/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 08:12:18,480 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 08:12:18,483 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 08:12:18,539 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 08:12:18,540 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 08:12:18,546 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 08:12:18,548 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 08:12:18,553 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 08:12:18,556 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 08:12:18,557 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 08:12:18,558 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 08:12:18,559 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 08:12:18,560 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 08:12:18,561 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 08:12:18,562 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 08:12:18,564 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 08:12:18,565 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 08:12:18,566 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 08:12:18,568 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 08:12:18,570 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 08:12:18,572 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 08:12:18,573 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 08:12:18,575 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 08:12:18,576 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 08:12:18,590 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 08:12:18,590 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 08:12:18,590 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 08:12:18,592 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 08:12:18,592 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 08:12:18,594 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 08:12:18,594 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 08:12:18,595 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 08:12:18,596 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 08:12:18,597 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 08:12:18,598 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 08:12:18,598 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 08:12:18,599 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 08:12:18,599 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 08:12:18,599 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 08:12:18,600 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 08:12:18,601 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 08:12:18,602 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 08:12:18,628 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 08:12:18,629 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 08:12:18,630 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 08:12:18,630 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 08:12:18,631 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 08:12:18,631 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 08:12:18,631 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 08:12:18,631 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 08:12:18,631 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 08:12:18,632 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 08:12:18,632 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 08:12:18,632 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 08:12:18,632 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 08:12:18,632 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 08:12:18,633 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 08:12:18,633 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 08:12:18,633 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 08:12:18,633 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 08:12:18,633 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 08:12:18,634 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 08:12:18,634 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 08:12:18,634 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 08:12:18,634 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 08:12:18,635 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 08:12:18,635 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 08:12:18,635 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 08:12:18,635 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 08:12:18,635 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 08:12:18,636 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 08:12:18,636 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 08:12:18,997 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 08:12:19,028 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 08:12:19,034 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 08:12:19,035 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 08:12:19,036 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 08:12:19,037 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label10.c [2020-10-29 08:12:19,128 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3b1b62519/09c6b286741b451ba184046c9a4fa8ec/FLAGb0cdf416e [2020-10-29 08:12:20,020 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 08:12:20,021 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label10.c [2020-10-29 08:12:20,052 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3b1b62519/09c6b286741b451ba184046c9a4fa8ec/FLAGb0cdf416e [2020-10-29 08:12:20,122 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3b1b62519/09c6b286741b451ba184046c9a4fa8ec [2020-10-29 08:12:20,127 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 08:12:20,135 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 08:12:20,137 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 08:12:20,137 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 08:12:20,141 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 08:12:20,142 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:12:20" (1/1) ... [2020-10-29 08:12:20,147 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7954a7e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:12:20, skipping insertion in model container [2020-10-29 08:12:20,147 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:12:20" (1/1) ... [2020-10-29 08:12:20,155 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 08:12:20,286 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 08:12:21,635 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:12:21,650 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 08:12:22,047 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:12:22,075 INFO L208 MainTranslator]: Completed translation [2020-10-29 08:12:22,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:12:22 WrapperNode [2020-10-29 08:12:22,076 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 08:12:22,077 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 08:12:22,077 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 08:12:22,078 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 08:12:22,093 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:12:22" (1/1) ... [2020-10-29 08:12:22,096 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:12:22" (1/1) ... [2020-10-29 08:12:22,175 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:12:22" (1/1) ... [2020-10-29 08:12:22,175 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:12:22" (1/1) ... [2020-10-29 08:12:22,337 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:12:22" (1/1) ... [2020-10-29 08:12:22,374 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:12:22" (1/1) ... [2020-10-29 08:12:22,397 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:12:22" (1/1) ... [2020-10-29 08:12:22,423 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 08:12:22,424 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 08:12:22,424 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 08:12:22,424 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 08:12:22,425 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:12:22" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 08:12:22,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 08:12:22,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 08:12:22,512 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 08:12:22,512 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 08:12:22,512 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 08:12:22,513 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 08:12:22,513 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 08:12:22,513 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 08:12:22,513 