/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/Problem16_label28.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 08:02:12,497 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 08:02:12,500 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 08:02:12,556 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 08:02:12,556 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 08:02:12,562 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 08:02:12,565 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 08:02:12,570 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 08:02:12,573 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 08:02:12,579 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 08:02:12,580 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 08:02:12,582 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 08:02:12,582 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 08:02:12,586 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 08:02:12,590 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 08:02:12,593 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 08:02:12,594 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 08:02:12,598 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 08:02:12,608 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 08:02:12,615 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 08:02:12,618 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 08:02:12,620 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 08:02:12,621 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 08:02:12,624 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 08:02:12,635 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 08:02:12,635 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 08:02:12,636 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 08:02:12,639 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 08:02:12,640 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 08:02:12,641 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 08:02:12,641 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 08:02:12,642 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 08:02:12,644 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 08:02:12,645 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 08:02:12,647 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 08:02:12,647 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 08:02:12,648 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 08:02:12,648 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 08:02:12,649 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 08:02:12,650 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 08:02:12,650 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 08:02:12,659 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 08:02:12,710 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 08:02:12,710 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 08:02:12,712 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 08:02:12,712 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 08:02:12,713 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 08:02:12,713 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 08:02:12,713 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 08:02:12,713 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 08:02:12,713 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 08:02:12,714 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 08:02:12,714 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 08:02:12,717 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 08:02:12,717 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 08:02:12,717 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 08:02:12,718 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 08:02:12,718 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 08:02:12,718 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 08:02:12,718 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 08:02:12,718 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 08:02:12,718 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 08:02:12,718 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 08:02:12,719 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 08:02:12,719 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 08:02:12,719 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 08:02:12,719 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 08:02:12,719 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 08:02:12,719 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 08:02:12,720 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 08:02:12,720 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 08:02:12,720 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 08:02:13,147 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 08:02:13,206 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 08:02:13,210 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 08:02:13,211 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 08:02:13,212 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 08:02:13,213 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label28.c [2020-10-29 08:02:13,324 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d9e00e3cc/f4ccfc7b070a45fd8d592fd6321dfde1/FLAGd09bb6e14 [2020-10-29 08:02:14,284 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 08:02:14,285 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label28.c [2020-10-29 08:02:14,307 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d9e00e3cc/f4ccfc7b070a45fd8d592fd6321dfde1/FLAGd09bb6e14 [2020-10-29 08:02:14,374 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d9e00e3cc/f4ccfc7b070a45fd8d592fd6321dfde1 [2020-10-29 08:02:14,379 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 08:02:14,386 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 08:02:14,387 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 08:02:14,388 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 08:02:14,392 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 08:02:14,393 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:02:14" (1/1) ... [2020-10-29 08:02:14,396 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e8c2f7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:02:14, skipping insertion in model container [2020-10-29 08:02:14,397 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:02:14" (1/1) ... [2020-10-29 08:02:14,405 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 08:02:14,472 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 08:02:15,254 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:02:15,266 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 08:02:15,536 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:02:15,560 INFO L208 MainTranslator]: Completed translation [2020-10-29 08:02:15,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:02:15 WrapperNode [2020-10-29 08:02:15,561 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 08:02:15,563 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 08:02:15,563 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 08:02:15,563 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 08:02:15,577 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:02:15" (1/1) ... [2020-10-29 08:02:15,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:02:15" (1/1) ... [2020-10-29 08:02:15,639 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:02:15" (1/1) ... [2020-10-29 08:02:15,639 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:02:15" (1/1) ... [2020-10-29 08:02:15,750 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:02:15" (1/1) ... [2020-10-29 08:02:15,782 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:02:15" (1/1) ... [2020-10-29 08:02:15,803 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:02:15" (1/1) ... [2020-10-29 08:02:15,821 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 08:02:15,822 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 08:02:15,823 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 08:02:15,823 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 08:02:15,824 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:02:15" (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 08:02:15,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 08:02:15,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 08:02:15,910 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 08:02:15,910 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 08:02:15,911 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 08:02:15,911 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 08:02:15,911 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 08:02:15,911 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 08:02:15,911 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 08:02:15,912 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 08:02:15,912 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 08:02:15,912 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 08:02:15,912 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 08:02:15,912 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 08:02:15,912 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 08:02:15,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 08:02:15,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 08:02:15,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 08:02:15,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 08:02:15,913 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 08:02:15,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 08:02:18,459 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 08:02:18,460 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 08:02:18,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:02:18 BoogieIcfgContainer [2020-10-29 08:02:18,464 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 08:02:18,468 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 08:02:18,468 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 08:02:18,472 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 08:02:18,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 08:02:14" (1/3) ... [2020-10-29 08:02:18,474 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@431731f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:02:18, skipping insertion in model container [2020-10-29 08:02:18,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:02:15" (2/3) ... [2020-10-29 08:02:18,475 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@431731f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:02:18, skipping insertion in model container [2020-10-29 08:02:18,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:02:18" (3/3) ... [2020-10-29 08:02:18,477 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem16_label28.c [2020-10-29 08:02:18,492 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 08:02:18,499 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 08:02:18,515 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 08:02:18,566 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 08:02:18,566 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 08:02:18,566 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 08:02:18,566 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 08:02:18,566 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 08:02:18,567 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 08:02:18,567 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 08:02:18,567 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 08:02:18,612 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states. [2020-10-29 08:02:18,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-29 08:02:18,628 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:02:18,629 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:02:18,630 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:02:18,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:02:18,639 INFO L82 PathProgramCache]: Analyzing trace with hash 780759676, now seen corresponding path program 1 times [2020-10-29 08:02:18,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:02:18,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [440119565] [2020-10-29 08:02:18,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:02:18,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:02:18,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:19,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:02:19,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-29 08:02:19,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:02:19,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 657 [2020-10-29 08:02:19,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:02:19,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:02:19,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:02:19,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:02:19,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 08:02:19,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 08:02:19,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:02:19,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:02:19,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:19,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:02:19,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:02:19,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:02:19,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 08:02:19,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:02:19,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:02:19,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:02:19,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:02:19,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:02:19,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:02:19,875 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 08:02:19,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [440119565] [2020-10-29 08:02:19,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:02:19,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 08:02:19,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61276257] [2020-10-29 08:02:19,884 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 08:02:19,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:02:19,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 08:02:19,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:02:19,903 INFO L87 Difference]: Start difference. First operand 413 states. Second operand 5 states. [2020-10-29 08:02:27,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:02:27,076 INFO L93 Difference]: Finished difference Result 1520 states and 2854 transitions. [2020-10-29 08:02:27,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 08:02:27,079 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 73 [2020-10-29 08:02:27,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:02:27,129 INFO L225 Difference]: With dead ends: 1520 [2020-10-29 08:02:27,130 INFO L226 Difference]: Without dead ends: 1039 [2020-10-29 08:02:27,146 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:02:27,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1039 states. [2020-10-29 08:02:27,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1039 to 1032. [2020-10-29 08:02:27,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1032 states. [2020-10-29 08:02:27,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1032 states to 1032 states and 1643 transitions. [2020-10-29 08:02:27,313 INFO L78 Accepts]: Start accepts. Automaton has 1032 states and 1643 transitions. Word has length 73 [2020-10-29 08:02:27,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:02:27,316 INFO L481 AbstractCegarLoop]: Abstraction has 1032 states and 1643 transitions. [2020-10-29 08:02:27,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 08:02:27,316 INFO L276 IsEmpty]: Start isEmpty. Operand 1032 states and 1643 transitions. [2020-10-29 08:02:27,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-10-29 08:02:27,341 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:02:27,342 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:02:27,342 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 08:02:27,343 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:02:27,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:02:27,343 INFO L82 PathProgramCache]: Analyzing trace with hash -1746677476, now seen corresponding path program 1 times [2020-10-29 08:02:27,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:02:27,344 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [266240733] [2020-10-29 08:02:27,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:02:27,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:02:27,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:27,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:27,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:28,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:29,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:32,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:02:32,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 269 [2020-10-29 08:02:32,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 08:02:32,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-29 08:02:32,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:02:32,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:02:32,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 08:02:32,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:02:32,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-29 08:02:32,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-29 08:02:32,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:02:32,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:02:32,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:32,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:02:32,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:02:32,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:02:32,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-29 08:02:32,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:02:32,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:02:32,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:02:32,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:02:32,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:02:32,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-29 08:02:32,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:02:32,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:02:32,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:32,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:33,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:02:33,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 08:02:33,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:02:33,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-29 08:02:33,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:02:33,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:02:33,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:02:33,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:02:33,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 08:02:33,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:02:33,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-29 08:02:33,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:02:33,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:33,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:02:33,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 08:02:33,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:02:33,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-29 08:02:33,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:02:33,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:02:33,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:02:33,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:02:33,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-29 08:02:33,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:02:33,447 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 199 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 08:02:33,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [266240733] [2020-10-29 08:02:33,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:02:33,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 08:02:33,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411055843] [2020-10-29 08:02:33,451 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 08:02:33,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:02:33,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 08:02:33,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:02:33,455 INFO L87 Difference]: Start difference. First operand 1032 states and 1643 transitions. Second operand 8 states. [2020-10-29 08:02:39,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:02:39,230 INFO L93 Difference]: Finished difference Result 2771 states and 4529 transitions. [2020-10-29 08:02:39,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 08:02:39,232 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 255 [2020-10-29 08:02:39,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:02:39,251 INFO L225 Difference]: With dead ends: 2771 [2020-10-29 08:02:39,251 INFO L226 Difference]: Without dead ends: 1745 [2020-10-29 08:02:39,256 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-29 08:02:39,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1745 states. [2020-10-29 08:02:39,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1745 to 1728. [2020-10-29 08:02:39,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1728 states. [2020-10-29 08:02:39,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1728 states to 1728 states and 2599 transitions. [2020-10-29 08:02:39,362 INFO L78 Accepts]: Start accepts. Automaton has 1728 states and 2599 transitions. Word has length 255 [2020-10-29 08:02:39,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:02:39,366 INFO L481 AbstractCegarLoop]: Abstraction has 1728 states and 2599 transitions. [2020-10-29 08:02:39,366 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 08:02:39,366 INFO L276 IsEmpty]: Start isEmpty. Operand 1728 states and 2599 transitions. [2020-10-29 08:02:39,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2020-10-29 08:02:39,375 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:02:39,376 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:02:39,377 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 08:02:39,377 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:02:39,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:02:39,378 INFO L82 PathProgramCache]: Analyzing trace with hash 1949431500, now seen corresponding path program 1 times [2020-10-29 08:02:39,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:02:39,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [976187712] [2020-10-29 08:02:39,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:02:39,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:02:39,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:39,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:39,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:43,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:44,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:02:44,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 309 [2020-10-29 08:02:44,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:02:44,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 08:02:44,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:02:44,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:02:44,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:02:44,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 125 [2020-10-29 08:02:44,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-29 08:02:44,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:02:44,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:02:44,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:02:44,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:44,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:02:44,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:02:44,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:02:44,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 08:02:44,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:02:44,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:02:44,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:02:44,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:02:44,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:02:44,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 08:02:44,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:02:44,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:02:44,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:44,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:02:44,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-29 08:02:44,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:02:44,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-29 08:02:44,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:02:44,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:02:44,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:02:44,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:02:44,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-29 08:02:44,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:02:44,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-29 08:02:44,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:02:44,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:45,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:02:45,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 08:02:45,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:02:45,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-29 08:02:45,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:02:45,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:02:45,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:02:45,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:02:45,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-29 08:02:45,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-29 08:02:45,196 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 234 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 08:02:45,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [976187712] [2020-10-29 08:02:45,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:02:45,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:02:45,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036490915] [2020-10-29 08:02:45,198 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:02:45,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:02:45,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:02:45,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:02:45,203 INFO L87 Difference]: Start difference. First operand 1728 states and 2599 transitions. Second operand 7 states. [2020-10-29 08:02:50,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:02:50,562 INFO L93 Difference]: Finished difference Result 4189 states and 6334 transitions. [2020-10-29 08:02:50,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 08:02:50,563 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 295 [2020-10-29 08:02:50,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:02:50,578 INFO L225 Difference]: With dead ends: 4189 [2020-10-29 08:02:50,578 INFO L226 Difference]: Without dead ends: 2110 [2020-10-29 08:02:50,586 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-29 08:02:50,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2110 states. [2020-10-29 08:02:50,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2110 to 2078. [2020-10-29 08:02:50,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2078 states. [2020-10-29 08:02:50,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2078 states to 2078 states and 2403 transitions. [2020-10-29 08:02:50,675 INFO L78 Accepts]: Start accepts. Automaton has 2078 states and 2403 transitions. Word has length 295 [2020-10-29 08:02:50,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:02:50,677 INFO L481 AbstractCegarLoop]: Abstraction has 2078 states and 2403 transitions. [2020-10-29 08:02:50,677 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:02:50,677 INFO L276 IsEmpty]: Start isEmpty. Operand 2078 states and 2403 transitions. [2020-10-29 08:02:50,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2020-10-29 08:02:50,682 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:02:50,683 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:02:50,683 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 08:02:50,683 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:02:50,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:02:50,684 INFO L82 PathProgramCache]: Analyzing trace with hash -1565572246, now seen corresponding path program 1 times [2020-10-29 08:02:50,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:02:50,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1730235045] [2020-10-29 08:02:50,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:02:50,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:02:50,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:50,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:52,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:53,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:55,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:02:55,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 312 [2020-10-29 08:02:55,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:02:55,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 08:02:55,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:02:55,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:02:55,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:02:55,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 125 [2020-10-29 08:02:55,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 183 [2020-10-29 08:02:55,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:02:55,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:02:55,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:02:55,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:55,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:02:55,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:02:55,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:02:55,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 08:02:55,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:02:55,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:02:55,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:02:55,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:02:55,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:02:55,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:02:55,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:02:55,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:02:55,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:56,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:02:56,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-29 08:02:56,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:02:56,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-29 08:02:56,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:02:56,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:02:56,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:02:56,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:02:56,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-29 08:02:56,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:02:56,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-29 08:02:56,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:02:56,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:56,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:56,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:02:56,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 08:02:56,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:02:56,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-10-29 08:02:56,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:02:56,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:02:56,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:02:56,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:02:56,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-29 08:02:56,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:02:56,556 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 128 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-29 08:02:56,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1730235045] [2020-10-29 08:02:56,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:02:56,557 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 08:02:56,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840665430] [2020-10-29 08:02:56,558 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 08:02:56,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:02:56,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 08:02:56,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:02:56,559 INFO L87 Difference]: Start difference. First operand 2078 states and 2403 transitions. Second operand 5 states. [2020-10-29 08:02:59,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:02:59,600 INFO L93 Difference]: Finished difference Result 4161 states and 4818 transitions. [2020-10-29 08:02:59,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:02:59,604 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 298 [2020-10-29 08:02:59,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:02:59,616 INFO L225 Difference]: With dead ends: 4161 [2020-10-29 08:02:59,617 INFO L226 Difference]: Without dead ends: 2089 [2020-10-29 08:02:59,622 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 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 08:02:59,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2089 states. [2020-10-29 08:02:59,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2089 to 2078. [2020-10-29 08:02:59,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2078 states. [2020-10-29 08:02:59,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2078 states to 2078 states and 2328 transitions. [2020-10-29 08:02:59,718 INFO L78 Accepts]: Start accepts. Automaton has 2078 states and 2328 transitions. Word has length 298 [2020-10-29 08:02:59,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:02:59,719 INFO L481 AbstractCegarLoop]: Abstraction has 2078 states and 2328 transitions. [2020-10-29 08:02:59,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 08:02:59,719 INFO L276 IsEmpty]: Start isEmpty. Operand 2078 states and 2328 transitions. [2020-10-29 08:02:59,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2020-10-29 08:02:59,729 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:02:59,730 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:02:59,730 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 08:02:59,731 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:02:59,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:02:59,731 INFO L82 PathProgramCache]: Analyzing trace with hash 910037319, now seen corresponding path program 1 times [2020-10-29 08:02:59,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:02:59,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1218395385] [2020-10-29 08:02:59,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:02:59,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:02:59,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:59,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:00,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:00,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:04,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:04,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 421 [2020-10-29 08:03:04,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:03:04,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-29 08:03:04,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:04,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:04,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:03:04,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 125 [2020-10-29 08:03:04,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-29 08:03:04,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:04,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:03:04,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:04,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:04,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:04,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:03:04,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:04,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 08:03:04,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:04,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:04,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:03:04,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:03:04,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:03:04,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:04,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:03:04,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:04,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:05,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:05,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-29 08:03:05,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:05,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-29 08:03:05,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:05,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:05,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:03:05,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:03:05,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-29 08:03:05,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:03:05,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-29 08:03:05,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:05,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:05,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:05,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 08:03:05,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:05,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-29 08:03:05,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:05,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:05,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:03:05,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:03:05,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 08:03:05,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:03:05,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-10-29 08:03:05,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:05,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:05,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:05,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 08:03:05,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:05,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-29 08:03:05,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:05,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:05,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:03:05,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-29 08:03:05,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:03:05,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:03:05,896 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 306 proven. 