/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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/Problem12_label10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 12:14:36,049 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 12:14:36,052 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 12:14:36,089 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 12:14:36,090 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 12:14:36,091 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 12:14:36,093 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 12:14:36,095 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 12:14:36,097 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 12:14:36,098 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 12:14:36,099 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 12:14:36,101 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 12:14:36,101 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 12:14:36,102 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 12:14:36,104 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 12:14:36,105 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 12:14:36,106 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 12:14:36,107 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 12:14:36,110 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 12:14:36,112 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 12:14:36,114 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 12:14:36,123 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 12:14:36,129 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 12:14:36,131 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 12:14:36,134 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 12:14:36,139 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 12:14:36,140 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 12:14:36,141 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 12:14:36,142 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 12:14:36,146 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 12:14:36,147 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 12:14:36,148 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 12:14:36,150 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 12:14:36,152 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 12:14:36,154 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 12:14:36,154 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 12:14:36,155 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 12:14:36,155 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 12:14:36,156 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 12:14:36,157 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 12:14:36,158 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 12:14:36,159 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 [2020-10-28 12:14:36,225 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 12:14:36,225 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 12:14:36,228 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 12:14:36,228 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 12:14:36,228 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 12:14:36,229 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 12:14:36,231 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 12:14:36,231 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 12:14:36,231 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 12:14:36,232 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 12:14:36,232 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 12:14:36,232 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 12:14:36,232 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 12:14:36,232 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 12:14:36,233 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 12:14:36,233 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 12:14:36,233 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 12:14:36,234 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 12:14:36,234 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 12:14:36,235 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 12:14:36,236 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 12:14:36,236 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:14:36,236 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 12:14:36,237 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 12:14:36,237 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 12:14:36,237 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 12:14:36,237 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 12:14:36,238 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 12:14:36,238 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 12:14:36,238 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 12:14:36,651 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 12:14:36,682 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 12:14:36,685 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 12:14:36,686 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 12:14:36,687 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 12:14:36,688 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label10.c [2020-10-28 12:14:36,779 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ab2fb7ceb/c891e2ef4aac4154aed656897b7a2f80/FLAG3d892a501 [2020-10-28 12:14:37,722 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 12:14:37,722 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label10.c [2020-10-28 12:14:37,770 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ab2fb7ceb/c891e2ef4aac4154aed656897b7a2f80/FLAG3d892a501 [2020-10-28 12:14:38,205 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ab2fb7ceb/c891e2ef4aac4154aed656897b7a2f80 [2020-10-28 12:14:38,208 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 12:14:38,216 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 12:14:38,218 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 12:14:38,218 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 12:14:38,222 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 12:14:38,223 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:14:38" (1/1) ... [2020-10-28 12:14:38,226 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f6629ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:14:38, skipping insertion in model container [2020-10-28 12:14:38,227 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:14:38" (1/1) ... [2020-10-28 12:14:38,235 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 12:14:38,392 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 12:14:39,951 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:14:39,966 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 12:14:40,594 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:14:40,626 INFO L208 MainTranslator]: Completed translation [2020-10-28 12:14:40,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:14:40 WrapperNode [2020-10-28 12:14:40,627 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 12:14:40,628 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 12:14:40,628 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 12:14:40,628 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 12:14:40,641 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:14:40" (1/1) ... [2020-10-28 12:14:40,642 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:14:40" (1/1) ... [2020-10-28 12:14:40,704 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:14:40" (1/1) ... [2020-10-28 12:14:40,705 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:14:40" (1/1) ... [2020-10-28 12:14:40,860 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:14:40" (1/1) ... [2020-10-28 12:14:40,898 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:14:40" (1/1) ... [2020-10-28 12:14:40,929 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:14:40" (1/1) ... [2020-10-28 12:14:40,960 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 12:14:40,962 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 12:14:40,962 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 12:14:40,963 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 12:14:40,964 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:14:40" (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 [2020-10-28 12:14:41,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 12:14:41,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 12:14:41,042 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 12:14:41,042 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 12:14:41,042 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 12:14:41,043 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 12:14:41,043 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-28 12:14:41,044 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 12:14:41,044 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 12:14:41,044 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 12:14:41,045 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 12:14:41,045 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-28 12:14:41,045 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 12:14:41,045 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 12:14:41,045 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 12:14:41,046 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 12:14:41,047 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 12:14:41,047 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 12:14:41,047 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 12:14:41,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 12:14:41,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 12:14:41,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 12:14:41,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 12:14:41,048 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 12:14:41,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 12:14:46,185 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 12:14:46,185 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 12:14:46,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:14:46 BoogieIcfgContainer [2020-10-28 12:14:46,191 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 12:14:46,195 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 12:14:46,196 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 12:14:46,200 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 12:14:46,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:14:38" (1/3) ... [2020-10-28 12:14:46,202 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f6216b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:14:46, skipping insertion in model container [2020-10-28 12:14:46,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:14:40" (2/3) ... [2020-10-28 12:14:46,202 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f6216b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:14:46, skipping insertion in model container [2020-10-28 12:14:46,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:14:46" (3/3) ... [2020-10-28 12:14:46,205 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label10.c [2020-10-28 12:14:46,218 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 12:14:46,225 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 12:14:46,240 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 12:14:46,299 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 12:14:46,300 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 12:14:46,300 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 12:14:46,300 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 12:14:46,300 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 12:14:46,300 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 12:14:46,300 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 12:14:46,301 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 12:14:46,346 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states. [2020-10-28 12:14:46,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-28 12:14:46,352 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:14:46,353 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] [2020-10-28 12:14:46,354 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:14:46,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:14:46,359 INFO L82 PathProgramCache]: Analyzing trace with hash 1435068900, now seen corresponding path program 1 times [2020-10-28 12:14:46,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:14:46,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1723055630] [2020-10-28 12:14:46,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:14:46,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:46,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:47,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:47,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-28 12:14:47,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:14:47,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 555 [2020-10-28 12:14:47,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:47,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:47,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:14:47,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:14:47,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 12:14:47,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 12:14:47,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:14:47,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:47,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:47,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:47,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:14:47,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:14:47,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 12:14:47,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:47,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:47,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:14:47,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:14:47,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:14:47,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:14:47,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:14:47,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1723055630] [2020-10-28 12:14:47,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:14:47,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 12:14:47,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607198098] [2020-10-28 12:14:47,310 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:14:47,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:14:47,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:14:47,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:14:47,327 INFO L87 Difference]: Start difference. First operand 843 states. Second operand 5 states. [2020-10-28 12:14:58,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:14:58,847 INFO L93 Difference]: Finished difference Result 2476 states and 4742 transitions. [2020-10-28 12:14:58,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:14:58,850 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-10-28 12:14:58,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:14:58,886 INFO L225 Difference]: With dead ends: 2476 [2020-10-28 12:14:58,886 INFO L226 Difference]: Without dead ends: 1569 [2020-10-28 12:14:58,902 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:14:58,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2020-10-28 12:14:59,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1554. [2020-10-28 12:14:59,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1554 states. [2020-10-28 12:14:59,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 2522 transitions. [2020-10-28 12:14:59,090 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 2522 transitions. Word has length 34 [2020-10-28 12:14:59,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:14:59,091 INFO L481 AbstractCegarLoop]: Abstraction has 1554 states and 2522 transitions. [2020-10-28 12:14:59,092 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:14:59,092 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 2522 transitions. [2020-10-28 12:14:59,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-28 12:14:59,101 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:14:59,101 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:14:59,102 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 12:14:59,102 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:14:59,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:14:59,104 INFO L82 PathProgramCache]: Analyzing trace with hash -1877233214, now seen corresponding path program 1 times [2020-10-28 12:14:59,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:14:59,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [199979142] [2020-10-28 12:14:59,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:14:59,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:59,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:59,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:15:00,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:15:00,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-28 12:15:00,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:15:00,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 897 [2020-10-28 12:15:00,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:15:00,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:15:00,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:15:00,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-28 12:15:00,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 12:15:00,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 12:15:00,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:15:00,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:15:00,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:15:00,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:15:00,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:15:00,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:15:00,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 12:15:00,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:15:00,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:15:00,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:15:00,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:15:00,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:15:00,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:15:00,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:15:00,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:15:00,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:15:00,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:15:00,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 12:15:00,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:15:00,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-28 12:15:00,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:15:00,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:15:00,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:15:00,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:15:00,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 12:15:00,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:15:00,423 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 25 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:15:00,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [199979142] [2020-10-28 12:15:00,424 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:15:00,424 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:15:00,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992656643] [2020-10-28 12:15:00,427 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:15:00,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:15:00,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:15:00,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:15:00,429 INFO L87 Difference]: Start difference. First operand 1554 states and 2522 transitions. Second operand 5 states. [2020-10-28 12:15:11,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:15:11,675 INFO L93 Difference]: Finished difference Result 4673 states and 7650 transitions. [2020-10-28 12:15:11,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:15:11,677 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2020-10-28 12:15:11,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:15:11,701 INFO L225 Difference]: With dead ends: 4673 [2020-10-28 12:15:11,701 INFO L226 Difference]: Without dead ends: 3125 [2020-10-28 12:15:11,707 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:15:11,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3125 states. [2020-10-28 12:15:11,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3125 to 3112. [2020-10-28 12:15:11,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3112 states. [2020-10-28 12:15:11,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3112 states to 3112 states and 4442 transitions. [2020-10-28 12:15:11,805 INFO L78 Accepts]: Start accepts. Automaton has 3112 states and 4442 transitions. Word has length 109 [2020-10-28 12:15:11,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:15:11,805 INFO L481 AbstractCegarLoop]: Abstraction has 3112 states and 4442 transitions. [2020-10-28 12:15:11,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:15:11,806 INFO L276 IsEmpty]: Start isEmpty. Operand 3112 states and 4442 transitions. [2020-10-28 12:15:11,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-28 12:15:11,808 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:15:11,809 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:15:11,809 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 12:15:11,809 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:15:11,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:15:11,810 INFO L82 PathProgramCache]: Analyzing trace with hash -1538913478, now seen corresponding path program 1 times [2020-10-28 12:15:11,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:15:11,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [344755747] [2020-10-28 12:15:11,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:15:11,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:15:11,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:15:12,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:15:12,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:15:13,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:15:13,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-28 12:15:13,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:15:13,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1159 [2020-10-28 12:15:13,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:15:13,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:15:13,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:15:13,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:15:13,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-28 12:15:13,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:15:13,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:15:13,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:15:13,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:15:13,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:15:13,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:15:13,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:15:13,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 12:15:13,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:15:13,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:15:13,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:15:13,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:15:13,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:15:13,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:15:13,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:15:13,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:15:13,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:15:13,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:15:13,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-28 12:15:13,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:15:13,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-28 12:15:13,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:15:13,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:15:13,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:15:13,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:15:13,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-28 12:15:13,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:15:13,441 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:15:13,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [344755747] [2020-10-28 12:15:13,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:15:13,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:15:13,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299956078] [2020-10-28 12:15:13,443 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:15:13,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:15:13,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:15:13,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:15:13,444 INFO L87 Difference]: Start difference. First operand 3112 states and 4442 transitions. Second operand 7 states. [2020-10-28 12:15:28,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:15:28,625 INFO L93 Difference]: Finished difference Result 9488 states and 13787 transitions. [2020-10-28 12:15:28,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:15:28,626 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 113 [2020-10-28 12:15:28,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:15:28,662 INFO L225 Difference]: With dead ends: 9488 [2020-10-28 12:15:28,662 INFO L226 Difference]: Without dead ends: 6382 [2020-10-28 12:15:28,670 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:15:28,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6382 states. [2020-10-28 12:15:28,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6382 to 6294. [2020-10-28 12:15:28,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6294 states. [2020-10-28 12:15:28,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6294 states to 6294 states and 8483 transitions. [2020-10-28 12:15:28,885 INFO L78 Accepts]: Start accepts. Automaton has 6294 states and 8483 transitions. Word has length 113 [2020-10-28 12:15:28,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:15:28,886 INFO L481 AbstractCegarLoop]: Abstraction has 6294 states and 8483 transitions. [2020-10-28 12:15:28,886 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:15:28,886 INFO L276 IsEmpty]: Start isEmpty. Operand 6294 states and 8483 transitions. [2020-10-28 12:15:28,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-28 12:15:28,894 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:15:28,894 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:15:28,895 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 12:15:28,895 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:15:28,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:15:28,896 INFO L82 PathProgramCache]: Analyzing trace with hash -1257016394, now seen corresponding path program 1 times [2020-10-28 12:15:28,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:15:28,896 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [649746546] [2020-10-28 12:15:28,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:15:28,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:15:28,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:15:29,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:15:30,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:15:30,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-28 12:15:30,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:15:30,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1214 [2020-10-28 12:15:30,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:15:30,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:15:30,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:15:30,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:15:30,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-28 12:15:30,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:15:30,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:15:30,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:15:30,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:15:30,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:15:30,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:15:30,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:15:30,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 12:15:30,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:15:30,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:15:30,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:15:30,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:15:30,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:15:30,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:15:30,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:15:30,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:15:30,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:15:30,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:15:30,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-28 12:15:30,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:15:30,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-10-28 12:15:30,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:15:30,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:15:30,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:15:30,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:15:30,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-28 12:15:30,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 12:15:30,750 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:15:30,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [649746546] [2020-10-28 12:15:30,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:15:30,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 12:15:30,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838851851] [2020-10-28 12:15:30,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:15:30,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:15:30,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:15:30,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:15:30,755 INFO L87 Difference]: Start difference. First operand 6294 states and 8483 transitions. Second operand 8 states. [2020-10-28 12:15:50,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:15:50,956 INFO L93 Difference]: Finished difference Result 25429 states and 35559 transitions. [2020-10-28 12:15:50,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 12:15:50,961 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 147 [2020-10-28 12:15:50,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:15:51,058 INFO L225 Difference]: With dead ends: 25429 [2020-10-28 12:15:51,058 INFO L226 Difference]: Without dead ends: 19141 [2020-10-28 12:15:51,075 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-28 12:15:51,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19141 states. [2020-10-28 12:15:51,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19141 to 18331. [2020-10-28 12:15:51,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18331 states. [2020-10-28 12:15:51,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18331 states to 18331 states and 23875 transitions. [2020-10-28 12:15:51,589 INFO L78 Accepts]: Start accepts. Automaton has 18331 states and 23875 transitions. Word has length 147 [2020-10-28 12:15:51,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:15:51,591 INFO L481 AbstractCegarLoop]: Abstraction has 18331 states and 23875 transitions. [2020-10-28 12:15:51,591 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:15:51,591 INFO L276 IsEmpty]: Start isEmpty. Operand 18331 states and 23875 transitions. [2020-10-28 12:15:51,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-28 12:15:51,598 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:15:51,599 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:15:51,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 12:15:51,599 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:15:51,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:15:51,599 INFO L82 PathProgramCache]: Analyzing trace with hash 768819996, now seen corresponding path program 1 times [2020-10-28 12:15:51,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:15:51,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1729652420] [2020-10-28 12:15:51,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:15:51,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:15:51,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:15:51,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:15:53,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:15:53,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-28 12:15:53,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:15:53,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1864 [2020-10-28 12:15:53,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:15:53,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:15:53,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:15:53,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:15:53,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-28 12:15:53,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:15:53,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:15:53,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:15:53,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:15:53,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:15:53,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:15:53,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:15:53,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 12:15:53,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:15:53,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:15:53,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:15:53,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:15:53,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:15:53,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:15:53,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:15:53,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:15:53,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:15:54,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:15:54,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-28 12:15:54,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:15:54,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-10-28 12:15:54,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:15:54,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:15:54,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:15:54,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:15:54,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-28 12:15:54,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 12:15:54,560 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:15:54,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1729652420] [2020-10-28 12:15:54,561 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:15:54,561 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 12:15:54,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888087641] [2020-10-28 12:15:54,562 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:15:54,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:15:54,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:15:54,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:15:54,563 INFO L87 Difference]: Start difference. First operand 18331 states and 23875 transitions. Second operand 8 states. [2020-10-28 12:16:13,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:16:13,924 INFO L93 Difference]: Finished difference Result 45147 states and 58605 transitions. [2020-10-28 12:16:13,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 12:16:13,926 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 182 [2020-10-28 12:16:13,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:16:14,025 INFO L225 Difference]: With dead ends: 45147 [2020-10-28 12:16:14,025 INFO L226 Difference]: Without dead ends: 26822 [2020-10-28 12:16:14,071 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-28 12:16:14,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26822 states. [2020-10-28 12:16:14,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26822 to 26647. [2020-10-28 12:16:14,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26647 states. [2020-10-28 12:16:14,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26647 states to 26647 states and 33782 transitions. [2020-10-28 12:16:14,716 INFO L78 Accepts]: Start accepts. Automaton has 26647 states and 33782 transitions. Word has length 182 [2020-10-28 12:16:14,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:16:14,716 INFO L481 AbstractCegarLoop]: Abstraction has 26647 states and 33782 transitions. [2020-10-28 12:16:14,717 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:16:14,717 INFO L276 IsEmpty]: Start isEmpty. Operand 26647 states and 33782 transitions. [2020-10-28 12:16:14,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2020-10-28 12:16:14,721 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:16:14,722 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:16:14,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 12:16:14,722 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:16:14,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:16:14,723 INFO L82 PathProgramCache]: Analyzing trace with hash 1260985748, now seen corresponding path program 1 times [2020-10-28 12:16:14,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:16:14,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [848804428] [2020-10-28 12:16:14,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:16:14,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:16:14,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:16:15,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:16:16,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:16:16,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:16:16,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 282 [2020-10-28 12:16:16,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:16:16,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1333 [2020-10-28 12:16:16,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:16:16,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:16:16,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:16:16,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-28 12:16:16,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-28 12:16:16,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:16:16,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:16:16,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:16:16,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:16:16,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:16:16,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:16:16,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:16:16,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:16:16,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:16:16,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:16:16,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:16:16,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:16:16,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:16:16,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:16:16,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:16:16,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:16:16,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:16:16,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:16:16,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-28 12:16:16,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:16:16,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-28 12:16:16,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:16:16,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:16:16,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:16:16,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:16:16,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-28 12:16:16,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:16:16,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-28 12:16:16,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:16:16,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:16:16,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:16:16,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 12:16:16,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:16:16,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-28 12:16:16,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:16:16,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:16:16,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:16:16,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:16:16,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-28 12:16:16,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:16:16,991 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 110 proven. 26 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 12:16:16,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [848804428] [2020-10-28 12:16:16,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:16:16,993 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 12:16:16,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299790171] [2020-10-28 12:16:16,994 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 12:16:16,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:16:16,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 12:16:16,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:16:16,995 INFO L87 Difference]: Start difference. First operand 26647 states and 33782 transitions. Second operand 6 states. [2020-10-28 12:16:34,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:16:34,477 INFO L93 Difference]: Finished difference Result 63148 states and 83756 transitions. [2020-10-28 12:16:34,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 12:16:34,479 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 268 [2020-10-28 12:16:34,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:16:34,645 INFO L225 Difference]: With dead ends: 63148 [2020-10-28 12:16:34,646 INFO L226 Difference]: Without dead ends: 36507 [2020-10-28 12:16:34,721 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:16:34,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36507 states. [2020-10-28 12:16:35,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36507 to 35635. [2020-10-28 12:16:35,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35635 states. [2020-10-28 12:16:35,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35635 states to 35635 states and 46870 transitions. [2020-10-28 12:16:35,763 INFO L78 Accepts]: Start accepts. Automaton has 35635 states and 46870 transitions. Word has length 268 [2020-10-28 12:16:35,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:16:35,765 INFO L481 AbstractCegarLoop]: Abstraction has 35635 states and 46870 transitions. [2020-10-28 12:16:35,765 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 12:16:35,765 INFO L276 IsEmpty]: Start isEmpty. Operand 35635 states and 46870 transitions. [2020-10-28 12:16:35,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-10-28 12:16:35,770 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:16:35,771 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:16:35,771 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 12:16:35,771 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:16:35,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:16:35,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1625676572, now seen corresponding path program 1 times [2020-10-28 12:16:35,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:16:35,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1294727068] [2020-10-28 12:16:35,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:16:35,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:16:35,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:16:35,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:16:36,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:16:38,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:16:38,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 286 [2020-10-28 12:16:38,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:16:38,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2414 [2020-10-28 12:16:38,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:16:38,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:16:38,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:16:38,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-28 12:16:38,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-28 12:16:38,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:16:38,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:16:38,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:16:38,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:16:38,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:16:38,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:16:38,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:16:38,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:16:38,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:16:38,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:16:38,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:16:38,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:16:38,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:16:38,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:16:38,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:16:38,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:16:38,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:16:38,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:16:38,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-28 12:16:38,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:16:38,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-28 12:16:38,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:16:38,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:16:38,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:16:38,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:16:38,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-28 12:16:38,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:16:38,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-28 12:16:38,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:16:38,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:16:38,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:16:38,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:16:38,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 12:16:38,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:16:38,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-28 12:16:38,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:16:38,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:16:38,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:16:38,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:16:38,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-28 12:16:38,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:16:38,975 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 50 proven. 2 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2020-10-28 12:16:38,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1294727068] [2020-10-28 12:16:38,976 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:16:38,976 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:16:38,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337422434] [2020-10-28 12:16:38,977 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:16:38,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:16:38,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:16:38,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:16:38,979 INFO L87 Difference]: Start difference. First operand 35635 states and 46870 transitions. Second operand 5 states. [2020-10-28 12:16:55,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:16:55,254 INFO L93 Difference]: Finished difference Result 102517 states and 138863 transitions. [2020-10-28 12:16:55,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:16:55,256 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 272 [2020-10-28 12:16:55,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:16:55,651 INFO L225 Difference]: With dead ends: 102517 [2020-10-28 12:16:55,652 INFO L226 Difference]: Without dead ends: 66034 [2020-10-28 12:16:55,774 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:16:55,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66034 states. [2020-10-28 12:16:57,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66034 to 65249. [2020-10-28 12:16:57,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65249 states. [2020-10-28 12:16:57,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65249 states to 65249 states and 85070 transitions. [2020-10-28 12:16:57,866 INFO L78 Accepts]: Start accepts. Automaton has 65249 states and 85070 transitions. Word has length 272 [2020-10-28 12:16:57,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:16:57,867 INFO L481 AbstractCegarLoop]: Abstraction has 65249 states and 85070 transitions. [2020-10-28 12:16:57,867 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:16:57,867 INFO L276 IsEmpty]: Start isEmpty. Operand 65249 states and 85070 transitions. [2020-10-28 12:16:57,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-10-28 12:16:57,872 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:16:57,872 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:16:57,873 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 12:16:57,873 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:16:57,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:16:57,874 INFO L82 PathProgramCache]: Analyzing trace with hash -144711846, now seen corresponding path program 1 times [2020-10-28 12:16:57,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:16:57,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1458930310] [2020-10-28 12:16:57,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:16:57,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:16:57,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:16:58,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:16:59,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:16:59,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 12:16:59,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:16:59,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1944 [2020-10-28 12:16:59,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:16:59,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:16:59,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:16:59,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-28 12:16:59,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-28 12:16:59,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:17:00,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:17:00,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:17:00,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:17:00,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:17:00,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:17:00,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:17:00,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 12:17:00,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:17:00,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:17:00,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:17:00,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:17:00,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:17:00,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:17:00,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:17:00,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:17:00,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:17:00,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:17:00,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-28 12:17:00,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:17:00,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-10-28 12:17:00,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:17:00,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:17:00,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:17:00,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:17:00,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-28 12:17:00,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:17:00,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-28 12:17:00,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:17:00,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:17:00,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:17:00,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-28 12:17:00,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:17:00,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-28 12:17:00,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:17:00,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:17:00,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:17:00,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:17:00,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-28 12:17:00,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:17:00,824 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 139 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:17:00,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1458930310] [2020-10-28 12:17:00,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:17:00,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:17:00,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101882194] [2020-10-28 12:17:00,826 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:17:00,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:17:00,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:17:00,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:17:00,827 INFO L87 Difference]: Start difference. First operand 65249 states and 85070 transitions. Second operand 7 states. [2020-10-28 12:17:20,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:17:20,752 INFO L93 Difference]: Finished difference Result 147712 states and 203896 transitions. [2020-10-28 12:17:20,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:17:20,754 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 273 [2020-10-28 12:17:20,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:17:21,245 INFO L225 Difference]: With dead ends: 147712 [2020-10-28 12:17:21,246 INFO L226 Difference]: Without dead ends: 82469 [2020-10-28 12:17:21,317 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:17:21,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82469 states. [2020-10-28 12:17:23,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82469 to 81373. [2020-10-28 12:17:23,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81373 states. [2020-10-28 12:17:23,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81373 states to 81373 states and 107246 transitions. [2020-10-28 12:17:23,712 INFO L78 Accepts]: Start accepts. Automaton has 81373 states and 107246 transitions. Word has length 273 [2020-10-28 12:17:23,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:17:23,712 INFO L481 AbstractCegarLoop]: Abstraction has 81373 states and 107246 transitions. [2020-10-28 12:17:23,713 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:17:23,713 INFO L276 IsEmpty]: Start isEmpty. Operand 81373 states and 107246 transitions. [2020-10-28 12:17:23,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2020-10-28 12:17:23,719 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:17:23,720 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:17:23,720 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 12:17:23,720 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:17:23,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:17:23,721 INFO L82 PathProgramCache]: Analyzing trace with hash -358199588, now seen corresponding path program 1 times [2020-10-28 12:17:23,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:17:23,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1735264207] [2020-10-28 12:17:23,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:17:24,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:17:24,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:17:24,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:17:24,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 318 [2020-10-28 12:17:24,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:17:24,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 719 [2020-10-28 12:17:24,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:17:24,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:17:24,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:17:24,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 282 [2020-10-28 12:17:24,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 12:17:24,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:17:24,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:17:24,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:17:24,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:17:24,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:17:24,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:17:24,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:17:24,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:17:24,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:17:24,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:17:24,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:17:25,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:17:25,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:17:25,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:17:25,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:17:25,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:17:25,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:17:25,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:17:25,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-28 12:17:25,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:17:25,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-28 12:17:25,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:17:25,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:17:25,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:17:25,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:17:25,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:17:25,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:17:25,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-28 12:17:25,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:17:25,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:17:25,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:17:25,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-28 12:17:25,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:17:25,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-28 12:17:25,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:17:25,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:17:25,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:17:25,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:17:25,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-28 12:17:25,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:17:25,447 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 53 proven. 2 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2020-10-28 12:17:25,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1735264207] [2020-10-28 12:17:25,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:17:25,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:17:25,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745344990] [2020-10-28 12:17:25,450 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:17:25,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:17:25,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:17:25,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:17:25,456 INFO L87 Difference]: Start difference. First operand 81373 states and 107246 transitions. Second operand 5 states. [2020-10-28 12:17:43,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:17:43,569 INFO L93 Difference]: Finished difference Result 183579 states and 244929 transitions. [2020-10-28 12:17:43,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:17:43,571 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 304 [2020-10-28 12:17:43,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:17:44,018 INFO L225 Difference]: With dead ends: 183579 [2020-10-28 12:17:44,018 INFO L226 Difference]: Without dead ends: 102212 [2020-10-28 12:17:44,310 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:17:44,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102212 states. [2020-10-28 12:17:46,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102212 to 97549. [2020-10-28 12:17:46,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97549 states. [2020-10-28 12:17:47,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97549 states to 97549 states and 118766 transitions. [2020-10-28 12:17:47,341 INFO L78 Accepts]: Start accepts. Automaton has 97549 states and 118766 transitions. Word has length 304 [2020-10-28 12:17:47,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:17:47,341 INFO L481 AbstractCegarLoop]: Abstraction has 97549 states and 118766 transitions. [2020-10-28 12:17:47,342 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:17:47,342 INFO L276 IsEmpty]: Start isEmpty. Operand 97549 states and 118766 transitions. [2020-10-28 12:17:47,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2020-10-28 12:17:47,365 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:17:47,365 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:17:47,365 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 12:17:47,365 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:17:47,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:17:47,366 INFO L82 PathProgramCache]: Analyzing trace with hash 2067793598, now seen corresponding path program 1 times [2020-10-28 12:17:47,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:17:47,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1906890232] [2020-10-28 12:17:47,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:17:47,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:17:47,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:17:48,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:17:48,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 333 [2020-10-28 12:17:48,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:17:48,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 713 [2020-10-28 12:17:48,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:17:48,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:17:48,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:17:48,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 297 [2020-10-28 12:17:48,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 12:17:48,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:17:48,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:17:48,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:17:48,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:17:48,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:17:48,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:17:48,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:17:48,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 12:17:48,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:17:48,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:17:48,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:17:48,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:17:48,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:17:48,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:17:48,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:17:48,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:17:48,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:17:48,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:17:48,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-28 12:17:48,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:17:48,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-28 12:17:48,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:17:48,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:17:48,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:17:48,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:17:48,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:17:48,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:17:48,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-28 12:17:48,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:17:48,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:17:48,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:17:48,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-28 12:17:48,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:17:48,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-28 12:17:48,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:17:48,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:17:48,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:17:48,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:17:48,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-28 12:17:48,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:17:48,935 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 53 proven. 2 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2020-10-28 12:17:48,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1906890232] [2020-10-28 12:17:48,937 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:17:48,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:17:48,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74418476] [2020-10-28 12:17:48,938 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:17:48,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:17:48,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:17:48,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:17:48,939 INFO L87 Difference]: Start difference. First operand 97549 states and 118766 transitions. Second operand 5 states. [2020-10-28 12:18:05,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:18:05,089 INFO L93 Difference]: Finished difference Result 195123 states and 237836 transitions. [2020-10-28 12:18:05,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:18:05,090 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 319 [2020-10-28 12:18:05,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:18:05,329 INFO L225 Difference]: With dead ends: 195123 [2020-10-28 12:18:05,329 INFO L226 Difference]: Without dead ends: 97580 [2020-10-28 12:18:05,601 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:18:05,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97580 states. [2020-10-28 12:18:07,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97580 to 97518. [2020-10-28 12:18:07,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97518 states. [2020-10-28 12:18:07,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97518 states to 97518 states and 113081 transitions. [2020-10-28 12:18:07,635 INFO L78 Accepts]: Start accepts. Automaton has 97518 states and 113081 transitions. Word has length 319 [2020-10-28 12:18:07,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:18:07,636 INFO L481 AbstractCegarLoop]: Abstraction has 97518 states and 113081 transitions. [2020-10-28 12:18:07,636 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:18:07,636 INFO L276 IsEmpty]: Start isEmpty. Operand 97518 states and 113081 transitions. [2020-10-28 12:18:07,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2020-10-28 12:18:07,641 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:18:07,641 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:18:07,642 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 12:18:07,642 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:18:07,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:18:07,642 INFO L82 PathProgramCache]: Analyzing trace with hash -1276319986, now seen corresponding path program 1 times [2020-10-28 12:18:07,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:18:07,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [896995044] [2020-10-28 12:18:07,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:18:07,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:18:07,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:08,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:11,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:18:11,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 393 [2020-10-28 12:18:11,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:18:11,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3927 [2020-10-28 12:18:11,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:18:11,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:18:11,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:18:11,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 357 [2020-10-28 12:18:11,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 12:18:11,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:18:11,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:18:11,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:18:11,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:11,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:18:11,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:18:11,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:18:11,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:18:11,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:18:11,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:18:11,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:18:11,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:18:11,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:18:11,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:18:11,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:18:11,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:18:11,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:11,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:18:11,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-28 12:18:11,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:18:11,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 12:18:11,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:18:11,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:18:11,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:18:11,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:18:11,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:18:11,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:18:11,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-28 12:18:11,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:18:11,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:12,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:18:12,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-28 12:18:12,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:18:12,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 12:18:12,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:18:12,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:18:12,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:18:12,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:18:12,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:18:12,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:18:12,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2020-10-28 12:18:12,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:18:12,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:12,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:18:12,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 12:18:12,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:18:12,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-28 12:18:12,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:18:12,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:18:12,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:18:12,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:18:12,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-28 12:18:12,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:18:12,293 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 81 proven. 3 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2020-10-28 12:18:12,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [896995044] [2020-10-28 12:18:12,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:18:12,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:18:12,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114919804] [2020-10-28 12:18:12,295 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:18:12,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:18:12,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:18:12,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:18:12,296 INFO L87 Difference]: Start difference. First operand 97518 states and 113081 transitions. Second operand 5 states. [2020-10-28 12:18:12,443 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 66