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 08:12:22,513 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 08:12:22,514 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 08:12:22,515 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 08:12:22,515 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 08:12:22,515 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 08:12:22,515 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 08:12:22,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 08:12:22,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 08:12:22,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 08:12:22,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 08:12:22,517 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 08:12:22,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 08:12:31,905 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 08:12:31,905 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 08:12:31,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:12:31 BoogieIcfgContainer [2020-10-29 08:12:31,908 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 08:12:31,912 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 08:12:31,912 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 08:12:31,917 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 08:12:31,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 08:12:20" (1/3) ... [2020-10-29 08:12:31,918 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@794524b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:12:31, skipping insertion in model container [2020-10-29 08:12:31,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:12:22" (2/3) ... [2020-10-29 08:12:31,919 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@794524b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:12:31, skipping insertion in model container [2020-10-29 08:12:31,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:12:31" (3/3) ... [2020-10-29 08:12:31,921 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem17_label10.c [2020-10-29 08:12:31,934 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 08:12:31,940 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 08:12:31,955 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 08:12:31,989 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 08:12:31,989 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 08:12:31,989 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 08:12:31,989 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 08:12:31,989 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 08:12:31,990 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 08:12:31,990 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 08:12:31,990 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 08:12:32,023 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states. [2020-10-29 08:12:32,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-29 08:12:32,031 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:12:32,032 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:12:32,033 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:12:32,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:12:32,040 INFO L82 PathProgramCache]: Analyzing trace with hash -242180614, now seen corresponding path program 1 times [2020-10-29 08:12:32,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:12:32,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1615606044] [2020-10-29 08:12:32,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:12:32,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:12:32,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:12:32,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:12:32,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-29 08:12:32,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:12:32,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 550 [2020-10-29 08:12:32,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:12:32,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:12:32,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:12:32,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:12:32,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-29 08:12:32,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 08:12:32,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:12:32,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:12:32,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:12:33,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:12:33,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:12:33,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:12:33,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-29 08:12:33,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:12:33,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:12:33,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:12:33,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:12:33,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:12:33,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:12:33,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:12:33,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1615606044] [2020-10-29 08:12:33,092 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:12:33,092 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 08:12:33,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007131802] [2020-10-29 08:12:33,099 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 08:12:33,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:12:33,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 08:12:33,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 08:12:33,124 INFO L87 Difference]: Start difference. First operand 607 states. Second operand 4 states. [2020-10-29 08:12:46,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:12:46,535 INFO L93 Difference]: Finished difference Result 1694 states and 3092 transitions. [2020-10-29 08:12:46,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:12:46,537 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-10-29 08:12:46,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:12:46,566 INFO L225 Difference]: With dead ends: 1694 [2020-10-29 08:12:46,566 INFO L226 Difference]: Without dead ends: 1010 [2020-10-29 08:12:46,581 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:12:46,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1010 states. [2020-10-29 08:12:46,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1010 to 992. [2020-10-29 08:12:46,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 992 states. [2020-10-29 08:12:46,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 992 states to 992 states and 1527 transitions. [2020-10-29 08:12:46,701 INFO L78 Accepts]: Start accepts. Automaton has 992 states and 1527 transitions. Word has length 46 [2020-10-29 08:12:46,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:12:46,702 INFO L481 AbstractCegarLoop]: Abstraction has 992 states and 1527 transitions. [2020-10-29 08:12:46,702 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 08:12:46,702 INFO L276 IsEmpty]: Start isEmpty. Operand 992 states and 1527 transitions. [2020-10-29 08:12:46,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-29 08:12:46,709 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:12:46,709 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:12:46,709 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 08:12:46,710 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:12:46,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:12:46,711 INFO L82 PathProgramCache]: Analyzing trace with hash -749184518, now seen corresponding path program 1 times [2020-10-29 08:12:46,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:12:46,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [133956395] [2020-10-29 08:12:46,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:12:46,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:12:46,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:12:47,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:12:48,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:12:48,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:12:48,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-29 08:12:48,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:12:48,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1600 [2020-10-29 08:12:48,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:12:48,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:12:48,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 08:12:48,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:12:48,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-29 08:12:48,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 08:12:48,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:12:48,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:12:48,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:12:48,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:12:48,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:12:48,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:12:48,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 08:12:48,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:12:48,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:12:48,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:12:48,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:12:48,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:12:48,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-29 08:12:48,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:12:48,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:12:48,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:12:48,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:12:48,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:12:48,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 08:12:48,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:12:48,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 268 [2020-10-29 08:12:48,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:12:48,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:12:48,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:12:48,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:12:48,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 08:12:48,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:12:49,048 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 08:12:49,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [133956395] [2020-10-29 08:12:49,049 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:12:49,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 08:12:49,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304713212] [2020-10-29 08:12:49,053 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 08:12:49,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:12:49,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 08:12:49,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 08:12:49,057 INFO L87 Difference]: Start difference. First operand 992 states and 1527 transitions. Second operand 6 states. [2020-10-29 08:13:02,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:13:02,939 INFO L93 Difference]: Finished difference Result 2453 states and 3905 transitions. [2020-10-29 08:13:02,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 08:13:02,940 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 117 [2020-10-29 08:13:02,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:13:02,949 INFO L225 Difference]: With dead ends: 2453 [2020-10-29 08:13:02,949 INFO L226 Difference]: Without dead ends: 1467 [2020-10-29 08:13:02,953 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:13:02,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1467 states. [2020-10-29 08:13:02,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1467 to 1453. [2020-10-29 08:13:02,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1453 states. [2020-10-29 08:13:03,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1453 states to 1453 states and 1974 transitions. [2020-10-29 08:13:03,000 INFO L78 Accepts]: Start accepts. Automaton has 1453 states and 1974 transitions. Word has length 117 [2020-10-29 08:13:03,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:13:03,001 INFO L481 AbstractCegarLoop]: Abstraction has 1453 states and 1974 transitions. [2020-10-29 08:13:03,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 08:13:03,001 INFO L276 IsEmpty]: Start isEmpty. Operand 1453 states and 1974 transitions. [2020-10-29 08:13:03,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-29 08:13:03,005 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:13:03,005 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:13:03,005 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 08:13:03,005 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:13:03,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:13:03,006 INFO L82 PathProgramCache]: Analyzing trace with hash 669638343, now seen corresponding path program 1 times [2020-10-29 08:13:03,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:13:03,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1758647184] [2020-10-29 08:13:03,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:13:03,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:13:03,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:13:03,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:13:04,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:13:04,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 08:13:04,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:13:04,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1171 [2020-10-29 08:13:04,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:13:04,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:13:04,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 08:13:04,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:13:04,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-29 08:13:04,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:13:04,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:13:04,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:13:04,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:13:04,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:13:04,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:13:04,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:13:04,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 08:13:04,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:13:04,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:13:04,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:13:04,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:13:04,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:13:04,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:13:04,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:13:04,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:13:04,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:13:04,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:13:04,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 08:13:04,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:13:04,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-29 08:13:04,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:13:04,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:13:04,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 08:13:04,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:13:04,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 08:13:04,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:13:05,038 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 10 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:13:05,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1758647184] [2020-10-29 08:13:05,039 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:13:05,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:13:05,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855985628] [2020-10-29 08:13:05,041 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 08:13:05,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:13:05,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 08:13:05,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:13:05,046 INFO L87 Difference]: Start difference. First operand 1453 states and 1974 transitions. Second operand 8 states. [2020-10-29 08:13:22,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:13:22,365 INFO L93 Difference]: Finished difference Result 2530 states and 3553 transitions. [2020-10-29 08:13:22,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 08:13:22,375 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 120 [2020-10-29 08:13:22,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:13:22,383 INFO L225 Difference]: With dead ends: 2530 [2020-10-29 08:13:22,384 INFO L226 Difference]: Without dead ends: 1485 [2020-10-29 08:13:22,388 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-29 08:13:22,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1485 states. [2020-10-29 08:13:22,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1485 to 1458. [2020-10-29 08:13:22,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1458 states. [2020-10-29 08:13:22,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1458 states to 1458 states and 1962 transitions. [2020-10-29 08:13:22,438 INFO L78 Accepts]: Start accepts. Automaton has 1458 states and 1962 transitions. Word has length 120 [2020-10-29 08:13:22,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:13:22,441 INFO L481 AbstractCegarLoop]: Abstraction has 1458 states and 1962 transitions. [2020-10-29 08:13:22,441 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 08:13:22,445 INFO L276 IsEmpty]: Start isEmpty. Operand 1458 states and 1962 transitions. [2020-10-29 08:13:22,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-29 08:13:22,453 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:13:22,453 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:13:22,454 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 08:13:22,454 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:13:22,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:13:22,455 INFO L82 PathProgramCache]: Analyzing trace with hash -2030570662, now seen corresponding path program 1 times [2020-10-29 08:13:22,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:13:22,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [574875939] [2020-10-29 08:13:22,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:13:22,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:13:22,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:13:22,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:13:22,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-29 08:13:22,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:13:22,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 344 [2020-10-29 08:13:22,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:13:22,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:13:22,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:13:22,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-29 08:13:22,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 08:13:22,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:13:23,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:13:23,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:13:23,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:13:23,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:13:23,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:13:23,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:13:23,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 08:13:23,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:13:23,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:13:23,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:13:23,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:13:23,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:13:23,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:13:23,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:13:23,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:13:23,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:13:23,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:13:23,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:13:23,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:13:23,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-29 08:13:23,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:13:23,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:13:23,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:13:23,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:13:23,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 08:13:23,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:13:23,335 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 37 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:13:23,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [574875939] [2020-10-29 08:13:23,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:13:23,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 08:13:23,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329193316] [2020-10-29 08:13:23,338 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 08:13:23,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:13:23,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 08:13:23,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:13:23,351 INFO L87 Difference]: Start difference. First operand 1458 states and 1962 transitions. Second operand 5 states. [2020-10-29 08:13:36,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:13:36,446 INFO L93 Difference]: Finished difference Result 3415 states and 4917 transitions. [2020-10-29 08:13:36,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:13:36,452 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 133 [2020-10-29 08:13:36,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:13:36,469 INFO L225 Difference]: With dead ends: 3415 [2020-10-29 08:13:36,469 INFO L226 Difference]: Without dead ends: 2396 [2020-10-29 08:13:36,473 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 08:13:36,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2396 states. [2020-10-29 08:13:36,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2396 to 2390. [2020-10-29 08:13:36,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2390 states. [2020-10-29 08:13:36,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2390 states to 2390 states and 3104 transitions. [2020-10-29 08:13:36,575 INFO L78 Accepts]: Start accepts. Automaton has 2390 states and 3104 transitions. Word has length 133 [2020-10-29 08:13:36,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:13:36,576 INFO L481 AbstractCegarLoop]: Abstraction has 2390 states and 3104 transitions. [2020-10-29 08:13:36,576 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 08:13:36,576 INFO L276 IsEmpty]: Start isEmpty. Operand 2390 states and 3104 transitions. [2020-10-29 08:13:36,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-10-29 08:13:36,582 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:13:36,583 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:13:36,583 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 08:13:36,583 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:13:36,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:13:36,584 INFO L82 PathProgramCache]: Analyzing trace with hash -173214666, now seen corresponding path program 1 times [2020-10-29 08:13:36,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:13:36,585 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1778406170] [2020-10-29 08:13:36,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:13:36,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:13:36,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:13:37,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:13:38,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:13:38,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-29 08:13:38,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:13:38,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1467 [2020-10-29 08:13:38,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:13:38,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:13:38,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:13:38,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-29 08:13:38,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 08:13:38,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:13:38,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:13:38,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:13:38,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:13:38,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:13:38,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:13:38,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:13:38,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 08:13:38,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:13:38,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:13:38,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:13:38,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:13:38,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:13:38,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:13:38,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:13:38,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:13:38,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:13:38,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:13:38,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:13:38,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:13:38,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-29 08:13:38,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:13:38,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:13:38,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:13:38,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:13:38,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 08:13:38,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-29 08:13:38,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:13:38,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:13:38,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:13:38,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:13:38,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 08:13:38,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:13:38,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-29 08:13:38,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:13:38,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:13:38,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:13:38,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:13:38,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 08:13:38,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:13:38,791 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 146 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 08:13:38,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1778406170] [2020-10-29 08:13:38,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:13:38,793 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:13:38,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308235331] [2020-10-29 08:13:38,794 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:13:38,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:13:38,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:13:38,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:13:38,796 INFO L87 Difference]: Start difference. First operand 2390 states and 3104 transitions. Second operand 7 states. [2020-10-29 08:13:55,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:13:55,756 INFO L93 Difference]: Finished difference Result 6294 states and 9026 transitions. [2020-10-29 08:13:55,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:13:55,758 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 206 [2020-10-29 08:13:55,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:13:55,798 INFO L225 Difference]: With dead ends: 6294 [2020-10-29 08:13:55,798 INFO L226 Difference]: Without dead ends: 4343 [2020-10-29 08:13:55,810 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:13:55,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4343 states. [2020-10-29 08:13:55,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4343 to 4245. [2020-10-29 08:13:55,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4245 states. [2020-10-29 08:13:56,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4245 states to 4245 states and 5447 transitions. [2020-10-29 08:13:56,017 INFO L78 Accepts]: Start accepts. Automaton has 4245 states and 5447 transitions. Word has length 206 [2020-10-29 08:13:56,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:13:56,018 INFO L481 AbstractCegarLoop]: Abstraction has 4245 states and 5447 transitions. [2020-10-29 08:13:56,018 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:13:56,018 INFO L276 IsEmpty]: Start isEmpty. Operand 4245 states and 5447 transitions. [2020-10-29 08:13:56,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-10-29 08:13:56,023 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:13:56,023 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:13:56,023 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 08:13:56,023 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:13:56,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:13:56,025 INFO L82 PathProgramCache]: Analyzing trace with hash 236951506, now seen corresponding path program 1 times [2020-10-29 08:13:56,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:13:56,026 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1237431001] [2020-10-29 08:13:56,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:13:56,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:13:56,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:13:56,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:13:57,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:14:00,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:14:00,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-29 08:14:00,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:14:00,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4736 [2020-10-29 08:14:00,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:14:00,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:14:00,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 08:14:00,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:14:00,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-29 08:14:00,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:14:01,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:14:01,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:14:01,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:14:01,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:14:01,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:14:01,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:14:01,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 08:14:01,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:14:01,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:14:01,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:14:01,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:14:01,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:14:01,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:14:01,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:14:01,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:14:01,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:14:01,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:14:01,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:14:01,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:14:01,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 279 [2020-10-29 08:14:01,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:14:01,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:14:01,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 08:14:01,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:14:01,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 08:14:01,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:14:01,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:14:01,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:14:01,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:14:01,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:14:01,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 08:14:01,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:14:01,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-29 08:14:01,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:14:01,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:14:01,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:14:01,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:14:01,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 08:14:01,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:14:01,962 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 77 proven. 73 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 08:14:01,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1237431001] [2020-10-29 08:14:01,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:14:01,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 08:14:01,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651731880] [2020-10-29 08:14:01,966 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 08:14:01,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:14:01,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 08:14:01,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-29 08:14:01,969 INFO L87 Difference]: Start difference. First operand 4245 states and 5447 transitions. Second operand 10 states. [2020-10-29 08:14:02,213 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2020-10-29 08:14:28,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:14:28,774 INFO L93 Difference]: Finished difference Result 9268 states and 12675 transitions. [2020-10-29 08:14:28,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 08:14:28,777 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 208 [2020-10-29 08:14:28,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:14:28,808 INFO L225 Difference]: With dead ends: 9268 [2020-10-29 08:14:28,808 INFO L226 Difference]: Without dead ends: 5462 [2020-10-29 08:14:28,818 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=102, Invalid=318, Unknown=0, NotChecked=0, Total=420 [2020-10-29 08:14:28,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5462 states. [2020-10-29 08:14:28,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5462 to 5259. [2020-10-29 08:14:28,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5259 states. [2020-10-29 08:14:28,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5259 states to 5259 states and 6678 transitions. [2020-10-29 08:14:28,999 INFO L78 Accepts]: Start accepts. Automaton has 5259 states and 6678 transitions. Word has length 208 [2020-10-29 08:14:28,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:14:28,999 INFO L481 AbstractCegarLoop]: Abstraction has 5259 states and 6678 transitions. [2020-10-29 08:14:28,999 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 08:14:29,000 INFO L276 IsEmpty]: Start isEmpty. Operand 5259 states and 6678 transitions. [2020-10-29 08:14:29,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-10-29 08:14:29,003 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:14:29,003 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:14:29,004 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 08:14:29,004 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:14:29,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:14:29,004 INFO L82 PathProgramCache]: Analyzing trace with hash -889826936, now seen corresponding path program 1 times [2020-10-29 08:14:29,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:14:29,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [39901217] [2020-10-29 08:14:29,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:14:29,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:14:29,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:14:29,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:14:29,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:14:34,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:14:34,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 233 [2020-10-29 08:14:34,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:14:34,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-29 08:14:34,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:14:34,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:14:34,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:14:34,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-29 08:14:34,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-29 08:14:34,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:14:34,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:14:34,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:14:34,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:14:34,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:14:34,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:14:34,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:14:34,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 08:14:34,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:14:34,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:14:34,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:14:34,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:14:34,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:14:34,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:14:34,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:14:34,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:14:34,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:14:34,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:14:34,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:14:34,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:14:34,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-29 08:14:34,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:14:34,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:14:34,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:14:34,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:14:34,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 08:14:34,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:14:34,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:14:34,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:14:34,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:14:34,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:14:34,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:14:34,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 08:14:34,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:14:34,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-29 08:14:34,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:14:34,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:14:34,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:14:34,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:14:34,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 08:14:34,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:14:34,730 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 74 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-29 08:14:34,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [39901217] [2020-10-29 08:14:34,731 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:14:34,731 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 08:14:34,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906893979] [2020-10-29 08:14:34,732 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 08:14:34,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:14:34,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 08:14:34,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:14:34,734 INFO L87 Difference]: Start difference. First operand 5259 states and 6678 transitions. Second operand 5 states. [2020-10-29 08:14:50,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:14:50,181 INFO L93 Difference]: Finished difference Result 11886 states and 15685 transitions. [2020-10-29 08:14:50,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:14:50,183 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 219 [2020-10-29 08:14:50,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:14:50,212 INFO L225 Difference]: With dead ends: 11886 [2020-10-29 08:14:50,212 INFO L226 Difference]: Without dead ends: 7068 [2020-10-29 08:14:50,222 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 08:14:50,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7068 states. [2020-10-29 08:14:50,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7068 to 6176. [2020-10-29 08:14:50,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6176 states. [2020-10-29 08:14:50,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6176 states to 6176 states and 8208 transitions. [2020-10-29 08:14:50,395 INFO L78 Accepts]: Start accepts. Automaton has 6176 states and 8208 transitions. Word has length 219 [2020-10-29 08:14:50,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:14:50,396 INFO L481 AbstractCegarLoop]: Abstraction has 6176 states and 8208 transitions. [2020-10-29 08:14:50,396 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 08:14:50,396 INFO L276 IsEmpty]: Start isEmpty. Operand 6176 states and 8208 transitions. [2020-10-29 08:14:50,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2020-10-29 08:14:50,402 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:14:50,402 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:14:50,402 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 08:14:50,402 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:14:50,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:14:50,403 INFO L82 PathProgramCache]: Analyzing trace with hash -1204053332, now seen corresponding path program 1 times [2020-10-29 08:14:50,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:14:50,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1712678657] [2020-10-29 08:14:50,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:14:50,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:14:50,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:14:50,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:14:52,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:14:52,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 306 [2020-10-29 08:14:52,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:14:52,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1636 [2020-10-29 08:14:52,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:14:52,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:14:52,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:14:52,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-29 08:14:52,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 08:14:52,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:14:52,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:14:52,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:14:52,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:14:52,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:14:52,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:14:52,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:14:52,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 08:14:52,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:14:52,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:14:52,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:14:52,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:14:52,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:14:52,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:14:52,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:14:52,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:14:52,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:14:52,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:14:52,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:14:52,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:14:52,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 08:14:52,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:14:52,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:14:52,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:14:52,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:14:52,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:14:52,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:14:52,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:14:52,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:14:52,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:14:52,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:14:52,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 08:14:52,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:14:52,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-29 08:14:52,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:14:52,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:14:52,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:14:52,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:14:52,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 08:14:52,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:14:52,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-29 08:14:52,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:14:52,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:14:52,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:14:52,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 08:14:52,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:14:52,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-29 08:14:52,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:14:52,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:14:52,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:14:52,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:14:52,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 08:14:52,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:14:52,838 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 255 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-29 08:14:52,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1712678657] [2020-10-29 08:14:52,839 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:14:52,839 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:14:52,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641561327] [2020-10-29 08:14:52,841 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:14:52,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:14:52,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:14:52,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:14:52,842 INFO L87 Difference]: Start difference. First operand 6176 states and 8208 transitions. Second operand 7 states. [2020-10-29 08:15:14,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:15:14,884 INFO L93 Difference]: Finished difference Result 14960 states and 21189 transitions. [2020-10-29 08:15:14,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:15:14,887 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 290 [2020-10-29 08:15:14,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:15:14,937 INFO L225 Difference]: With dead ends: 14960 [2020-10-29 08:15:14,937 INFO L226 Difference]: Without dead ends: 9225 [2020-10-29 08:15:14,953 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:15:14,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9225 states. [2020-10-29 08:15:15,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9225 to 7674. [2020-10-29 08:15:15,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7674 states. [2020-10-29 08:15:15,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7674 states to 7674 states and 10894 transitions. [2020-10-29 08:15:15,257 INFO L78 Accepts]: Start accepts. Automaton has 7674 states and 10894 transitions. Word has length 290 [2020-10-29 08:15:15,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:15:15,258 INFO L481 AbstractCegarLoop]: Abstraction has 7674 states and 10894 transitions. [2020-10-29 08:15:15,258 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:15:15,258 INFO L276 IsEmpty]: Start isEmpty. Operand 7674 states and 10894 transitions. [2020-10-29 08:15:15,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2020-10-29 08:15:15,264 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:15:15,265 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:15:15,265 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 08:15:15,265 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:15:15,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:15:15,266 INFO L82 PathProgramCache]: Analyzing trace with hash 1379180772, now seen corresponding path program 1 times [2020-10-29 08:15:15,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:15:15,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [892556557] [2020-10-29 08:15:15,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:15:15,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:15:15,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:15,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:17,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:18,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:20,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:15:20,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-29 08:15:20,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:15:20,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4764 [2020-10-29 08:15:20,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:15:20,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:15:20,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 08:15:20,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:15:20,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 258 [2020-10-29 08:15:20,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:15:20,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:15:20,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:15:20,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:20,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:15:20,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:15:20,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:15:20,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 08:15:20,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:15:20,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:15:20,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:15:20,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:15:20,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:15:20,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:15:20,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:15:20,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:15:20,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:20,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:15:20,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:15:20,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:15:20,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-29 08:15:20,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:15:20,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:15:20,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 08:15:20,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:15:20,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 08:15:20,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:15:20,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:15:20,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:15:20,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:20,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:15:20,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 08:15:20,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:15:20,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-29 08:15:20,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:15:20,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:15:20,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:15:20,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:15:20,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-29 08:15:20,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:15:20,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-29 08:15:20,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:15:20,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:20,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:15:20,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 08:15:20,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:15:20,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-29 08:15:20,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:15:20,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:15:20,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:15:20,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:15:20,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 08:15:20,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:15:21,170 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 190 proven. 85 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-29 08:15:21,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [892556557] [2020-10-29 08:15:21,171 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:15:21,172 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 08:15:21,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350611629] [2020-10-29 08:15:21,180 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 08:15:21,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:15:21,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 08:15:21,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-29 08:15:21,182 INFO L87 Difference]: Start difference. First operand 7674 states and 10894 transitions. Second operand 10 states. [2020-10-29 08:15:21,378 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 08:15:52,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:15:52,546 INFO L93 Difference]: Finished difference Result 22561 states and 37165 transitions. [2020-10-29 08:15:52,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 08:15:52,553 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 294 [2020-10-29 08:15:52,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:15:52,623 INFO L225 Difference]: With dead ends: 22561 [2020-10-29 08:15:52,623 INFO L226 Difference]: Without dead ends: 15328 [2020-10-29 08:15:52,649 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=160, Invalid=490, Unknown=0, NotChecked=0, Total=650 [2020-10-29 08:15:52,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15328 states. [2020-10-29 08:15:53,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15328 to 15092. [2020-10-29 08:15:53,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15092 states. [2020-10-29 08:15:53,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15092 states to 15092 states and 22049 transitions. [2020-10-29 08:15:53,198 INFO L78 Accepts]: Start accepts. Automaton has 15092 states and 22049 transitions. Word has length 294 [2020-10-29 08:15:53,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:15:53,199 INFO L481 AbstractCegarLoop]: Abstraction has 15092 states and 22049 transitions. [2020-10-29 08:15:53,199 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 08:15:53,199 INFO L276 IsEmpty]: Start isEmpty. Operand 15092 states and 22049 transitions. [2020-10-29 08:15:53,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2020-10-29 08:15:53,205 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:15:53,205 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:15:53,206 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 08:15:53,206 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:15:53,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:15:53,207 INFO L82 PathProgramCache]: Analyzing trace with hash 1406676992, now seen corresponding path program 1 times [2020-10-29 08:15:53,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:15:53,207 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [408334843] [2020-10-29 08:15:53,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:15:53,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:15:53,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:53,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:54,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:54,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:56,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:56,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:15:56,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 312 [2020-10-29 08:15:56,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 08:15:56,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3242 [2020-10-29 08:15:56,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:15:56,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:15:56,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:15:56,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-29 08:15:56,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-29 08:15:56,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:15:56,813 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 08:15:56,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:15:56,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:15:56,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:56,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:15:56,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:15:56,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:15:56,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 08:15:56,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:15:56,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:15:56,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:15:56,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:15:56,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:15:56,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:15:56,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:15:56,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:15:56,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:56,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:15:56,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:15:56,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:15:56,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 08:15:56,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:15:56,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:15:56,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:15:56,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:15:56,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:15:56,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:15:56,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:15:56,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:15:56,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:57,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:15:57,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 08:15:57,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:15:57,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-29 08:15:57,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:15:57,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:15:57,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:15:57,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:15:57,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 08:15:57,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:15:57,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-29 08:15:57,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:15:57,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:57,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:57,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:15:57,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 08:15:57,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:15:57,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-29 08:15:57,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:15:57,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:15:57,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:15:57,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:15:57,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 08:15:57,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:15:57,335 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 122 proven. 3 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2020-10-29 08:15:57,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [408334843] [2020-10-29 08:15:57,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:15:57,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 08:15:57,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642812644] [2020-10-29 08:15:57,338 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 08:15:57,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:15:57,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 08:15:57,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 08:15:57,339 INFO L87 Difference]: Start difference. First operand 15092 states and 22049 transitions. Second operand 6 states. [2020-10-29 08:15:57,494 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 66