106 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2020-10-29 08:03:05,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1218395385] [2020-10-29 08:03:05,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:03:05,897 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:03:05,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551464501] [2020-10-29 08:03:05,898 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:03:05,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:03:05,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:03:05,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:03:05,900 INFO L87 Difference]: Start difference. First operand 2078 states and 2328 transitions. Second operand 7 states. [2020-10-29 08:03:11,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:03:11,631 INFO L93 Difference]: Finished difference Result 5933 states and 6821 transitions. [2020-10-29 08:03:11,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 08:03:11,635 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 405 [2020-10-29 08:03:11,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:03:11,657 INFO L225 Difference]: With dead ends: 5933 [2020-10-29 08:03:11,658 INFO L226 Difference]: Without dead ends: 3861 [2020-10-29 08:03:11,665 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 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 08:03:11,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3861 states. [2020-10-29 08:03:11,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3861 to 3799. [2020-10-29 08:03:11,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3799 states. [2020-10-29 08:03:11,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3799 states to 3799 states and 4155 transitions. [2020-10-29 08:03:11,794 INFO L78 Accepts]: Start accepts. Automaton has 3799 states and 4155 transitions. Word has length 405 [2020-10-29 08:03:11,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:03:11,795 INFO L481 AbstractCegarLoop]: Abstraction has 3799 states and 4155 transitions. [2020-10-29 08:03:11,795 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:03:11,795 INFO L276 IsEmpty]: Start isEmpty. Operand 3799 states and 4155 transitions. [2020-10-29 08:03:11,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2020-10-29 08:03:11,809 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:03:11,811 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:03:11,811 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 08:03:11,811 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:03:11,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:03:11,812 INFO L82 PathProgramCache]: Analyzing trace with hash 1555569895, now seen corresponding path program 1 times [2020-10-29 08:03:11,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:03:11,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [599196124] [2020-10-29 08:03:11,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:03:11,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:11,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:12,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:12,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:13,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:16,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:16,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 450 [2020-10-29 08:03:16,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:03:16,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-29 08:03:16,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:16,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:16,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:03:16,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 266 [2020-10-29 08:03:16,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-29 08:03:16,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:17,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:03:17,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:17,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:17,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:17,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:03:17,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:17,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 08:03:17,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:17,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:17,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:03:17,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:03:17,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:03:17,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:17,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:03:17,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:17,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:17,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:17,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-29 08:03:17,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:17,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-29 08:03:17,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:17,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:17,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:03:17,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:03:17,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:03:17,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 08:03:17,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-29 08:03:17,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:17,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:17,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:17,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 08:03:17,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:17,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-29 08:03:17,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:17,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:17,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:03:17,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:03:17,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-29 08:03:17,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:17,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2020-10-29 08:03:17,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:17,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:17,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:17,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 08:03:17,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:17,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-29 08:03:17,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:17,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:17,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:03:17,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:03:17,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-29 08:03:17,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:17,768 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 408 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2020-10-29 08:03:17,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [599196124] [2020-10-29 08:03:17,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:03:17,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:03:17,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752666809] [2020-10-29 08:03:17,770 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:03:17,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:03:17,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:03:17,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:03:17,772 INFO L87 Difference]: Start difference. First operand 3799 states and 4155 transitions. Second operand 7 states. [2020-10-29 08:03:23,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:03:23,357 INFO L93 Difference]: Finished difference Result 7288 states and 7991 transitions. [2020-10-29 08:03:23,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 08:03:23,359 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 434 [2020-10-29 08:03:23,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:03:23,382 INFO L225 Difference]: With dead ends: 7288 [2020-10-29 08:03:23,382 INFO L226 Difference]: Without dead ends: 3837 [2020-10-29 08:03:23,391 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:03:23,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3837 states. [2020-10-29 08:03:23,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3837 to 3467. [2020-10-29 08:03:23,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3467 states. [2020-10-29 08:03:23,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3467 states to 3467 states and 3741 transitions. [2020-10-29 08:03:23,495 INFO L78 Accepts]: Start accepts. Automaton has 3467 states and 3741 transitions. Word has length 434 [2020-10-29 08:03:23,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:03:23,496 INFO L481 AbstractCegarLoop]: Abstraction has 3467 states and 3741 transitions. [2020-10-29 08:03:23,496 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:03:23,496 INFO L276 IsEmpty]: Start isEmpty. Operand 3467 states and 3741 transitions. [2020-10-29 08:03:23,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2020-10-29 08:03:23,510 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:03:23,511 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-29 08:03:23,511 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 08:03:23,511 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:03:23,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:03:23,512 INFO L82 PathProgramCache]: Analyzing trace with hash -429883765, now seen corresponding path program 1 times [2020-10-29 08:03:23,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:03:23,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [876501653] [2020-10-29 08:03:23,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:03:23,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:23,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:23,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:23,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:25,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:28,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:28,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 467 [2020-10-29 08:03:28,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:03:28,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-29 08:03:28,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:28,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:28,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:03:28,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 154 [2020-10-29 08:03:28,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-29 08:03:28,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:28,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:03:28,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:28,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:28,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:28,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:03:28,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:28,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 08:03:28,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:28,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:28,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:03:28,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:03:28,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:03:28,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:28,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:03:28,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:28,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:28,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:28,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-29 08:03:28,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:28,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-29 08:03:28,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:28,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:28,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:03:28,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:03:28,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-29 08:03:28,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:28,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-29 08:03:28,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:28,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:29,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:29,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 08:03:29,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:29,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-29 08:03:29,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:29,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:29,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:03:29,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:03:29,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 08:03:29,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:29,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2020-10-29 08:03:29,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:29,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:29,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:29,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-29 08:03:29,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:29,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-29 08:03:29,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:29,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:29,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:03:29,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 122 [2020-10-29 08:03:29,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:03:29,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:29,403 INFO L134 CoverageAnalysis]: Checked inductivity of 539 backedges. 306 proven. 109 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2020-10-29 08:03:29,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [876501653] [2020-10-29 08:03:29,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:03:29,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:03:29,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824023245] [2020-10-29 08:03:29,405 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:03:29,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:03:29,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:03:29,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:03:29,406 INFO L87 Difference]: Start difference. First operand 3467 states and 3741 transitions. Second operand 7 states. [2020-10-29 08:03:35,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:03:35,305 INFO L93 Difference]: Finished difference Result 8385 states and 9363 transitions. [2020-10-29 08:03:35,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 08:03:35,307 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 451 [2020-10-29 08:03:35,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:03:35,334 INFO L225 Difference]: With dead ends: 8385 [2020-10-29 08:03:35,334 INFO L226 Difference]: Without dead ends: 5266 [2020-10-29 08:03:35,344 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 08:03:35,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5266 states. [2020-10-29 08:03:35,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5266 to 4859. [2020-10-29 08:03:35,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4859 states. [2020-10-29 08:03:35,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4859 states to 4859 states and 5203 transitions. [2020-10-29 08:03:35,480 INFO L78 Accepts]: Start accepts. Automaton has 4859 states and 5203 transitions. Word has length 451 [2020-10-29 08:03:35,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:03:35,481 INFO L481 AbstractCegarLoop]: Abstraction has 4859 states and 5203 transitions. [2020-10-29 08:03:35,482 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:03:35,482 INFO L276 IsEmpty]: Start isEmpty. Operand 4859 states and 5203 transitions. [2020-10-29 08:03:35,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2020-10-29 08:03:35,494 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:03:35,494 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:03:35,494 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 08:03:35,495 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:03:35,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:03:35,495 INFO L82 PathProgramCache]: Analyzing trace with hash 1576509131, now seen corresponding path program 1 times [2020-10-29 08:03:35,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:03:35,496 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1136721003] [2020-10-29 08:03:35,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:03:35,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:35,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:35,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:35,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:38,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:39,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:40,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:40,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 518 [2020-10-29 08:03:40,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 08:03:40,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 08:03:40,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:40,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:40,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:03:40,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:03:40,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-29 08:03:40,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:40,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:03:40,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:40,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:40,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:40,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:03:40,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:40,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 08:03:40,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:40,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:40,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:03:40,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:03:40,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:03:40,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:40,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:03:40,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:40,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:40,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:40,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-29 08:03:40,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:40,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-29 08:03:40,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:40,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:40,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:03:40,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:03:40,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 196 [2020-10-29 08:03:40,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:41,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-29 08:03:41,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:41,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:41,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:41,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 08:03:41,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:41,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-29 08:03:41,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:41,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:41,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:03:41,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-29 08:03:41,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:03:41,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:41,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-10-29 08:03:41,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:41,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:41,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:41,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-29 08:03:41,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:41,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-29 08:03:41,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:41,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:41,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:03:41,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 122 [2020-10-29 08:03:41,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:03:41,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:41,424 INFO L134 CoverageAnalysis]: Checked inductivity of 539 backedges. 195 proven. 224 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2020-10-29 08:03:41,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1136721003] [2020-10-29 08:03:41,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:03:41,425 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 08:03:41,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290862900] [2020-10-29 08:03:41,426 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 08:03:41,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:03:41,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 08:03:41,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:03:41,427 INFO L87 Difference]: Start difference. First operand 4859 states and 5203 transitions. Second operand 8 states. [2020-10-29 08:03:44,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:03:44,919 INFO L93 Difference]: Finished difference Result 10416 states and 11203 transitions. [2020-10-29 08:03:44,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 08:03:44,920 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 502 [2020-10-29 08:03:44,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:03:44,943 INFO L225 Difference]: With dead ends: 10416 [2020-10-29 08:03:44,943 INFO L226 Difference]: Without dead ends: 5567 [2020-10-29 08:03:44,953 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-29 08:03:44,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5567 states. [2020-10-29 08:03:45,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5567 to 5204. [2020-10-29 08:03:45,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5204 states. [2020-10-29 08:03:45,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5204 states to 5204 states and 5511 transitions. [2020-10-29 08:03:45,075 INFO L78 Accepts]: Start accepts. Automaton has 5204 states and 5511 transitions. Word has length 502 [2020-10-29 08:03:45,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:03:45,076 INFO L481 AbstractCegarLoop]: Abstraction has 5204 states and 5511 transitions. [2020-10-29 08:03:45,076 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 08:03:45,076 INFO L276 IsEmpty]: Start isEmpty. Operand 5204 states and 5511 transitions. [2020-10-29 08:03:45,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 632 [2020-10-29 08:03:45,089 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:03:45,089 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:03:45,090 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 08:03:45,090 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:03:45,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:03:45,090 INFO L82 PathProgramCache]: Analyzing trace with hash -1283704762, now seen corresponding path program 1 times [2020-10-29 08:03:45,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:03:45,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2115101176] [2020-10-29 08:03:45,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:03:45,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:45,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:45,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:45,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:50,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:50,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 649 [2020-10-29 08:03:50,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:03:50,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5257 [2020-10-29 08:03:50,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:50,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:50,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:03:50,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 448 [2020-10-29 08:03:50,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-29 08:03:50,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:50,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:03:50,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:50,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:50,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:50,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:03:50,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:50,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 08:03:50,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:50,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:50,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:03:50,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:03:50,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:03:50,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:50,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:03:50,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:50,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:50,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:50,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 08:03:50,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:50,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 08:03:50,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:50,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:50,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:03:50,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:03:50,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:03:50,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:50,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-29 08:03:50,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:50,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:50,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:50,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-29 08:03:50,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:50,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-29 08:03:50,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:50,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:50,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:03:50,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:03:50,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:03:50,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:50,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2020-10-29 08:03:50,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:50,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:51,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:51,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 08:03:51,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:51,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-29 08:03:51,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:51,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:51,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:03:51,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:03:51,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-29 08:03:51,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:51,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2020-10-29 08:03:51,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:51,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:51,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:51,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-29 08:03:51,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:51,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-29 08:03:51,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:51,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:51,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:03:51,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:03:51,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-29 08:03:51,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:51,694 INFO L134 CoverageAnalysis]: Checked inductivity of 967 backedges. 619 proven. 2 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2020-10-29 08:03:51,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2115101176] [2020-10-29 08:03:51,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:03:51,696 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 08:03:51,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826781190] [2020-10-29 08:03:51,698 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 08:03:51,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:03:51,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 08:03:51,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:03:51,704 INFO L87 Difference]: Start difference. First operand 5204 states and 5511 transitions. Second operand 8 states. [2020-10-29 08:03:56,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:03:56,545 INFO L93 Difference]: Finished difference Result 12793 states and 13706 transitions. [2020-10-29 08:03:56,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 08:03:56,546 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 631 [2020-10-29 08:03:56,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:03:56,574 INFO L225 Difference]: With dead ends: 12793 [2020-10-29 08:03:56,574 INFO L226 Difference]: Without dead ends: 7251 [2020-10-29 08:03:56,586 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:03:56,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7251 states. [2020-10-29 08:03:56,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7251 to 6904. [2020-10-29 08:03:56,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6904 states. [2020-10-29 08:03:56,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6904 states to 6904 states and 7358 transitions. [2020-10-29 08:03:56,738 INFO L78 Accepts]: Start accepts. Automaton has 6904 states and 7358 transitions. Word has length 631 [2020-10-29 08:03:56,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:03:56,739 INFO L481 AbstractCegarLoop]: Abstraction has 6904 states and 7358 transitions. [2020-10-29 08:03:56,739 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 08:03:56,739 INFO L276 IsEmpty]: Start isEmpty. Operand 6904 states and 7358 transitions. [2020-10-29 08:03:56,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 816 [2020-10-29 08:03:56,759 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:03:56,760 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:03:56,760 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 08:03:56,760 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:03:56,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:03:56,761 INFO L82 PathProgramCache]: Analyzing trace with hash 989906830, now seen corresponding path program 1 times [2020-10-29 08:03:56,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:03:56,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [727262217] [2020-10-29 08:03:56,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:03:56,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:56,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:57,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:57,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:01,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:01,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 833 [2020-10-29 08:04:01,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:04:01,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 08:04:01,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:01,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:01,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:04:01,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 229 [2020-10-29 08:04:01,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 198 [2020-10-29 08:04:01,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:02,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:04:02,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:02,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:02,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:02,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:04:02,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:02,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 08:04:02,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:02,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:02,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:04:02,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:04:02,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:04:02,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:02,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:04:02,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:02,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:02,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:02,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-29 08:04:02,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:02,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-29 08:04:02,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:02,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:02,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:04:02,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:04:02,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 214 [2020-10-29 08:04:02,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:02,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 08:04:02,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:02,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:02,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:02,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-29 08:04:02,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:02,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-29 08:04:02,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:02,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:02,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:04:02,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:04:02,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 196 [2020-10-29 08:04:02,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:02,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-10-29 08:04:02,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:02,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:02,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:02,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 08:04:02,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:02,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-29 08:04:02,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:02,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:02,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:04:02,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-29 08:04:02,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:04:02,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:02,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 532 [2020-10-29 08:04:02,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:02,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:02,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:02,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-29 08:04:02,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:02,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-29 08:04:02,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:02,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:02,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:04:02,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 216 [2020-10-29 08:04:02,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:04:02,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:03,270 INFO L134 CoverageAnalysis]: Checked inductivity of 1198 backedges. 460 proven. 301 refuted. 0 times theorem prover too weak. 437 trivial. 0 not checked. [2020-10-29 08:04:03,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [727262217] [2020-10-29 08:04:03,271 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:04:03,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:04:03,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856806985] [2020-10-29 08:04:03,272 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:04:03,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:04:03,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:04:03,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:04:03,274 INFO L87 Difference]: Start difference. First operand 6904 states and 7358 transitions. Second operand 7 states. [2020-10-29 08:04:07,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:04:07,059 INFO L93 Difference]: Finished difference Result 14498 states and 15508 transitions. [2020-10-29 08:04:07,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:04:07,060 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 815 [2020-10-29 08:04:07,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:04:07,084 INFO L225 Difference]: With dead ends: 14498 [2020-10-29 08:04:07,084 INFO L226 Difference]: Without dead ends: 7600 [2020-10-29 08:04:07,099 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:04:07,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7600 states. [2020-10-29 08:04:07,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7600 to 7586. [2020-10-29 08:04:07,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7586 states. [2020-10-29 08:04:07,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7586 states to 7586 states and 8046 transitions. [2020-10-29 08:04:07,258 INFO L78 Accepts]: Start accepts. Automaton has 7586 states and 8046 transitions. Word has length 815 [2020-10-29 08:04:07,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:04:07,259 INFO L481 AbstractCegarLoop]: Abstraction has 7586 states and 8046 transitions. [2020-10-29 08:04:07,259 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:04:07,259 INFO L276 IsEmpty]: Start isEmpty. Operand 7586 states and 8046 transitions. [2020-10-29 08:04:07,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1006 [2020-10-29 08:04:07,285 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:04:07,286 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:04:07,286 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 08:04:07,286 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:04:07,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:04:07,287 INFO L82 PathProgramCache]: Analyzing trace with hash -1747804252, now seen corresponding path program 1 times [2020-10-29 08:04:07,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:04:07,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1505151797] [2020-10-29 08:04:07,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:04:07,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:07,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:07,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:07,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:08,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:09,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:12,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:12,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1027 [2020-10-29 08:04:12,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 08:04:12,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-29 08:04:12,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:12,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:12,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:04:12,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:04:12,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 255 [2020-10-29 08:04:12,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:12,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:04:12,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:12,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:12,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:12,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:04:12,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:12,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 08:04:12,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:12,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:12,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:04:12,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:04:12,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:04:12,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:12,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:04:12,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:12,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:12,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:12,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-29 08:04:12,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:12,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 276 [2020-10-29 08:04:12,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:12,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:12,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:04:12,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:04:12,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-29 08:04:12,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:13,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-29 08:04:13,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:13,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:13,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:13,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 08:04:13,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:13,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 08:04:13,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:13,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:13,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:04:13,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-29 08:04:13,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:04:13,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:13,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-10-29 08:04:13,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:13,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:13,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:13,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-29 08:04:13,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:13,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-29 08:04:13,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:13,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:13,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:04:13,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-29 08:04:13,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:04:13,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:13,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-29 08:04:13,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:13,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:13,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:13,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-29 08:04:13,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:13,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-29 08:04:13,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:13,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:13,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:04:13,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-29 08:04:13,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:04:13,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:13,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 612 [2020-10-29 08:04:13,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:13,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:13,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:13,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 08:04:13,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:13,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 08:04:13,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:13,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:13,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:04:13,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-29 08:04:13,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:04:13,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:13,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 722 [2020-10-29 08:04:13,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:13,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:13,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:13,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-29 08:04:13,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:13,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-29 08:04:13,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:13,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:13,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:04:13,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 216 [2020-10-29 08:04:13,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:04:13,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:14,591 INFO L134 CoverageAnalysis]: Checked inductivity of 2107 backedges. 390 proven. 658 refuted. 0 times theorem prover too weak. 1059 trivial. 0 not checked. [2020-10-29 08:04:14,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1505151797] [2020-10-29 08:04:14,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:04:14,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:04:14,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888599289] [2020-10-29 08:04:14,593 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:04:14,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:04:14,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:04:14,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:04:14,594 INFO L87 Difference]: Start difference. First operand 7586 states and 8046 transitions. Second operand 7 states. [2020-10-29 08:04:20,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:04:20,682 INFO L93 Difference]: Finished difference Result 15866 states and 16816 transitions. [2020-10-29 08:04:20,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 08:04:20,691 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1005 [2020-10-29 08:04:20,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:04:20,719 INFO L225 Difference]: With dead ends: 15866 [2020-10-29 08:04:20,719 INFO L226 Difference]: Without dead ends: 8286 [2020-10-29 08:04:20,740 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-29 08:04:20,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8286 states. [2020-10-29 08:04:20,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8286 to 7927. [2020-10-29 08:04:20,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7927 states. [2020-10-29 08:04:20,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7927 states to 7927 states and 8392 transitions. [2020-10-29 08:04:20,922 INFO L78 Accepts]: Start accepts. Automaton has 7927 states and 8392 transitions. Word has length 1005 [2020-10-29 08:04:20,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:04:20,923 INFO L481 AbstractCegarLoop]: Abstraction has 7927 states and 8392 transitions. [2020-10-29 08:04:20,923 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:04:20,923 INFO L276 IsEmpty]: Start isEmpty. Operand 7927 states and 8392 transitions. [2020-10-29 08:04:20,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1253 [2020-10-29 08:04:20,961 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:04:20,962 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2020-10-29 08:04:20,962 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 08:04:20,962 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:04:20,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:04:20,963 INFO L82 PathProgramCache]: Analyzing trace with hash 141779125, now seen corresponding path program 1 times [2020-10-29 08:04:20,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:04:20,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [448029553] [2020-10-29 08:04:20,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:04:21,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:21,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:21,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:21,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:22,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:22,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:26,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:26,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1276 [2020-10-29 08:04:26,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 08:04:26,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5122 [2020-10-29 08:04:26,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:26,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:26,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 08:04:26,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:04:26,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 504 [2020-10-29 08:04:26,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:26,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:04:26,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:26,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:26,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:26,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:04:26,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:26,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 08:04:26,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:26,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:26,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:04:26,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:04:26,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:04:26,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:04:26,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:04:26,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:26,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:26,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:27,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:27,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-29 08:04:27,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:04:27,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 440 [2020-10-29 08:04:27,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:27,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:27,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:04:27,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:04:27,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 242 [2020-10-29 08:04:27,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:27,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-29 08:04:27,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:27,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:27,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:27,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-29 08:04:27,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:27,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 357 [2020-10-29 08:04:27,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:27,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:27,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:04:27,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:04:27,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-29 08:04:27,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:27,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-29 08:04:27,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:27,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:27,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:27,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 08:04:27,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:27,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 08:04:27,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:27,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:27,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:04:27,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-29 08:04:27,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:04:27,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:27,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 573 [2020-10-29 08:04:27,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:27,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:27,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:27,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-29 08:04:27,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:27,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-29 08:04:27,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:27,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:27,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:04:27,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-29 08:04:27,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:04:27,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:27,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 717 [2020-10-29 08:04:28,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:28,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:28,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:28,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-29 08:04:28,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:28,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-29 08:04:28,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:28,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:28,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:04:28,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-29 08:04:28,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:04:28,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:28,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 859 [2020-10-29 08:04:28,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:28,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:28,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:28,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 08:04:28,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:28,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 08:04:28,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:28,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:28,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:04:28,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-29 08:04:28,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:04:28,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:28,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 969 [2020-10-29 08:04:28,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:28,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:28,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:28,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-29 08:04:28,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:28,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-29 08:04:28,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:28,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:28,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:04:28,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 216 [2020-10-29 08:04:28,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:04:28,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:29,638 INFO L134 CoverageAnalysis]: Checked inductivity of 3102 backedges. 716 proven. 670 refuted. 0 times theorem prover too weak. 1716 trivial. 0 not checked. [2020-10-29 08:04:29,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [448029553] [2020-10-29 08:04:29,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:04:29,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:04:29,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903615290] [2020-10-29 08:04:29,639 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:04:29,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:04:29,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:04:29,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:04:29,640 INFO L87 Difference]: Start difference. First operand 7927 states and 8392 transitions. Second operand 7 states. [2020-10-29 08:04:34,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:04:34,055 INFO L93 Difference]: Finished difference Result 15519 states and 16451 transitions. [2020-10-29 08:04:34,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 08:04:34,064 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1252 [2020-10-29 08:04:34,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:04:34,092 INFO L225 Difference]: With dead ends: 15519 [2020-10-29 08:04:34,092 INFO L226 Difference]: Without dead ends: 7937 [2020-10-29 08:04:34,108 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-29 08:04:34,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7937 states. [2020-10-29 08:04:34,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7937 to 7927. [2020-10-29 08:04:34,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7927 states. [2020-10-29 08:04:34,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7927 states to 7927 states and 8390 transitions. [2020-10-29 08:04:34,289 INFO L78 Accepts]: Start accepts. Automaton has 7927 states and 8390 transitions. Word has length 1252 [2020-10-29 08:04:34,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:04:34,290 INFO L481 AbstractCegarLoop]: Abstraction has 7927 states and 8390 transitions. [2020-10-29 08:04:34,290 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:04:34,290 INFO L276 IsEmpty]: Start isEmpty. Operand 7927 states and 8390 transitions. [2020-10-29 08:04:34,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1287 [2020-10-29 08:04:34,329 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:04:34,330 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:04:34,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 08:04:34,330 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:04:34,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:04:34,331 INFO L82 PathProgramCache]: Analyzing trace with hash 1145740386, now seen corresponding path program 1 times [2020-10-29 08:04:34,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:04:34,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [773692488] [2020-10-29 08:04:34,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:04:34,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:34,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:35,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:35,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:36,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:36,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:39,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:39,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1312 [2020-10-29 08:04:39,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 08:04:39,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-29 08:04:39,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:39,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:39,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:04:39,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-29 08:04:39,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-29 08:04:39,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:39,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:04:39,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:39,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:39,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:39,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:04:39,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:39,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 08:04:39,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:39,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:39,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:04:39,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:04:39,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:04:39,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:39,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:04:39,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:39,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:40,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:40,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-29 08:04:40,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:40,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-29 08:04:40,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:40,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:40,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:04:40,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:04:40,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-29 08:04:40,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:40,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-29 08:04:40,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:40,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:40,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:40,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-29 08:04:40,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:40,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-10-29 08:04:40,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:40,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:40,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:04:40,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:04:40,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-29 08:04:40,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:40,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-29 08:04:40,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:40,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:40,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:40,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 08:04:40,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:40,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-29 08:04:40,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:40,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:40,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:04:40,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-29 08:04:40,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:04:40,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:40,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-10-29 08:04:40,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:40,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:40,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:40,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 08:04:40,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:40,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 08:04:40,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:40,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:40,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:04:40,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-29 08:04:40,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:04:40,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:40,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 607 [2020-10-29 08:04:40,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:40,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:40,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:40,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-29 08:04:40,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:40,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-29 08:04:40,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:40,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:40,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:04:40,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-29 08:04:40,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:04:40,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:40,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 751 [2020-10-29 08:04:40,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:40,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:40,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:40,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-29 08:04:40,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:40,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-29 08:04:40,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:40,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:40,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:04:40,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-29 08:04:40,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:04:40,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:40,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 893 [2020-10-29 08:04:40,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:40,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:40,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:40,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 08:04:40,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:40,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-29 08:04:40,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:40,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:40,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:04:40,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-29 08:04:40,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:04:40,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:40,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1003 [2020-10-29 08:04:41,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:41,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:41,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:41,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-29 08:04:41,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:41,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-29 08:04:41,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:41,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:41,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:04:41,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 216 [2020-10-29 08:04:41,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:04:41,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:42,261 INFO L134 CoverageAnalysis]: Checked inductivity of 3850 backedges. 703 proven. 740 refuted. 0 times theorem prover too weak. 2407 trivial. 0 not checked. [2020-10-29 08:04:42,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [773692488] [2020-10-29 08:04:42,262 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:04:42,262 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 08:04:42,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747487714] [2020-10-29 08:04:42,263 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 08:04:42,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:04:42,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 08:04:42,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:04:42,264 INFO L87 Difference]: Start difference. First operand 7927 states and 8390 transitions. Second operand 8 states. [2020-10-29 08:04:48,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:04:48,615 INFO L93 Difference]: Finished difference Result 18901 states and 20189 transitions. [2020-10-29 08:04:48,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:04:48,618 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1286 [2020-10-29 08:04:48,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:04:48,657 INFO L225 Difference]: With dead ends: 18901 [2020-10-29 08:04:48,658 INFO L226 Difference]: Without dead ends: 11319 [2020-10-29 08:04:48,673 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-10-29 08:04:48,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11319 states. [2020-10-29 08:04:48,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11319 to 11315. [2020-10-29 08:04:48,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11315 states. [2020-10-29 08:04:48,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11315 states to 11315 states and 11935 transitions. [2020-10-29 08:04:48,885 INFO L78 Accepts]: Start accepts. Automaton has 11315 states and 11935 transitions. Word has length 1286 [2020-10-29 08:04:48,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:04:48,886 INFO L481 AbstractCegarLoop]: Abstraction has 11315 states and 11935 transitions. [2020-10-29 08:04:48,886 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 08:04:48,887 INFO L276 IsEmpty]: Start isEmpty. Operand 11315 states and 11935 transitions. [2020-10-29 08:04:48,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1616 [2020-10-29 08:04:48,934 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:04:48,938 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 08:04:48,938 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 08:04:48,938 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:04:48,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:04:48,939 INFO L82 PathProgramCache]: Analyzing trace with hash 1483233837, now seen corresponding path program 1 times [2020-10-29 08:04:48,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:04:48,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1317718817] [2020-10-29 08:04:48,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:04:49,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:49,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:49,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:53,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:54,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:54,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:54,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1639 [2020-10-29 08:04:54,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:04:54,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-29 08:04:54,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:54,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:54,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:04:54,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 802 [2020-10-29 08:04:54,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-29 08:04:54,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:54,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:04:54,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:54,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:54,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:54,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:04:54,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:54,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 08:04:54,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:54,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:54,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:04:54,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:04:54,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:04:54,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:54,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:04:54,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:54,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:54,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:54,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-29 08:04:54,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:54,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-29 08:04:54,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:54,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:54,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:04:54,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:04:54,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:04:54,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:54,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-29 08:04:54,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:54,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:54,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:54,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-29 08:04:54,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:54,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-29 08:04:54,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:54,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:54,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:04:54,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:04:54,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:04:54,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:54,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-29 08:04:54,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:54,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:54,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:54,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 08:04:54,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:54,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 08:04:54,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:54,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:54,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:04:54,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:04:54,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:04:54,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:54,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-29 08:04:54,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:54,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:55,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:55,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-29 08:04:55,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:55,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-29 08:04:55,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:55,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:55,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:04:55,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:04:55,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-29 08:04:55,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:55,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 794 [2020-10-29 08:04:55,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:55,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:55,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:55,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-29 08:04:55,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:55,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 248 [2020-10-29 08:04:55,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:55,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:55,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:04:55,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:04:55,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-29 08:04:55,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:55,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1067 [2020-10-29 08:04:55,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:55,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:55,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:55,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-29 08:04:55,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:55,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-29 08:04:55,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:55,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:55,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:04:55,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 263 [2020-10-29 08:04:55,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:04:55,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:55,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1332 [2020-10-29 08:04:55,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:55,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:55,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:55,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-29 08:04:55,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:55,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-29 08:04:55,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:55,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:55,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:04:55,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 216 [2020-10-29 08:04:55,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:04:55,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:58,019 INFO L134 CoverageAnalysis]: Checked inductivity of 4488 backedges. 1276 proven. 479 refuted. 0 times theorem prover too weak. 2733 trivial. 0 not checked. [2020-10-29 08:04:58,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1317718817] [2020-10-29 08:04:58,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:04:58,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:04:58,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821145167] [2020-10-29 08:04:58,021 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:04:58,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:04:58,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:04:58,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:04:58,022 INFO L87 Difference]: Start difference. First operand 11315 states and 11935 transitions. Second operand 7 states. [2020-10-29 08:05:02,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:05:02,533 INFO L93 Difference]: Finished difference Result 22293 states and 23534 transitions. [2020-10-29 08:05:02,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 08:05:02,535 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1615 [2020-10-29 08:05:02,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:05:02,568 INFO L225 Difference]: With dead ends: 22293 [2020-10-29 08:05:02,568 INFO L226 Difference]: Without dead ends: 11323 [2020-10-29 08:05:02,586 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:05:02,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11323 states. [2020-10-29 08:05:02,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11323 to 11315. [2020-10-29 08:05:02,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11315 states. [2020-10-29 08:05:02,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11315 states to 11315 states and 11931 transitions. [2020-10-29 08:05:02,814 INFO L78 Accepts]: Start accepts. Automaton has 11315 states and 11931 transitions. Word has length 1615 [2020-10-29 08:05:02,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:05:02,816 INFO L481 AbstractCegarLoop]: Abstraction has 11315 states and 11931 transitions. [2020-10-29 08:05:02,816 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:05:02,816 INFO L276 IsEmpty]: Start isEmpty. Operand 11315 states and 11931 transitions. [2020-10-29 08:05:02,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1776 [2020-10-29 08:05:02,864 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:05:02,865 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 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 08:05:02,865 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 08:05:02,865 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:05:02,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:05:02,866 INFO L82 PathProgramCache]: Analyzing trace with hash -1197384961, now seen corresponding path program 1 times [2020-10-29 08:05:02,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:05:02,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [797759411] [2020-10-29 08:05:02,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:05:03,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:03,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:03,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:04,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:04,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:05,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:08,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:08,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1803 [2020-10-29 08:05:08,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 08:05:08,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5077 [2020-10-29 08:05:08,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:08,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:08,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:05:08,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 822 [2020-10-29 08:05:08,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 420 [2020-10-29 08:05:08,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:08,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:05:08,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:08,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:08,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:08,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:05:08,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:08,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 08:05:08,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:08,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:08,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:05:08,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:05:08,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:05:08,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:08,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:05:08,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:08,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:08,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:08,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-29 08:05:08,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:08,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-29 08:05:08,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:08,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:08,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:05:08,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:05:08,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:05:08,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:08,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-29 08:05:08,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:08,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:08,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:08,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-29 08:05:08,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:08,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-29 08:05:08,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:08,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:08,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:05:08,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:05:08,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:05:08,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:08,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-29 08:05:08,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:08,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:08,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:08,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 08:05:08,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:08,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 08:05:08,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:08,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:08,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:05:08,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:05:08,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:05:08,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:08,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-29 08:05:08,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:08,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:08,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:08,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 08:05:08,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:08,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 08:05:08,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:08,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:08,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:05:08,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:05:08,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:05:08,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:08,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 668 [2020-10-29 08:05:08,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:08,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:08,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:08,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-29 08:05:08,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:08,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-29 08:05:08,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:08,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:08,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:05:08,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:05:08,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-29 08:05:08,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:09,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 812 [2020-10-29 08:05:09,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:09,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:09,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:09,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-29 08:05:09,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:09,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-29 08:05:09,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:09,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:09,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:05:09,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:05:09,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-29 08:05:09,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:09,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 954 [2020-10-29 08:05:09,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:09,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:09,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:09,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-29 08:05:09,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:09,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 254 [2020-10-29 08:05:09,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:09,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:09,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:05:09,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:05:09,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-29 08:05:09,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:09,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1227 [2020-10-29 08:05:10,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:10,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:10,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:10,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-29 08:05:10,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:10,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-29 08:05:10,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:10,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:10,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:05:10,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 263 [2020-10-29 08:05:10,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:05:10,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:10,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1492 [2020-10-29 08:05:10,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:10,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:10,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:10,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-29 08:05:10,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:10,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-29 08:05:10,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:10,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:10,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:05:10,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 216 [2020-10-29 08:05:10,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:05:10,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:13,970 INFO L134 CoverageAnalysis]: Checked inductivity of 5896 backedges. 2194 proven. 757 refuted. 0 times theorem prover too weak. 2945 trivial. 0 not checked. [2020-10-29 08:05:13,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [797759411] [2020-10-29 08:05:13,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:05:13,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 08:05:13,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882010858] [2020-10-29 08:05:13,973 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 08:05:13,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:05:13,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 08:05:13,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:05:13,973 INFO L87 Difference]: Start difference. First operand 11315 states and 11931 transitions. Second operand 8 states. [2020-10-29 08:05:18,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:05:18,985 INFO L93 Difference]: Finished difference Result 23318 states and 24607 transitions. [2020-10-29 08:05:18,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 08:05:18,987 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1775 [2020-10-29 08:05:18,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:05:19,018 INFO L225 Difference]: With dead ends: 23318 [2020-10-29 08:05:19,018 INFO L226 Difference]: Without dead ends: 12348 [2020-10-29 08:05:19,029 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2020-10-29 08:05:19,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12348 states. [2020-10-29 08:05:19,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12348 to 12334. [2020-10-29 08:05:19,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12334 states. [2020-10-29 08:05:19,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12334 states to 12334 states and 12977 transitions. [2020-10-29 08:05:19,246 INFO L78 Accepts]: Start accepts. Automaton has 12334 states and 12977 transitions. Word has length 1775 [2020-10-29 08:05:19,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:05:19,248 INFO L481 AbstractCegarLoop]: Abstraction has 12334 states and 12977 transitions. [2020-10-29 08:05:19,248 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 08:05:19,249 INFO L276 IsEmpty]: Start isEmpty. Operand 12334 states and 12977 transitions. [2020-10-29 08:05:19,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1856 [2020-10-29 08:05:19,298 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:05:19,299 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 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, 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] [2020-10-29 08:05:19,299 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 08:05:19,300 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:05:19,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:05:19,300 INFO L82 PathProgramCache]: Analyzing trace with hash 1511719637, now seen corresponding path program 1 times [2020-10-29 08:05:19,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:05:19,301 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [960433754] [2020-10-29 08:05:19,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:05:19,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:20,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:20,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:20,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:21,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:21,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:24,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:24,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1883 [2020-10-29 08:05:24,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 08:05:24,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-29 08:05:24,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:24,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:24,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:05:24,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 794 [2020-10-29 08:05:24,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 253 [2020-10-29 08:05:24,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:24,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:05:24,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:24,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:24,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:24,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:05:24,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:24,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 08:05:24,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:24,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:24,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:05:24,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:05:24,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:05:24,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:25,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:05:25,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:25,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:25,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:25,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-29 08:05:25,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:25,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-29 08:05:25,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:25,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:25,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:05:25,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:05:25,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:05:25,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:25,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-29 08:05:25,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:25,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:25,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:25,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-29 08:05:25,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:25,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-29 08:05:25,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:25,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:25,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:05:25,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:05:25,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:05:25,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:25,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-29 08:05:25,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:25,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:25,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:25,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 08:05:25,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:25,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 08:05:25,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:25,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:25,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:05:25,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:05:25,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:05:25,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:25,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-29 08:05:25,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:25,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:25,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:25,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 08:05:25,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:25,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 08:05:25,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:25,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:25,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:05:25,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:05:25,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:05:25,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:25,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 669 [2020-10-29 08:05:25,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:25,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:25,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:25,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-29 08:05:25,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:25,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-29 08:05:25,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:25,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:25,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:05:25,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:05:25,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-29 08:05:25,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:25,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 784 [2020-10-29 08:05:25,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:25,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:25,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:25,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-29 08:05:25,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:25,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-10-29 08:05:25,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:25,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:25,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:05:25,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:05:25,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 251 [2020-10-29 08:05:25,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:26,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1034 [2020-10-29 08:05:26,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:26,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:26,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:26,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-29 08:05:26,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:26,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-29 08:05:26,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:26,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:26,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:05:26,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-29 08:05:26,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:05:26,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:26,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1307 [2020-10-29 08:05:26,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:26,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:26,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:26,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-29 08:05:26,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:26,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-29 08:05:26,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:26,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:26,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:05:26,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 263 [2020-10-29 08:05:26,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:05:26,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:26,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1572 [2020-10-29 08:05:26,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:26,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:26,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:26,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-29 08:05:26,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:26,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-29 08:05:26,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:26,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:26,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:05:26,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 216 [2020-10-29 08:05:26,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:05:26,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:28,849 INFO L134 CoverageAnalysis]: Checked inductivity of 6188 backedges. 1426 proven. 711 refuted. 0 times theorem prover too weak. 4051 trivial. 0 not checked. [2020-10-29 08:05:28,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [960433754] [2020-10-29 08:05:28,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:05:28,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:05:28,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975629141] [2020-10-29 08:05:28,851 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:05:28,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:05:28,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:05:28,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:05:28,852 INFO L87 Difference]: Start difference. First operand 12334 states and 12977 transitions. Second operand 7 states. [2020-10-29 08:05:33,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:05:33,609 INFO L93 Difference]: Finished difference Result 24668 states and 25958 transitions. [2020-10-29 08:05:33,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 08:05:33,613 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1855 [2020-10-29 08:05:33,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:05:33,643 INFO L225 Difference]: With dead ends: 24668 [2020-10-29 08:05:33,643 INFO L226 Difference]: Without dead ends: 12679 [2020-10-29 08:05:33,659 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-29 08:05:33,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12679 states. [2020-10-29 08:05:33,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12679 to 12675. [2020-10-29 08:05:33,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12675 states. [2020-10-29 08:05:33,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12675 states to 12675 states and 13321 transitions. [2020-10-29 08:05:33,873 INFO L78 Accepts]: Start accepts. Automaton has 12675 states and 13321 transitions. Word has length 1855 [2020-10-29 08:05:33,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:05:33,875 INFO L481 AbstractCegarLoop]: Abstraction has 12675 states and 13321 transitions. [2020-10-29 08:05:33,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:05:33,875 INFO L276 IsEmpty]: Start isEmpty. Operand 12675 states and 13321 transitions. [2020-10-29 08:05:33,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1894 [2020-10-29 08:05:33,912 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:05:33,913 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-29 08:05:33,914 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 08:05:33,914 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:05:33,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:05:33,915 INFO L82 PathProgramCache]: Analyzing trace with hash -1557211029, now seen corresponding path program 1 times [2020-10-29 08:05:33,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:05:33,915 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2031797081] [2020-10-29 08:05:33,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:05:34,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:34,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:34,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:34,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:35,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:36,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:39,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:39,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1921 [2020-10-29 08:05:39,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 08:05:39,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-29 08:05:39,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:39,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:39,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:05:39,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 676 [2020-10-29 08:05:39,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 265 [2020-10-29 08:05:39,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:39,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:05:39,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:39,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:39,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:39,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:05:39,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:39,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 08:05:39,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:39,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:39,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:05:39,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:05:39,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:05:39,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:39,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:05:39,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:39,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:39,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:39,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-29 08:05:39,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:39,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-29 08:05:39,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:39,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:39,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:05:39,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:05:39,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:05:39,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:39,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-29 08:05:39,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:39,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:39,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:39,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-29 08:05:39,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:39,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-29 08:05:39,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:39,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:39,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:05:39,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:05:39,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:05:39,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:39,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-29 08:05:39,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:39,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:39,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:39,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 08:05:39,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:39,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 08:05:39,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:39,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:39,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:05:39,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:05:39,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:05:39,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:39,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-29 08:05:39,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:39,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:39,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:39,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 08:05:39,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:39,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 08:05:39,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:39,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:39,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:05:39,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:05:39,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 08:05:39,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:39,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 668 [2020-10-29 08:05:39,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:39,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:40,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:40,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-29 08:05:40,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:40,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-10-29 08:05:40,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:40,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:40,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:05:40,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:05:40,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 263 [2020-10-29 08:05:40,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:40,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 930 [2020-10-29 08:05:40,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:40,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:40,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:40,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-29 08:05:40,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:40,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-29 08:05:40,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:40,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:40,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:05:40,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-29 08:05:40,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:05:40,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:40,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1072 [2020-10-29 08:05:40,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:40,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:40,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:40,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-29 08:05:40,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:40,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-29 08:05:40,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:40,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:40,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:05:40,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-29 08:05:40,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:05:40,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:40,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1345 [2020-10-29 08:05:40,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:40,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking...