/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/Problem15_label10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 07:41:10,541 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 07:41:10,544 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 07:41:10,583 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 07:41:10,584 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 07:41:10,586 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 07:41:10,588 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 07:41:10,591 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 07:41:10,593 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 07:41:10,595 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 07:41:10,597 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 07:41:10,598 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 07:41:10,599 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 07:41:10,601 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 07:41:10,602 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 07:41:10,604 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 07:41:10,606 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 07:41:10,607 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 07:41:10,619 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 07:41:10,624 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 07:41:10,632 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 07:41:10,635 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 07:41:10,638 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 07:41:10,639 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 07:41:10,645 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 07:41:10,650 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 07:41:10,650 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 07:41:10,652 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 07:41:10,652 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 07:41:10,654 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 07:41:10,655 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 07:41:10,656 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 07:41:10,659 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 07:41:10,660 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 07:41:10,661 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 07:41:10,663 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 07:41:10,663 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 07:41:10,664 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 07:41:10,664 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 07:41:10,666 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 07:41:10,668 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 07:41:10,669 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 07:41:10,738 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 07:41:10,739 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 07:41:10,742 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 07:41:10,742 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 07:41:10,743 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 07:41:10,745 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 07:41:10,745 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 07:41:10,746 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 07:41:10,746 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 07:41:10,746 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 07:41:10,748 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 07:41:10,748 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 07:41:10,748 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 07:41:10,748 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 07:41:10,749 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 07:41:10,749 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 07:41:10,749 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 07:41:10,749 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 07:41:10,750 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 07:41:10,750 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 07:41:10,750 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 07:41:10,751 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:41:10,751 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 07:41:10,751 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 07:41:10,751 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 07:41:10,751 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 07:41:10,752 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 07:41:10,752 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 07:41:10,752 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 07:41:10,752 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 07:41:11,227 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 07:41:11,273 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 07:41:11,277 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 07:41:11,279 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 07:41:11,279 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 07:41:11,280 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label10.c [2020-10-29 07:41:11,357 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2adf111c3/a3b246ecc0cd4a8183c21e35d0f882de/FLAGd1b3e7232 [2020-10-29 07:41:12,210 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 07:41:12,211 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label10.c [2020-10-29 07:41:12,239 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2adf111c3/a3b246ecc0cd4a8183c21e35d0f882de/FLAGd1b3e7232 [2020-10-29 07:41:12,329 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2adf111c3/a3b246ecc0cd4a8183c21e35d0f882de [2020-10-29 07:41:12,334 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 07:41:12,342 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 07:41:12,346 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 07:41:12,346 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 07:41:12,351 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 07:41:12,352 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:41:12" (1/1) ... [2020-10-29 07:41:12,363 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74e09d6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:41:12, skipping insertion in model container [2020-10-29 07:41:12,363 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:41:12" (1/1) ... [2020-10-29 07:41:12,372 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 07:41:12,463 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 07:41:13,249 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:41:13,260 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 07:41:13,514 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:41:13,537 INFO L208 MainTranslator]: Completed translation [2020-10-29 07:41:13,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:41:13 WrapperNode [2020-10-29 07:41:13,538 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 07:41:13,539 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 07:41:13,539 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 07:41:13,540 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 07:41:13,554 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:41:13" (1/1) ... [2020-10-29 07:41:13,555 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:41:13" (1/1) ... [2020-10-29 07:41:13,621 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:41:13" (1/1) ... [2020-10-29 07:41:13,621 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:41:13" (1/1) ... [2020-10-29 07:41:13,756 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:41:13" (1/1) ... [2020-10-29 07:41:13,773 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:41:13" (1/1) ... [2020-10-29 07:41:13,789 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:41:13" (1/1) ... [2020-10-29 07:41:13,814 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 07:41:13,816 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 07:41:13,817 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 07:41:13,817 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 07:41:13,818 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:41:13" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:41:13,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 07:41:13,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 07:41:13,910 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 07:41:13,911 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 07:41:13,911 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 07:41:13,911 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 07:41:13,912 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 07:41:13,912 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 07:41:13,913 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 07:41:13,913 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 07:41:13,914 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 07:41:13,915 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 07:41:13,915 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 07:41:13,915 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 07:41:13,915 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 07:41:13,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 07:41:13,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 07:41:13,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 07:41:13,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 07:41:13,918 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 07:41:13,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 07:41:17,614 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 07:41:17,615 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 07:41:17,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:41:17 BoogieIcfgContainer [2020-10-29 07:41:17,618 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 07:41:17,620 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 07:41:17,620 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 07:41:17,623 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 07:41:17,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 07:41:12" (1/3) ... [2020-10-29 07:41:17,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@283c0280 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:41:17, skipping insertion in model container [2020-10-29 07:41:17,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:41:13" (2/3) ... [2020-10-29 07:41:17,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@283c0280 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:41:17, skipping insertion in model container [2020-10-29 07:41:17,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:41:17" (3/3) ... [2020-10-29 07:41:17,627 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem15_label10.c [2020-10-29 07:41:17,640 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 07:41:17,647 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 07:41:17,663 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 07:41:17,699 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 07:41:17,700 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 07:41:17,700 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 07:41:17,700 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 07:41:17,700 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 07:41:17,700 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 07:41:17,701 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 07:41:17,701 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 07:41:17,733 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states. [2020-10-29 07:41:17,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-29 07:41:17,742 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:41:17,743 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] [2020-10-29 07:41:17,743 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:41:17,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:41:17,750 INFO L82 PathProgramCache]: Analyzing trace with hash 1853625679, now seen corresponding path program 1 times [2020-10-29 07:41:17,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:41:17,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1598475033] [2020-10-29 07:41:17,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:41:17,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:18,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:18,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:18,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-29 07:41:18,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:41:18,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 564 [2020-10-29 07:41:18,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:18,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:18,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:41:18,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:41:18,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 07:41:18,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 07:41:18,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:41:18,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:18,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:18,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:18,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:41:18,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:41:18,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-29 07:41:18,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:18,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:18,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:41:18,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:41:18,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:41:18,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:41:18,803 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 07:41:18,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1598475033] [2020-10-29 07:41:18,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:41:18,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 07:41:18,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59752378] [2020-10-29 07:41:18,813 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 07:41:18,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:41:18,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 07:41:18,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 07:41:18,836 INFO L87 Difference]: Start difference. First operand 441 states. Second operand 4 states. [2020-10-29 07:41:25,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:41:25,076 INFO L93 Difference]: Finished difference Result 1204 states and 2170 transitions. [2020-10-29 07:41:25,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:41:25,081 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2020-10-29 07:41:25,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:41:25,102 INFO L225 Difference]: With dead ends: 1204 [2020-10-29 07:41:25,102 INFO L226 Difference]: Without dead ends: 698 [2020-10-29 07:41:25,120 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:41:25,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2020-10-29 07:41:25,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 692. [2020-10-29 07:41:25,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 692 states. [2020-10-29 07:41:25,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1013 transitions. [2020-10-29 07:41:25,236 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1013 transitions. Word has length 41 [2020-10-29 07:41:25,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:41:25,237 INFO L481 AbstractCegarLoop]: Abstraction has 692 states and 1013 transitions. [2020-10-29 07:41:25,237 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 07:41:25,238 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1013 transitions. [2020-10-29 07:41:25,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-29 07:41:25,243 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:41:25,244 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:41:25,244 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 07:41:25,244 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:41:25,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:41:25,245 INFO L82 PathProgramCache]: Analyzing trace with hash 68686265, now seen corresponding path program 1 times [2020-10-29 07:41:25,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:41:25,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [483745262] [2020-10-29 07:41:25,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:41:25,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:25,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:25,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:27,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:27,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-29 07:41:27,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:41:27,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1813 [2020-10-29 07:41:27,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:27,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:27,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:41:27,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:41:27,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 07:41:27,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:41:27,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:41:27,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:27,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:27,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:27,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:41:27,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:41:27,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 07:41:27,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:27,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:27,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:41:27,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:41:27,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:41:27,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:41:27,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:41:27,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:27,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:27,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:27,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 07:41:27,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:41:27,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-10-29 07:41:27,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:27,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:27,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:41:27,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:41:27,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 07:41:27,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:41:27,607 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:41:27,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [483745262] [2020-10-29 07:41:27,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:41:27,609 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:41:27,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760321933] [2020-10-29 07:41:27,612 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:41:27,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:41:27,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:41:27,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:41:27,617 INFO L87 Difference]: Start difference. First operand 692 states and 1013 transitions. Second operand 7 states. [2020-10-29 07:41:37,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:41:37,608 INFO L93 Difference]: Finished difference Result 1712 states and 2419 transitions. [2020-10-29 07:41:37,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:41:37,611 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 110 [2020-10-29 07:41:37,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:41:37,620 INFO L225 Difference]: With dead ends: 1712 [2020-10-29 07:41:37,621 INFO L226 Difference]: Without dead ends: 1026 [2020-10-29 07:41:37,624 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:41:37,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1026 states. [2020-10-29 07:41:37,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1026 to 1015. [2020-10-29 07:41:37,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1015 states. [2020-10-29 07:41:37,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1015 states to 1015 states and 1368 transitions. [2020-10-29 07:41:37,673 INFO L78 Accepts]: Start accepts. Automaton has 1015 states and 1368 transitions. Word has length 110 [2020-10-29 07:41:37,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:41:37,674 INFO L481 AbstractCegarLoop]: Abstraction has 1015 states and 1368 transitions. [2020-10-29 07:41:37,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:41:37,674 INFO L276 IsEmpty]: Start isEmpty. Operand 1015 states and 1368 transitions. [2020-10-29 07:41:37,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-29 07:41:37,678 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:41:37,678 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:41:37,679 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 07:41:37,679 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:41:37,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:41:37,680 INFO L82 PathProgramCache]: Analyzing trace with hash -656292705, now seen corresponding path program 1 times [2020-10-29 07:41:37,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:41:37,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1842586994] [2020-10-29 07:41:37,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:41:37,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:37,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:37,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:39,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:39,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 07:41:39,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:41:39,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1286 [2020-10-29 07:41:39,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:39,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:39,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:41:39,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:41:39,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 07:41:39,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:41:39,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:41:39,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:39,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:39,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:39,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:41:39,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:41:39,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 07:41:39,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:39,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:39,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:41:39,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:41:39,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:41:39,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:41:39,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:41:39,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:39,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:39,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:39,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 07:41:39,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:41:39,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-29 07:41:39,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:39,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:39,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:41:39,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:41:39,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 07:41:39,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:41:39,423 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:41:39,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1842586994] [2020-10-29 07:41:39,424 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:41:39,424 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:41:39,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874535357] [2020-10-29 07:41:39,426 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:41:39,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:41:39,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:41:39,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:41:39,428 INFO L87 Difference]: Start difference. First operand 1015 states and 1368 transitions. Second operand 7 states. [2020-10-29 07:41:48,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:41:48,366 INFO L93 Difference]: Finished difference Result 2397 states and 3410 transitions. [2020-10-29 07:41:48,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:41:48,372 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 115 [2020-10-29 07:41:48,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:41:48,383 INFO L225 Difference]: With dead ends: 2397 [2020-10-29 07:41:48,383 INFO L226 Difference]: Without dead ends: 1695 [2020-10-29 07:41:48,386 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:41:48,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1695 states. [2020-10-29 07:41:48,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1695 to 1344. [2020-10-29 07:41:48,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1344 states. [2020-10-29 07:41:48,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1344 states to 1344 states and 1741 transitions. [2020-10-29 07:41:48,444 INFO L78 Accepts]: Start accepts. Automaton has 1344 states and 1741 transitions. Word has length 115 [2020-10-29 07:41:48,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:41:48,445 INFO L481 AbstractCegarLoop]: Abstraction has 1344 states and 1741 transitions. [2020-10-29 07:41:48,445 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:41:48,445 INFO L276 IsEmpty]: Start isEmpty. Operand 1344 states and 1741 transitions. [2020-10-29 07:41:48,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-10-29 07:41:48,450 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:41:48,450 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:41:48,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 07:41:48,451 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:41:48,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:41:48,452 INFO L82 PathProgramCache]: Analyzing trace with hash 964107080, now seen corresponding path program 1 times [2020-10-29 07:41:48,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:41:48,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [255635418] [2020-10-29 07:41:48,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:41:48,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:48,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:48,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:49,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:49,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:49,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:51,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:51,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-10-29 07:41:51,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 07:41:51,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3172 [2020-10-29 07:41:51,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:51,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:51,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:41:51,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:41:51,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-29 07:41:51,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:41:51,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:41:51,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:51,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:51,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:51,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:41:51,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:41:51,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 07:41:51,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:51,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:51,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:41:51,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:41:51,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:41:51,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:41:51,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:41:51,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:51,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:52,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:52,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 07:41:52,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:41:52,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-29 07:41:52,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:52,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:52,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:41:52,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:41:52,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-29 07:41:52,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 07:41:52,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-29 07:41:52,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:52,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:52,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:52,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 07:41:52,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:41:52,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-29 07:41:52,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:52,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:52,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:41:52,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:41:52,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 07:41:52,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:41:52,475 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 67 proven. 74 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 07:41:52,475 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [255635418] [2020-10-29 07:41:52,476 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:41:52,476 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:41:52,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572402172] [2020-10-29 07:41:52,478 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:41:52,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:41:52,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:41:52,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:41:52,479 INFO L87 Difference]: Start difference. First operand 1344 states and 1741 transitions. Second operand 8 states. [2020-10-29 07:42:00,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:42:00,345 INFO L93 Difference]: Finished difference Result 3737 states and 4966 transitions. [2020-10-29 07:42:00,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 07:42:00,347 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 215 [2020-10-29 07:42:00,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:42:00,363 INFO L225 Difference]: With dead ends: 3737 [2020-10-29 07:42:00,363 INFO L226 Difference]: Without dead ends: 2399 [2020-10-29 07:42:00,368 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-29 07:42:00,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2399 states. [2020-10-29 07:42:00,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2399 to 2291. [2020-10-29 07:42:00,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2291 states. [2020-10-29 07:42:00,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2291 states to 2291 states and 2818 transitions. [2020-10-29 07:42:00,475 INFO L78 Accepts]: Start accepts. Automaton has 2291 states and 2818 transitions. Word has length 215 [2020-10-29 07:42:00,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:42:00,476 INFO L481 AbstractCegarLoop]: Abstraction has 2291 states and 2818 transitions. [2020-10-29 07:42:00,477 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:42:00,477 INFO L276 IsEmpty]: Start isEmpty. Operand 2291 states and 2818 transitions. [2020-10-29 07:42:00,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2020-10-29 07:42:00,484 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:42:00,485 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:42:00,485 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 07:42:00,485 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:42:00,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:42:00,486 INFO L82 PathProgramCache]: Analyzing trace with hash 228168118, now seen corresponding path program 1 times [2020-10-29 07:42:00,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:42:00,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1041583382] [2020-10-29 07:42:00,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:42:00,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:00,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:00,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:01,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:05,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:05,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 335 [2020-10-29 07:42:05,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:42:05,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 07:42:05,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:05,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:05,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:42:05,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:42:05,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-29 07:42:05,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:05,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:42:05,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:05,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:05,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:05,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:42:05,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:42:05,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 07:42:05,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:05,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:05,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:42:05,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:42:05,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:42:05,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:42:05,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:42:05,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:06,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:06,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:06,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 07:42:06,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:42:06,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 442 [2020-10-29 07:42:06,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:06,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:06,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:42:06,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:42:06,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-29 07:42:06,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 07:42:06,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-29 07:42:06,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:06,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:06,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:06,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 07:42:06,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:42:06,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-29 07:42:06,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:06,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:06,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:42:06,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-29 07:42:06,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:42:06,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:06,960 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 66 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 07:42:06,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1041583382] [2020-10-29 07:42:06,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:42:06,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:42:06,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613829198] [2020-10-29 07:42:06,962 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:42:06,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:42:06,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:42:06,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:42:06,963 INFO L87 Difference]: Start difference. First operand 2291 states and 2818 transitions. Second operand 7 states. [2020-10-29 07:42:18,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:42:18,153 INFO L93 Difference]: Finished difference Result 4964 states and 6048 transitions. [2020-10-29 07:42:18,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 07:42:18,163 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 321 [2020-10-29 07:42:18,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:42:18,181 INFO L225 Difference]: With dead ends: 4964 [2020-10-29 07:42:18,181 INFO L226 Difference]: Without dead ends: 2679 [2020-10-29 07:42:18,186 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:42:18,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2679 states. [2020-10-29 07:42:18,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2679 to 2602. [2020-10-29 07:42:18,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2602 states. [2020-10-29 07:42:18,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2602 states to 2602 states and 3139 transitions. [2020-10-29 07:42:18,260 INFO L78 Accepts]: Start accepts. Automaton has 2602 states and 3139 transitions. Word has length 321 [2020-10-29 07:42:18,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:42:18,261 INFO L481 AbstractCegarLoop]: Abstraction has 2602 states and 3139 transitions. [2020-10-29 07:42:18,261 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:42:18,262 INFO L276 IsEmpty]: Start isEmpty. Operand 2602 states and 3139 transitions. [2020-10-29 07:42:18,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2020-10-29 07:42:18,267 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:42:18,268 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:42:18,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 07:42:18,268 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:42:18,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:42:18,269 INFO L82 PathProgramCache]: Analyzing trace with hash 357121158, now seen corresponding path program 1 times [2020-10-29 07:42:18,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:42:18,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [670883529] [2020-10-29 07:42:18,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:42:18,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:18,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:18,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:18,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:19,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:23,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:23,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 350 [2020-10-29 07:42:23,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:42:23,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4690 [2020-10-29 07:42:23,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:23,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:23,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 07:42:23,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:42:23,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 341 [2020-10-29 07:42:23,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:23,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:42:23,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:23,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:23,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:23,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:42:23,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:42:23,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 07:42:23,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:23,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:23,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:42:23,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:42:23,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:42:23,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:23,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:42:23,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:23,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:23,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:23,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:23,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 07:42:23,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:42:23,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 253 [2020-10-29 07:42:23,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:23,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:23,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:42:23,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:42:23,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 07:42:23,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:42:23,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-29 07:42:23,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:23,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:23,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:24,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:24,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 07:42:24,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:42:24,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 936 [2020-10-29 07:42:24,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:24,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:24,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:42:24,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:42:24,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-29 07:42:24,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:24,853 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 58 proven. 11 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-29 07:42:24,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [670883529] [2020-10-29 07:42:24,854 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:42:24,854 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:42:24,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049994321] [2020-10-29 07:42:24,855 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:42:24,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:42:24,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:42:24,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:42:24,856 INFO L87 Difference]: Start difference. First operand 2602 states and 3139 transitions. Second operand 7 states. [2020-10-29 07:42:40,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:42:40,989 INFO L93 Difference]: Finished difference Result 6791 states and 8623 transitions. [2020-10-29 07:42:40,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 07:42:40,991 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 336 [2020-10-29 07:42:40,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:42:41,014 INFO L225 Difference]: With dead ends: 6791 [2020-10-29 07:42:41,014 INFO L226 Difference]: Without dead ends: 4502 [2020-10-29 07:42:41,021 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-10-29 07:42:41,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4502 states. [2020-10-29 07:42:41,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4502 to 3852. [2020-10-29 07:42:41,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3852 states. [2020-10-29 07:42:41,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3852 states to 3852 states and 4850 transitions. [2020-10-29 07:42:41,137 INFO L78 Accepts]: Start accepts. Automaton has 3852 states and 4850 transitions. Word has length 336 [2020-10-29 07:42:41,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:42:41,138 INFO L481 AbstractCegarLoop]: Abstraction has 3852 states and 4850 transitions. [2020-10-29 07:42:41,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:42:41,138 INFO L276 IsEmpty]: Start isEmpty. Operand 3852 states and 4850 transitions. [2020-10-29 07:42:41,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2020-10-29 07:42:41,147 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:42:41,148 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:42:41,148 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 07:42:41,148 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:42:41,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:42:41,149 INFO L82 PathProgramCache]: Analyzing trace with hash -2119352446, now seen corresponding path program 1 times [2020-10-29 07:42:41,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:42:41,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1621886151] [2020-10-29 07:42:41,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:42:41,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:41,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:41,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:42,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:43,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:43,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 439 [2020-10-29 07:42:43,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:42:43,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2591 [2020-10-29 07:42:43,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:43,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:43,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:42:43,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-29 07:42:43,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-29 07:42:43,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:44,068 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-29 07:42:44,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:42:44,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:44,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:44,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:44,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:42:44,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:42:44,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:42:44,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:44,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:44,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:42:44,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:42:44,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:42:44,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 07:42:44,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:42:44,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:44,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:44,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:44,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:42:44,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:42:44,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 259 [2020-10-29 07:42:44,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:44,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:44,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:42:44,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:42:44,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-29 07:42:44,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:44,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 07:42:44,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:44,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:44,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:44,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:42:44,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:42:44,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 226 [2020-10-29 07:42:44,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:44,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:44,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:42:44,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:42:44,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 07:42:44,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:45,142 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 173 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:42:45,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1621886151] [2020-10-29 07:42:45,142 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:42:45,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:42:45,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261188262] [2020-10-29 07:42:45,143 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:42:45,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:42:45,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:42:45,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:42:45,145 INFO L87 Difference]: Start difference. First operand 3852 states and 4850 transitions. Second operand 7 states. [2020-10-29 07:42:56,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:42:56,527 INFO L93 Difference]: Finished difference Result 9999 states and 13075 transitions. [2020-10-29 07:42:56,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:42:56,528 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 425 [2020-10-29 07:42:56,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:42:56,563 INFO L225 Difference]: With dead ends: 9999 [2020-10-29 07:42:56,564 INFO L226 Difference]: Without dead ends: 6460 [2020-10-29 07:42:56,576 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:42:56,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6460 states. [2020-10-29 07:42:56,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6460 to 5480. [2020-10-29 07:42:56,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5480 states. [2020-10-29 07:42:56,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5480 states to 5480 states and 6705 transitions. [2020-10-29 07:42:56,818 INFO L78 Accepts]: Start accepts. Automaton has 5480 states and 6705 transitions. Word has length 425 [2020-10-29 07:42:56,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:42:56,819 INFO L481 AbstractCegarLoop]: Abstraction has 5480 states and 6705 transitions. [2020-10-29 07:42:56,819 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:42:56,819 INFO L276 IsEmpty]: Start isEmpty. Operand 5480 states and 6705 transitions. [2020-10-29 07:42:56,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2020-10-29 07:42:56,830 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:42:56,831 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:42:56,831 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 07:42:56,831 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:42:56,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:42:56,832 INFO L82 PathProgramCache]: Analyzing trace with hash -1007456699, now seen corresponding path program 1 times [2020-10-29 07:42:56,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:42:56,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [225395074] [2020-10-29 07:42:56,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:42:56,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:57,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:57,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:57,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:58,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:00,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:00,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:01,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:01,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 462 [2020-10-29 07:43:01,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 07:43:01,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-29 07:43:01,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:01,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:01,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:43:01,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-29 07:43:01,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 315 [2020-10-29 07:43:01,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:02,166 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-29 07:43:02,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:43:02,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:02,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:02,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:02,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:43:02,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:02,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 07:43:02,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:02,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:02,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:43:02,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:43:02,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:43:02,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:02,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:43:02,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:02,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:02,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:02,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 07:43:02,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:02,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-29 07:43:02,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:02,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:02,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:43:02,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:43:02,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 07:43:02,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:02,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-29 07:43:02,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:02,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:02,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:02,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:02,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 07:43:02,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:43:02,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 308 [2020-10-29 07:43:02,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:02,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:02,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:43:02,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:43:02,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-29 07:43:02,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:02,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-10-29 07:43:02,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:02,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:02,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:02,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:43:02,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:02,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-29 07:43:02,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:02,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:02,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:43:02,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:43:02,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 07:43:02,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:03,217 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 283 proven. 4 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-29 07:43:03,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [225395074] [2020-10-29 07:43:03,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:43:03,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:43:03,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435014834] [2020-10-29 07:43:03,219 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:43:03,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:43:03,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:43:03,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:43:03,220 INFO L87 Difference]: Start difference. First operand 5480 states and 6705 transitions. Second operand 7 states. [2020-10-29 07:43:21,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:43:21,476 INFO L93 Difference]: Finished difference Result 13527 states and 17100 transitions. [2020-10-29 07:43:21,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:43:21,478 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 446 [2020-10-29 07:43:21,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:43:21,523 INFO L225 Difference]: With dead ends: 13527 [2020-10-29 07:43:21,523 INFO L226 Difference]: Without dead ends: 7712 [2020-10-29 07:43:21,536 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:43:21,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7712 states. [2020-10-29 07:43:21,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7712 to 7071. [2020-10-29 07:43:21,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7071 states. [2020-10-29 07:43:21,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7071 states to 7071 states and 8309 transitions. [2020-10-29 07:43:21,756 INFO L78 Accepts]: Start accepts. Automaton has 7071 states and 8309 transitions. Word has length 446 [2020-10-29 07:43:21,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:43:21,756 INFO L481 AbstractCegarLoop]: Abstraction has 7071 states and 8309 transitions. [2020-10-29 07:43:21,756 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:43:21,757 INFO L276 IsEmpty]: Start isEmpty. Operand 7071 states and 8309 transitions. [2020-10-29 07:43:21,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 509 [2020-10-29 07:43:21,770 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:43:21,772 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:43:21,773 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 07:43:21,773 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:43:21,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:43:21,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1042910094, now seen corresponding path program 1 times [2020-10-29 07:43:21,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:43:21,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [538383560] [2020-10-29 07:43:21,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:43:21,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:21,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:22,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:23,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:24,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:26,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:26,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 524 [2020-10-29 07:43:26,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:43:26,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-29 07:43:26,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:26,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:26,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:43:26,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-29 07:43:26,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-29 07:43:26,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:27,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:43:27,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:27,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:27,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:27,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:43:27,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:27,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:43:27,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:27,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:27,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:43:27,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:43:27,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:43:27,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:27,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:43:27,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:27,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:27,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:27,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:43:27,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:27,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-29 07:43:27,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:27,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:27,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:43:27,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:43:27,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-29 07:43:27,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:27,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 07:43:27,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:27,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:27,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:27,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:43:27,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:27,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-29 07:43:27,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:27,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:27,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:43:27,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:43:27,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-29 07:43:27,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:27,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-29 07:43:27,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:27,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:27,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:27,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-29 07:43:27,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:27,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-29 07:43:27,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:27,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:27,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:43:27,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-29 07:43:27,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:43:27,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:28,299 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 211 proven. 81 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-10-29 07:43:28,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [538383560] [2020-10-29 07:43:28,300 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:43:28,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:43:28,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184203299] [2020-10-29 07:43:28,301 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:43:28,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:43:28,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:43:28,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:43:28,302 INFO L87 Difference]: Start difference. First operand 7071 states and 8309 transitions. Second operand 7 states. [2020-10-29 07:43:38,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:43:38,875 INFO L93 Difference]: Finished difference Result 15158 states and 17788 transitions. [2020-10-29 07:43:38,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:43:38,878 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 508 [2020-10-29 07:43:38,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:43:38,905 INFO L225 Difference]: With dead ends: 15158 [2020-10-29 07:43:38,905 INFO L226 Difference]: Without dead ends: 8400 [2020-10-29 07:43:38,922 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:43:38,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8400 states. [2020-10-29 07:43:39,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8400 to 8028. [2020-10-29 07:43:39,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8028 states. [2020-10-29 07:43:39,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8028 states to 8028 states and 9239 transitions. [2020-10-29 07:43:39,122 INFO L78 Accepts]: Start accepts. Automaton has 8028 states and 9239 transitions. Word has length 508 [2020-10-29 07:43:39,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:43:39,123 INFO L481 AbstractCegarLoop]: Abstraction has 8028 states and 9239 transitions. [2020-10-29 07:43:39,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:43:39,124 INFO L276 IsEmpty]: Start isEmpty. Operand 8028 states and 9239 transitions. [2020-10-29 07:43:39,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 521 [2020-10-29 07:43:39,138 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:43:39,139 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:43:39,139 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 07:43:39,140 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:43:39,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:43:39,140 INFO L82 PathProgramCache]: Analyzing trace with hash 34819222, now seen corresponding path program 1 times [2020-10-29 07:43:39,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:43:39,141 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1510537375] [2020-10-29 07:43:39,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:43:39,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:39,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:39,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:40,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:41,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:41,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 536 [2020-10-29 07:43:41,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:43:41,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2538 [2020-10-29 07:43:41,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:41,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:41,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:43:41,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-29 07:43:41,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-29 07:43:41,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:42,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:43:42,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:42,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:42,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:42,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:43:42,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:42,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:43:42,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:42,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:42,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:43:42,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:43:42,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:43:42,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:42,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:43:42,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:42,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:42,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:42,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:43:42,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:42,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-29 07:43:42,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:42,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:42,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:43:42,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:43:42,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:43:42,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:42,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:43:42,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:42,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:42,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:42,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:43:42,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:42,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-29 07:43:42,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:42,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:42,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:43:42,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:43:42,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:43:42,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:42,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-29 07:43:42,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:42,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:42,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:42,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-29 07:43:42,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:42,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-29 07:43:42,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:42,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:42,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:43:42,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:43:42,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-29 07:43:42,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:42,911 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 262 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-29 07:43:42,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1510537375] [2020-10-29 07:43:42,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:43:42,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:43:42,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416917447] [2020-10-29 07:43:42,913 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:43:42,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:43:42,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:43:42,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:43:42,914 INFO L87 Difference]: Start difference. First operand 8028 states and 9239 transitions. Second operand 7 states. [2020-10-29 07:43:45,132 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-29 07:43:55,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:43:55,498 INFO L93 Difference]: Finished difference Result 18915 states and 22525 transitions. [2020-10-29 07:43:55,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:43:55,500 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 520 [2020-10-29 07:43:55,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:43:55,537 INFO L225 Difference]: With dead ends: 18915 [2020-10-29 07:43:55,538 INFO L226 Difference]: Without dead ends: 11200 [2020-10-29 07:43:55,557 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:43:55,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11200 states. [2020-10-29 07:43:55,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11200 to 10856. [2020-10-29 07:43:55,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10856 states. [2020-10-29 07:43:55,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10856 states to 10856 states and 12432 transitions. [2020-10-29 07:43:55,857 INFO L78 Accepts]: Start accepts. Automaton has 10856 states and 12432 transitions. Word has length 520 [2020-10-29 07:43:55,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:43:55,858 INFO L481 AbstractCegarLoop]: Abstraction has 10856 states and 12432 transitions. [2020-10-29 07:43:55,859 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:43:55,859 INFO L276 IsEmpty]: Start isEmpty. Operand 10856 states and 12432 transitions. [2020-10-29 07:43:55,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 594 [2020-10-29 07:43:55,871 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:43:55,873 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:43:55,873 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 07:43:55,874 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:43:55,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:43:55,874 INFO L82 PathProgramCache]: Analyzing trace with hash -630574655, now seen corresponding path program 1 times [2020-10-29 07:43:55,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:43:55,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1056106563] [2020-10-29 07:43:55,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:43:56,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:56,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:56,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:57,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:00,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:01,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:01,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 611 [2020-10-29 07:44:01,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:44:01,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 07:44:01,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:01,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:01,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:44:01,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-29 07:44:01,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 07:44:01,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:01,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:44:01,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:01,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:01,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:01,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:44:01,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:44:01,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 07:44:01,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:01,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:01,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:44:01,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:44:01,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:44:01,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:01,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:44:01,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:01,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:01,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:01,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:44:01,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:44:01,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-29 07:44:01,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:01,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:01,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:44:01,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:44:01,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:44:01,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:01,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:44:01,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:01,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:01,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:01,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:44:01,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:44:01,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-29 07:44:01,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:01,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:01,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:44:01,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:44:01,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:44:01,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:01,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-29 07:44:01,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:01,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:01,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:01,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 07:44:01,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:44:01,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-29 07:44:01,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:01,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:01,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:44:01,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:44:01,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 07:44:01,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:01,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-10-29 07:44:01,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:01,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:01,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:01,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 07:44:01,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:44:01,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-29 07:44:01,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:01,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:01,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:44:01,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-29 07:44:01,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:44:01,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:02,162 INFO L134 CoverageAnalysis]: Checked inductivity of 622 backedges. 277 proven. 68 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2020-10-29 07:44:02,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1056106563] [2020-10-29 07:44:02,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:44:02,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:44:02,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507954901] [2020-10-29 07:44:02,164 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:44:02,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:44:02,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:44:02,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:44:02,165 INFO L87 Difference]: Start difference. First operand 10856 states and 12432 transitions. Second operand 7 states. [2020-10-29 07:44:13,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:44:13,871 INFO L93 Difference]: Finished difference Result 25053 states and 29994 transitions. [2020-10-29 07:44:13,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:44:13,873 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 593 [2020-10-29 07:44:13,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:44:13,924 INFO L225 Difference]: With dead ends: 25053 [2020-10-29 07:44:13,924 INFO L226 Difference]: Without dead ends: 14510 [2020-10-29 07:44:13,950 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:44:13,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14510 states. [2020-10-29 07:44:14,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14510 to 13464. [2020-10-29 07:44:14,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13464 states. [2020-10-29 07:44:14,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13464 states to 13464 states and 15602 transitions. [2020-10-29 07:44:14,305 INFO L78 Accepts]: Start accepts. Automaton has 13464 states and 15602 transitions. Word has length 593 [2020-10-29 07:44:14,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:44:14,306 INFO L481 AbstractCegarLoop]: Abstraction has 13464 states and 15602 transitions. [2020-10-29 07:44:14,306 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:44:14,306 INFO L276 IsEmpty]: Start isEmpty. Operand 13464 states and 15602 transitions. [2020-10-29 07:44:14,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 593 [2020-10-29 07:44:14,317 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:44:14,318 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:44:14,318 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 07:44:14,318 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:44:14,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:44:14,319 INFO L82 PathProgramCache]: Analyzing trace with hash -956829833, now seen corresponding path program 1 times [2020-10-29 07:44:14,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:44:14,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1741688994] [2020-10-29 