/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_label24.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 12:18:18,167 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 12:18:18,170 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 12:18:18,220 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 12:18:18,221 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 12:18:18,227 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 12:18:18,229 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 12:18:18,233 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 12:18:18,236 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 12:18:18,242 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 12:18:18,243 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 12:18:18,244 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 12:18:18,245 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 12:18:18,247 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 12:18:18,250 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 12:18:18,252 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 12:18:18,253 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 12:18:18,256 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 12:18:18,262 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 12:18:18,270 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 12:18:18,273 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 12:18:18,275 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 12:18:18,276 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 12:18:18,278 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 12:18:18,286 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 12:18:18,287 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 12:18:18,289 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 12:18:18,290 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 12:18:18,291 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 12:18:18,293 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 12:18:18,293 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 12:18:18,298 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 12:18:18,298 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 12:18:18,300 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 12:18:18,301 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 12:18:18,302 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 12:18:18,303 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 12:18:18,303 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 12:18:18,303 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 12:18:18,304 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 12:18:18,305 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 12:18:18,309 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 12:18:18,362 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 12:18:18,362 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 12:18:18,364 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 12:18:18,364 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 12:18:18,365 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 12:18:18,365 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 12:18:18,366 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 12:18:18,366 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 12:18:18,366 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 12:18:18,367 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 12:18:18,368 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 12:18:18,368 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 12:18:18,368 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 12:18:18,368 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 12:18:18,369 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 12:18:18,369 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 12:18:18,369 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 12:18:18,369 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 12:18:18,369 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 12:18:18,370 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 12:18:18,370 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 12:18:18,370 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:18:18,370 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 12:18:18,370 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 12:18:18,371 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 12:18:18,371 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 12:18:18,371 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 12:18:18,371 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 12:18:18,371 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 12:18:18,371 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 12:18:18,829 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 12:18:18,865 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 12:18:18,872 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 12:18:18,874 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 12:18:18,875 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 12:18:18,876 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label24.c [2020-10-28 12:18:18,968 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a59ba6d52/b6b4712355da480ab944b0cdc99e3769/FLAG970d01156 [2020-10-28 12:18:20,008 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 12:18:20,009 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label24.c [2020-10-28 12:18:20,059 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a59ba6d52/b6b4712355da480ab944b0cdc99e3769/FLAG970d01156 [2020-10-28 12:18:20,475 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a59ba6d52/b6b4712355da480ab944b0cdc99e3769 [2020-10-28 12:18:20,479 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 12:18:20,488 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 12:18:20,492 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 12:18:20,492 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 12:18:20,496 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 12:18:20,498 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:18:20" (1/1) ... [2020-10-28 12:18:20,502 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17d4cfc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:18:20, skipping insertion in model container [2020-10-28 12:18:20,502 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:18:20" (1/1) ... [2020-10-28 12:18:20,511 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 12:18:20,690 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 12:18:21,958 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:18:21,970 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 12:18:22,548 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:18:22,582 INFO L208 MainTranslator]: Completed translation [2020-10-28 12:18:22,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:18:22 WrapperNode [2020-10-28 12:18:22,583 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 12:18:22,584 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 12:18:22,585 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 12:18:22,585 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 12:18:22,598 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:18:22" (1/1) ... [2020-10-28 12:18:22,600 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:18:22" (1/1) ... [2020-10-28 12:18:22,684 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:18:22" (1/1) ... [2020-10-28 12:18:22,685 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:18:22" (1/1) ... [2020-10-28 12:18:22,800 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:18:22" (1/1) ... [2020-10-28 12:18:22,827 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:18:22" (1/1) ... [2020-10-28 12:18:22,853 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:18:22" (1/1) ... [2020-10-28 12:18:22,880 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 12:18:22,882 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 12:18:22,883 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 12:18:22,883 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 12:18:22,884 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:18:22" (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 12:18:22,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 12:18:22,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 12:18:22,966 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 12:18:22,966 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 12:18:22,967 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 12:18:22,967 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 12:18:22,967 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-28 12:18:22,967 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 12:18:22,967 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 12:18:22,967 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 12:18:22,967 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 12:18:22,968 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-28 12:18:22,968 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 12:18:22,968 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 12:18:22,968 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 12:18:22,968 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 12:18:22,968 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 12:18:22,969 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 12:18:22,969 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 12:18:22,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 12:18:22,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 12:18:22,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 12:18:22,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 12:18:22,969 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 12:18:22,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 12:18:28,033 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 12:18:28,034 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 12:18:28,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:18:28 BoogieIcfgContainer [2020-10-28 12:18:28,037 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 12:18:28,039 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 12:18:28,039 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 12:18:28,043 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 12:18:28,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:18:20" (1/3) ... [2020-10-28 12:18:28,044 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1830c67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:18:28, skipping insertion in model container [2020-10-28 12:18:28,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:18:22" (2/3) ... [2020-10-28 12:18:28,044 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1830c67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:18:28, skipping insertion in model container [2020-10-28 12:18:28,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:18:28" (3/3) ... [2020-10-28 12:18:28,046 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label24.c [2020-10-28 12:18:28,057 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 12:18:28,063 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 12:18:28,076 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 12:18:28,108 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 12:18:28,108 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 12:18:28,108 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 12:18:28,108 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 12:18:28,109 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 12:18:28,109 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 12:18:28,109 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 12:18:28,109 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 12:18:28,142 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states. [2020-10-28 12:18:28,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-28 12:18:28,150 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:18:28,151 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:18:28,152 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:18:28,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:18:28,158 INFO L82 PathProgramCache]: Analyzing trace with hash 72702148, now seen corresponding path program 1 times [2020-10-28 12:18:28,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:18:28,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [207088684] [2020-10-28 12:18:28,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:18:28,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:18:28,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:28,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:18:28,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-28 12:18:28,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:18:28,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 607 [2020-10-28 12:18:28,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:18:28,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:18:28,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:18:28,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:18:28,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-28 12:18:28,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 12:18:29,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:18:29,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:18:29,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:29,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:18:29,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:18:29,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:18:29,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 12:18:29,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:18:29,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:18:29,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:18:29,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:18:29,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:18:29,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:18:29,172 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 12:18:29,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [207088684] [2020-10-28 12:18:29,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:18:29,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 12:18:29,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613709573] [2020-10-28 12:18:29,180 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:18:29,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:18:29,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:18:29,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:18:29,198 INFO L87 Difference]: Start difference. First operand 843 states. Second operand 5 states. [2020-10-28 12:18:29,347 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 12:18:46,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:18:46,348 INFO L93 Difference]: Finished difference Result 3258 states and 6299 transitions. [2020-10-28 12:18:46,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 12:18:46,355 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 53 [2020-10-28 12:18:46,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:18:46,400 INFO L225 Difference]: With dead ends: 3258 [2020-10-28 12:18:46,400 INFO L226 Difference]: Without dead ends: 2347 [2020-10-28 12:18:46,411 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:18:46,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2347 states. [2020-10-28 12:18:46,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2347 to 2334. [2020-10-28 12:18:46,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2334 states. [2020-10-28 12:18:46,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2334 states to 2334 states and 3791 transitions. [2020-10-28 12:18:46,627 INFO L78 Accepts]: Start accepts. Automaton has 2334 states and 3791 transitions. Word has length 53 [2020-10-28 12:18:46,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:18:46,628 INFO L481 AbstractCegarLoop]: Abstraction has 2334 states and 3791 transitions. [2020-10-28 12:18:46,628 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:18:46,629 INFO L276 IsEmpty]: Start isEmpty. Operand 2334 states and 3791 transitions. [2020-10-28 12:18:46,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-28 12:18:46,643 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:18:46,644 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, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:18:46,645 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 12:18:46,645 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:18:46,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:18:46,646 INFO L82 PathProgramCache]: Analyzing trace with hash 115931909, now seen corresponding path program 1 times [2020-10-28 12:18:46,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:18:46,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1703236410] [2020-10-28 12:18:46,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:18:46,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:18:46,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:47,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:47,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:18:47,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-28 12:18:47,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:18:47,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 585 [2020-10-28 12:18:47,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:18:47,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:18:47,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:18:47,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-28 12:18:47,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-28 12:18:47,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:18:47,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:18:47,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:18:47,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:47,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:18:47,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:18:47,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:18:47,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:18:47,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:18:47,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:18:47,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:18:47,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:18:47,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:18:47,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-28 12:18:47,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:18:47,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:18:47,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:47,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:18:47,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 12:18:47,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:18:47,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-28 12:18:47,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:18:47,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:18:47,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:18:47,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:18:47,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 12:18:47,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:18:47,710 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 44 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:18:47,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1703236410] [2020-10-28 12:18:47,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:18:47,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 12:18:47,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074809680] [2020-10-28 12:18:47,713 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 12:18:47,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:18:47,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 12:18:47,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:18:47,718 INFO L87 Difference]: Start difference. First operand 2334 states and 3791 transitions. Second operand 6 states. [2020-10-28 12:19:04,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:19:04,657 INFO L93 Difference]: Finished difference Result 9356 states and 15511 transitions. [2020-10-28 12:19:04,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 12:19:04,661 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 128 [2020-10-28 12:19:04,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:19:04,718 INFO L225 Difference]: With dead ends: 9356 [2020-10-28 12:19:04,719 INFO L226 Difference]: Without dead ends: 7028 [2020-10-28 12:19:04,729 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:19:04,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7028 states. [2020-10-28 12:19:04,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7028 to 7017. [2020-10-28 12:19:04,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7017 states. [2020-10-28 12:19:05,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7017 states to 7017 states and 11000 transitions. [2020-10-28 12:19:05,018 INFO L78 Accepts]: Start accepts. Automaton has 7017 states and 11000 transitions. Word has length 128 [2020-10-28 12:19:05,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:19:05,021 INFO L481 AbstractCegarLoop]: Abstraction has 7017 states and 11000 transitions. [2020-10-28 12:19:05,021 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 12:19:05,022 INFO L276 IsEmpty]: Start isEmpty. Operand 7017 states and 11000 transitions. [2020-10-28 12:19:05,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-10-28 12:19:05,035 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:19:05,035 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:19:05,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 12:19:05,036 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:19:05,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:19:05,037 INFO L82 PathProgramCache]: Analyzing trace with hash 1928319968, now seen corresponding path program 1 times [2020-10-28 12:19:05,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:19:05,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [479045004] [2020-10-28 12:19:05,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:19:05,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:19:05,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:05,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:05,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:06,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:08,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:19:08,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 215 [2020-10-28 12:19:08,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:19:08,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3258 [2020-10-28 12:19:08,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:19:08,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:19:08,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:19:08,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-28 12:19:08,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 12:19:08,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 12:19:08,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:19:08,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:19:08,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:08,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:19:08,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:19:08,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:19:08,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:19:08,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:19:08,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:19:08,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:19:08,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:19:08,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:19:08,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:19:08,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:19:08,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:19:08,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:08,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:19:08,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 12:19:08,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:19:08,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-28 12:19:08,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:19:08,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:19:08,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:19:08,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:19:08,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 12:19:08,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:19:08,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-28 12:19:08,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:19:08,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:08,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:19:08,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 12:19:08,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:19:08,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-28 12:19:08,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:19:08,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:19:08,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:19:08,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:19:08,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 12:19:08,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:19:08,932 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 160 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:19:08,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [479045004] [2020-10-28 12:19:08,933 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:19:08,933 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:19:08,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828069458] [2020-10-28 12:19:08,935 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:19:08,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:19:08,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:19:08,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:19:08,940 INFO L87 Difference]: Start difference. First operand 7017 states and 11000 transitions. Second operand 7 states. [2020-10-28 12:19:23,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:19:23,549 INFO L93 Difference]: Finished difference Result 14251 states and 22469 transitions. [2020-10-28 12:19:23,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:19:23,558 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 201 [2020-10-28 12:19:23,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:19:23,603 INFO L225 Difference]: With dead ends: 14251 [2020-10-28 12:19:23,603 INFO L226 Difference]: Without dead ends: 7240 [2020-10-28 12:19:23,623 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 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 12:19:23,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7240 states. [2020-10-28 12:19:23,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7240 to 7137. [2020-10-28 12:19:23,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7137 states. [2020-10-28 12:19:23,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7137 states to 7137 states and 9628 transitions. [2020-10-28 12:19:23,860 INFO L78 Accepts]: Start accepts. Automaton has 7137 states and 9628 transitions. Word has length 201 [2020-10-28 12:19:23,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:19:23,862 INFO L481 AbstractCegarLoop]: Abstraction has 7137 states and 9628 transitions. [2020-10-28 12:19:23,862 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:19:23,862 INFO L276 IsEmpty]: Start isEmpty. Operand 7137 states and 9628 transitions. [2020-10-28 12:19:23,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-10-28 12:19:23,868 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:19:23,869 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:19:23,869 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 12:19:23,869 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:19:23,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:19:23,870 INFO L82 PathProgramCache]: Analyzing trace with hash 364192348, now seen corresponding path program 1 times [2020-10-28 12:19:23,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:19:23,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1046910773] [2020-10-28 12:19:23,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:19:23,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:19:23,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:24,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:25,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:27,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:19:27,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-10-28 12:19:27,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:19:27,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3415 [2020-10-28 12:19:27,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:19:27,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:19:27,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:19:27,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:19:27,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-28 12:19:27,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:19:27,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:19:27,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:19:27,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:27,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:19:27,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:19:27,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:19:27,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 12:19:27,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:19:27,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:19:27,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:19:27,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:19:27,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:19:27,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:19:27,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:19:27,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:19:27,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:27,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:19:27,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-28 12:19:27,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:19:27,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-28 12:19:27,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:19:27,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:19:27,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:19:27,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:19:27,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-28 12:19:27,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:19:27,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-28 12:19:27,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:19:27,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:27,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:19:27,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 12:19:27,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:19:27,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-28 12:19:27,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:19:27,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:19:27,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:19:27,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-28 12:19:27,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:19:27,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:19:27,849 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 90 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 12:19:27,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1046910773] [2020-10-28 12:19:27,850 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:19:27,850 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 12:19:27,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452940706] [2020-10-28 12:19:27,851 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:19:27,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:19:27,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:19:27,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:19:27,852 INFO L87 Difference]: Start difference. First operand 7137 states and 9628 transitions. Second operand 8 states. [2020-10-28 12:19:48,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:19:48,277 INFO L93 Difference]: Finished difference Result 28997 states and 42086 transitions. [2020-10-28 12:19:48,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 12:19:48,279 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 203 [2020-10-28 12:19:48,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:19:48,388 INFO L225 Difference]: With dead ends: 28997 [2020-10-28 12:19:48,388 INFO L226 Difference]: Without dead ends: 21866 [2020-10-28 12:19:48,418 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 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 12:19:48,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21866 states. [2020-10-28 12:19:49,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21866 to 21753. [2020-10-28 12:19:49,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21753 states. [2020-10-28 12:19:49,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21753 states to 21753 states and 29369 transitions. [2020-10-28 12:19:49,159 INFO L78 Accepts]: Start accepts. Automaton has 21753 states and 29369 transitions. Word has length 203 [2020-10-28 12:19:49,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:19:49,160 INFO L481 AbstractCegarLoop]: Abstraction has 21753 states and 29369 transitions. [2020-10-28 12:19:49,160 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:19:49,160 INFO L276 IsEmpty]: Start isEmpty. Operand 21753 states and 29369 transitions. [2020-10-28 12:19:49,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-10-28 12:19:49,168 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:19:49,168 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, 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, 1, 1, 1, 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 12:19:49,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 12:19:49,169 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:19:49,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:19:49,169 INFO L82 PathProgramCache]: Analyzing trace with hash -259233468, now seen corresponding path program 1 times [2020-10-28 12:19:49,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:19:49,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [449479123] [2020-10-28 12:19:49,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:19:49,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:19:49,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:49,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:50,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:50,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:53,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:19:53,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-10-28 12:19:53,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:19:53,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3907 [2020-10-28 12:19:53,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:19:53,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:19:53,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:19:53,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:19:53,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 12:19:53,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:19:53,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:19:53,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:19:53,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:53,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:19:53,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:19:53,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:19:53,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 12:19:53,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:19:53,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:19:53,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:19:53,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:19:53,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:19:53,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:19:53,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:19:53,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:19:53,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:53,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:19:53,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 12:19:53,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:19:53,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-28 12:19:53,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:19:53,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:19:53,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:19:53,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:19:53,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-28 12:19:53,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:19:53,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-28 12:19:53,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:19:53,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:53,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:19:53,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 12:19:53,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:19:53,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 12:19:53,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:19:53,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:19:53,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:19:53,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-28 12:19:53,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:19:53,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:19:53,679 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 90 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 12:19:53,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [449479123] [2020-10-28 12:19:53,680 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:19:53,680 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:19:53,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533326449] [2020-10-28 12:19:53,681 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:19:53,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:19:53,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:19:53,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:19:53,683 INFO L87 Difference]: Start difference. First operand 21753 states and 29369 transitions. Second operand 7 states. [2020-10-28 12:20:11,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:20:11,310 INFO L93 Difference]: Finished difference Result 64761 states and 93123 transitions. [2020-10-28 12:20:11,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:20:11,312 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 215 [2020-10-28 12:20:11,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:20:11,482 INFO L225 Difference]: With dead ends: 64761 [2020-10-28 12:20:11,483 INFO L226 Difference]: Without dead ends: 43014 [2020-10-28 12:20:11,571 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:20:11,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43014 states. [2020-10-28 12:20:12,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43014 to 40429. [2020-10-28 12:20:12,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40429 states. [2020-10-28 12:20:13,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40429 states to 40429 states and 53521 transitions. [2020-10-28 12:20:13,044 INFO L78 Accepts]: Start accepts. Automaton has 40429 states and 53521 transitions. Word has length 215 [2020-10-28 12:20:13,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:20:13,044 INFO L481 AbstractCegarLoop]: Abstraction has 40429 states and 53521 transitions. [2020-10-28 12:20:13,044 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:20:13,044 INFO L276 IsEmpty]: Start isEmpty. Operand 40429 states and 53521 transitions. [2020-10-28 12:20:13,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2020-10-28 12:20:13,052 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:20:13,053 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:20:13,053 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 12:20:13,053 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:20:13,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:20:13,054 INFO L82 PathProgramCache]: Analyzing trace with hash -63200424, now seen corresponding path program 1 times [2020-10-28 12:20:13,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:20:13,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [493329992] [2020-10-28 12:20:13,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:20:13,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:20:13,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:13,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:16,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:20:16,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 288 [2020-10-28 12:20:16,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:20:16,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3002 [2020-10-28 12:20:16,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:20:16,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:20:16,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:20:16,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:20:16,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-28 12:20:16,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:20:16,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:20:16,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:20:16,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:16,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:20:16,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:20:16,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:20:16,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 12:20:16,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:20:16,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:20:16,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:20:16,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:20:16,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:20:16,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:20:16,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:20:16,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:20:16,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:16,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:20:16,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-28 12:20:16,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:20:16,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-10-28 12:20:16,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:20:16,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:20:16,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:20:16,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:20:16,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-28 12:20:16,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:20:16,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-28 12:20:16,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:20:16,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:16,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:20:16,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 12:20:16,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:20:16,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 12:20:16,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:20:16,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:20:16,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:20:16,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-28 12:20:16,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:20:16,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:20:17,131 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 90 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 12:20:17,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [493329992] [2020-10-28 12:20:17,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:20:17,133 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:20:17,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467242678] [2020-10-28 12:20:17,134 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:20:17,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:20:17,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:20:17,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:20:17,135 INFO L87 Difference]: Start difference. First operand 40429 states and 53521 transitions. Second operand 7 states. [2020-10-28 12:20:30,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:20:30,905 INFO L93 Difference]: Finished difference Result 81934 states and 108809 transitions. [2020-10-28 12:20:30,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:20:30,907 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 274 [2020-10-28 12:20:30,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:20:31,047 INFO L225 Difference]: With dead ends: 81934 [2020-10-28 12:20:31,049 INFO L226 Difference]: Without dead ends: 41511 [2020-10-28 12:20:31,106 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:20:31,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41511 states. [2020-10-28 12:20:32,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41511 to 41310. [2020-10-28 12:20:32,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41310 states. [2020-10-28 12:20:32,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41310 states to 41310 states and 54533 transitions. [2020-10-28 12:20:32,392 INFO L78 Accepts]: Start accepts. Automaton has 41310 states and 54533 transitions. Word has length 274 [2020-10-28 12:20:32,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:20:32,393 INFO L481 AbstractCegarLoop]: Abstraction has 41310 states and 54533 transitions. [2020-10-28 12:20:32,393 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:20:32,393 INFO L276 IsEmpty]: Start isEmpty. Operand 41310 states and 54533 transitions. [2020-10-28 12:20:32,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2020-10-28 12:20:32,406 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:20:32,409 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-28 12:20:32,409 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 12:20:32,409 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:20:32,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:20:32,410 INFO L82 PathProgramCache]: Analyzing trace with hash -178947375, now seen corresponding path program 1 times [2020-10-28 12:20:32,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:20:32,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2144992551] [2020-10-28 12:20:32,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:20:32,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:20:32,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:32,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:33,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:34,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:37,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:20:37,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 376 [2020-10-28 12:20:37,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:20:37,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 12:20:37,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:20:37,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:20:37,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:20:37,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-28 12:20:37,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-28 12:20:37,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 12:20:37,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:20:37,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:20:37,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:37,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:20:37,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:20:37,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:20:37,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:20:37,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:20:37,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:20:37,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:20:37,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:20:37,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:20:37,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:20:37,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:20:37,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:20:37,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:37,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:20:37,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-28 12:20:37,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:20:37,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-28 12:20:37,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:20:37,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:20:37,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:20:37,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:20:37,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-28 12:20:37,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:20:37,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-28 12:20:37,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:20:37,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:37,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:38,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:20:38,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 12:20:38,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:20:38,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-28 12:20:38,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:20:38,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:20:38,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:20:38,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:20:38,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-28 12:20:38,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:20:38,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2020-10-28 12:20:38,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:20:38,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:38,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:20:38,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 12:20:38,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:20:38,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-28 12:20:38,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:20:38,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:20:38,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:20:38,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:20:38,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 12:20:38,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:20:38,791 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 357 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-28 12:20:38,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2144992551] [2020-10-28 12:20:38,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:20:38,791 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 12:20:38,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727915616] [2020-10-28 12:20:38,792 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:20:38,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:20:38,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:20:38,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:20:38,794 INFO L87 Difference]: Start difference. First operand 41310 states and 54533 transitions. Second operand 8 states. [2020-10-28 12:20:59,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:20:59,743 INFO L93 Difference]: Finished difference Result 92415 states and 124117 transitions. [2020-10-28 12:20:59,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 12:20:59,744 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 360 [2020-10-28 12:20:59,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:20:59,913 INFO L225 Difference]: With dead ends: 92415 [2020-10-28 12:20:59,913 INFO L226 Difference]: Without dead ends: 51878 [2020-10-28 12:20:59,972 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2020-10-28 12:21:00,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51878 states. [2020-10-28 12:21:01,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51878 to 50935. [2020-10-28 12:21:01,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50935 states. [2020-10-28 12:21:01,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50935 states to 50935 states and 66005 transitions. [2020-10-28 12:21:01,569 INFO L78 Accepts]: Start accepts. Automaton has 50935 states and 66005 transitions. Word has length 360 [2020-10-28 12:21:01,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:21:01,572 INFO L481 AbstractCegarLoop]: Abstraction has 50935 states and 66005 transitions. [2020-10-28 12:21:01,572 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:21:01,572 INFO L276 IsEmpty]: Start isEmpty. Operand 50935 states and 66005 transitions. [2020-10-28 12:21:01,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2020-10-28 12:21:01,611 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:21:01,614 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-28 12:21:01,614 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 12:21:01,614 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:21:01,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:21:01,615 INFO L82 PathProgramCache]: Analyzing trace with hash -1151544103, now seen corresponding path program 1 times [2020-10-28 12:21:01,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:21:01,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [156550636] [2020-10-28 12:21:01,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:21:01,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:21:01,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:02,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:03,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:06,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:21:06,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 380 [2020-10-28 12:21:06,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:21:06,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4539 [2020-10-28 12:21:06,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:21:06,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:21:06,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:21:06,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-28 12:21:06,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-28 12:21:06,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:21:06,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:21:06,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:21:06,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:06,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:21:06,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:21:06,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:21:06,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:21:06,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:21:06,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:21:06,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:21:06,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:21:06,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:21:06,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:21:06,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:21:06,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:21:06,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:06,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:21:06,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-28 12:21:06,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:21:06,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-28 12:21:06,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:21:06,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:21:06,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:21:06,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:21:06,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-28 12:21:06,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:21:06,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-28 12:21:06,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:21:06,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:06,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:21:06,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 12:21:06,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:21:06,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-28 12:21:06,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:21:06,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:21:06,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:21:06,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:21:06,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-28 12:21:06,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:21:06,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-10-28 12:21:06,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:21:06,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:06,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:21:06,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 12:21:06,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:21:06,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 12:21:06,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:21:06,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:21:06,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:21:06,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-28 12:21:06,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:21:06,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:21:06,844 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 225 proven. 72 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-28 12:21:06,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [156550636] [2020-10-28 12:21:06,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:21:06,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:21:06,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789025136] [2020-10-28 12:21:06,845 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:21:06,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:21:06,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:21:06,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:21:06,846 INFO L87 Difference]: Start difference. First operand 50935 states and 66005 transitions. Second operand 7 states. [2020-10-28 12:21:33,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:21:33,490 INFO L93 Difference]: Finished difference Result 135658 states and 180718 transitions. [2020-10-28 12:21:33,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:21:33,493 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 364 [2020-10-28 12:21:33,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:21:33,804 INFO L225 Difference]: With dead ends: 135658 [2020-10-28 12:21:33,804 INFO L226 Difference]: Without dead ends: 85496 [2020-10-28 12:21:33,893 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:21:33,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85496 states. [2020-10-28 12:21:36,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85496 to 78486. [2020-10-28 12:21:36,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78486 states. [2020-10-28 12:21:36,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78486 states to 78486 states and 100307 transitions. [2020-10-28 12:21:36,288 INFO L78 Accepts]: Start accepts. Automaton has 78486 states and 100307 transitions. Word has length 364 [2020-10-28 12:21:36,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:21:36,289 INFO L481 AbstractCegarLoop]: Abstraction has 78486 states and 100307 transitions. [2020-10-28 12:21:36,289 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:21:36,289 INFO L276 IsEmpty]: Start isEmpty. Operand 78486 states and 100307 transitions. [2020-10-28 12:21:36,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2020-10-28 12:21:36,305 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:21:36,306 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-28 12:21:36,306 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 12:21:36,306 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:21:36,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:21:36,307 INFO L82 PathProgramCache]: Analyzing trace with hash -1316920131, now seen corresponding path program 1 times [2020-10-28 12:21:36,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:21:36,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [645070718] [2020-10-28 12:21:36,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:21:36,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:21:36,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:37,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:38,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:21:38,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 419 [2020-10-28 12:21:38,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:21:38,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1463 [2020-10-28 12:21:38,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:21:38,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:21:38,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:21:38,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 260 [2020-10-28 12:21:38,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-28 12:21:38,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:21:38,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:21:38,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:21:38,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:38,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:21:38,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:21:38,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:21:38,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:21:38,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:21:38,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:21:38,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:21:38,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:21:38,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:21:38,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:21:38,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:21:38,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:21:38,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:38,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:21:38,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-28 12:21:38,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:21:38,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 12:21:38,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:21:38,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:21:38,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:21:38,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:21:38,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:21:38,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:21:38,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-28 12:21:38,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:21:38,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:38,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:21:38,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-28 12:21:38,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:21:38,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-28 12:21:38,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:21:38,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:21:38,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:21:38,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:21:38,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-28 12:21:38,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:21:38,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2020-10-28 12:21:38,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:21:38,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:38,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:21:38,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-28 12:21:38,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:21:38,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-28 12:21:38,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:21:38,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:21:38,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:21:38,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:21:38,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-28 12:21:38,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:21:38,692 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 338 proven. 2 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2020-10-28 12:21:38,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [645070718] [2020-10-28 12:21:38,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:21:38,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:21:38,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787725734] [2020-10-28 12:21:38,694 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:21:38,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:21:38,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:21:38,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:21:38,695 INFO L87 Difference]: Start difference. First operand 78486 states and 100307 transitions. Second operand 7 states. [2020-10-28 12:22:00,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:22:00,312 INFO L93 Difference]: Finished difference Result 177216 states and 236711 transitions. [2020-10-28 12:22:00,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:22:00,318 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 403 [2020-10-28 12:22:00,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted.