/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label16.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 07:13:19,186 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 07:13:19,190 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 07:13:19,245 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 07:13:19,246 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 07:13:19,252 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 07:13:19,254 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 07:13:19,258 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 07:13:19,261 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 07:13:19,269 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 07:13:19,271 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 07:13:19,272 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 07:13:19,272 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 07:13:19,276 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 07:13:19,278 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 07:13:19,280 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 07:13:19,281 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 07:13:19,285 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 07:13:19,293 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 07:13:19,300 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 07:13:19,304 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 07:13:19,305 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 07:13:19,307 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 07:13:19,309 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 07:13:19,317 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 07:13:19,318 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 07:13:19,318 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 07:13:19,320 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 07:13:19,321 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 07:13:19,322 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 07:13:19,322 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 07:13:19,323 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 07:13:19,325 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 07:13:19,326 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 07:13:19,327 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 07:13:19,345 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 07:13:19,346 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 07:13:19,347 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 07:13:19,347 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 07:13:19,348 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 07:13:19,349 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 07:13:19,357 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 07:13:19,405 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 07:13:19,405 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 07:13:19,410 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 07:13:19,410 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 07:13:19,410 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 07:13:19,410 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 07:13:19,411 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 07:13:19,411 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 07:13:19,411 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 07:13:19,411 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 07:13:19,412 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 07:13:19,413 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 07:13:19,413 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 07:13:19,413 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 07:13:19,413 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 07:13:19,413 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 07:13:19,414 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 07:13:19,414 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 07:13:19,414 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 07:13:19,414 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 07:13:19,414 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 07:13:19,415 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:13:19,415 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 07:13:19,415 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 07:13:19,415 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 07:13:19,416 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 07:13:19,416 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 07:13:19,416 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 07:13:19,416 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 07:13:19,417 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 07:13:19,841 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 07:13:19,866 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 07:13:19,869 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 07:13:19,871 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 07:13:19,872 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 07:13:19,873 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label16.c [2020-10-29 07:13:19,951 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ef12550f7/42eae5a4bb8a48dc8ae64d0d3c02bd63/FLAGdd8166556 [2020-10-29 07:13:21,092 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 07:13:21,093 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label16.c [2020-10-29 07:13:21,139 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ef12550f7/42eae5a4bb8a48dc8ae64d0d3c02bd63/FLAGdd8166556 [2020-10-29 07:13:21,460 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ef12550f7/42eae5a4bb8a48dc8ae64d0d3c02bd63 [2020-10-29 07:13:21,463 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 07:13:21,469 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 07:13:21,471 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 07:13:21,471 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 07:13:21,475 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 07:13:21,475 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:13:21" (1/1) ... [2020-10-29 07:13:21,479 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7db2333e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:13:21, skipping insertion in model container [2020-10-29 07:13:21,479 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:13:21" (1/1) ... [2020-10-29 07:13:21,487 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 07:13:21,646 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 07:13:23,456 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:13:23,472 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 07:13:24,228 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:13:24,269 INFO L208 MainTranslator]: Completed translation [2020-10-29 07:13:24,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:13:24 WrapperNode [2020-10-29 07:13:24,271 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 07:13:24,272 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 07:13:24,272 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 07:13:24,272 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 07:13:24,285 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:13:24" (1/1) ... [2020-10-29 07:13:24,285 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:13:24" (1/1) ... [2020-10-29 07:13:24,387 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:13:24" (1/1) ... [2020-10-29 07:13:24,388 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:13:24" (1/1) ... [2020-10-29 07:13:24,625 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:13:24" (1/1) ... [2020-10-29 07:13:24,665 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:13:24" (1/1) ... [2020-10-29 07:13:24,706 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:13:24" (1/1) ... [2020-10-29 07:13:24,746 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 07:13:24,748 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 07:13:24,748 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 07:13:24,749 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 07:13:24,750 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:13:24" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:13:24,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 07:13:24,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 07:13:24,831 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 07:13:24,832 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 07:13:24,832 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 07:13:24,832 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 07:13:24,832 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 07:13:24,833 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 07:13:24,833 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 07:13:24,833 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 07:13:24,834 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 07:13:24,834 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 07:13:24,834 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 07:13:24,834 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 07:13:24,835 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 07:13:24,835 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 07:13:24,836 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 07:13:24,928 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 07:13:24,928 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 07:13:24,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 07:13:24,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 07:13:24,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 07:13:24,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 07:13:24,929 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 07:13:24,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 07:13:34,774 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 07:13:34,775 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 07:13:34,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:13:34 BoogieIcfgContainer [2020-10-29 07:13:34,779 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 07:13:34,781 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 07:13:34,782 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 07:13:34,785 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 07:13:34,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 07:13:21" (1/3) ... [2020-10-29 07:13:34,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d9749ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:13:34, skipping insertion in model container [2020-10-29 07:13:34,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:13:24" (2/3) ... [2020-10-29 07:13:34,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d9749ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:13:34, skipping insertion in model container [2020-10-29 07:13:34,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:13:34" (3/3) ... [2020-10-29 07:13:34,789 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem13_label16.c [2020-10-29 07:13:34,802 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 07:13:34,810 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 07:13:34,823 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 07:13:34,858 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 07:13:34,859 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 07:13:34,859 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 07:13:34,859 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 07:13:34,859 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 07:13:34,859 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 07:13:34,860 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 07:13:34,860 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 07:13:34,900 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states. [2020-10-29 07:13:34,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-29 07:13:34,909 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:13:34,910 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] [2020-10-29 07:13:34,910 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:13:34,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:13:34,923 INFO L82 PathProgramCache]: Analyzing trace with hash -1797343030, now seen corresponding path program 1 times [2020-10-29 07:13:34,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:13:34,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1051589853] [2020-10-29 07:13:34,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:13:35,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:13:35,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:13:35,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:13:35,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 07:13:35,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:13:35,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 523 [2020-10-29 07:13:35,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:13:35,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:13:35,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:13:35,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:13:35,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 07:13:35,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 07:13:35,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:13:35,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:13:35,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:13:35,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:13:35,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:13:35,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:13:35,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 07:13:35,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:13:35,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:13:35,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:13:35,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:13:35,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:13:35,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:13:35,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:13:35,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1051589853] [2020-10-29 07:13:35,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:13:35,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 07:13:35,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249918809] [2020-10-29 07:13:35,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 07:13:35,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:13:35,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 07:13:35,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 07:13:35,903 INFO L87 Difference]: Start difference. First operand 1123 states. Second operand 4 states. [2020-10-29 07:13:53,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:13:53,048 INFO L93 Difference]: Finished difference Result 3123 states and 5754 transitions. [2020-10-29 07:13:53,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:13:53,050 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-10-29 07:13:53,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:13:53,090 INFO L225 Difference]: With dead ends: 3123 [2020-10-29 07:13:53,091 INFO L226 Difference]: Without dead ends: 1936 [2020-10-29 07:13:53,102 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 [2020-10-29 07:13:53,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1936 states. [2020-10-29 07:13:53,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1936 to 1918. [2020-10-29 07:13:53,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1918 states. [2020-10-29 07:13:53,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1918 states to 1918 states and 2936 transitions. [2020-10-29 07:13:53,291 INFO L78 Accepts]: Start accepts. Automaton has 1918 states and 2936 transitions. Word has length 29 [2020-10-29 07:13:53,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:13:53,292 INFO L481 AbstractCegarLoop]: Abstraction has 1918 states and 2936 transitions. [2020-10-29 07:13:53,293 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 07:13:53,293 INFO L276 IsEmpty]: Start isEmpty. Operand 1918 states and 2936 transitions. [2020-10-29 07:13:53,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-29 07:13:53,302 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:13:53,303 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:13:53,303 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 07:13:53,304 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:13:53,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:13:53,305 INFO L82 PathProgramCache]: Analyzing trace with hash -390492016, now seen corresponding path program 1 times [2020-10-29 07:13:53,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:13:53,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1978220025] [2020-10-29 07:13:53,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:13:53,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:13:53,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:13:53,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:13:54,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:13:55,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:13:55,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 07:13:55,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:13:55,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1794 [2020-10-29 07:13:55,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:13:55,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:13:55,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:13:55,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:13:55,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 07:13:55,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-29 07:13:55,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:13:55,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:13:55,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:13:55,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:13:55,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:13:55,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:13:55,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 07:13:55,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:13:55,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:13:55,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:13:55,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:13:55,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:13:55,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-29 07:13:55,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:13:55,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:13:55,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:13:55,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:13:55,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 07:13:55,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:13:55,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-10-29 07:13:55,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:13:55,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:13:55,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:13:55,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:13:55,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 07:13:55,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:13:55,752 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:13:55,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1978220025] [2020-10-29 07:13:55,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:13:55,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:13:55,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424380524] [2020-10-29 07:13:55,756 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:13:55,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:13:55,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:13:55,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:13:55,759 INFO L87 Difference]: Start difference. First operand 1918 states and 2936 transitions. Second operand 7 states. [2020-10-29 07:14:15,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:14:15,742 INFO L93 Difference]: Finished difference Result 5717 states and 8808 transitions. [2020-10-29 07:14:15,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:14:15,744 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 105 [2020-10-29 07:14:15,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:14:15,769 INFO L225 Difference]: With dead ends: 5717 [2020-10-29 07:14:15,769 INFO L226 Difference]: Without dead ends: 3805 [2020-10-29 07:14:15,775 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:14:15,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3805 states. [2020-10-29 07:14:15,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3805 to 3731. [2020-10-29 07:14:15,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3731 states. [2020-10-29 07:14:15,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3731 states to 3731 states and 5301 transitions. [2020-10-29 07:14:15,910 INFO L78 Accepts]: Start accepts. Automaton has 3731 states and 5301 transitions. Word has length 105 [2020-10-29 07:14:15,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:14:15,910 INFO L481 AbstractCegarLoop]: Abstraction has 3731 states and 5301 transitions. [2020-10-29 07:14:15,910 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:14:15,910 INFO L276 IsEmpty]: Start isEmpty. Operand 3731 states and 5301 transitions. [2020-10-29 07:14:15,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-29 07:14:15,922 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:14:15,922 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:14:15,922 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 07:14:15,923 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:14:15,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:14:15,924 INFO L82 PathProgramCache]: Analyzing trace with hash -2023380617, now seen corresponding path program 1 times [2020-10-29 07:14:15,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:14:15,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2049112048] [2020-10-29 07:14:15,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:14:15,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:14:16,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:14:16,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:14:16,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:14:16,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:14:17,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:14:17,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-29 07:14:17,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:14:17,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1892 [2020-10-29 07:14:17,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:14:17,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:14:17,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:14:17,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:14:17,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-29 07:14:17,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:14:17,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:14:17,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:14:17,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:14:18,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:14:18,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:14:18,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:14:18,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 07:14:18,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:14:18,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:14:18,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:14:18,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:14:18,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:14:18,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:14:18,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:14:18,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:14:18,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:14:18,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:14:18,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-29 07:14:18,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:14:18,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-10-29 07:14:18,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:14:18,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:14:18,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:14:18,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:14:18,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-29 07:14:18,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:14:18,441 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:14:18,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2049112048] [2020-10-29 07:14:18,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:14:18,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:14:18,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98347658] [2020-10-29 07:14:18,443 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:14:18,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:14:18,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:14:18,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:14:18,444 INFO L87 Difference]: Start difference. First operand 3731 states and 5301 transitions. Second operand 7 states. [2020-10-29 07:14:47,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:14:47,159 INFO L93 Difference]: Finished difference Result 11174 states and 16282 transitions. [2020-10-29 07:14:47,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:14:47,161 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 147 [2020-10-29 07:14:47,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:14:47,202 INFO L225 Difference]: With dead ends: 11174 [2020-10-29 07:14:47,203 INFO L226 Difference]: Without dead ends: 7449 [2020-10-29 07:14:47,215 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:14:47,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7449 states. [2020-10-29 07:14:47,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7449 to 7305. [2020-10-29 07:14:47,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7305 states. [2020-10-29 07:14:47,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7305 states to 7305 states and 10218 transitions. [2020-10-29 07:14:47,435 INFO L78 Accepts]: Start accepts. Automaton has 7305 states and 10218 transitions. Word has length 147 [2020-10-29 07:14:47,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:14:47,436 INFO L481 AbstractCegarLoop]: Abstraction has 7305 states and 10218 transitions. [2020-10-29 07:14:47,436 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:14:47,436 INFO L276 IsEmpty]: Start isEmpty. Operand 7305 states and 10218 transitions. [2020-10-29 07:14:47,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-29 07:14:47,440 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:14:47,440 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:14:47,440 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 07:14:47,441 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:14:47,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:14:47,441 INFO L82 PathProgramCache]: Analyzing trace with hash 1036328929, now seen corresponding path program 1 times [2020-10-29 07:14:47,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:14:47,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2085068127] [2020-10-29 07:14:47,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:14:47,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:14:47,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:14:47,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:14:48,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:14:51,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:14:51,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:14:51,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-10-29 07:14:51,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:14:51,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4178 [2020-10-29 07:14:51,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:14:51,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:14:51,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:14:51,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-29 07:14:51,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 07:14:51,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:14:51,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:14:51,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:14:51,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:14:51,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:14:51,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:14:51,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:14:51,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 07:14:51,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:14:51,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:14:51,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:14:51,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:14:51,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:14:51,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:14:51,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:14:51,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:14:51,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:14:51,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:14:51,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-29 07:14:51,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:14:51,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-29 07:14:51,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:14:51,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:14:51,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:14:51,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:14:51,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-29 07:14:51,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:14:51,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-29 07:14:52,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:14:52,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:14:52,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:14:52,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 07:14:52,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:14:52,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-29 07:14:52,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:14:52,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:14:52,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:14:52,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:14:52,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 07:14:52,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:14:52,301 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 114 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:14:52,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2085068127] [2020-10-29 07:14:52,302 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:14:52,302 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:14:52,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293892597] [2020-10-29 07:14:52,303 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:14:52,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:14:52,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:14:52,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:14:52,304 INFO L87 Difference]: Start difference. First operand 7305 states and 10218 transitions. Second operand 7 states. [2020-10-29 07:15:22,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:15:22,488 INFO L93 Difference]: Finished difference Result 28233 states and 42683 transitions. [2020-10-29 07:15:22,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:15:22,490 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 194 [2020-10-29 07:15:22,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:15:22,613 INFO L225 Difference]: With dead ends: 28233 [2020-10-29 07:15:22,613 INFO L226 Difference]: Without dead ends: 20934 [2020-10-29 07:15:22,647 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:15:22,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20934 states. [2020-10-29 07:15:23,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20934 to 20876. [2020-10-29 07:15:23,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20876 states. [2020-10-29 07:15:23,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20876 states to 20876 states and 28378 transitions. [2020-10-29 07:15:23,321 INFO L78 Accepts]: Start accepts. Automaton has 20876 states and 28378 transitions. Word has length 194 [2020-10-29 07:15:23,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:15:23,323 INFO L481 AbstractCegarLoop]: Abstraction has 20876 states and 28378 transitions. [2020-10-29 07:15:23,323 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:15:23,323 INFO L276 IsEmpty]: Start isEmpty. Operand 20876 states and 28378 transitions. [2020-10-29 07:15:23,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-10-29 07:15:23,327 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:15:23,327 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:15:23,328 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 07:15:23,328 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:15:23,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:15:23,328 INFO L82 PathProgramCache]: Analyzing trace with hash 1073789222, now seen corresponding path program 1 times [2020-10-29 07:15:23,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:15:23,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [592099914] [2020-10-29 07:15:23,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:15:23,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:15:23,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:15:23,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:15:23,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:15:24,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:15:27,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:15:27,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-10-29 07:15:27,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:15:27,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3979 [2020-10-29 07:15:27,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:15:27,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:15:27,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:15:27,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:15:27,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-29 07:15:27,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:15:27,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:15:27,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:15:27,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:15:27,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:15:27,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:15:27,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:15:27,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 07:15:27,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:15:27,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:15:27,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:15:27,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:15:27,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:15:27,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:15:27,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:15:27,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:15:27,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:15:27,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:15:27,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-29 07:15:27,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:15:27,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-29 07:15:27,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:15:27,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:15:27,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:15:27,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:15:27,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-29 07:15:27,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:15:27,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-29 07:15:27,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:15:27,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:15:27,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:15:27,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 07:15:27,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:15:27,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-29 07:15:27,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:15:27,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:15:27,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:15:27,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:15:27,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 07:15:27,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:15:28,034 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 43 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-29 07:15:28,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [592099914] [2020-10-29 07:15:28,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:15:28,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 07:15:28,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594037250] [2020-10-29 07:15:28,036 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:15:28,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:15:28,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:15:28,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:15:28,037 INFO L87 Difference]: Start difference. First operand 20876 states and 28378 transitions. Second operand 7 states. [2020-10-29 07:15:58,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:15:58,649 INFO L93 Difference]: Finished difference Result 58799 states and 83492 transitions. [2020-10-29 07:15:58,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:15:58,651 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 197 [2020-10-29 07:15:58,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:15:58,818 INFO L225 Difference]: With dead ends: 58799 [2020-10-29 07:15:58,818 INFO L226 Difference]: Without dead ends: 37933 [2020-10-29 07:15:58,903 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:15:58,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37933 states. [2020-10-29 07:15:59,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37933 to 37827. [2020-10-29 07:15:59,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37827 states. [2020-10-29 07:15:59,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37827 states to 37827 states and 50477 transitions. [2020-10-29 07:15:59,916 INFO L78 Accepts]: Start accepts. Automaton has 37827 states and 50477 transitions. Word has length 197 [2020-10-29 07:15:59,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:15:59,917 INFO L481 AbstractCegarLoop]: Abstraction has 37827 states and 50477 transitions. [2020-10-29 07:15:59,917 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:15:59,917 INFO L276 IsEmpty]: Start isEmpty. Operand 37827 states and 50477 transitions. [2020-10-29 07:15:59,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-10-29 07:15:59,923 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:15:59,923 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:15:59,923 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 07:15:59,923 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:15:59,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:15:59,924 INFO L82 PathProgramCache]: Analyzing trace with hash 703468155, now seen corresponding path program 1 times [2020-10-29 07:15:59,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:15:59,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2125199545] [2020-10-29 07:15:59,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:16:00,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:16:00,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:16:00,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:16:01,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:16:01,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:16:02,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:16:02,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-10-29 07:16:02,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:16:02,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2499 [2020-10-29 07:16:02,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:16:02,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:16:02,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 07:16:02,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:16:02,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 256 [2020-10-29 07:16:02,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:16:02,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:16:02,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:16:02,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:16:02,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:16:02,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:16:02,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:16:02,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 07:16:02,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:16:02,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:16:02,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:16:02,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:16:02,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:16:02,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:16:02,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:16:02,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:16:02,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:16:03,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:16:03,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:16:03,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 07:16:03,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:16:03,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 290 [2020-10-29 07:16:03,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:16:03,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:16:03,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:16:03,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:16:03,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-29 07:16:03,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:16:03,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-29 07:16:03,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:16:03,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:16:03,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:16:03,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:16:03,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-29 07:16:03,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:16:03,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 273 [2020-10-29 07:16:03,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:16:03,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:16:03,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:16:03,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:16:03,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 07:16:03,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:16:03,657 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 34 proven. 11 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-29 07:16:03,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2125199545] [2020-10-29 07:16:03,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:16:03,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:16:03,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664671789] [2020-10-29 07:16:03,661 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:16:03,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:16:03,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:16:03,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:16:03,663 INFO L87 Difference]: Start difference. First operand 37827 states and 50477 transitions. Second operand 7 states. [2020-10-29 07:16:03,892 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-29 07:16:04,604 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 07:16:06,568 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-10-29 07:16:07,338 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-10-29 07:16:55,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:16:55,108 INFO L93 Difference]: Finished difference Result 93783 states and 133522 transitions. [2020-10-29 07:16:55,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 07:16:55,111 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 251 [2020-10-29 07:16:55,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:16:55,410 INFO L225 Difference]: With dead ends: 93783 [2020-10-29 07:16:55,410 INFO L226 Difference]: Without dead ends: 62487 [2020-10-29 07:16:55,724 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-10-29 07:16:55,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62487 states. [2020-10-29 07:16:57,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62487 to 53522. [2020-10-29 07:16:57,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53522 states. [2020-10-29 07:16:57,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53522 states to 53522 states and 74606 transitions. [2020-10-29 07:16:57,633 INFO L78 Accepts]: Start accepts. Automaton has 53522 states and 74606 transitions. Word has length 251 [2020-10-29 07:16:57,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:16:57,634 INFO L481 AbstractCegarLoop]: Abstraction has 53522 states and 74606 transitions. [2020-10-29 07:16:57,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:16:57,634 INFO L276 IsEmpty]: Start isEmpty. Operand 53522 states and 74606 transitions. [2020-10-29 07:16:57,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2020-10-29 07:16:57,642 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:16:57,642 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2020-10-29 07:16:57,643 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 07:16:57,643 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:16:57,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:16:57,644 INFO L82 PathProgramCache]: Analyzing trace with hash -996951886, now seen corresponding path program 1 times [2020-10-29 07:16:57,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:16:57,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1499474605] [2020-10-29 07:16:57,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:16:57,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:16:57,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:16:58,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:16:59,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:17:01,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:17:02,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:17:02,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:17:02,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-29 07:17:02,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 07:17:02,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-29 07:17:02,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:17:02,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:17:02,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:17:02,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-29 07:17:02,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 184 [2020-10-29 07:17:02,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:17:03,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:17:03,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:17:03,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:17:03,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:17:03,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:17:03,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:17:03,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:17:03,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:17:03,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:17:03,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:17:03,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:17:03,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:17:03,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:17:03,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:17:03,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:17:03,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:17:03,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:17:03,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-29 07:17:03,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:17:03,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-29 07:17:03,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:17:03,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:17:03,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:17:03,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:17:03,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 07:17:03,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:17:03,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-29 07:17:03,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:17:03,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:17:03,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:17:03,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:17:03,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 07:17:03,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:17:03,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-29 07:17:03,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:17:03,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:17:03,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:17:03,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:17:03,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 07:17:03,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:17:03,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-10-29 07:17:03,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:17:03,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:17:03,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:17:03,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-29 07:17:03,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:17:03,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-29 07:17:03,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:17:03,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:17:03,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:17:03,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:17:03,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-29 07:17:03,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:17:03,772 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 227 proven. 4 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-10-29 07:17:03,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1499474605] [2020-10-29 07:17:03,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:17:03,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:17:03,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576111369] [2020-10-29 07:17:03,774 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:17:03,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:17:03,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:17:03,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:17:03,775 INFO L87 Difference]: Start difference. First operand 53522 states and 74606 transitions. Second operand 7 states.