07:44:14,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:44:14,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:14,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:14,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:17,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:17,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 608 [2020-10-29 07:44:17,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:44:17,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3013 [2020-10-29 07:44:17,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:17,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:17,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:44:17,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-29 07:44:17,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-29 07:44:17,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:17,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:44:17,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:17,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:17,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:17,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:44:17,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:44:17,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:44:17,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:17,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:17,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:44:17,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:44:17,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:44:17,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:17,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:44:17,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:17,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:17,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:17,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:44:17,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:44:17,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-29 07:44:17,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:17,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:17,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:44:17,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:44:17,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:44:17,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:17,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:44:17,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:17,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:17,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:17,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:44:17,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:44:17,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-29 07:44:17,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:17,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:17,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:44:17,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:44:17,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:44:17,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:18,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-29 07:44:18,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:18,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:18,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:18,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-29 07:44:18,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:44:18,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-29 07:44:18,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:18,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:18,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:44:18,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:44:18,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-29 07:44:18,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:18,752 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 363 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-29 07:44:18,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1741688994] [2020-10-29 07:44:18,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:44:18,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:44:18,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831825043] [2020-10-29 07:44:18,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:44:18,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:44:18,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:44:18,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:44:18,757 INFO L87 Difference]: Start difference. First operand 13464 states and 15602 transitions. Second operand 7 states. [2020-10-29 07:44:18,928 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-29 07:44:34,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:44:34,699 INFO L93 Difference]: Finished difference Result 28518 states and 33789 transitions. [2020-10-29 07:44:34,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:44:34,702 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 592 [2020-10-29 07:44:34,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:44:34,754 INFO L225 Difference]: With dead ends: 28518 [2020-10-29 07:44:34,755 INFO L226 Difference]: Without dead ends: 15367 [2020-10-29 07:44:34,781 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:44:34,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15367 states. [2020-10-29 07:44:35,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15367 to 14091. [2020-10-29 07:44:35,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14091 states. [2020-10-29 07:44:35,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14091 states to 14091 states and 16439 transitions. [2020-10-29 07:44:35,132 INFO L78 Accepts]: Start accepts. Automaton has 14091 states and 16439 transitions. Word has length 592 [2020-10-29 07:44:35,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:44:35,133 INFO L481 AbstractCegarLoop]: Abstraction has 14091 states and 16439 transitions. [2020-10-29 07:44:35,133 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:44:35,133 INFO L276 IsEmpty]: Start isEmpty. Operand 14091 states and 16439 transitions. [2020-10-29 07:44:35,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 628 [2020-10-29 07:44:35,145 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:44:35,146 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:44:35,146 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 07:44:35,146 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:44:35,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:44:35,147 INFO L82 PathProgramCache]: Analyzing trace with hash -1350833005, now seen corresponding path program 1 times [2020-10-29 07:44:35,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:44:35,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [478446644] [2020-10-29 07:44:35,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:44:35,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:35,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:35,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:37,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:38,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:38,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 643 [2020-10-29 07:44:38,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:44:38,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3226 [2020-10-29 07:44:38,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:38,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:38,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:44:38,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-29 07:44:38,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 192 [2020-10-29 07:44:38,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:38,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:44:38,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:38,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:38,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:38,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:44:38,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:44:38,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:44:38,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:38,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:38,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:44:38,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:44:38,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:44:38,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:38,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:44:38,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:38,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:38,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:38,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:44:38,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:44:38,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-29 07:44:38,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:38,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:38,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:44:38,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:44:38,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:44:38,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:38,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:44:38,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:39,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:39,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:39,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:44:39,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:44:39,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-29 07:44:39,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:39,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:39,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:44:39,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:44:39,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:44:39,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:39,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-29 07:44:39,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:39,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:39,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:39,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-10-29 07:44:39,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:44:39,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-29 07:44:39,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:39,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:39,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:44:39,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:44:39,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-29 07:44:39,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:39,792 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 398 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-29 07:44:39,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [478446644] [2020-10-29 07:44:39,793 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:44:39,793 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:44:39,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647119436] [2020-10-29 07:44:39,793 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:44:39,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:44:39,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:44:39,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:44:39,795 INFO L87 Difference]: Start difference. First operand 14091 states and 16439 transitions. Second operand 7 states.