/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_label47.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 12:24:35,072 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 12:24:35,077 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 12:24:35,121 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 12:24:35,121 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 12:24:35,123 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 12:24:35,125 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 12:24:35,127 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 12:24:35,130 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 12:24:35,131 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 12:24:35,132 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 12:24:35,134 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 12:24:35,135 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 12:24:35,136 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 12:24:35,138 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 12:24:35,140 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 12:24:35,141 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 12:24:35,142 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 12:24:35,144 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 12:24:35,147 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 12:24:35,150 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 12:24:35,152 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 12:24:35,154 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 12:24:35,155 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 12:24:35,182 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 12:24:35,183 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 12:24:35,185 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 12:24:35,187 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 12:24:35,187 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 12:24:35,190 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 12:24:35,190 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 12:24:35,191 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 12:24:35,193 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 12:24:35,195 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 12:24:35,197 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 12:24:35,197 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 12:24:35,198 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 12:24:35,199 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 12:24:35,199 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 12:24:35,201 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 12:24:35,203 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 12:24:35,204 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 12:24:35,255 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 12:24:35,256 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 12:24:35,257 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 12:24:35,257 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 12:24:35,258 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 12:24:35,258 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 12:24:35,258 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 12:24:35,258 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 12:24:35,259 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 12:24:35,259 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 12:24:35,259 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 12:24:35,259 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 12:24:35,259 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 12:24:35,260 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 12:24:35,260 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 12:24:35,260 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 12:24:35,260 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 12:24:35,260 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 12:24:35,260 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 12:24:35,261 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 12:24:35,261 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 12:24:35,261 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:24:35,261 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 12:24:35,262 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 12:24:35,262 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 12:24:35,262 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 12:24:35,262 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 12:24:35,262 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 12:24:35,262 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 12:24:35,263 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 12:24:35,673 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 12:24:35,718 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 12:24:35,722 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 12:24:35,724 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 12:24:35,725 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 12:24:35,727 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label47.c [2020-10-28 12:24:35,821 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/78a32d8ca/82e3f43fe8de434ba20d43505223094a/FLAGd8ce2eee4 [2020-10-28 12:24:36,867 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 12:24:36,868 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label47.c [2020-10-28 12:24:36,919 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/78a32d8ca/82e3f43fe8de434ba20d43505223094a/FLAGd8ce2eee4 [2020-10-28 12:24:37,299 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/78a32d8ca/82e3f43fe8de434ba20d43505223094a [2020-10-28 12:24:37,306 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 12:24:37,315 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 12:24:37,320 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 12:24:37,320 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 12:24:37,325 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 12:24:37,326 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:24:37" (1/1) ... [2020-10-28 12:24:37,334 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35af5dfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:24:37, skipping insertion in model container [2020-10-28 12:24:37,335 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:24:37" (1/1) ... [2020-10-28 12:24:37,346 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 12:24:37,527 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 12:24:39,071 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:24:39,088 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 12:24:39,804 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:24:39,839 INFO L208 MainTranslator]: Completed translation [2020-10-28 12:24:39,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:24:39 WrapperNode [2020-10-28 12:24:39,841 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 12:24:39,842 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 12:24:39,842 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 12:24:39,842 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 12:24:39,858 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:24:39" (1/1) ... [2020-10-28 12:24:39,860 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:24:39" (1/1) ... [2020-10-28 12:24:39,936 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:24:39" (1/1) ... [2020-10-28 12:24:39,936 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:24:39" (1/1) ... [2020-10-28 12:24:40,104 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:24:39" (1/1) ... [2020-10-28 12:24:40,149 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:24:39" (1/1) ... [2020-10-28 12:24:40,199 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:24:39" (1/1) ... [2020-10-28 12:24:40,252 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 12:24:40,254 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 12:24:40,254 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 12:24:40,254 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 12:24:40,255 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:24:39" (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 12:24:40,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 12:24:40,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 12:24:40,334 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 12:24:40,334 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 12:24:40,334 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 12:24:40,334 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 12:24:40,334 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-28 12:24:40,334 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 12:24:40,335 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 12:24:40,335 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 12:24:40,335 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 12:24:40,335 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-28 12:24:40,335 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 12:24:40,335 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 12:24:40,336 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 12:24:40,336 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 12:24:40,336 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 12:24:40,336 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 12:24:40,336 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 12:24:40,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 12:24:40,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 12:24:40,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 12:24:40,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 12:24:40,337 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 12:24:40,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 12:24:45,454 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 12:24:45,455 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 12:24:45,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:24:45 BoogieIcfgContainer [2020-10-28 12:24:45,459 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 12:24:45,461 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 12:24:45,461 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 12:24:45,465 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 12:24:45,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:24:37" (1/3) ... [2020-10-28 12:24:45,466 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d557e37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:24:45, skipping insertion in model container [2020-10-28 12:24:45,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:24:39" (2/3) ... [2020-10-28 12:24:45,467 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d557e37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:24:45, skipping insertion in model container [2020-10-28 12:24:45,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:24:45" (3/3) ... [2020-10-28 12:24:45,469 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label47.c [2020-10-28 12:24:45,482 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 12:24:45,488 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 12:24:45,502 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 12:24:45,537 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 12:24:45,537 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 12:24:45,537 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 12:24:45,537 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 12:24:45,538 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 12:24:45,538 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 12:24:45,538 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 12:24:45,538 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 12:24:45,580 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states. [2020-10-28 12:24:45,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-28 12:24:45,589 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:24:45,590 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:24:45,591 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:24:45,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:24:45,598 INFO L82 PathProgramCache]: Analyzing trace with hash 244672676, now seen corresponding path program 1 times [2020-10-28 12:24:45,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:24:45,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [402343267] [2020-10-28 12:24:45,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:24:45,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:24:45,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:46,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:24:46,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-28 12:24:46,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:24:46,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 714 [2020-10-28 12:24:46,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:24:46,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:24:46,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:24:46,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:24:46,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-28 12:24:46,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 12:24:46,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:24:46,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:24:46,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:46,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:24:46,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:24:46,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:24:46,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 12:24:46,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:24:46,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:24:46,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:24:46,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:24:46,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:24:46,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:24:46,767 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 12:24:46,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [402343267] [2020-10-28 12:24:46,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:24:46,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 12:24:46,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254748636] [2020-10-28 12:24:46,777 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 12:24:46,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:24:46,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 12:24:46,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 12:24:46,804 INFO L87 Difference]: Start difference. First operand 843 states. Second operand 4 states. [2020-10-28 12:24:56,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:24:56,897 INFO L93 Difference]: Finished difference Result 2476 states and 4742 transitions. [2020-10-28 12:24:56,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:24:56,899 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2020-10-28 12:24:56,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:24:56,977 INFO L225 Difference]: With dead ends: 2476 [2020-10-28 12:24:56,978 INFO L226 Difference]: Without dead ends: 1569 [2020-10-28 12:24:56,992 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:24:57,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2020-10-28 12:24:57,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1554. [2020-10-28 12:24:57,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1554 states. [2020-10-28 12:24:57,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 2726 transitions. [2020-10-28 12:24:57,211 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 2726 transitions. Word has length 45 [2020-10-28 12:24:57,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:24:57,212 INFO L481 AbstractCegarLoop]: Abstraction has 1554 states and 2726 transitions. [2020-10-28 12:24:57,212 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 12:24:57,213 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 2726 transitions. [2020-10-28 12:24:57,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-28 12:24:57,222 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:24:57,222 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:24:57,223 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 12:24:57,224 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:24:57,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:24:57,227 INFO L82 PathProgramCache]: Analyzing trace with hash -92946855, now seen corresponding path program 1 times [2020-10-28 12:24:57,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:24:57,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [297420002] [2020-10-28 12:24:57,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:24:57,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:24:57,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:57,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:58,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:58,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:24:58,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-28 12:24:58,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:24:58,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1304 [2020-10-28 12:24:58,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:24:58,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:24:58,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:24:58,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:24:58,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 12:24:58,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-28 12:24:58,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:24:58,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:24:58,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:58,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:24:58,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:24:58,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:24:58,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 12:24:58,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:24:58,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:24:58,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:24:58,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:24:58,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:24:58,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-28 12:24:58,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:24:58,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:24:58,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:58,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:24:58,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 12:24:58,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:24:58,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-28 12:24:58,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:24:58,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:24:58,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:24:58,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:24:58,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 12:24:58,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:24:59,230 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:24:59,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [297420002] [2020-10-28 12:24:59,231 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:24:59,231 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:24:59,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941945140] [2020-10-28 12:24:59,235 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:24:59,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:24:59,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:24:59,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:24:59,237 INFO L87 Difference]: Start difference. First operand 1554 states and 2726 transitions. Second operand 7 states. [2020-10-28 12:25:13,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:25:13,139 INFO L93 Difference]: Finished difference Result 4776 states and 8449 transitions. [2020-10-28 12:25:13,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:25:13,144 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 114 [2020-10-28 12:25:13,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:25:13,169 INFO L225 Difference]: With dead ends: 4776 [2020-10-28 12:25:13,170 INFO L226 Difference]: Without dead ends: 3228 [2020-10-28 12:25:13,176 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-28 12:25:13,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3228 states. [2020-10-28 12:25:13,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3228 to 3123. [2020-10-28 12:25:13,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3123 states. [2020-10-28 12:25:13,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3123 states to 3123 states and 4707 transitions. [2020-10-28 12:25:13,316 INFO L78 Accepts]: Start accepts. Automaton has 3123 states and 4707 transitions. Word has length 114 [2020-10-28 12:25:13,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:25:13,317 INFO L481 AbstractCegarLoop]: Abstraction has 3123 states and 4707 transitions. [2020-10-28 12:25:13,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:25:13,317 INFO L276 IsEmpty]: Start isEmpty. Operand 3123 states and 4707 transitions. [2020-10-28 12:25:13,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-28 12:25:13,320 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:25:13,320 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:25:13,320 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 12:25:13,321 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:25:13,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:25:13,321 INFO L82 PathProgramCache]: Analyzing trace with hash -817269551, now seen corresponding path program 1 times [2020-10-28 12:25:13,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:25:13,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1341864357] [2020-10-28 12:25:13,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:25:13,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:25:13,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:13,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:14,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:14,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:15,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:25:15,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:25:15,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:25:15,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1744 [2020-10-28 12:25:15,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:25:15,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:25:15,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:25:15,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:25:15,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 12:25:15,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:25:15,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:25:15,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:25:15,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:15,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:25:15,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:25:15,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:25:15,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 12:25:15,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:25:15,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:25:15,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:25:15,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:25:15,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:25:15,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:25:15,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:25:15,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:25:15,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:15,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:25:15,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 12:25:15,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:25:15,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-28 12:25:15,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:25:15,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:25:15,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:25:15,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:25:15,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 12:25:15,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:25:15,466 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:25:15,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1341864357] [2020-10-28 12:25:15,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:25:15,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:25:15,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685570172] [2020-10-28 12:25:15,468 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:25:15,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:25:15,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:25:15,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:25:15,469 INFO L87 Difference]: Start difference. First operand 3123 states and 4707 transitions. Second operand 7 states. [2020-10-28 12:25:29,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:25:29,131 INFO L93 Difference]: Finished difference Result 9611 states and 14748 transitions. [2020-10-28 12:25:29,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:25:29,133 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 115 [2020-10-28 12:25:29,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:25:29,179 INFO L225 Difference]: With dead ends: 9611 [2020-10-28 12:25:29,180 INFO L226 Difference]: Without dead ends: 6494 [2020-10-28 12:25:29,190 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 12:25:29,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6494 states. [2020-10-28 12:25:29,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6494 to 6345. [2020-10-28 12:25:29,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6345 states. [2020-10-28 12:25:29,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6345 states to 6345 states and 8770 transitions. [2020-10-28 12:25:29,467 INFO L78 Accepts]: Start accepts. Automaton has 6345 states and 8770 transitions. Word has length 115 [2020-10-28 12:25:29,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:25:29,470 INFO L481 AbstractCegarLoop]: Abstraction has 6345 states and 8770 transitions. [2020-10-28 12:25:29,470 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:25:29,470 INFO L276 IsEmpty]: Start isEmpty. Operand 6345 states and 8770 transitions. [2020-10-28 12:25:29,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-28 12:25:29,477 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:25:29,477 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:25:29,478 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 12:25:29,482 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:25:29,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:25:29,483 INFO L82 PathProgramCache]: Analyzing trace with hash 980700261, now seen corresponding path program 1 times [2020-10-28 12:25:29,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:25:29,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [7991722] [2020-10-28 12:25:29,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:25:29,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:25:29,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:29,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:29,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:25:29,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:25:29,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:25:29,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 445 [2020-10-28 12:25:29,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:25:29,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:25:29,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:25:29,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-28 12:25:29,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-28 12:25:29,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:25:30,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:25:30,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:25:30,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:30,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:25:30,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:25:30,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:25:30,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:25:30,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:25:30,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:25:30,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:25:30,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:25:30,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:25:30,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:25:30,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:25:30,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:25:30,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:30,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:25:30,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 12:25:30,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:25:30,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-28 12:25:30,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:25:30,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:25:30,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:25:30,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:25:30,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 12:25:30,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 12:25:30,272 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:25:30,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [7991722] [2020-10-28 12:25:30,273 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:25:30,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:25:30,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738453060] [2020-10-28 12:25:30,275 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:25:30,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:25:30,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:25:30,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:25:30,277 INFO L87 Difference]: Start difference. First operand 6345 states and 8770 transitions. Second operand 5 states. [2020-10-28 12:25:43,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:25:43,552 INFO L93 Difference]: Finished difference Result 18230 states and 25956 transitions. [2020-10-28 12:25:43,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:25:43,554 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-10-28 12:25:43,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:25:43,621 INFO L225 Difference]: With dead ends: 18230 [2020-10-28 12:25:43,622 INFO L226 Difference]: Without dead ends: 11891 [2020-10-28 12:25:43,642 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 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 12:25:43,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11891 states. [2020-10-28 12:25:43,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11891 to 11879. [2020-10-28 12:25:43,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11879 states. [2020-10-28 12:25:44,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11879 states to 11879 states and 15040 transitions. [2020-10-28 12:25:44,074 INFO L78 Accepts]: Start accepts. Automaton has 11879 states and 15040 transitions. Word has length 120 [2020-10-28 12:25:44,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:25:44,074 INFO L481 AbstractCegarLoop]: Abstraction has 11879 states and 15040 transitions. [2020-10-28 12:25:44,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:25:44,075 INFO L276 IsEmpty]: Start isEmpty. Operand 11879 states and 15040 transitions. [2020-10-28 12:25:44,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-28 12:25:44,077 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:25:44,078 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:25:44,078 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 12:25:44,078 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:25:44,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:25:44,079 INFO L82 PathProgramCache]: Analyzing trace with hash 925339757, now seen corresponding path program 1 times [2020-10-28 12:25:44,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:25:44,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1392677512] [2020-10-28 12:25:44,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:25:44,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:25:44,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:44,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:45,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:25:45,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-28 12:25:45,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:25:45,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1030 [2020-10-28 12:25:45,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:25:45,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:25:45,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:25:45,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:25:45,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-28 12:25:45,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:25:45,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:25:45,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:25:45,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:45,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:25:45,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:25:45,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:25:45,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 12:25:45,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:25:45,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:25:45,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:25:45,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:25:45,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:25:45,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:25:45,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:25:45,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:25:45,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:45,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:25:45,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-28 12:25:45,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:25:45,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-28 12:25:45,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:25:45,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:25:45,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:25:45,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:25:45,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-28 12:25:45,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:25:45,625 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:25:45,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1392677512] [2020-10-28 12:25:45,626 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:25:45,626 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:25:45,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321681935] [2020-10-28 12:25:45,628 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:25:45,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:25:45,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:25:45,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:25:45,632 INFO L87 Difference]: Start difference. First operand 11879 states and 15040 transitions. Second operand 7 states. [2020-10-28 12:26:01,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:26:01,679 INFO L93 Difference]: Finished difference Result 31433 states and 41205 transitions. [2020-10-28 12:26:01,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:26:01,680 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 124 [2020-10-28 12:26:01,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:26:01,743 INFO L225 Difference]: With dead ends: 31433 [2020-10-28 12:26:01,743 INFO L226 Difference]: Without dead ends: 16427 [2020-10-28 12:26:01,777 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-28 12:26:01,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16427 states. [2020-10-28 12:26:02,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16427 to 16175. [2020-10-28 12:26:02,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16175 states. [2020-10-28 12:26:02,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16175 states to 16175 states and 20713 transitions. [2020-10-28 12:26:02,270 INFO L78 Accepts]: Start accepts. Automaton has 16175 states and 20713 transitions. Word has length 124 [2020-10-28 12:26:02,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:26:02,271 INFO L481 AbstractCegarLoop]: Abstraction has 16175 states and 20713 transitions. [2020-10-28 12:26:02,271 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:26:02,271 INFO L276 IsEmpty]: Start isEmpty. Operand 16175 states and 20713 transitions. [2020-10-28 12:26:02,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2020-10-28 12:26:02,279 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:26:02,279 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:26:02,280 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 12:26:02,280 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:26:02,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:26:02,280 INFO L82 PathProgramCache]: Analyzing trace with hash 958305745, now seen corresponding path program 1 times [2020-10-28 12:26:02,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:26:02,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1585598011] [2020-10-28 12:26:02,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:26:02,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:26:02,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:02,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:03,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:26:03,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-28 12:26:03,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:26:03,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1498 [2020-10-28 12:26:03,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:26:03,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:26:03,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:26:03,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:26:03,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 204 [2020-10-28 12:26:03,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:26:03,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:26:03,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:26:03,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:04,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:26:04,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:26:04,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:26:04,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 12:26:04,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:26:04,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:26:04,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:26:04,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:26:04,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:26:04,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:26:04,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:26:04,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:26:04,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:04,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:26:04,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-28 12:26:04,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:26:04,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 405 [2020-10-28 12:26:04,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:26:04,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:26:04,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:26:04,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:26:04,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 199 [2020-10-28 12:26:04,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:26:04,774 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:26:04,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1585598011] [2020-10-28 12:26:04,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:26:04,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:26:04,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491417675] [2020-10-28 12:26:04,777 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:26:04,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:26:04,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:26:04,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:26:04,778 INFO L87 Difference]: Start difference. First operand 16175 states and 20713 transitions. Second operand 7 states. [2020-10-28 12:26:20,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:26:20,247 INFO L93 Difference]: Finished difference Result 33078 states and 45200 transitions. [2020-10-28 12:26:20,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:26:20,249 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 243 [2020-10-28 12:26:20,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:26:20,316 INFO L225 Difference]: With dead ends: 33078 [2020-10-28 12:26:20,316 INFO L226 Difference]: Without dead ends: 16909 [2020-10-28 12:26:20,354 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:26:20,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16909 states. [2020-10-28 12:26:20,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16909 to 16251. [2020-10-28 12:26:20,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16251 states. [2020-10-28 12:26:20,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16251 states to 16251 states and 20495 transitions. [2020-10-28 12:26:20,826 INFO L78 Accepts]: Start accepts. Automaton has 16251 states and 20495 transitions. Word has length 243 [2020-10-28 12:26:20,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:26:20,827 INFO L481 AbstractCegarLoop]: Abstraction has 16251 states and 20495 transitions. [2020-10-28 12:26:20,827 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:26:20,827 INFO L276 IsEmpty]: Start isEmpty. Operand 16251 states and 20495 transitions. [2020-10-28 12:26:20,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-10-28 12:26:20,833 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:26:20,833 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 12:26:20,834 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 12:26:20,834 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:26:20,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:26:20,835 INFO L82 PathProgramCache]: Analyzing trace with hash 15259860, now seen corresponding path program 1 times [2020-10-28 12:26:20,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:26:20,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2092899672] [2020-10-28 12:26:20,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:26:20,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:26:20,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:21,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:21,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:22,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:24,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:26:24,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 293 [2020-10-28 12:26:24,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:26:24,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3517 [2020-10-28 12:26:24,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:26:24,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:26:24,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:26:24,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-28 12:26:24,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-28 12:26:24,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:26:24,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:26:24,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:26:24,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:24,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:26:24,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:26:24,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:26:24,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 12:26:24,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:26:24,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:26:24,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:26:24,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:26:24,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:26:24,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:26:24,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:26:24,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:26:24,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:24,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:26:24,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-28 12:26:24,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:26:24,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-28 12:26:24,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:26:24,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:26:24,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:26:24,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:26:24,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-28 12:26:24,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:26:24,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-28 12:26:24,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:26:24,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:25,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:25,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:26:25,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 12:26:25,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:26:25,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-28 12:26:25,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:26:25,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:26:25,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:26:25,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:26:25,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-28 12:26:25,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:26:25,400 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 121 proven. 37 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 12:26:25,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2092899672] [2020-10-28 12:26:25,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:26:25,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 12:26:25,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561202908] [2020-10-28 12:26:25,403 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:26:25,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:26:25,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:26:25,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:26:25,406 INFO L87 Difference]: Start difference. First operand 16251 states and 20495 transitions. Second operand 8 states. [2020-10-28 12:26:50,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:26:50,933 INFO L93 Difference]: Finished difference Result 40432 states and 52747 transitions. [2020-10-28 12:26:50,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 12:26:50,935 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 279 [2020-10-28 12:26:50,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:26:51,024 INFO L225 Difference]: With dead ends: 40432 [2020-10-28 12:26:51,024 INFO L226 Difference]: Without dead ends: 24954 [2020-10-28 12:26:51,049 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-28 12:26:51,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24954 states. [2020-10-28 12:26:51,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24954 to 24062. [2020-10-28 12:26:51,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24062 states. [2020-10-28 12:26:51,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24062 states to 24062 states and 30909 transitions. [2020-10-28 12:26:51,615 INFO L78 Accepts]: Start accepts. Automaton has 24062 states and 30909 transitions. Word has length 279 [2020-10-28 12:26:51,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:26:51,616 INFO L481 AbstractCegarLoop]: Abstraction has 24062 states and 30909 transitions. [2020-10-28 12:26:51,616 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:26:51,616 INFO L276 IsEmpty]: Start isEmpty. Operand 24062 states and 30909 transitions. [2020-10-28 12:26:51,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2020-10-28 12:26:51,622 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:26:51,622 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 12:26:51,624 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 12:26:51,624 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:26:51,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:26:51,624 INFO L82 PathProgramCache]: Analyzing trace with hash 968560076, now seen corresponding path program 1 times [2020-10-28 12:26:51,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:26:51,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1195442578] [2020-10-28 12:26:51,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:26:51,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:26:51,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:51,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:52,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:53,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:54,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:26:54,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 297 [2020-10-28 12:26:54,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:26:54,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3081 [2020-10-28 12:26:54,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:26:54,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:26:54,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:26:54,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-28 12:26:54,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-28 12:26:54,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:26:55,005 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 12:26:55,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:26:55,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:26:55,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:55,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:26:55,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:26:55,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:26:55,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:26:55,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:26:55,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:26:55,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:26:55,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:26:55,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:26:55,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:26:55,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:26:55,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:26:55,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:55,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:26:55,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-28 12:26:55,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:26:55,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-28 12:26:55,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:26:55,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:26:55,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:26:55,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:26:55,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-28 12:26:55,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:26:55,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-28 12:26:55,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:26:55,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:55,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:55,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:26:55,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 12:26:55,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:26:55,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-10-28 12:26:55,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:26:55,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:26:55,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:26:55,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:26:55,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-28 12:26:55,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:26:55,673 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 121 proven. 37 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 12:26:55,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1195442578] [2020-10-28 12:26:55,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:26:55,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:26:55,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701421391] [2020-10-28 12:26:55,675 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:26:55,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:26:55,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:26:55,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:26:55,676 INFO L87 Difference]: Start difference. First operand 24062 states and 30909 transitions. Second operand 7 states. [2020-10-28 12:27:15,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:27:15,603 INFO L93 Difference]: Finished difference Result 69126 states and 99589 transitions. [2020-10-28 12:27:15,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:27:15,605 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 283 [2020-10-28 12:27:15,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:27:15,796 INFO L225 Difference]: With dead ends: 69126 [2020-10-28 12:27:15,796 INFO L226 Difference]: Without dead ends: 45837 [2020-10-28 12:27:15,851 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:27:15,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45837 states. [2020-10-28 12:27:17,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45837 to 45099. [2020-10-28 12:27:17,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45099 states. [2020-10-28 12:27:17,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45099 states to 45099 states and 56015 transitions. [2020-10-28 12:27:17,622 INFO L78 Accepts]: Start accepts. Automaton has 45099 states and 56015 transitions. Word has length 283 [2020-10-28 12:27:17,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:27:17,624 INFO L481 AbstractCegarLoop]: Abstraction has 45099 states and 56015 transitions. [2020-10-28 12:27:17,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:27:17,625 INFO L276 IsEmpty]: Start isEmpty. Operand 45099 states and 56015 transitions. [2020-10-28 12:27:17,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2020-10-28 12:27:17,634 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:27:17,635 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:27:17,635 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 12:27:17,635 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:27:17,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:27:17,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1751630892, now seen corresponding path program 1 times [2020-10-28 12:27:17,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:27:17,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [700908004] [2020-10-28 12:27:17,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:27:17,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:27:17,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:18,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:18,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:19,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:22,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:27:22,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 370 [2020-10-28 12:27:22,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:27:22,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-28 12:27:22,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:27:22,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:27:22,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:27:22,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-10-28 12:27:22,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 208 [2020-10-28 12:27:22,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:27:23,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:27:23,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:27:23,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:23,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:27:23,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:27:23,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:27:23,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:27:23,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:27:23,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:27:23,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:27:23,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:27:23,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:27:23,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:27:23,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:27:23,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:27:23,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:23,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:27:23,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-28 12:27:23,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:27:23,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-28 12:27:23,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:27:23,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:27:23,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:27:23,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:27:23,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-28 12:27:23,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:27:23,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-28 12:27:23,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:27:23,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:23,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:23,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:27:23,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-28 12:27:23,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:27:23,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 419 [2020-10-28 12:27:23,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:27:23,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:27:23,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:27:23,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:27:23,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-28 12:27:23,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:27:24,054 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 72 proven. 2 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2020-10-28 12:27:24,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [700908004] [2020-10-28 12:27:24,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:27:24,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:27:24,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100051875] [2020-10-28 12:27:24,062 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:27:24,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:27:24,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:27:24,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:27:24,065 INFO L87 Difference]: Start difference. First operand 45099 states and 56015 transitions. Second operand 5 states. [2020-10-28 12:27:40,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:27:40,809 INFO L93 Difference]: Finished difference Result 104997 states and 136232 transitions. [2020-10-28 12:27:40,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:27:40,812 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 356 [2020-10-28 12:27:40,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:27:40,999 INFO L225 Difference]: With dead ends: 104997 [2020-10-28 12:27:41,000 INFO L226 Difference]: Without dead ends: 60671 [2020-10-28 12:27:41,074 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 12:27:41,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60671 states. [2020-10-28 12:27:42,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60671 to 60635. [2020-10-28 12:27:42,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60635 states. [2020-10-28 12:27:42,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60635 states to 60635 states and 75310 transitions. [2020-10-28 12:27:42,917 INFO L78 Accepts]: Start accepts. Automaton has 60635 states and 75310 transitions. Word has length 356 [2020-10-28 12:27:42,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:27:42,919 INFO L481 AbstractCegarLoop]: Abstraction has 60635 states and 75310 transitions. [2020-10-28 12:27:42,919 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:27:42,919 INFO L276 IsEmpty]: Start isEmpty. Operand 60635 states and 75310 transitions. [2020-10-28 12:27:42,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2020-10-28 12:27:42,933 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:27:42,933 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:27:42,933 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 12:27:42,934 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:27:42,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:27:42,935 INFO L82 PathProgramCache]: Analyzing trace with hash -1490014646, now seen corresponding path program 1 times [2020-10-28 12:27:42,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:27:42,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1572423185] [2020-10-28 12:27:42,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:27:43,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:27:43,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:43,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:43,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:47,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:48,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:27:48,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 397 [2020-10-28 12:27:48,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:27:48,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 12:27:48,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:27:48,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:27:48,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:27:48,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-10-28 12:27:48,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 193 [2020-10-28 12:27:48,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:27:48,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:27:48,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:27:48,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:48,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:27:48,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:27:48,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:27:48,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:27:48,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:27:48,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:27:48,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:27:48,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:27:48,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:27:48,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:27:48,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:27:48,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:27:48,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:48,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:27:48,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-28 12:27:48,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:27:48,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-28 12:27:48,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:27:48,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:27:48,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:27:48,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:27:48,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-28 12:27:48,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:27:48,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-28 12:27:48,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:27:48,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:48,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:27:48,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-28 12:27:48,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:27:48,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 389 [2020-10-28 12:27:48,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:27:48,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:27:48,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:27:48,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:27:48,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 191 [2020-10-28 12:27:48,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:27:49,236 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 219 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:27:49,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1572423185] [2020-10-28 12:27:49,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:27:49,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:27:49,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499931752] [2020-10-28 12:27:49,238 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:27:49,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:27:49,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:27:49,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:27:49,239 INFO L87 Difference]: Start difference. First operand 60635 states and 75310 transitions. Second operand 7 states. [2020-10-28 12:28:13,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:28:13,111 INFO L93 Difference]: Finished difference Result 146397 states and 201612 transitions. [2020-10-28 12:28:13,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:28:13,114 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 383 [2020-10-28 12:28:13,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:28:13,636 INFO L225 Difference]: With dead ends: 146397 [2020-10-28 12:28:13,636 INFO L226 Difference]: Without dead ends: 86535 [2020-10-28 12:28:13,706 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:28:13,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86535 states.