/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=DEEPEST --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/Problem13_label32.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 18:01:38,563 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 18:01:38,566 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 18:01:38,627 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 18:01:38,628 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 18:01:38,637 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 18:01:38,641 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 18:01:38,647 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 18:01:38,652 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 18:01:38,660 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 18:01:38,662 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 18:01:38,665 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 18:01:38,665 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 18:01:38,669 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 18:01:38,673 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 18:01:38,675 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 18:01:38,677 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 18:01:38,681 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 18:01:38,689 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 18:01:38,700 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 18:01:38,702 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 18:01:38,705 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 18:01:38,707 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 18:01:38,711 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 18:01:38,736 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 18:01:38,737 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 18:01:38,737 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 18:01:38,739 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 18:01:38,739 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 18:01:38,740 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 18:01:38,741 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 18:01:38,742 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 18:01:38,743 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 18:01:38,744 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 18:01:38,745 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 18:01:38,745 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 18:01:38,746 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 18:01:38,746 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 18:01:38,746 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 18:01:38,748 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 18:01:38,749 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 18:01:38,758 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 [2020-10-27 18:01:38,818 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 18:01:38,819 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 18:01:38,824 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 18:01:38,825 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 18:01:38,825 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 18:01:38,826 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 18:01:38,826 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 18:01:38,826 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 18:01:38,826 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 18:01:38,827 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 18:01:38,828 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 18:01:38,829 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 18:01:38,829 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 18:01:38,829 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 18:01:38,829 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 18:01:38,830 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 18:01:38,830 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 18:01:38,830 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 18:01:38,831 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 18:01:38,831 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 18:01:38,831 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 18:01:38,832 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 18:01:38,832 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 18:01:38,832 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 18:01:38,832 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 18:01:38,833 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 18:01:38,833 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 18:01:38,833 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 18:01:38,834 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 18:01:38,834 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 18:01:39,315 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 18:01:39,347 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 18:01:39,350 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 18:01:39,352 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 18:01:39,353 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 18:01:39,354 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label32.c [2020-10-27 18:01:39,450 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f59e39630/a1d2d3e89be44abbb2edffd6f694d139/FLAGd7060f3a4 [2020-10-27 18:01:40,578 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 18:01:40,579 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label32.c [2020-10-27 18:01:40,628 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f59e39630/a1d2d3e89be44abbb2edffd6f694d139/FLAGd7060f3a4 [2020-10-27 18:01:40,938 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f59e39630/a1d2d3e89be44abbb2edffd6f694d139 [2020-10-27 18:01:40,944 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 18:01:40,953 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 18:01:40,958 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 18:01:40,958 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 18:01:40,962 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 18:01:40,963 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:01:40" (1/1) ... [2020-10-27 18:01:40,968 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15a0c0f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:01:40, skipping insertion in model container [2020-10-27 18:01:40,968 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:01:40" (1/1) ... [2020-10-27 18:01:40,978 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 18:01:41,169 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 18:01:42,833 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 18:01:42,851 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 18:01:43,682 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 18:01:43,725 INFO L208 MainTranslator]: Completed translation [2020-10-27 18:01:43,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:01:43 WrapperNode [2020-10-27 18:01:43,727 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 18:01:43,729 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 18:01:43,729 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 18:01:43,729 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 18:01:43,743 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:01:43" (1/1) ... [2020-10-27 18:01:43,746 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:01:43" (1/1) ... [2020-10-27 18:01:43,835 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:01:43" (1/1) ... [2020-10-27 18:01:43,836 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:01:43" (1/1) ... [2020-10-27 18:01:44,047 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:01:43" (1/1) ... [2020-10-27 18:01:44,098 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:01:43" (1/1) ... [2020-10-27 18:01:44,138 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:01:43" (1/1) ... [2020-10-27 18:01:44,173 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 18:01:44,174 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 18:01:44,174 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 18:01:44,174 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 18:01:44,175 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:01:43" (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 [2020-10-27 18:01:44,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 18:01:44,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 18:01:44,259 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 18:01:44,259 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 18:01:44,259 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 18:01:44,259 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 18:01:44,259 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-27 18:01:44,259 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 18:01:44,260 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 18:01:44,260 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 18:01:44,260 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 18:01:44,260 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-27 18:01:44,260 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 18:01:44,260 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 18:01:44,260 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 18:01:44,261 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 18:01:44,261 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 18:01:44,261 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 18:01:44,261 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 18:01:44,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 18:01:44,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 18:01:44,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 18:01:44,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 18:01:44,262 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 18:01:44,262 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 18:01:54,129 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 18:01:54,131 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 18:01:54,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:01:54 BoogieIcfgContainer [2020-10-27 18:01:54,138 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 18:01:54,142 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 18:01:54,142 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 18:01:54,146 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 18:01:54,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 06:01:40" (1/3) ... [2020-10-27 18:01:54,148 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1109a31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:01:54, skipping insertion in model container [2020-10-27 18:01:54,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:01:43" (2/3) ... [2020-10-27 18:01:54,148 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1109a31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:01:54, skipping insertion in model container [2020-10-27 18:01:54,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:01:54" (3/3) ... [2020-10-27 18:01:54,151 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem13_label32.c [2020-10-27 18:01:54,171 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 18:01:54,178 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 18:01:54,192 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 18:01:54,248 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 18:01:54,248 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 18:01:54,248 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 18:01:54,248 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 18:01:54,248 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 18:01:54,248 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 18:01:54,249 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 18:01:54,249 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 18:01:54,289 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states. [2020-10-27 18:01:54,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-27 18:01:54,296 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:01:54,297 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:01:54,297 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:01:54,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:01:54,304 INFO L82 PathProgramCache]: Analyzing trace with hash 146632850, now seen corresponding path program 1 times [2020-10-27 18:01:54,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:01:54,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1511856058] [2020-10-27 18:01:54,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:01:54,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:01:54,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:01:55,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:01:55,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 18:01:55,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:01:55,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 547 [2020-10-27 18:01:55,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:01:55,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 18:01:55,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 18:01:55,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 18:01:55,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-27 18:01:55,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:01:55,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:01:55,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:01:55,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:01:55,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:01:55,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:01:55,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 18:01:55,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:01:55,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:01:55,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:01:55,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 18:01:55,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:01:55,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:01:55,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1511856058] [2020-10-27 18:01:55,228 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 18:01:55,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 18:01:55,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130899702] [2020-10-27 18:01:55,235 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 18:01:55,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:01:55,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 18:01:55,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 18:01:55,254 INFO L87 Difference]: Start difference. First operand 1123 states. Second operand 4 states. [2020-10-27 18:02:10,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:02:10,151 INFO L93 Difference]: Finished difference Result 3123 states and 5754 transitions. [2020-10-27 18:02:10,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:02:10,153 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-27 18:02:10,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:02:10,192 INFO L225 Difference]: With dead ends: 3123 [2020-10-27 18:02:10,192 INFO L226 Difference]: Without dead ends: 1936 [2020-10-27 18:02:10,212 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:02:10,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1936 states. [2020-10-27 18:02:10,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1936 to 1918. [2020-10-27 18:02:10,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1918 states. [2020-10-27 18:02:10,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1918 states to 1918 states and 2936 transitions. [2020-10-27 18:02:10,436 INFO L78 Accepts]: Start accepts. Automaton has 1918 states and 2936 transitions. Word has length 15 [2020-10-27 18:02:10,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:02:10,437 INFO L481 AbstractCegarLoop]: Abstraction has 1918 states and 2936 transitions. [2020-10-27 18:02:10,437 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 18:02:10,437 INFO L276 IsEmpty]: Start isEmpty. Operand 1918 states and 2936 transitions. [2020-10-27 18:02:10,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-27 18:02:10,442 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:02:10,442 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:02:10,443 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 18:02:10,443 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:02:10,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:02:10,444 INFO L82 PathProgramCache]: Analyzing trace with hash -52101640, now seen corresponding path program 1 times [2020-10-27 18:02:10,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:02:10,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1936262107] [2020-10-27 18:02:10,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:02:10,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:02:10,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:02:11,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:02:11,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:02:11,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-27 18:02:11,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:02:11,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1284 [2020-10-27 18:02:11,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:02:11,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:02:11,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-27 18:02:11,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 18:02:11,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 18:02:11,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:02:11,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:02:11,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:02:11,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:02:11,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:02:11,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:02:11,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 18:02:11,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:02:11,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:02:11,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:02:11,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:02:11,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:02:11,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:02:12,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:02:12,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:02:12,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:02:12,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 18:02:12,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:02:12,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-27 18:02:12,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:02:12,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:02:12,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:02:12,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 18:02:12,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:02:12,272 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:02:12,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1936262107] [2020-10-27 18:02:12,273 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:02:12,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:02:12,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556234631] [2020-10-27 18:02:12,276 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:02:12,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:02:12,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:02:12,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:02:12,279 INFO L87 Difference]: Start difference. First operand 1918 states and 2936 transitions. Second operand 5 states. [2020-10-27 18:02:29,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:02:29,627 INFO L93 Difference]: Finished difference Result 4686 states and 7486 transitions. [2020-10-27 18:02:29,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:02:29,632 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 91 [2020-10-27 18:02:29,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:02:29,652 INFO L225 Difference]: With dead ends: 4686 [2020-10-27 18:02:29,653 INFO L226 Difference]: Without dead ends: 2774 [2020-10-27 18:02:29,659 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 [2020-10-27 18:02:29,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2774 states. [2020-10-27 18:02:29,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2774 to 2766. [2020-10-27 18:02:29,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2766 states. [2020-10-27 18:02:29,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2766 states to 2766 states and 3980 transitions. [2020-10-27 18:02:29,778 INFO L78 Accepts]: Start accepts. Automaton has 2766 states and 3980 transitions. Word has length 91 [2020-10-27 18:02:29,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:02:29,779 INFO L481 AbstractCegarLoop]: Abstraction has 2766 states and 3980 transitions. [2020-10-27 18:02:29,779 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:02:29,780 INFO L276 IsEmpty]: Start isEmpty. Operand 2766 states and 3980 transitions. [2020-10-27 18:02:29,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-27 18:02:29,783 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:02:29,783 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:02:29,784 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 18:02:29,784 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:02:29,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:02:29,785 INFO L82 PathProgramCache]: Analyzing trace with hash 1332922779, now seen corresponding path program 1 times [2020-10-27 18:02:29,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:02:29,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [602750387] [2020-10-27 18:02:29,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:02:29,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:02:29,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:02:30,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:02:31,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:02:31,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-27 18:02:31,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:02:31,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1176 [2020-10-27 18:02:31,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:02:31,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:02:31,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-27 18:02:31,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 18:02:31,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:02:31,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:02:31,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:02:31,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:02:31,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:02:31,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:02:31,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:02:31,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 18:02:31,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:02:31,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:02:31,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:02:31,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:02:31,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:02:31,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:02:31,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:02:31,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:02:31,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:02:31,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-27 18:02:31,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:02:31,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-27 18:02:31,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:02:31,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:02:31,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:02:31,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-27 18:02:31,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:02:31,388 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:02:31,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [602750387] [2020-10-27 18:02:31,389 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:02:31,389 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:02:31,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109684167] [2020-10-27 18:02:31,390 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:02:31,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:02:31,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:02:31,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:02:31,393 INFO L87 Difference]: Start difference. First operand 2766 states and 3980 transitions. Second operand 5 states. [2020-10-27 18:02:49,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:02:49,919 INFO L93 Difference]: Finished difference Result 6384 states and 9604 transitions. [2020-10-27 18:02:49,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:02:49,922 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-10-27 18:02:49,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:02:49,947 INFO L225 Difference]: With dead ends: 6384 [2020-10-27 18:02:49,948 INFO L226 Difference]: Without dead ends: 3624 [2020-10-27 18:02:49,956 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 [2020-10-27 18:02:49,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3624 states. [2020-10-27 18:02:50,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3624 to 3600. [2020-10-27 18:02:50,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3600 states. [2020-10-27 18:02:50,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3600 states to 3600 states and 5042 transitions. [2020-10-27 18:02:50,079 INFO L78 Accepts]: Start accepts. Automaton has 3600 states and 5042 transitions. Word has length 105 [2020-10-27 18:02:50,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:02:50,080 INFO L481 AbstractCegarLoop]: Abstraction has 3600 states and 5042 transitions. [2020-10-27 18:02:50,080 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:02:50,080 INFO L276 IsEmpty]: Start isEmpty. Operand 3600 states and 5042 transitions. [2020-10-27 18:02:50,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-27 18:02:50,092 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:02:50,092 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:02:50,093 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 18:02:50,093 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:02:50,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:02:50,096 INFO L82 PathProgramCache]: Analyzing trace with hash 1008033565, now seen corresponding path program 1 times [2020-10-27 18:02:50,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:02:50,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1196732689] [2020-10-27 18:02:50,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:02:50,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:02:50,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:02:50,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:02:50,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:02:51,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:02:51,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-27 18:02:51,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 18:02:51,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1549 [2020-10-27 18:02:51,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:02:51,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:02:51,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-27 18:02:51,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 18:02:51,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:02:51,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:02:51,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:02:51,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:02:51,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:02:51,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:02:51,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:02:51,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-27 18:02:51,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:02:51,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:02:51,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:02:51,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:02:51,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:02:51,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:02:51,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:02:51,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:02:52,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:02:52,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-27 18:02:52,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:02:52,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-27 18:02:52,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:02:52,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:02:52,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:02:52,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-27 18:02:52,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:02:52,108 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:02:52,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1196732689] [2020-10-27 18:02:52,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:02:52,109 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 18:02:52,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506435532] [2020-10-27 18:02:52,109 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 18:02:52,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:02:52,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 18:02:52,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:02:52,111 INFO L87 Difference]: Start difference. First operand 3600 states and 5042 transitions. Second operand 6 states. [2020-10-27 18:03:16,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:03:16,110 INFO L93 Difference]: Finished difference Result 8033 states and 11715 transitions. [2020-10-27 18:03:16,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 18:03:16,114 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 108 [2020-10-27 18:03:16,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:03:16,152 INFO L225 Difference]: With dead ends: 8033 [2020-10-27 18:03:16,153 INFO L226 Difference]: Without dead ends: 4439 [2020-10-27 18:03:16,161 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 18:03:16,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4439 states. [2020-10-27 18:03:16,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4439 to 4422. [2020-10-27 18:03:16,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4422 states. [2020-10-27 18:03:16,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4422 states to 4422 states and 6366 transitions. [2020-10-27 18:03:16,300 INFO L78 Accepts]: Start accepts. Automaton has 4422 states and 6366 transitions. Word has length 108 [2020-10-27 18:03:16,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:03:16,301 INFO L481 AbstractCegarLoop]: Abstraction has 4422 states and 6366 transitions. [2020-10-27 18:03:16,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 18:03:16,302 INFO L276 IsEmpty]: Start isEmpty. Operand 4422 states and 6366 transitions. [2020-10-27 18:03:16,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-27 18:03:16,312 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:03:16,312 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:03:16,313 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 18:03:16,313 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:03:16,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:03:16,314 INFO L82 PathProgramCache]: Analyzing trace with hash -103469795, now seen corresponding path program 1 times [2020-10-27 18:03:16,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:03:16,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [685586585] [2020-10-27 18:03:16,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:03:16,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:03:16,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:03:16,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:03:17,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:03:17,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-27 18:03:17,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:03:17,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1148 [2020-10-27 18:03:17,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:03:17,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:03:17,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 119 [2020-10-27 18:03:17,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 18:03:17,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:03:17,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:03:17,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:03:17,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:03:17,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:03:17,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:03:17,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:03:17,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 18:03:17,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:03:17,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:03:17,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:03:17,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:03:17,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:03:17,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:03:17,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:03:17,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:03:17,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:03:17,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-27 18:03:17,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:03:17,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-10-27 18:03:17,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:03:17,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:03:17,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:03:17,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-27 18:03:17,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:03:17,996 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:03:17,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [685586585] [2020-10-27 18:03:17,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:03:17,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:03:17,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77228147] [2020-10-27 18:03:17,998 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:03:17,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:03:17,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:03:17,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:03:17,999 INFO L87 Difference]: Start difference. First operand 4422 states and 6366 transitions. Second operand 5 states. [2020-10-27 18:03:44,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:03:44,616 INFO L93 Difference]: Finished difference Result 12915 states and 18952 transitions. [2020-10-27 18:03:44,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:03:44,622 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2020-10-27 18:03:44,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:03:44,669 INFO L225 Difference]: With dead ends: 12915 [2020-10-27 18:03:44,669 INFO L226 Difference]: Without dead ends: 8499 [2020-10-27 18:03:44,682 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 [2020-10-27 18:03:44,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8499 states. [2020-10-27 18:03:44,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8499 to 8494. [2020-10-27 18:03:44,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8494 states. [2020-10-27 18:03:44,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8494 states to 8494 states and 11872 transitions. [2020-10-27 18:03:44,954 INFO L78 Accepts]: Start accepts. Automaton has 8494 states and 11872 transitions. Word has length 124 [2020-10-27 18:03:44,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:03:44,956 INFO L481 AbstractCegarLoop]: Abstraction has 8494 states and 11872 transitions. [2020-10-27 18:03:44,956 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:03:44,956 INFO L276 IsEmpty]: Start isEmpty. Operand 8494 states and 11872 transitions. [2020-10-27 18:03:44,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-27 18:03:44,960 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:03:44,961 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:03:44,961 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 18:03:44,961 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:03:44,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:03:44,962 INFO L82 PathProgramCache]: Analyzing trace with hash -1034380024, now seen corresponding path program 1 times [2020-10-27 18:03:44,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:03:44,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [533082913] [2020-10-27 18:03:44,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:03:45,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:03:45,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:03:45,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:03:46,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:03:46,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:03:50,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:03:50,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-27 18:03:50,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:03:50,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-27 18:03:50,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:03:50,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:03:50,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 169 [2020-10-27 18:03:50,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 18:03:50,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:03:50,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:03:50,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:03:50,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:03:50,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:03:50,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:03:50,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:03:50,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 18:03:50,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:03:50,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:03:50,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:03:50,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:03:50,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:03:50,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:03:50,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:03:50,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:03:50,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:03:50,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 18:03:50,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:03:50,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 18:03:50,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:03:50,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:03:50,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:03:50,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:03:50,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:03:50,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-27 18:03:50,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:03:50,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:03:50,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:03:50,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-27 18:03:50,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:03:50,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-27 18:03:50,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:03:50,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:03:50,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:03:50,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-27 18:03:50,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:03:50,472 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-27 18:03:50,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [533082913] [2020-10-27 18:03:50,474 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:03:50,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:03:50,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533421995] [2020-10-27 18:03:50,475 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:03:50,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:03:50,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:03:50,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:03:50,477 INFO L87 Difference]: Start difference. First operand 8494 states and 11872 transitions. Second operand 5 states. [2020-10-27 18:04:18,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:04:18,231 INFO L93 Difference]: Finished difference Result 25121 states and 36232 transitions. [2020-10-27 18:04:18,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:04:18,234 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 173 [2020-10-27 18:04:18,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:04:18,354 INFO L225 Difference]: With dead ends: 25121 [2020-10-27 18:04:18,354 INFO L226 Difference]: Without dead ends: 16633 [2020-10-27 18:04:18,377 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:04:18,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16633 states. [2020-10-27 18:04:18,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16633 to 16628. [2020-10-27 18:04:18,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16628 states. [2020-10-27 18:04:18,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16628 states to 16628 states and 22446 transitions. [2020-10-27 18:04:18,827 INFO L78 Accepts]: Start accepts. Automaton has 16628 states and 22446 transitions. Word has length 173 [2020-10-27 18:04:18,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:04:18,827 INFO L481 AbstractCegarLoop]: Abstraction has 16628 states and 22446 transitions. [2020-10-27 18:04:18,827 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:04:18,827 INFO L276 IsEmpty]: Start isEmpty. Operand 16628 states and 22446 transitions. [2020-10-27 18:04:18,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-27 18:04:18,835 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:04:18,835 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:04:18,836 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 18:04:18,836 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:04:18,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:04:18,836 INFO L82 PathProgramCache]: Analyzing trace with hash -602367300, now seen corresponding path program 1 times [2020-10-27 18:04:18,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:04:18,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2059700949] [2020-10-27 18:04:18,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:04:18,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:04:18,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:04:19,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:04:19,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:04:20,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:04:20,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-10-27 18:04:20,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 18:04:20,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2022 [2020-10-27 18:04:20,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:04:20,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:04:20,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-27 18:04:20,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 18:04:20,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:04:21,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:04:21,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:04:21,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:04:21,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:04:21,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:04:21,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:04:21,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 18:04:21,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:04:21,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:04:21,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:04:21,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:04:21,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:04:21,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:04:21,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:04:21,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:04:21,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:04:21,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-27 18:04:21,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:04:21,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-10-27 18:04:21,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:04:21,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:04:21,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:04:21,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 197 [2020-10-27 18:04:21,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:04:21,635 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:04:21,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2059700949] [2020-10-27 18:04:21,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:04:21,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:04:21,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571888940] [2020-10-27 18:04:21,637 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:04:21,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:04:21,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:04:21,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:04:21,639 INFO L87 Difference]: Start difference. First operand 16628 states and 22446 transitions. Second operand 5 states. [2020-10-27 18:04:49,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:04:49,186 INFO L93 Difference]: Finished difference Result 49571 states and 69434 transitions. [2020-10-27 18:04:49,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:04:49,190 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 218 [2020-10-27 18:04:49,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:04:49,327 INFO L225 Difference]: With dead ends: 49571 [2020-10-27 18:04:49,328 INFO L226 Difference]: Without dead ends: 32949 [2020-10-27 18:04:49,373 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:04:49,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32949 states. [2020-10-27 18:04:50,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32949 to 32895. [2020-10-27 18:04:50,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32895 states. [2020-10-27 18:04:50,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32895 states to 32895 states and 43808 transitions. [2020-10-27 18:04:50,386 INFO L78 Accepts]: Start accepts. Automaton has 32895 states and 43808 transitions. Word has length 218 [2020-10-27 18:04:50,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:04:50,387 INFO L481 AbstractCegarLoop]: Abstraction has 32895 states and 43808 transitions. [2020-10-27 18:04:50,387 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:04:50,388 INFO L276 IsEmpty]: Start isEmpty. Operand 32895 states and 43808 transitions. [2020-10-27 18:04:50,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-10-27 18:04:50,396 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:04:50,397 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:04:50,397 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 18:04:50,397 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:04:50,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:04:50,398 INFO L82 PathProgramCache]: Analyzing trace with hash 1304844994, now seen corresponding path program 1 times [2020-10-27 18:04:50,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:04:50,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1641710874] [2020-10-27 18:04:50,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:04:50,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:04:50,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:04:51,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:04:52,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:04:52,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 233 [2020-10-27 18:04:52,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:04:52,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1832 [2020-10-27 18:04:52,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:04:52,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:04:52,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 216 [2020-10-27 18:04:52,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 18:04:52,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:04:52,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:04:52,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:04:52,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:04:52,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:04:52,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:04:52,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:04:52,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 18:04:52,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:04:52,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:04:52,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:04:52,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:04:52,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:04:52,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:04:52,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:04:52,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:04:52,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:04:52,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-10-27 18:04:52,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:04:52,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 232 [2020-10-27 18:04:52,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:04:52,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:04:52,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:04:52,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-27 18:04:52,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:04:52,991 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:04:52,991 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1641710874] [2020-10-27 18:04:52,992 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:04:52,992 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:04:52,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087251254] [2020-10-27 18:04:52,993 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:04:52,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:04:52,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:04:52,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:04:52,994 INFO L87 Difference]: Start difference. First operand 32895 states and 43808 transitions. Second operand 5 states. [2020-10-27 18:05:29,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:05:29,917 INFO L93 Difference]: Finished difference Result 82165 states and 113851 transitions. [2020-10-27 18:05:29,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:05:29,919 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 221 [2020-10-27 18:05:29,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:05:30,116 INFO L225 Difference]: With dead ends: 82165 [2020-10-27 18:05:30,117 INFO L226 Difference]: Without dead ends: 49276 [2020-10-27 18:05:30,196 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:05:30,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49276 states. [2020-10-27 18:05:31,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49276 to 49214. [2020-10-27 18:05:31,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49214 states. [2020-10-27 18:05:31,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49214 states to 49214 states and 67266 transitions. [2020-10-27 18:05:31,739 INFO L78 Accepts]: Start accepts. Automaton has 49214 states and 67266 transitions. Word has length 221 [2020-10-27 18:05:31,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:05:31,740 INFO L481 AbstractCegarLoop]: Abstraction has 49214 states and 67266 transitions. [2020-10-27 18:05:31,740 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:05:31,740 INFO L276 IsEmpty]: Start isEmpty. Operand 49214 states and 67266 transitions. [2020-10-27 18:05:31,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-10-27 18:05:31,758 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:05:31,758 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:05:31,758 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 18:05:31,759 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:05:31,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:05:31,759 INFO L82 PathProgramCache]: Analyzing trace with hash 2053690680, now seen corresponding path program 1 times [2020-10-27 18:05:31,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:05:31,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [259838431] [2020-10-27 18:05:31,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:05:31,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:05:31,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:05:32,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:05:32,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking...