,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:28:12,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:28:12,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:28:12,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-29 08:28:12,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-29 08:28:12,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:28:12,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:28:12,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:28:12,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:28:12,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:28:12,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:28:12,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:28:12,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 08:28:12,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:28:12,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:28:12,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:28:12,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:28:12,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:28:12,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-29 08:28:12,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:28:12,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:28:12,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:28:12,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:28:12,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:28:12,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:28:12,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 08:28:12,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:28:12,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:28:12,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:28:12,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:28:12,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:28:12,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:28:12,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:28:12,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:28:12,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:28:12,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:28:12,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 08:28:12,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:28:12,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-29 08:28:12,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:28:12,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:28:12,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:28:12,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:28:12,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 08:28:12,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:28:12,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-29 08:28:12,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:28:12,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:28:13,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:28:13,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-29 08:28:13,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:28:13,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-29 08:28:13,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:28:13,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:28:13,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:28:13,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:28:13,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-29 08:28:13,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:28:13,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2020-10-29 08:28:13,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:28:13,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:28:13,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:28:13,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 08:28:13,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:28:13,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-29 08:28:13,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:28:13,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:28:13,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:28:13,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-29 08:28:13,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:28:13,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:28:13,257 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 220 proven. 70 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2020-10-29 08:28:13,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [225168788] [2020-10-29 08:28:13,258 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:28:13,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:28:13,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768516449] [2020-10-29 08:28:13,259 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:28:13,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:28:13,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:28:13,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:28:13,260 INFO L87 Difference]: Start difference. First operand 15443 states and 18141 transitions. Second operand 7 states.