/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label30.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 07:17:12,256 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 07:17:12,259 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 07:17:12,297 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 07:17:12,297 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 07:17:12,299 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 07:17:12,301 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 07:17:12,303 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 07:17:12,305 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 07:17:12,306 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 07:17:12,308 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 07:17:12,309 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 07:17:12,310 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 07:17:12,311 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 07:17:12,312 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 07:17:12,314 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 07:17:12,315 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 07:17:12,316 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 07:17:12,318 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 07:17:12,321 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 07:17:12,323 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 07:17:12,324 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 07:17:12,326 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 07:17:12,327 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 07:17:12,338 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 07:17:12,338 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 07:17:12,339 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 07:17:12,340 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 07:17:12,341 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 07:17:12,342 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 07:17:12,342 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 07:17:12,343 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 07:17:12,344 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 07:17:12,345 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 07:17:12,347 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 07:17:12,347 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 07:17:12,348 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 07:17:12,348 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 07:17:12,349 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 07:17:12,350 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 07:17:12,351 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 07:17:12,352 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 07:17:12,379 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 07:17:12,379 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 07:17:12,381 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 07:17:12,381 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 07:17:12,382 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 07:17:12,382 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 07:17:12,382 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 07:17:12,383 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 07:17:12,383 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 07:17:12,383 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 07:17:12,384 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 07:17:12,384 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 07:17:12,384 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 07:17:12,384 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 07:17:12,385 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 07:17:12,385 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 07:17:12,385 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 07:17:12,386 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 07:17:12,386 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 07:17:12,386 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 07:17:12,387 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 07:17:12,387 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:17:12,387 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 07:17:12,387 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 07:17:12,388 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 07:17:12,388 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 07:17:12,388 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 07:17:12,388 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 07:17:12,389 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 07:17:12,389 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 07:17:12,795 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 07:17:12,823 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 07:17:12,827 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 07:17:12,828 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 07:17:12,829 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 07:17:12,831 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label30.c [2020-10-29 07:17:12,916 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3d430c1e8/ba16f58b581b48f6b3a20f8ddae9dfb0/FLAGb01c8eea8 [2020-10-29 07:17:14,036 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 07:17:14,037 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label30.c [2020-10-29 07:17:14,078 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3d430c1e8/ba16f58b581b48f6b3a20f8ddae9dfb0/FLAGb01c8eea8 [2020-10-29 07:17:14,362 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3d430c1e8/ba16f58b581b48f6b3a20f8ddae9dfb0 [2020-10-29 07:17:14,365 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 07:17:14,371 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 07:17:14,374 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 07:17:14,375 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 07:17:14,379 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 07:17:14,379 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:17:14" (1/1) ... [2020-10-29 07:17:14,384 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23790e47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:17:14, skipping insertion in model container [2020-10-29 07:17:14,385 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:17:14" (1/1) ... [2020-10-29 07:17:14,394 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 07:17:14,547 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 07:17:16,157 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:17:16,172 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 07:17:16,892 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:17:16,928 INFO L208 MainTranslator]: Completed translation [2020-10-29 07:17:16,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:17:16 WrapperNode [2020-10-29 07:17:16,929 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 07:17:16,930 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 07:17:16,930 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 07:17:16,931 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 07:17:16,944 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:17:16" (1/1) ... [2020-10-29 07:17:16,946 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:17:16" (1/1) ... [2020-10-29 07:17:17,035 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:17:16" (1/1) ... [2020-10-29 07:17:17,036 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:17:16" (1/1) ... [2020-10-29 07:17:17,195 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:17:16" (1/1) ... [2020-10-29 07:17:17,227 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:17:16" (1/1) ... [2020-10-29 07:17:17,287 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:17:16" (1/1) ... [2020-10-29 07:17:17,353 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 07:17:17,355 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 07:17:17,355 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 07:17:17,355 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 07:17:17,356 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:17:16" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:17:17,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 07:17:17,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 07:17:17,442 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 07:17:17,442 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 07:17:17,443 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 07:17:17,443 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 07:17:17,443 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 07:17:17,443 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 07:17:17,443 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 07:17:17,444 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 07:17:17,444 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 07:17:17,445 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 07:17:17,445 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 07:17:17,445 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 07:17:17,445 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 07:17:17,446 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 07:17:17,446 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 07:17:17,446 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 07:17:17,446 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 07:17:17,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 07:17:17,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 07:17:17,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 07:17:17,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 07:17:17,447 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 07:17:17,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 07:17:27,024 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 07:17:27,024 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 07:17:27,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:17:27 BoogieIcfgContainer [2020-10-29 07:17:27,029 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 07:17:27,031 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 07:17:27,031 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 07:17:27,035 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 07:17:27,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 07:17:14" (1/3) ... [2020-10-29 07:17:27,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a86ebb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:17:27, skipping insertion in model container [2020-10-29 07:17:27,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:17:16" (2/3) ... [2020-10-29 07:17:27,037 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a86ebb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:17:27, skipping insertion in model container [2020-10-29 07:17:27,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:17:27" (3/3) ... [2020-10-29 07:17:27,039 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem13_label30.c [2020-10-29 07:17:27,053 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 07:17:27,060 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 07:17:27,074 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 07:17:27,111 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 07:17:27,112 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 07:17:27,112 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 07:17:27,112 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 07:17:27,112 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 07:17:27,113 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 07:17:27,113 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 07:17:27,113 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 07:17:27,156 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states. [2020-10-29 07:17:27,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-29 07:17:27,164 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:17:27,165 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] [2020-10-29 07:17:27,165 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:17:27,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:17:27,172 INFO L82 PathProgramCache]: Analyzing trace with hash -610724470, now seen corresponding path program 1 times [2020-10-29 07:17:27,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:17:27,184 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [927063388] [2020-10-29 07:17:27,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:17:27,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:17:27,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:17:27,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:17:27,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-29 07:17:27,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:17:27,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 510 [2020-10-29 07:17:27,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:17:27,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:17:27,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:17:27,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:17:27,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 07:17:27,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 07:17:28,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:17:28,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:17:28,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:17:28,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:17:28,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:17:28,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:17:28,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 07:17:28,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:17:28,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:17:28,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:17:28,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:17:28,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:17:28,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:17:28,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:17:28,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [927063388] [2020-10-29 07:17:28,074 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:17:28,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 07:17:28,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147092962] [2020-10-29 07:17:28,081 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 07:17:28,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:17:28,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 07:17:28,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 07:17:28,106 INFO L87 Difference]: Start difference. First operand 1123 states. Second operand 4 states. [2020-10-29 07:17:43,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:17:43,752 INFO L93 Difference]: Finished difference Result 3209 states and 5919 transitions. [2020-10-29 07:17:43,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:17:43,755 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-10-29 07:17:43,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:17:43,799 INFO L225 Difference]: With dead ends: 3209 [2020-10-29 07:17:43,799 INFO L226 Difference]: Without dead ends: 2007 [2020-10-29 07:17:43,815 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:17:43,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2007 states. [2020-10-29 07:17:44,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2007 to 1921. [2020-10-29 07:17:44,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1921 states. [2020-10-29 07:17:44,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1921 states to 1921 states and 3312 transitions. [2020-10-29 07:17:44,027 INFO L78 Accepts]: Start accepts. Automaton has 1921 states and 3312 transitions. Word has length 26 [2020-10-29 07:17:44,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:17:44,028 INFO L481 AbstractCegarLoop]: Abstraction has 1921 states and 3312 transitions. [2020-10-29 07:17:44,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 07:17:44,028 INFO L276 IsEmpty]: Start isEmpty. Operand 1921 states and 3312 transitions. [2020-10-29 07:17:44,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-29 07:17:44,037 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:17:44,038 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:17:44,038 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 07:17:44,039 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:17:44,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:17:44,041 INFO L82 PathProgramCache]: Analyzing trace with hash -1746810002, now seen corresponding path program 1 times [2020-10-29 07:17:44,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:17:44,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1987331999] [2020-10-29 07:17:44,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:17:44,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:17:44,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:17:44,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:17:44,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:17:45,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:17:45,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-29 07:17:45,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:17:45,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1369 [2020-10-29 07:17:45,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:17:45,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:17:45,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:17:45,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:17:45,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 07:17:45,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-29 07:17:45,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:17:45,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:17:45,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:17:45,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:17:45,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:17:45,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:17:45,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 07:17:45,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:17:45,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:17:45,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:17:45,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:17:45,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:17:45,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-29 07:17:45,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:17:45,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:17:45,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:17:45,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:17:45,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 07:17:45,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:17:45,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-29 07:17:45,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:17:45,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:17:45,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:17:45,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:17:45,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 07:17:45,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:17:46,006 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:17:46,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1987331999] [2020-10-29 07:17:46,007 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:17:46,007 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 07:17:46,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478232516] [2020-10-29 07:17:46,010 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:17:46,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:17:46,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:17:46,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:17:46,012 INFO L87 Difference]: Start difference. First operand 1921 states and 3312 transitions. Second operand 8 states. [2020-10-29 07:18:09,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:18:09,158 INFO L93 Difference]: Finished difference Result 7369 states and 12924 transitions. [2020-10-29 07:18:09,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 07:18:09,159 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 95 [2020-10-29 07:18:09,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:18:09,192 INFO L225 Difference]: With dead ends: 7369 [2020-10-29 07:18:09,192 INFO L226 Difference]: Without dead ends: 5454 [2020-10-29 07:18:09,201 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-10-29 07:18:09,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5454 states. [2020-10-29 07:18:09,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5454 to 5397. [2020-10-29 07:18:09,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5397 states. [2020-10-29 07:18:09,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5397 states to 5397 states and 8253 transitions. [2020-10-29 07:18:09,397 INFO L78 Accepts]: Start accepts. Automaton has 5397 states and 8253 transitions. Word has length 95 [2020-10-29 07:18:09,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:18:09,397 INFO L481 AbstractCegarLoop]: Abstraction has 5397 states and 8253 transitions. [2020-10-29 07:18:09,397 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:18:09,398 INFO L276 IsEmpty]: Start isEmpty. Operand 5397 states and 8253 transitions. [2020-10-29 07:18:09,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-29 07:18:09,407 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:18:09,408 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:18:09,408 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 07:18:09,408 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:18:09,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:18:09,409 INFO L82 PathProgramCache]: Analyzing trace with hash 779391018, now seen corresponding path program 1 times [2020-10-29 07:18:09,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:18:09,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1321605310] [2020-10-29 07:18:09,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:18:09,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:18:09,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:18:09,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:18:10,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:18:10,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-29 07:18:10,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:18:10,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 929 [2020-10-29 07:18:10,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:18:10,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:18:10,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:18:10,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:18:10,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 07:18:10,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:18:10,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:18:10,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:18:10,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:18:10,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:18:10,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:18:10,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:18:10,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 07:18:10,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:18:10,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:18:10,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:18:10,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:18:10,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:18:10,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:18:10,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:18:10,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:18:10,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:18:10,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:18:10,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 07:18:10,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:18:10,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-29 07:18:10,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:18:10,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:18:10,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:18:10,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:18:10,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 07:18:10,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:18:10,750 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:18:10,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1321605310] [2020-10-29 07:18:10,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:18:10,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:18:10,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656733008] [2020-10-29 07:18:10,753 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:18:10,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:18:10,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:18:10,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:18:10,754 INFO L87 Difference]: Start difference. First operand 5397 states and 8253 transitions. Second operand 7 states. [2020-10-29 07:18:34,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:18:34,964 INFO L93 Difference]: Finished difference Result 16071 states and 25517 transitions. [2020-10-29 07:18:34,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:18:34,965 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 97 [2020-10-29 07:18:34,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:18:35,031 INFO L225 Difference]: With dead ends: 16071 [2020-10-29 07:18:35,031 INFO L226 Difference]: Without dead ends: 10680 [2020-10-29 07:18:35,050 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:18:35,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10680 states. [2020-10-29 07:18:35,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10680 to 10463. [2020-10-29 07:18:35,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10463 states. [2020-10-29 07:18:35,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10463 states to 10463 states and 14221 transitions. [2020-10-29 07:18:35,426 INFO L78 Accepts]: Start accepts. Automaton has 10463 states and 14221 transitions. Word has length 97 [2020-10-29 07:18:35,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:18:35,427 INFO L481 AbstractCegarLoop]: Abstraction has 10463 states and 14221 transitions. [2020-10-29 07:18:35,427 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:18:35,427 INFO L276 IsEmpty]: Start isEmpty. Operand 10463 states and 14221 transitions. [2020-10-29 07:18:35,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-29 07:18:35,435 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:18:35,435 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:18:35,436 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 07:18:35,436 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:18:35,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:18:35,438 INFO L82 PathProgramCache]: Analyzing trace with hash -457810786, now seen corresponding path program 1 times [2020-10-29 07:18:35,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:18:35,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2096800701] [2020-10-29 07:18:35,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:18:35,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:18:35,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:18:35,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:18:36,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:18:36,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:18:36,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-29 07:18:36,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:18:36,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 915 [2020-10-29 07:18:36,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:18:36,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:18:36,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:18:36,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:18:36,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-29 07:18:36,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:18:36,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:18:36,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:18:36,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:18:36,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:18:36,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:18:36,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:18:36,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 07:18:36,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:18:36,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:18:36,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:18:36,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:18:36,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:18:36,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:18:36,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:18:36,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:18:36,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:18:36,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:18:36,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 07:18:36,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:18:36,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-10-29 07:18:36,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:18:36,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:18:36,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:18:36,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:18:36,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 07:18:36,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 07:18:36,897 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:18:36,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2096800701] [2020-10-29 07:18:36,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:18:36,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:18:36,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522259001] [2020-10-29 07:18:36,899 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:18:36,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:18:36,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:18:36,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:18:36,900 INFO L87 Difference]: Start difference. First operand 10463 states and 14221 transitions. Second operand 7 states. [2020-10-29 07:18:58,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:18:58,237 INFO L93 Difference]: Finished difference Result 29228 states and 41899 transitions. [2020-10-29 07:18:58,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:18:58,239 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 103 [2020-10-29 07:18:58,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:18:58,334 INFO L225 Difference]: With dead ends: 29228 [2020-10-29 07:18:58,334 INFO L226 Difference]: Without dead ends: 18771 [2020-10-29 07:18:58,363 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:18:58,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18771 states. [2020-10-29 07:18:58,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18771 to 18368. [2020-10-29 07:18:58,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18368 states. [2020-10-29 07:18:58,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18368 states to 18368 states and 24101 transitions. [2020-10-29 07:18:58,882 INFO L78 Accepts]: Start accepts. Automaton has 18368 states and 24101 transitions. Word has length 103 [2020-10-29 07:18:58,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:18:58,882 INFO L481 AbstractCegarLoop]: Abstraction has 18368 states and 24101 transitions. [2020-10-29 07:18:58,882 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:18:58,882 INFO L276 IsEmpty]: Start isEmpty. Operand 18368 states and 24101 transitions. [2020-10-29 07:18:58,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-10-29 07:18:58,886 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:18:58,886 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:18:58,886 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 07:18:58,886 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:18:58,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:18:58,887 INFO L82 PathProgramCache]: Analyzing trace with hash 177933290, now seen corresponding path program 1 times [2020-10-29 07:18:58,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:18:58,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [301823365] [2020-10-29 07:18:58,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:18:58,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:18:58,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:18:59,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:19:01,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:19:01,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-10-29 07:19:01,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:19:01,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2215 [2020-10-29 07:19:01,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:19:01,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:19:01,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:19:01,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:19:01,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-29 07:19:01,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:19:01,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:19:01,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:19:01,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:19:01,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:19:01,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:19:01,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:19:01,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 07:19:01,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:19:01,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:19:01,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:19:01,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:19:01,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:19:01,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:19:01,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:19:01,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:19:01,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:19:01,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:19:01,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-29 07:19:01,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:19:01,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 259 [2020-10-29 07:19:01,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:19:01,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:19:01,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:19:01,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:19:01,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-29 07:19:01,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:19:01,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-29 07:19:01,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:19:01,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:19:01,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:19:01,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 07:19:01,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:19:01,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-29 07:19:01,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:19:01,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:19:01,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:19:01,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-29 07:19:01,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:19:01,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:19:01,951 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 36 proven. 72 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 07:19:01,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [301823365] [2020-10-29 07:19:01,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:19:01,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:19:01,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282057887] [2020-10-29 07:19:01,953 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:19:01,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:19:01,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:19:01,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:19:01,955 INFO L87 Difference]: Start difference. First operand 18368 states and 24101 transitions. Second operand 7 states. [2020-10-29 07:19:20,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:19:20,875 INFO L93 Difference]: Finished difference Result 36611 states and 48850 transitions. [2020-10-29 07:19:20,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:19:20,882 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 196 [2020-10-29 07:19:20,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:19:20,966 INFO L225 Difference]: With dead ends: 36611 [2020-10-29 07:19:20,966 INFO L226 Difference]: Without dead ends: 19052 [2020-10-29 07:19:21,010 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:19:21,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19052 states. [2020-10-29 07:19:21,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19052 to 18567. [2020-10-29 07:19:21,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18567 states. [2020-10-29 07:19:21,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18567 states to 18567 states and 24562 transitions. [2020-10-29 07:19:21,640 INFO L78 Accepts]: Start accepts. Automaton has 18567 states and 24562 transitions. Word has length 196 [2020-10-29 07:19:21,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:19:21,641 INFO L481 AbstractCegarLoop]: Abstraction has 18567 states and 24562 transitions. [2020-10-29 07:19:21,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:19:21,642 INFO L276 IsEmpty]: Start isEmpty. Operand 18567 states and 24562 transitions. [2020-10-29 07:19:21,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-10-29 07:19:21,645 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:19:21,645 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:19:21,645 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 07:19:21,646 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:19:21,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:19:21,646 INFO L82 PathProgramCache]: Analyzing trace with hash 465151457, now seen corresponding path program 1 times [2020-10-29 07:19:21,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:19:21,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2104348076] [2020-10-29 07:19:21,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:19:21,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:19:21,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:19:21,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:19:22,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:19:23,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:19:23,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-10-29 07:19:23,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:19:23,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1352 [2020-10-29 07:19:23,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:19:23,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:19:23,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:19:23,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-29 07:19:23,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 07:19:23,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:19:23,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:19:23,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:19:23,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:19:23,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:19:23,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:19:23,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:19:23,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:19:23,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:19:23,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:19:23,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:19:23,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:19:23,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:19:23,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:19:23,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:19:23,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:19:23,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:19:23,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:19:23,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-29 07:19:23,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:19:23,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-29 07:19:23,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:19:23,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:19:23,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:19:23,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:19:23,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 07:19:23,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:19:23,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-29 07:19:23,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:19:23,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:19:23,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:19:23,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 07:19:23,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:19:23,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-29 07:19:23,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:19:23,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:19:23,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:19:23,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:19:23,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 07:19:23,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:19:23,832 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 110 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:19:23,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2104348076] [2020-10-29 07:19:23,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:19:23,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:19:23,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792929758] [2020-10-29 07:19:23,835 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:19:23,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:19:23,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:19:23,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:19:23,843 INFO L87 Difference]: Start difference. First operand 18567 states and 24562 transitions. Second operand 7 states. [2020-10-29 07:19:48,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:19:48,596 INFO L93 Difference]: Finished difference Result 45387 states and 64095 transitions. [2020-10-29 07:19:48,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:19:48,598 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 203 [2020-10-29 07:19:48,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:19:48,709 INFO L225 Difference]: With dead ends: 45387 [2020-10-29 07:19:48,709 INFO L226 Difference]: Without dead ends: 27629 [2020-10-29 07:19:48,759 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:19:48,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27629 states. [2020-10-29 07:19:49,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27629 to 27306. [2020-10-29 07:19:49,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27306 states. [2020-10-29 07:19:49,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27306 states to 27306 states and 35921 transitions. [2020-10-29 07:19:49,516 INFO L78 Accepts]: Start accepts. Automaton has 27306 states and 35921 transitions. Word has length 203 [2020-10-29 07:19:49,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:19:49,517 INFO L481 AbstractCegarLoop]: Abstraction has 27306 states and 35921 transitions. [2020-10-29 07:19:49,517 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:19:49,517 INFO L276 IsEmpty]: Start isEmpty. Operand 27306 states and 35921 transitions. [2020-10-29 07:19:49,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-10-29 07:19:49,522 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:19:49,522 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:19:49,522 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 07:19:49,523 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:19:49,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:19:49,523 INFO L82 PathProgramCache]: Analyzing trace with hash 787272928, now seen corresponding path program 1 times [2020-10-29 07:19:49,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:19:49,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [751327409] [2020-10-29 07:19:49,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:19:49,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:19:49,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:19:49,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:19:50,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:19:50,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:19:51,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:19:51,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 259 [2020-10-29 07:19:51,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:19:51,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2269 [2020-10-29 07:19:51,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:19:51,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:19:51,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:19:51,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:19:51,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 227 [2020-10-29 07:19:51,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:19:52,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:19:52,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:19:52,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:19:52,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:19:52,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:19:52,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:19:52,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 07:19:52,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:19:52,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:19:52,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:19:52,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:19:52,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:19:52,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:19:52,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:19:52,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:19:52,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:19:52,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:19:52,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:19:52,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 07:19:52,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:19:52,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 486 [2020-10-29 07:19:52,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:19:52,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:19:52,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:19:52,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:19:52,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-29 07:19:52,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:19:52,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-29 07:19:52,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:19:52,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:19:52,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:19:52,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-29 07:19:52,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:19:52,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-29 07:19:52,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:19:52,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:19:52,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:19:52,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:19:52,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-29 07:19:52,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:19:52,991 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 120 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 07:19:52,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [751327409] [2020-10-29 07:19:52,992 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:19:52,992 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:19:52,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312324919] [2020-10-29 07:19:52,993 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:19:52,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:19:52,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:19:52,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:19:52,995 INFO L87 Difference]: Start difference. First operand 27306 states and 35921 transitions. Second operand 7 states. [2020-10-29 07:20:18,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:20:18,995 INFO L93 Difference]: Finished difference Result 72262 states and 103323 transitions. [2020-10-29 07:20:18,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:20:18,997 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 245 [2020-10-29 07:20:18,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:20:19,208 INFO L225 Difference]: With dead ends: 72262 [2020-10-29 07:20:19,208 INFO L226 Difference]: Without dead ends: 45765 [2020-10-29 07:20:19,275 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:20:19,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45765 states. [2020-10-29 07:20:20,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45765 to 44570. [2020-10-29 07:20:20,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44570 states. [2020-10-29 07:20:20,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44570 states to 44570 states and 58635 transitions. [2020-10-29 07:20:20,554 INFO L78 Accepts]: Start accepts. Automaton has 44570 states and 58635 transitions. Word has length 245 [2020-10-29 07:20:20,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:20:20,555 INFO L481 AbstractCegarLoop]: Abstraction has 44570 states and 58635 transitions. [2020-10-29 07:20:20,555 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:20:20,556 INFO L276 IsEmpty]: Start isEmpty. Operand 44570 states and 58635 transitions. [2020-10-29 07:20:20,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-10-29 07:20:20,570 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:20:20,570 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:20:20,570 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 07:20:20,571 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:20:20,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:20:20,572 INFO L82 PathProgramCache]: Analyzing trace with hash 1289677145, now seen corresponding path program 1 times [2020-10-29 07:20:20,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:20:20,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1471777442] [2020-10-29 07:20:20,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:20:20,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:20:20,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:20:21,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:20:21,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:20:22,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:20:23,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:20:25,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:20:25,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 262 [2020-10-29 07:20:25,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 07:20:25,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4539 [2020-10-29 07:20:25,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:20:25,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:20:25,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 07:20:25,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:20:25,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 253 [2020-10-29 07:20:25,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:20:25,440 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 07:20:25,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:20:25,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:20:25,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:20:25,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:20:25,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:20:25,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:20:25,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 07:20:25,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:20:25,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:20:25,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:20:25,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:20:25,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:20:25,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:20:25,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:20:25,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:20:25,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:20:25,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:20:25,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:20:25,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 07:20:25,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:20:25,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 310 [2020-10-29 07:20:25,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:20:25,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:20:25,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:20:25,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:20:25,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-29 07:20:25,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:20:25,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-29 07:20:25,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:20:25,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:20:26,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:20:26,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:20:26,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-29 07:20:26,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:20:26,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 285 [2020-10-29 07:20:26,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:20:26,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:20:26,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:20:26,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:20:26,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 07:20:26,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:20:26,349 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 28 proven. 11 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-29 07:20:26,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1471777442] [2020-10-29 07:20:26,350 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:20:26,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:20:26,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947503479] [2020-10-29 07:20:26,351 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:20:26,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:20:26,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:20:26,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:20:26,352 INFO L87 Difference]: Start difference. First operand 44570 states and 58635 transitions. Second operand 7 states. [2020-10-29 07:20:26,541 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-29 07:20:27,240 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 07:20:27,727 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-10-29 07:20:29,391 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 74