/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=SHALLOWEST --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/Problem04_label15.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 20:58:49,040 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 20:58:49,043 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 20:58:49,095 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 20:58:49,096 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 20:58:49,102 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 20:58:49,104 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 20:58:49,108 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 20:58:49,111 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 20:58:49,117 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 20:58:49,118 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 20:58:49,120 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 20:58:49,120 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 20:58:49,123 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 20:58:49,125 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 20:58:49,127 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 20:58:49,128 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 20:58:49,131 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 20:58:49,143 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 20:58:49,145 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 20:58:49,147 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 20:58:49,153 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 20:58:49,154 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 20:58:49,156 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 20:58:49,168 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 20:58:49,168 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 20:58:49,168 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 20:58:49,170 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 20:58:49,171 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 20:58:49,172 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 20:58:49,172 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 20:58:49,173 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 20:58:49,174 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 20:58:49,175 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 20:58:49,176 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 20:58:49,176 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 20:58:49,177 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 20:58:49,177 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 20:58:49,178 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 20:58:49,178 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 20:58:49,179 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 20:58:49,186 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 [2020-10-26 20:58:49,234 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 20:58:49,234 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 20:58:49,238 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 20:58:49,238 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 20:58:49,238 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 20:58:49,239 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 20:58:49,239 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 20:58:49,239 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 20:58:49,239 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 20:58:49,240 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 20:58:49,241 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 20:58:49,241 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 20:58:49,242 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 20:58:49,242 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 20:58:49,242 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 20:58:49,242 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 20:58:49,242 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 20:58:49,242 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 20:58:49,243 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 20:58:49,244 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 20:58:49,244 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 20:58:49,249 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 20:58:49,250 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 20:58:49,250 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 20:58:49,250 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 20:58:49,250 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 20:58:49,250 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 20:58:49,251 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 20:58:49,252 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 20:58:49,252 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 20:58:49,649 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 20:58:49,679 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 20:58:49,682 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 20:58:49,684 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 20:58:49,685 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 20:58:49,686 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label15.c [2020-10-26 20:58:49,758 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/06d772a1d/12567076793b411483c487ef7fcb66cd/FLAGb0db6f31d [2020-10-26 20:58:50,814 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 20:58:50,814 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label15.c [2020-10-26 20:58:50,859 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/06d772a1d/12567076793b411483c487ef7fcb66cd/FLAGb0db6f31d [2020-10-26 20:58:51,182 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/06d772a1d/12567076793b411483c487ef7fcb66cd [2020-10-26 20:58:51,185 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 20:58:51,193 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 20:58:51,197 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 20:58:51,197 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 20:58:51,201 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 20:58:51,202 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:58:51" (1/1) ... [2020-10-26 20:58:51,205 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dfd3fc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:58:51, skipping insertion in model container [2020-10-26 20:58:51,206 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:58:51" (1/1) ... [2020-10-26 20:58:51,214 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 20:58:51,373 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 20:58:52,787 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 20:58:52,814 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 20:58:53,632 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 20:58:53,670 INFO L208 MainTranslator]: Completed translation [2020-10-26 20:58:53,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:58:53 WrapperNode [2020-10-26 20:58:53,672 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 20:58:53,673 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 20:58:53,673 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 20:58:53,673 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 20:58:53,686 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:58:53" (1/1) ... [2020-10-26 20:58:53,688 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:58:53" (1/1) ... [2020-10-26 20:58:53,759 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:58:53" (1/1) ... [2020-10-26 20:58:53,759 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:58:53" (1/1) ... [2020-10-26 20:58:53,903 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:58:53" (1/1) ... [2020-10-26 20:58:53,940 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:58:53" (1/1) ... [2020-10-26 20:58:53,970 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:58:53" (1/1) ... [2020-10-26 20:58:54,000 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 20:58:54,003 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 20:58:54,004 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 20:58:54,004 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 20:58:54,005 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:58:53" (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 [2020-10-26 20:58:54,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 20:58:54,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 20:58:54,079 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 20:58:54,079 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 20:58:54,079 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-26 20:58:54,080 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-26 20:58:54,080 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-26 20:58:54,080 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 20:58:54,081 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 20:58:54,081 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-26 20:58:54,082 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-26 20:58:54,082 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-26 20:58:54,082 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 20:58:54,082 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 20:58:54,083 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 20:58:54,084 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 20:58:54,084 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 20:58:54,084 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 20:58:54,084 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 20:58:54,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 20:58:54,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 20:58:54,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 20:58:54,085 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 20:58:54,085 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 20:58:54,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 20:58:59,308 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 20:58:59,308 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 20:58:59,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:58:59 BoogieIcfgContainer [2020-10-26 20:58:59,312 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 20:58:59,314 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 20:58:59,314 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 20:58:59,318 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 20:58:59,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 08:58:51" (1/3) ... [2020-10-26 20:58:59,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2576a401 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 08:58:59, skipping insertion in model container [2020-10-26 20:58:59,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:58:53" (2/3) ... [2020-10-26 20:58:59,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2576a401 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 08:58:59, skipping insertion in model container [2020-10-26 20:58:59,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:58:59" (3/3) ... [2020-10-26 20:58:59,321 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem04_label15.c [2020-10-26 20:58:59,333 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 20:58:59,339 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 20:58:59,352 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 20:58:59,387 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 20:58:59,387 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 20:58:59,387 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 20:58:59,387 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 20:58:59,388 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 20:58:59,388 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 20:58:59,388 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 20:58:59,388 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 20:58:59,424 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states. [2020-10-26 20:58:59,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 793 [2020-10-26 20:58:59,471 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:58:59,474 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:58:59,474 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:58:59,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:58:59,481 INFO L82 PathProgramCache]: Analyzing trace with hash -222829388, now seen corresponding path program 1 times [2020-10-26 20:58:59,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:58:59,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2036239759] [2020-10-26 20:58:59,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:59:00,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:59:00,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:59:05,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:59:05,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:59:05,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 808 [2020-10-26 20:59:05,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:59:05,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5145 [2020-10-26 20:59:05,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:59:05,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-26 20:59:05,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:59:05,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 799 [2020-10-26 20:59:05,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-26 20:59:06,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:59:06,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:59:06,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:59:06,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:59:06,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:59:06,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:59:06,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 20:59:06,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:59:06,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:59:06,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:59:06,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:59:06,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:59:07,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 20:59:07,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2036239759] [2020-10-26 20:59:07,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 20:59:07,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 20:59:07,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696101876] [2020-10-26 20:59:07,587 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 20:59:07,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:59:07,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 20:59:07,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 20:59:07,605 INFO L87 Difference]: Start difference. First operand 910 states. Second operand 4 states. [2020-10-26 20:59:07,766 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 20:59:18,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:59:18,723 INFO L93 Difference]: Finished difference Result 2677 states and 5144 transitions. [2020-10-26 20:59:18,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 20:59:18,725 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 792 [2020-10-26 20:59:18,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:59:18,769 INFO L225 Difference]: With dead ends: 2677 [2020-10-26 20:59:18,769 INFO L226 Difference]: Without dead ends: 1703 [2020-10-26 20:59:18,784 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 20:59:18,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1703 states. [2020-10-26 20:59:18,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1703 to 1688. [2020-10-26 20:59:18,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1688 states. [2020-10-26 20:59:18,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1688 states to 1688 states and 3016 transitions. [2020-10-26 20:59:18,963 INFO L78 Accepts]: Start accepts. Automaton has 1688 states and 3016 transitions. Word has length 792 [2020-10-26 20:59:18,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:59:18,966 INFO L481 AbstractCegarLoop]: Abstraction has 1688 states and 3016 transitions. [2020-10-26 20:59:18,966 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 20:59:18,966 INFO L276 IsEmpty]: Start isEmpty. Operand 1688 states and 3016 transitions. [2020-10-26 20:59:18,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 812 [2020-10-26 20:59:18,997 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:59:18,998 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:59:18,998 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 20:59:18,999 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:59:19,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:59:19,001 INFO L82 PathProgramCache]: Analyzing trace with hash -1175507355, now seen corresponding path program 1 times [2020-10-26 20:59:19,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:59:19,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [141300529] [2020-10-26 20:59:19,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:59:19,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:59:19,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:59:20,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:59:24,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:59:24,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 829 [2020-10-26 20:59:24,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:59:24,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-26 20:59:24,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:59:24,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-26 20:59:24,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-26 20:59:24,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 796 [2020-10-26 20:59:24,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-26 20:59:24,973 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-26 20:59:24,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:59:24,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:59:24,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:59:24,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:59:24,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:59:24,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:59:24,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 20:59:24,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:59:24,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:59:24,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:59:24,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:59:24,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-26 20:59:25,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:59:25,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:59:25,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:59:25,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:59:25,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 20:59:25,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:59:25,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 20:59:25,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:59:25,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:59:25,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:59:25,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-26 20:59:25,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:59:25,848 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 20:59:25,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [141300529] [2020-10-26 20:59:25,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:59:25,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 20:59:25,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662360708] [2020-10-26 20:59:25,852 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 20:59:25,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:59:25,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 20:59:25,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 20:59:25,854 INFO L87 Difference]: Start difference. First operand 1688 states and 3016 transitions. Second operand 5 states. [2020-10-26 20:59:25,985 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 20:59:36,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:59:36,703 INFO L93 Difference]: Finished difference Result 5075 states and 9133 transitions. [2020-10-26 20:59:36,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 20:59:36,703 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 811 [2020-10-26 20:59:36,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:59:36,725 INFO L225 Difference]: With dead ends: 5075 [2020-10-26 20:59:36,726 INFO L226 Difference]: Without dead ends: 3393 [2020-10-26 20:59:36,731 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 20:59:36,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3393 states. [2020-10-26 20:59:36,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3393 to 3378. [2020-10-26 20:59:36,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3378 states. [2020-10-26 20:59:36,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3378 states to 3378 states and 5691 transitions. [2020-10-26 20:59:36,827 INFO L78 Accepts]: Start accepts. Automaton has 3378 states and 5691 transitions. Word has length 811 [2020-10-26 20:59:36,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:59:36,829 INFO L481 AbstractCegarLoop]: Abstraction has 3378 states and 5691 transitions. [2020-10-26 20:59:36,829 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 20:59:36,829 INFO L276 IsEmpty]: Start isEmpty. Operand 3378 states and 5691 transitions. [2020-10-26 20:59:36,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 814 [2020-10-26 20:59:36,858 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:59:36,859 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:59:36,859 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 20:59:36,859 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:59:36,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:59:36,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1234453505, now seen corresponding path program 1 times [2020-10-26 20:59:36,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:59:36,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [177850077] [2020-10-26 20:59:36,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:59:36,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:59:36,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:59:38,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:59:38,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 831 [2020-10-26 20:59:38,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:59:38,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1679 [2020-10-26 20:59:38,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:59:38,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 20:59:38,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:59:38,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-26 20:59:38,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:59:38,982 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-26 20:59:38,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:59:38,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:59:38,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:59:39,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:59:39,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:59:39,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:59:39,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 20:59:39,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:59:39,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:59:39,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:59:39,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:59:39,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:59:39,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:59:39,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:59:39,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:59:39,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:59:39,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-26 20:59:39,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:59:39,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-26 20:59:39,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:59:39,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:59:39,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:59:39,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-26 20:59:39,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 20:59:39,749 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 20:59:39,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [177850077] [2020-10-26 20:59:39,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 20:59:39,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 20:59:39,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540383258] [2020-10-26 20:59:39,752 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:59:39,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:59:39,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:59:39,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:59:39,754 INFO L87 Difference]: Start difference. First operand 3378 states and 5691 transitions. Second operand 7 states. [2020-10-26 20:59:42,549 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 20:59:52,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:59:52,460 INFO L93 Difference]: Finished difference Result 10291 states and 17614 transitions. [2020-10-26 20:59:52,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 20:59:52,461 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 813 [2020-10-26 20:59:52,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:59:52,501 INFO L225 Difference]: With dead ends: 10291 [2020-10-26 20:59:52,501 INFO L226 Difference]: Without dead ends: 6919 [2020-10-26 20:59:52,511 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 20:59:52,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6919 states. [2020-10-26 20:59:52,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6919 to 6855. [2020-10-26 20:59:52,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6855 states. [2020-10-26 20:59:52,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6855 states to 6855 states and 10282 transitions. [2020-10-26 20:59:52,709 INFO L78 Accepts]: Start accepts. Automaton has 6855 states and 10282 transitions. Word has length 813 [2020-10-26 20:59:52,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:59:52,710 INFO L481 AbstractCegarLoop]: Abstraction has 6855 states and 10282 transitions. [2020-10-26 20:59:52,710 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:59:52,710 INFO L276 IsEmpty]: Start isEmpty. Operand 6855 states and 10282 transitions. [2020-10-26 20:59:52,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 902 [2020-10-26 20:59:52,735 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:59:52,736 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:59:52,737 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 20:59:52,737 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:59:52,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:59:52,738 INFO L82 PathProgramCache]: Analyzing trace with hash 2049913421, now seen corresponding path program 1 times [2020-10-26 20:59:52,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:59:52,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [705621483] [2020-10-26 20:59:52,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:59:52,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:59:52,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:59:52,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:59:54,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:59:57,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:59:57,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 923 [2020-10-26 20:59:57,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 20:59:57,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-26 20:59:57,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:59:57,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 20:59:57,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:59:57,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-26 20:59:57,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:59:58,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:59:58,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:59:58,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:59:58,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:59:58,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:59:58,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:59:58,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 20:59:58,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:59:58,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:59:58,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:59:58,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:59:58,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:59:58,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:59:58,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:59:58,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:59:58,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:59:58,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:59:58,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-26 20:59:58,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:59:58,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-26 20:59:58,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:59:58,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:59:58,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:59:58,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-26 20:59:58,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:59:58,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-26 20:59:58,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:59:58,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:59:58,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:59:58,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-26 20:59:58,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:59:58,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-26 20:59:58,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:59:58,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:59:58,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:59:58,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-26 20:59:58,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:59:58,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-26 20:59:58,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:59:58,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:59:58,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:59:58,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-26 20:59:58,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:59:58,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 20:59:58,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:59:58,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:59:58,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-26 20:59:58,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:59:58,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:59:59,153 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 105 proven. 34 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-10-26 20:59:59,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [705621483] [2020-10-26 20:59:59,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:59:59,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 20:59:59,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785425838] [2020-10-26 20:59:59,156 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 20:59:59,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:59:59,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 20:59:59,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 20:59:59,157 INFO L87 Difference]: Start difference. First operand 6855 states and 10282 transitions. Second operand 8 states. [2020-10-26 20:59:59,313 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 21:00:02,530 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-26 21:00:12,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:00:12,328 INFO L93 Difference]: Finished difference Result 20714 states and 32235 transitions. [2020-10-26 21:00:12,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 21:00:12,333 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 901 [2020-10-26 21:00:12,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:00:12,399 INFO L225 Difference]: With dead ends: 20714 [2020-10-26 21:00:12,400 INFO L226 Difference]: Without dead ends: 13865 [2020-10-26 21:00:12,419 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-26 21:00:12,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13865 states. [2020-10-26 21:00:12,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13865 to 13766. [2020-10-26 21:00:12,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13766 states. [2020-10-26 21:00:12,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13766 states to 13766 states and 20469 transitions. [2020-10-26 21:00:12,802 INFO L78 Accepts]: Start accepts. Automaton has 13766 states and 20469 transitions. Word has length 901 [2020-10-26 21:00:12,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:00:12,802 INFO L481 AbstractCegarLoop]: Abstraction has 13766 states and 20469 transitions. [2020-10-26 21:00:12,802 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 21:00:12,803 INFO L276 IsEmpty]: Start isEmpty. Operand 13766 states and 20469 transitions. [2020-10-26 21:00:12,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 906 [2020-10-26 21:00:12,854 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:00:12,855 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:00:12,855 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 21:00:12,855 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:00:12,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:00:12,856 INFO L82 PathProgramCache]: Analyzing trace with hash -1522144787, now seen corresponding path program 1 times [2020-10-26 21:00:12,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:00:12,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1736729899] [2020-10-26 21:00:12,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:00:12,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:00:12,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:00:13,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:00:14,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:00:15,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:00:17,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:00:17,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 927 [2020-10-26 21:00:17,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 21:00:17,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-26 21:00:17,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:00:17,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-26 21:00:17,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:00:17,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-26 21:00:17,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:00:18,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:00:18,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:00:18,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:00:18,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:00:18,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:00:18,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:00:18,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 21:00:18,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:00:18,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:00:18,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:00:18,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:00:18,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:00:18,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:00:18,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:00:18,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:00:18,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:00:18,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:00:18,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 21:00:18,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:00:18,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-26 21:00:18,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:00:18,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:00:18,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:00:18,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-26 21:00:18,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:00:18,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-26 21:00:18,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:00:18,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:00:18,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:00:18,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:00:18,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 21:00:18,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:00:18,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-26 21:00:18,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:00:18,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:00:18,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:00:18,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 21:00:18,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:00:18,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-26 21:00:18,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:00:18,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:00:18,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:00:18,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-26 21:00:18,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:00:18,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-26 21:00:18,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:00:18,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:00:18,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:00:18,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-26 21:00:18,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:00:19,072 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 120 proven. 18 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-26 21:00:19,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1736729899] [2020-10-26 21:00:19,073 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:00:19,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 21:00:19,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024034609] [2020-10-26 21:00:19,074 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 21:00:19,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:00:19,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 21:00:19,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 21:00:19,075 INFO L87 Difference]: Start difference. First operand 13766 states and 20469 transitions. Second operand 8 states. [2020-10-26 21:00:29,299 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 21:00:31,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:00:31,862 INFO L93 Difference]: Finished difference Result 34551 states and 53497 transitions. [2020-10-26 21:00:31,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 21:00:31,863 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 905 [2020-10-26 21:00:31,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:00:31,946 INFO L225 Difference]: With dead ends: 34551 [2020-10-26 21:00:31,946 INFO L226 Difference]: Without dead ends: 20791 [2020-10-26 21:00:31,987 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-26 21:00:32,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20791 states. [2020-10-26 21:00:32,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20791 to 20670. [2020-10-26 21:00:32,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20670 states. [2020-10-26 21:00:32,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20670 states to 20670 states and 28166 transitions. [2020-10-26 21:00:32,781 INFO L78 Accepts]: Start accepts. Automaton has 20670 states and 28166 transitions. Word has length 905 [2020-10-26 21:00:32,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:00:32,782 INFO L481 AbstractCegarLoop]: Abstraction has 20670 states and 28166 transitions. [2020-10-26 21:00:32,782 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 21:00:32,782 INFO L276 IsEmpty]: Start isEmpty. Operand 20670 states and 28166 transitions. [2020-10-26 21:00:32,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 969 [2020-10-26 21:00:32,851 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:00:32,852 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:00:32,852 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 21:00:32,852 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:00:32,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:00:32,853 INFO L82 PathProgramCache]: Analyzing trace with hash -686998870, now seen corresponding path program 1 times [2020-10-26 21:00:32,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:00:32,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1415167238] [2020-10-26 21:00:32,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:00:32,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:00:32,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:00:33,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:00:33,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:00:35,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:00:37,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:00:37,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 990 [2020-10-26 21:00:37,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 21:00:37,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-26 21:00:37,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:00:37,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 21:00:37,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:00:37,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-26 21:00:37,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 21:00:38,196 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-26 21:00:38,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:00:38,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:00:38,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:00:38,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:00:38,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:00:38,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:00:38,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 21:00:38,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:00:38,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:00:38,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:00:38,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:00:38,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:00:38,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:00:38,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:00:38,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:00:38,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:00:38,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 21:00:38,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:00:38,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-26 21:00:38,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:00:38,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:00:38,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:00:38,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-26 21:00:38,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:00:38,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-26 21:00:38,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:00:38,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:00:38,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:00:38,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-26 21:00:38,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:00:38,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-26 21:00:38,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:00:38,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:00:38,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 138 [2020-10-26 21:00:38,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:00:38,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:00:38,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-26 21:00:38,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:00:38,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:00:38,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:00:38,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-26 21:00:38,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:00:38,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 21:00:38,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:00:38,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:00:38,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-26 21:00:38,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:00:38,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:00:39,028 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 167 proven. 6 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-10-26 21:00:39,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1415167238] [2020-10-26 21:00:39,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:00:39,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 21:00:39,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904166649] [2020-10-26 21:00:39,030 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 21:00:39,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:00:39,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 21:00:39,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:00:39,031 INFO L87 Difference]: Start difference. First operand 20670 states and 28166 transitions. Second operand 7 states. [2020-10-26 21:00:42,077 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-26 21:00:49,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:00:49,471 INFO L93 Difference]: Finished difference Result 41588 states and 57100 transitions. [2020-10-26 21:00:49,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 21:00:49,472 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 968 [2020-10-26 21:00:49,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:00:49,541 INFO L225 Difference]: With dead ends: 41588 [2020-10-26 21:00:49,541 INFO L226 Difference]: Without dead ends: 20924 [2020-10-26 21:00:49,582 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-26 21:00:49,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20924 states. [2020-10-26 21:00:50,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20924 to 20858. [2020-10-26 21:00:50,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20858 states. [2020-10-26 21:00:50,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20858 states to 20858 states and 28598 transitions. [2020-10-26 21:00:50,070 INFO L78 Accepts]: Start accepts. Automaton has 20858 states and 28598 transitions. Word has length 968 [2020-10-26 21:00:50,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:00:50,071 INFO L481 AbstractCegarLoop]: Abstraction has 20858 states and 28598 transitions. [2020-10-26 21:00:50,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 21:00:50,071 INFO L276 IsEmpty]: Start isEmpty. Operand 20858 states and 28598 transitions. [2020-10-26 21:00:50,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 978 [2020-10-26 21:00:50,121 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:00:50,122 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:00:50,123 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 21:00:50,123 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:00:50,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:00:50,124 INFO L82 PathProgramCache]: Analyzing trace with hash -1399750179, now seen corresponding path program 1 times [2020-10-26 21:00:50,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:00:50,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1692727136] [2020-10-26 21:00:50,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:00:50,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:00:50,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:00:50,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:00:50,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:00:51,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:00:55,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:00:55,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 999 [2020-10-26 21:00:55,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 21:00:55,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-26 21:00:55,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:00:55,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 21:00:55,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:00:55,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-26 21:00:55,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:00:55,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:00:55,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:00:55,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:00:55,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:00:55,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:00:55,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:00:55,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 21:00:55,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:00:55,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:00:55,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:00:55,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:00:55,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:00:55,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:00:55,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:00:55,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:00:55,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:00:55,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-26 21:00:55,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:00:55,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 21:00:55,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:00:55,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:00:55,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:00:55,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-26 21:00:55,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:00:55,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-26 21:00:55,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:00:55,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:00:55,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:00:55,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-26 21:00:55,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:00:55,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-26 21:00:55,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:00:55,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:00:55,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 138 [2020-10-26 21:00:55,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:00:55,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:00:55,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-10-26 21:00:55,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:00:55,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:00:55,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:00:55,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-26 21:00:55,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:00:55,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 21:00:55,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:00:55,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:00:55,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-26 21:00:55,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:00:55,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:00:56,151 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 176 proven. 24 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-10-26 21:00:56,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1692727136] [2020-10-26 21:00:56,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:00:56,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 21:00:56,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802332758] [2020-10-26 21:00:56,157 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 21:00:56,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:00:56,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 21:00:56,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:00:56,158 INFO L87 Difference]: Start difference. First operand 20858 states and 28598 transitions. Second operand 7 states. [2020-10-26 21:01:06,149 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-26 21:01:09,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:01:09,036 INFO L93 Difference]: Finished difference Result 62530 states and 89531 transitions. [2020-10-26 21:01:09,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 21:01:09,038 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 977 [2020-10-26 21:01:09,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:01:09,174 INFO L225 Difference]: With dead ends: 62530 [2020-10-26 21:01:09,174 INFO L226 Difference]: Without dead ends: 41678 [2020-10-26 21:01:09,214 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 21:01:09,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41678 states. [2020-10-26 21:01:10,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41678 to 41550. [2020-10-26 21:01:10,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41550 states. [2020-10-26 21:01:10,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41550 states to 41550 states and 56698 transitions. [2020-10-26 21:01:10,278 INFO L78 Accepts]: Start accepts. Automaton has 41550 states and 56698 transitions. Word has length 977 [2020-10-26 21:01:10,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:01:10,278 INFO L481 AbstractCegarLoop]: Abstraction has 41550 states and 56698 transitions. [2020-10-26 21:01:10,278 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 21:01:10,278 INFO L276 IsEmpty]: Start isEmpty. Operand 41550 states and 56698 transitions. [2020-10-26 21:01:10,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 990 [2020-10-26 21:01:10,644 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:01:10,645 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:01:10,646 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 21:01:10,646 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:01:10,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:01:10,647 INFO L82 PathProgramCache]: Analyzing trace with hash 981708279, now seen corresponding path program 1 times [2020-10-26 21:01:10,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:01:10,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1073104190] [2020-10-26 21:01:10,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:01:10,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:01:10,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:01:10,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:01:11,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:01:13,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:01:15,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:01:15,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1013 [2020-10-26 21:01:15,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 21:01:15,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-26 21:01:15,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:01:15,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 21:01:15,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:01:15,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-10-26 21:01:15,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:01:15,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:01:15,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:01:15,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:01:15,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:01:15,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:01:15,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:01:15,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 21:01:15,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:01:15,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:01:15,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:01:15,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:01:15,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:01:16,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:01:16,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:01:16,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:01:16,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:01:16,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:01:16,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-26 21:01:16,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:01:16,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 246 [2020-10-26 21:01:16,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:01:16,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:01:16,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:01:16,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-10-26 21:01:16,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:01:16,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-26 21:01:16,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:01:16,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:01:16,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:01:16,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-26 21:01:16,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:01:16,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 21:01:16,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:01:16,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:01:16,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:01:16,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-26 21:01:16,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:01:16,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-10-26 21:01:16,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:01:16,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:01:16,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:01:16,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-26 21:01:16,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:01:16,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 21:01:16,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:01:16,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:01:16,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-26 21:01:16,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:01:16,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:01:16,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-10-26 21:01:16,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:01:16,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:01:16,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:01:16,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-26 21:01:16,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:01:16,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 21:01:16,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:01:16,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:01:16,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-26 21:01:16,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:01:16,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:01:16,870 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 194 proven. 43 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-10-26 21:01:16,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1073104190] [2020-10-26 21:01:16,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:01:16,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 21:01:16,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218204653] [2020-10-26 21:01:16,873 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 21:01:16,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:01:16,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 21:01:16,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:01:16,878 INFO L87 Difference]: Start difference. First operand 41550 states and 56698 transitions. Second operand 7 states. [2020-10-26 21:01:31,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:01:31,060 INFO L93 Difference]: Finished difference Result 113494 states and 159992 transitions. [2020-10-26 21:01:31,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 21:01:31,060 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 989 [2020-10-26 21:01:31,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:01:31,336 INFO L225 Difference]: With dead ends: 113494 [2020-10-26 21:01:31,336 INFO L226 Difference]: Without dead ends: 71950 [2020-10-26 21:01:31,414 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 21:01:31,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71950 states. [2020-10-26 21:01:32,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71950 to 65956. [2020-10-26 21:01:32,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65956 states. [2020-10-26 21:01:33,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65956 states to 65956 states and 86094 transitions. [2020-10-26 21:01:33,080 INFO L78 Accepts]: Start accepts. Automaton has 65956 states and 86094 transitions. Word has length 989 [2020-10-26 21:01:33,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:01:33,080 INFO L481 AbstractCegarLoop]: Abstraction has 65956 states and 86094 transitions. [2020-10-26 21:01:33,080 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 21:01:33,081 INFO L276 IsEmpty]: Start isEmpty. Operand 65956 states and 86094 transitions. [2020-10-26 21:01:33,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1151 [2020-10-26 21:01:33,169 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:01:33,170 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:01:33,170 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 21:01:33,170 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:01:33,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:01:33,171 INFO L82 PathProgramCache]: Analyzing trace with hash -813310756, now seen corresponding path program 1 times [2020-10-26 21:01:33,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:01:33,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1571360119] [2020-10-26 21:01:33,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:01:33,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:01:33,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:01:33,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:01:34,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:01:34,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:01:38,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:01:38,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:01:38,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1178 [2020-10-26 21:01:38,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 21:01:38,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5079 [2020-10-26 21:01:38,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:01:38,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 21:01:38,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-26 21:01:38,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-26 21:01:38,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:01:38,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:01:38,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:01:38,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:01:38,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:01:38,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:01:38,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:01:38,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 21:01:38,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:01:38,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:01:38,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:01:38,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:01:38,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:01:38,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:01:38,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:01:38,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:01:38,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:01:38,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 21:01:38,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:01:38,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 21:01:38,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:01:38,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:01:38,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:01:38,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-26 21:01:38,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:01:38,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-26 21:01:38,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:01:38,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:01:38,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:01:38,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:01:38,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 21:01:38,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:01:38,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-10-26 21:01:38,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:01:38,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:01:38,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:01:38,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 21:01:38,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:01:38,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-26 21:01:38,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:01:38,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:01:38,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:01:38,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-26 21:01:38,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:01:38,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-26 21:01:38,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:01:38,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:01:39,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:01:39,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-26 21:01:39,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 22 [2020-10-26 21:01:39,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-10-26 21:01:39,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:01:39,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:01:39,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:01:39,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-26 21:01:39,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:01:39,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 21:01:39,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:01:39,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:01:39,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-26 21:01:39,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:01:39,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:01:39,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-10-26 21:01:39,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:01:39,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:01:39,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:01:39,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-26 21:01:39,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:01:39,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-26 21:01:39,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:01:39,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:01:39,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 138 [2020-10-26 21:01:39,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:01:39,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:01:39,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2020-10-26 21:01:39,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:01:39,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:01:39,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:01:39,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-26 21:01:39,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:01:39,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 21:01:39,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:01:39,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:01:39,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-26 21:01:39,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:01:39,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:01:40,106 INFO L134 CoverageAnalysis]: Checked inductivity of 864 backedges. 396 proven. 298 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2020-10-26 21:01:40,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1571360119] [2020-10-26 21:01:40,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:01:40,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-26 21:01:40,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102011391] [2020-10-26 21:01:40,109 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 21:01:40,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:01:40,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 21:01:40,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-26 21:01:40,109 INFO L87 Difference]: Start difference. First operand 65956 states and 86094 transitions. Second operand 9 states. [2020-10-26 21:01:40,418 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-26 21:01:43,591 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 21:01:58,008 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-26 21:02:03,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:02:03,928 INFO L93 Difference]: Finished difference Result 172675 states and 239052 transitions. [2020-10-26 21:02:03,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-26 21:02:03,929 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1150 [2020-10-26 21:02:03,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:02:04,407 INFO L225 Difference]: With dead ends: 172675 [2020-10-26 21:02:04,408 INFO L226 Difference]: Without dead ends: 107559 [2020-10-26 21:02:04,530 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=130, Invalid=422, Unknown=0, NotChecked=0, Total=552 [2020-10-26 21:02:05,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107559 states. [2020-10-26 21:02:08,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107559 to 104317. [2020-10-26 21:02:08,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104317 states. [2020-10-26 21:02:08,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104317 states to 104317 states and 139120 transitions. [2020-10-26 21:02:08,547 INFO L78 Accepts]: Start accepts. Automaton has 104317 states and 139120 transitions. Word has length 1150 [2020-10-26 21:02:08,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:02:08,547 INFO L481 AbstractCegarLoop]: Abstraction has 104317 states and 139120 transitions. [2020-10-26 21:02:08,547 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 21:02:08,548 INFO L276 IsEmpty]: Start isEmpty. Operand 104317 states and 139120 transitions. [2020-10-26 21:02:08,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1190 [2020-10-26 21:02:08,721 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:02:08,722 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:02:08,723 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 21:02:08,723 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:02:08,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:02:08,724 INFO L82 PathProgramCache]: Analyzing trace with hash 404499747, now seen corresponding path program 1 times [2020-10-26 21:02:08,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:02:08,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1930378073] [2020-10-26 21:02:08,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:02:08,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:02:09,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:02:09,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:02:09,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:02:09,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:02:10,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:02:14,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:02:14,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1217 [2020-10-26 21:02:14,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 21:02:14,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5090 [2020-10-26 21:02:14,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:02:14,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 21:02:14,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:02:14,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-10-26 21:02:14,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:02:14,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:02:14,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:02:14,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:02:14,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:02:14,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:02:14,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:02:14,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 21:02:14,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:02:14,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:02:14,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:02:14,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:02:14,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:02:14,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:02:14,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:02:14,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:02:14,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:02:14,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-26 21:02:14,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:02:14,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-26 21:02:14,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:02:14,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:02:14,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:02:14,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-26 21:02:14,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:02:14,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-26 21:02:14,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:02:14,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:02:14,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:02:14,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-26 21:02:14,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:02:14,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 21:02:14,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:02:14,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:02:14,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-26 21:02:14,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:02:14,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:02:14,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-26 21:02:14,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:02:14,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:02:14,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:02:14,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-26 21:02:14,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:02:14,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-26 21:02:14,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:02:14,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:02:14,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 143 [2020-10-26 21:02:14,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:02:14,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:02:15,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-10-26 21:02:15,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:02:15,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:02:15,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:02:15,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-26 21:02:15,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:02:15,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 21:02:15,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:02:15,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:02:15,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-26 21:02:15,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:02:15,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:02:15,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2020-10-26 21:02:15,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:02:15,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:02:15,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:02:15,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-26 21:02:15,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:02:15,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-26 21:02:15,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:02:15,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:02:15,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-26 21:02:15,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:02:15,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:02:15,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-10-26 21:02:15,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:02:15,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:02:15,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:02:15,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-26 21:02:15,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:02:15,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 21:02:15,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:02:15,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:02:15,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-26 21:02:15,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:02:15,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:02:16,411 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 379 proven. 222 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2020-10-26 21:02:16,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1930378073] [2020-10-26 21:02:16,411 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:02:16,411 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 21:02:16,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439328942] [2020-10-26 21:02:16,412 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 21:02:16,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:02:16,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 21:02:16,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:02:16,414 INFO L87 Difference]: Start difference. First operand 104317 states and 139120 transitions. Second operand 7 states. [2020-10-26 21:02:16,546 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-26 21:02:21,919 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 98