/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_label43.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 12:24:14,317 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 12:24:14,320 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 12:24:14,366 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 12:24:14,366 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 12:24:14,368 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 12:24:14,371 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 12:24:14,374 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 12:24:14,378 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 12:24:14,380 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 12:24:14,382 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 12:24:14,384 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 12:24:14,385 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 12:24:14,386 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 12:24:14,388 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 12:24:14,390 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 12:24:14,392 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 12:24:14,393 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 12:24:14,399 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 12:24:14,425 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 12:24:14,433 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 12:24:14,443 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 12:24:14,448 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 12:24:14,453 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 12:24:14,462 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 12:24:14,462 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 12:24:14,463 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 12:24:14,464 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 12:24:14,465 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 12:24:14,467 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 12:24:14,467 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 12:24:14,469 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 12:24:14,470 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 12:24:14,472 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 12:24:14,473 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 12:24:14,474 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 12:24:14,475 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 12:24:14,475 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 12:24:14,475 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 12:24:14,477 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 12:24:14,478 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 12:24:14,480 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 12:24:14,512 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 12:24:14,512 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 12:24:14,514 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 12:24:14,515 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 12:24:14,515 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 12:24:14,516 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 12:24:14,516 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 12:24:14,516 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 12:24:14,516 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 12:24:14,516 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 12:24:14,517 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 12:24:14,517 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 12:24:14,517 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 12:24:14,517 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 12:24:14,518 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 12:24:14,518 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 12:24:14,518 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 12:24:14,518 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 12:24:14,519 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 12:24:14,519 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 12:24:14,519 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 12:24:14,519 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:24:14,520 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 12:24:14,520 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 12:24:14,520 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 12:24:14,520 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 12:24:14,521 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 12:24:14,521 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 12:24:14,521 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 12:24:14,521 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 12:24:15,015 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 12:24:15,080 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 12:24:15,085 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 12:24:15,087 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 12:24:15,089 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 12:24:15,090 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label43.c [2020-10-28 12:24:15,212 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bfe1b9e5c/0e6a992f692542f5b472c96e86c53167/FLAG9f40e6e0c [2020-10-28 12:24:16,403 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 12:24:16,404 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label43.c [2020-10-28 12:24:16,458 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bfe1b9e5c/0e6a992f692542f5b472c96e86c53167/FLAG9f40e6e0c [2020-10-28 12:24:16,738 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bfe1b9e5c/0e6a992f692542f5b472c96e86c53167 [2020-10-28 12:24:16,743 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 12:24:16,750 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 12:24:16,752 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 12:24:16,753 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 12:24:16,758 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 12:24:16,760 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:24:16" (1/1) ... [2020-10-28 12:24:16,765 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a47a54e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:24:16, skipping insertion in model container [2020-10-28 12:24:16,765 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:24:16" (1/1) ... [2020-10-28 12:24:16,776 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 12:24:16,927 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 12:24:18,280 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:24:18,355 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 12:24:19,066 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:24:19,099 INFO L208 MainTranslator]: Completed translation [2020-10-28 12:24:19,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:24:19 WrapperNode [2020-10-28 12:24:19,100 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 12:24:19,101 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 12:24:19,101 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 12:24:19,101 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 12:24:19,117 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:24:19" (1/1) ... [2020-10-28 12:24:19,117 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:24:19" (1/1) ... [2020-10-28 12:24:19,190 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:24:19" (1/1) ... [2020-10-28 12:24:19,190 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:24:19" (1/1) ... [2020-10-28 12:24:19,308 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:24:19" (1/1) ... [2020-10-28 12:24:19,346 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:24:19" (1/1) ... [2020-10-28 12:24:19,383 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:24:19" (1/1) ... [2020-10-28 12:24:19,437 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 12:24:19,439 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 12:24:19,439 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 12:24:19,439 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 12:24:19,440 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:24:19" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:24:19,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 12:24:19,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 12:24:19,530 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 12:24:19,531 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 12:24:19,531 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 12:24:19,532 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 12:24:19,532 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-28 12:24:19,532 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 12:24:19,533 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 12:24:19,533 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 12:24:19,534 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 12:24:19,534 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-28 12:24:19,534 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 12:24:19,534 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 12:24:19,534 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 12:24:19,535 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 12:24:19,535 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 12:24:19,536 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 12:24:19,536 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 12:24:19,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 12:24:19,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 12:24:19,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 12:24:19,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 12:24:19,536 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 12:24:19,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 12:24:25,416 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 12:24:25,416 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 12:24:25,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:24:25 BoogieIcfgContainer [2020-10-28 12:24:25,421 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 12:24:25,426 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 12:24:25,427 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 12:24:25,430 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 12:24:25,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:24:16" (1/3) ... [2020-10-28 12:24:25,432 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d79f9da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:24:25, skipping insertion in model container [2020-10-28 12:24:25,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:24:19" (2/3) ... [2020-10-28 12:24:25,433 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d79f9da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:24:25, skipping insertion in model container [2020-10-28 12:24:25,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:24:25" (3/3) ... [2020-10-28 12:24:25,436 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label43.c [2020-10-28 12:24:25,450 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 12:24:25,457 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 12:24:25,472 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 12:24:25,525 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 12:24:25,525 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 12:24:25,525 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 12:24:25,525 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 12:24:25,526 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 12:24:25,526 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 12:24:25,526 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 12:24:25,526 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 12:24:25,575 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states. [2020-10-28 12:24:25,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-28 12:24:25,586 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:24:25,587 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] [2020-10-28 12:24:25,588 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:24:25,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:24:25,598 INFO L82 PathProgramCache]: Analyzing trace with hash -360488676, now seen corresponding path program 1 times [2020-10-28 12:24:25,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:24:25,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1170704276] [2020-10-28 12:24:25,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:24:25,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:24:25,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:26,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:24:26,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-28 12:24:26,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:24:26,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 797 [2020-10-28 12:24:26,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:24:26,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:24:26,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:24:26,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:24:26,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-28 12:24:26,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 12:24:26,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:24:26,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:24:26,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:26,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:24:26,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:24:26,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:24:26,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 12:24:26,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:24:26,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:24:26,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:24:26,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:24:26,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:24:26,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:24:26,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:24:26,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1170704276] [2020-10-28 12:24:26,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:24:26,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 12:24:26,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067728360] [2020-10-28 12:24:26,991 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 12:24:26,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:24:27,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 12:24:27,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 12:24:27,017 INFO L87 Difference]: Start difference. First operand 843 states. Second operand 4 states. [2020-10-28 12:24:38,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:24:38,514 INFO L93 Difference]: Finished difference Result 2476 states and 4742 transitions. [2020-10-28 12:24:38,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:24:38,518 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 48 [2020-10-28 12:24:38,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:24:38,551 INFO L225 Difference]: With dead ends: 2476 [2020-10-28 12:24:38,551 INFO L226 Difference]: Without dead ends: 1569 [2020-10-28 12:24:38,565 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:24:38,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2020-10-28 12:24:38,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1554. [2020-10-28 12:24:38,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1554 states. [2020-10-28 12:24:38,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 2522 transitions. [2020-10-28 12:24:38,752 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 2522 transitions. Word has length 48 [2020-10-28 12:24:38,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:24:38,755 INFO L481 AbstractCegarLoop]: Abstraction has 1554 states and 2522 transitions. [2020-10-28 12:24:38,756 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 12:24:38,756 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 2522 transitions. [2020-10-28 12:24:38,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-28 12:24:38,772 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:24:38,772 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:24:38,773 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 12:24:38,774 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:24:38,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:24:38,775 INFO L82 PathProgramCache]: Analyzing trace with hash 1809300378, now seen corresponding path program 1 times [2020-10-28 12:24:38,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:24:38,776 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [802124561] [2020-10-28 12:24:38,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:24:38,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:24:38,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:38,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:39,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:39,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:24:39,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-28 12:24:39,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:24:39,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 942 [2020-10-28 12:24:39,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:24:39,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:24:39,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:24:39,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-28 12:24:39,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-28 12:24:39,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-28 12:24:39,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:24:39,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:24:39,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:39,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:24:39,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:24:39,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:24:39,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 12:24:39,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:24:39,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:24:39,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:24:39,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:24:39,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:24:39,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 12:24:40,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:24:40,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:24:40,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:40,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:24:40,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 12:24:40,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:24:40,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-28 12:24:40,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:24:40,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:24:40,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:24:40,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:24:40,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 12:24:40,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:24:40,188 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 39 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:24:40,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [802124561] [2020-10-28 12:24:40,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:24:40,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:24:40,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188598451] [2020-10-28 12:24:40,191 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:24:40,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:24:40,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:24:40,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:24:40,194 INFO L87 Difference]: Start difference. First operand 1554 states and 2522 transitions. Second operand 5 states. [2020-10-28 12:24:50,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:24:50,858 INFO L93 Difference]: Finished difference Result 4673 states and 7650 transitions. [2020-10-28 12:24:50,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:24:50,859 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 123 [2020-10-28 12:24:50,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:24:50,883 INFO L225 Difference]: With dead ends: 4673 [2020-10-28 12:24:50,884 INFO L226 Difference]: Without dead ends: 3125 [2020-10-28 12:24:50,889 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:24:50,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3125 states. [2020-10-28 12:24:51,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3125 to 3112. [2020-10-28 12:24:51,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3112 states. [2020-10-28 12:24:51,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3112 states to 3112 states and 4442 transitions. [2020-10-28 12:24:51,021 INFO L78 Accepts]: Start accepts. Automaton has 3112 states and 4442 transitions. Word has length 123 [2020-10-28 12:24:51,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:24:51,024 INFO L481 AbstractCegarLoop]: Abstraction has 3112 states and 4442 transitions. [2020-10-28 12:24:51,024 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:24:51,025 INFO L276 IsEmpty]: Start isEmpty. Operand 3112 states and 4442 transitions. [2020-10-28 12:24:51,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-28 12:24:51,031 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:24:51,032 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:24:51,032 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 12:24:51,032 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:24:51,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:24:51,033 INFO L82 PathProgramCache]: Analyzing trace with hash -1956670702, now seen corresponding path program 1 times [2020-10-28 12:24:51,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:24:51,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [896303211] [2020-10-28 12:24:51,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:24:51,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:24:51,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:51,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:52,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:24:52,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-28 12:24:52,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:24:52,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1114 [2020-10-28 12:24:52,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:24:52,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:24:52,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:24:52,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:24:52,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-28 12:24:52,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:24:52,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:24:52,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:24:52,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:52,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:24:52,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:24:52,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:24:52,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 12:24:52,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:24:52,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:24:52,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:24:52,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:24:52,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:24:52,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:24:52,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:24:52,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:24:52,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:52,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:24:52,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-28 12:24:52,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:24:52,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-28 12:24:52,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:24:52,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:24:52,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:24:52,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:24:52,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-28 12:24:52,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:24:52,778 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:24:52,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [896303211] [2020-10-28 12:24:52,780 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:24:52,780 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:24:52,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188424453] [2020-10-28 12:24:52,783 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:24:52,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:24:52,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:24:52,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:24:52,785 INFO L87 Difference]: Start difference. First operand 3112 states and 4442 transitions. Second operand 7 states. [2020-10-28 12:25:07,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:25:07,882 INFO L93 Difference]: Finished difference Result 9472 states and 13710 transitions. [2020-10-28 12:25:07,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:25:07,886 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 127 [2020-10-28 12:25:07,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:25:07,924 INFO L225 Difference]: With dead ends: 9472 [2020-10-28 12:25:07,925 INFO L226 Difference]: Without dead ends: 6366 [2020-10-28 12:25:07,934 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-28 12:25:07,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6366 states. [2020-10-28 12:25:08,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6366 to 6267. [2020-10-28 12:25:08,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6267 states. [2020-10-28 12:25:08,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6267 states to 6267 states and 8429 transitions. [2020-10-28 12:25:08,154 INFO L78 Accepts]: Start accepts. Automaton has 6267 states and 8429 transitions. Word has length 127 [2020-10-28 12:25:08,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:25:08,155 INFO L481 AbstractCegarLoop]: Abstraction has 6267 states and 8429 transitions. [2020-10-28 12:25:08,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:25:08,155 INFO L276 IsEmpty]: Start isEmpty. Operand 6267 states and 8429 transitions. [2020-10-28 12:25:08,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-28 12:25:08,159 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:25:08,159 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:25:08,159 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 12:25:08,159 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:25:08,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:25:08,160 INFO L82 PathProgramCache]: Analyzing trace with hash -1353799026, now seen corresponding path program 1 times [2020-10-28 12:25:08,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:25:08,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1356066841] [2020-10-28 12:25:08,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:25:08,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:25:08,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:08,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:09,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:25:09,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-28 12:25:09,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:25:09,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1414 [2020-10-28 12:25:09,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:25:09,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:25:09,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:25:09,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:25:09,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-28 12:25:09,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:25:09,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:25:09,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:25:09,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:09,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:25:09,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:25:09,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:25:09,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 12:25:09,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:25:09,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:25:09,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:25:09,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:25:09,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:25:09,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:25:09,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:25:09,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:25:09,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:10,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:25:10,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-28 12:25:10,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:25:10,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-10-28 12:25:10,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:25:10,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:25:10,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:25:10,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:25:10,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-28 12:25:10,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:25:10,329 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:25:10,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1356066841] [2020-10-28 12:25:10,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:25:10,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:25:10,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946160024] [2020-10-28 12:25:10,332 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:25:10,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:25:10,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:25:10,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:25:10,339 INFO L87 Difference]: Start difference. First operand 6267 states and 8429 transitions. Second operand 7 states. [2020-10-28 12:25:25,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:25:25,382 INFO L93 Difference]: Finished difference Result 19063 states and 26345 transitions. [2020-10-28 12:25:25,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:25:25,383 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 161 [2020-10-28 12:25:25,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:25:25,458 INFO L225 Difference]: With dead ends: 19063 [2020-10-28 12:25:25,459 INFO L226 Difference]: Without dead ends: 12802 [2020-10-28 12:25:25,476 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:25:25,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12802 states. [2020-10-28 12:25:25,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12802 to 12785. [2020-10-28 12:25:25,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12785 states. [2020-10-28 12:25:25,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12785 states to 12785 states and 17069 transitions. [2020-10-28 12:25:25,844 INFO L78 Accepts]: Start accepts. Automaton has 12785 states and 17069 transitions. Word has length 161 [2020-10-28 12:25:25,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:25:25,845 INFO L481 AbstractCegarLoop]: Abstraction has 12785 states and 17069 transitions. [2020-10-28 12:25:25,845 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:25:25,845 INFO L276 IsEmpty]: Start isEmpty. Operand 12785 states and 17069 transitions. [2020-10-28 12:25:25,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2020-10-28 12:25:25,851 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:25:25,851 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:25:25,852 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 12:25:25,852 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:25:25,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:25:25,852 INFO L82 PathProgramCache]: Analyzing trace with hash 458607466, now seen corresponding path program 1 times [2020-10-28 12:25:25,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:25:25,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1626110453] [2020-10-28 12:25:25,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:25:25,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:25:25,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:26,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:26,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:27,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:25:27,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 257 [2020-10-28 12:25:27,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:25:27,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1485 [2020-10-28 12:25:27,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:25:27,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:25:27,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:25:27,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-28 12:25:27,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-28 12:25:27,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:25:27,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:25:27,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:25:27,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:27,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:25:27,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:25:27,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:25:27,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 12:25:27,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:25:27,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:25:27,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:25:27,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:25:27,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:25:27,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:25:27,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:25:27,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:25:27,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:27,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:25:27,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 12:25:27,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:25:27,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-28 12:25:27,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:25:27,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:25:27,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:25:27,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:25:27,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 12:25:27,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 12:25:27,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-28 12:25:27,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:25:27,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:28,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:25:28,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-28 12:25:28,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:25:28,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 302 [2020-10-28 12:25:28,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:25:28,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:25:28,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:25:28,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:25:28,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-28 12:25:28,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 12:25:28,355 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 152 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:25:28,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1626110453] [2020-10-28 12:25:28,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:25:28,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 12:25:28,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078964284] [2020-10-28 12:25:28,357 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:25:28,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:25:28,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:25:28,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:25:28,358 INFO L87 Difference]: Start difference. First operand 12785 states and 17069 transitions. Second operand 8 states. [2020-10-28 12:25:50,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:25:50,637 INFO L93 Difference]: Finished difference Result 32509 states and 45459 transitions. [2020-10-28 12:25:50,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 12:25:50,639 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 243 [2020-10-28 12:25:50,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:25:50,728 INFO L225 Difference]: With dead ends: 32509 [2020-10-28 12:25:50,728 INFO L226 Difference]: Without dead ends: 19730 [2020-10-28 12:25:50,770 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-28 12:25:50,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19730 states. [2020-10-28 12:25:51,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19730 to 19638. [2020-10-28 12:25:51,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19638 states. [2020-10-28 12:25:51,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19638 states to 19638 states and 26013 transitions. [2020-10-28 12:25:51,340 INFO L78 Accepts]: Start accepts. Automaton has 19638 states and 26013 transitions. Word has length 243 [2020-10-28 12:25:51,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:25:51,340 INFO L481 AbstractCegarLoop]: Abstraction has 19638 states and 26013 transitions. [2020-10-28 12:25:51,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:25:51,341 INFO L276 IsEmpty]: Start isEmpty. Operand 19638 states and 26013 transitions. [2020-10-28 12:25:51,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-10-28 12:25:51,347 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:25:51,347 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:25:51,348 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 12:25:51,348 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:25:51,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:25:51,349 INFO L82 PathProgramCache]: Analyzing trace with hash 2078133730, now seen corresponding path program 1 times [2020-10-28 12:25:51,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:25:51,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1665304488] [2020-10-28 12:25:51,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:25:51,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:25:51,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:51,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:52,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:53,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:25:53,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 261 [2020-10-28 12:25:53,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:25:53,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1765 [2020-10-28 12:25:53,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:25:53,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:25:53,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:25:53,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-28 12:25:53,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-28 12:25:53,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:25:53,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:25:53,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:25:53,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:53,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:25:53,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:25:53,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:25:53,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 12:25:53,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:25:53,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:25:53,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:25:53,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:25:53,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:25:53,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:25:53,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:25:53,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:25:53,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:53,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:25:53,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 12:25:53,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:25:53,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-28 12:25:53,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:25:53,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:25:53,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:25:53,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:25:53,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 12:25:53,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:25:53,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-28 12:25:53,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:25:53,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:53,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:25:53,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-28 12:25:53,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:25:53,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-10-28 12:25:53,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:25:53,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:25:53,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:25:53,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:25:53,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 12:25:53,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:25:54,039 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 152 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:25:54,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1665304488] [2020-10-28 12:25:54,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:25:54,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:25:54,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459124584] [2020-10-28 12:25:54,041 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:25:54,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:25:54,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:25:54,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:25:54,043 INFO L87 Difference]: Start difference. First operand 19638 states and 26013 transitions. Second operand 7 states. [2020-10-28 12:26:18,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:26:18,230 INFO L93 Difference]: Finished difference Result 54472 states and 78751 transitions. [2020-10-28 12:26:18,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:26:18,236 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 247 [2020-10-28 12:26:18,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:26:18,400 INFO L225 Difference]: With dead ends: 54472 [2020-10-28 12:26:18,400 INFO L226 Difference]: Without dead ends: 30813 [2020-10-28 12:26:18,478 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 1 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 12:26:18,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30813 states. [2020-10-28 12:26:19,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30813 to 30330. [2020-10-28 12:26:19,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30330 states. [2020-10-28 12:26:19,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30330 states to 30330 states and 38144 transitions. [2020-10-28 12:26:19,639 INFO L78 Accepts]: Start accepts. Automaton has 30330 states and 38144 transitions. Word has length 247 [2020-10-28 12:26:19,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:26:19,640 INFO L481 AbstractCegarLoop]: Abstraction has 30330 states and 38144 transitions. [2020-10-28 12:26:19,640 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:26:19,640 INFO L276 IsEmpty]: Start isEmpty. Operand 30330 states and 38144 transitions. [2020-10-28 12:26:19,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-10-28 12:26:19,645 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:26:19,645 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:26:19,646 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 12:26:19,646 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:26:19,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:26:19,647 INFO L82 PathProgramCache]: Analyzing trace with hash 901785488, now seen corresponding path program 1 times [2020-10-28 12:26:19,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:26:19,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2030347549] [2020-10-28 12:26:19,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:26:19,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:26:19,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:20,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:21,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:26:21,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-10-28 12:26:21,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:26:21,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2011 [2020-10-28 12:26:21,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:26:21,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:26:21,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:26:21,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:26:21,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 204 [2020-10-28 12:26:21,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:26:21,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:26:21,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:26:21,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:21,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:26:21,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:26:21,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:26:21,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 12:26:21,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:26:21,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:26:21,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:26:21,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:26:21,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:26:21,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:26:21,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:26:22,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:26:22,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:22,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:26:22,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-28 12:26:22,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:26:22,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 358 [2020-10-28 12:26:22,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:26:22,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:26:22,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:26:22,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:26:22,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 199 [2020-10-28 12:26:22,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:26:22,629 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:26:22,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2030347549] [2020-10-28 12:26:22,630 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:26:22,630 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:26:22,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714554800] [2020-10-28 12:26:22,631 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:26:22,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:26:22,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:26:22,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:26:22,632 INFO L87 Difference]: Start difference. First operand 30330 states and 38144 transitions. Second operand 7 states. [2020-10-28 12:26:40,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:26:40,221 INFO L93 Difference]: Finished difference Result 73631 states and 96800 transitions. [2020-10-28 12:26:40,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:26:40,223 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 246 [2020-10-28 12:26:40,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:26:40,372 INFO L225 Difference]: With dead ends: 73631 [2020-10-28 12:26:40,372 INFO L226 Difference]: Without dead ends: 43311 [2020-10-28 12:26:40,422 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:26:40,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43311 states. [2020-10-28 12:26:41,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43311 to 42309. [2020-10-28 12:26:41,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42309 states. [2020-10-28 12:26:41,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42309 states to 42309 states and 52110 transitions. [2020-10-28 12:26:41,800 INFO L78 Accepts]: Start accepts. Automaton has 42309 states and 52110 transitions. Word has length 246 [2020-10-28 12:26:41,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:26:41,801 INFO L481 AbstractCegarLoop]: Abstraction has 42309 states and 52110 transitions. [2020-10-28 12:26:41,801 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:26:41,801 INFO L276 IsEmpty]: Start isEmpty. Operand 42309 states and 52110 transitions. [2020-10-28 12:26:41,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2020-10-28 12:26:41,806 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:26:41,807 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:26:41,807 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 12:26:41,807 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:26:41,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:26:41,808 INFO L82 PathProgramCache]: Analyzing trace with hash -896924468, now seen corresponding path program 1 times [2020-10-28 12:26:41,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:26:41,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2068927978] [2020-10-28 12:26:41,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:26:41,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:26:42,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:42,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:43,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:43,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:26:43,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 296 [2020-10-28 12:26:43,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:26:43,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1662 [2020-10-28 12:26:43,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:26:43,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:26:43,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:26:43,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-28 12:26:43,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-28 12:26:43,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:26:43,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:26:43,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:26:43,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:43,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:26:43,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:26:43,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:26:43,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 12:26:43,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:26:43,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:26:43,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:26:43,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:26:43,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:26:43,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:26:43,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:26:43,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:26:43,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:44,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:26:44,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-28 12:26:44,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:26:44,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-10-28 12:26:44,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:26:44,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:26:44,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:26:44,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:26:44,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-28 12:26:44,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:26:44,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-28 12:26:44,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:26:44,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:44,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:26:44,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 12:26:44,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:26:44,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-28 12:26:44,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:26:44,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:26:44,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:26:44,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:26:44,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-28 12:26:44,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:26:44,562 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 124 proven. 40 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 12:26:44,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2068927978] [2020-10-28 12:26:44,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:26:44,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 12:26:44,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810686349] [2020-10-28 12:26:44,564 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 12:26:44,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:26:44,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 12:26:44,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:26:44,565 INFO L87 Difference]: Start difference. First operand 42309 states and 52110 transitions. Second operand 6 states. [2020-10-28 12:27:05,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:27:05,549 INFO L93 Difference]: Finished difference Result 104036 states and 133520 transitions. [2020-10-28 12:27:05,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 12:27:05,551 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 282 [2020-10-28 12:27:05,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:27:05,760 INFO L225 Difference]: With dead ends: 104036 [2020-10-28 12:27:05,761 INFO L226 Difference]: Without dead ends: 62500 [2020-10-28 12:27:05,828 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:27:05,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62500 states. [2020-10-28 12:27:07,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62500 to 61542. [2020-10-28 12:27:07,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61542 states. [2020-10-28 12:27:07,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61542 states to 61542 states and 77713 transitions. [2020-10-28 12:27:07,771 INFO L78 Accepts]: Start accepts. Automaton has 61542 states and 77713 transitions. Word has length 282 [2020-10-28 12:27:07,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:27:07,772 INFO L481 AbstractCegarLoop]: Abstraction has 61542 states and 77713 transitions. [2020-10-28 12:27:07,772 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 12:27:07,772 INFO L276 IsEmpty]: Start isEmpty. Operand 61542 states and 77713 transitions. [2020-10-28 12:27:07,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2020-10-28 12:27:07,778 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:27:07,779 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:27:07,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 12:27:07,779 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:27:07,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:27:07,780 INFO L82 PathProgramCache]: Analyzing trace with hash 1271333972, now seen corresponding path program 1 times [2020-10-28 12:27:07,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:27:07,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [761582371] [2020-10-28 12:27:07,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:27:07,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:27:07,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:08,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:08,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:10,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:27:10,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 300 [2020-10-28 12:27:10,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:27:10,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2687 [2020-10-28 12:27:10,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:27:10,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:27:10,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:27:10,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-28 12:27:10,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-28 12:27:10,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:27:10,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:27:10,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:27:10,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:10,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:27:10,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:27:10,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:27:10,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:27:10,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:27:10,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:27:10,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:27:10,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:27:10,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:27:10,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:27:10,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:27:10,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:27:10,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:10,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:27:10,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-28 12:27:10,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:27:10,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-28 12:27:10,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:27:10,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:27:10,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:27:10,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:27:10,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-28 12:27:10,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:27:11,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-28 12:27:11,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:27:11,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:11,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:11,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:27:11,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 12:27:11,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:27:11,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-28 12:27:11,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:27:11,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:27:11,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:27:11,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:27:11,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-28 12:27:11,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:27:11,364 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 78 proven. 2 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2020-10-28 12:27:11,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [761582371] [2020-10-28 12:27:11,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:27:11,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:27:11,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911955136] [2020-10-28 12:27:11,367 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:27:11,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:27:11,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:27:11,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:27:11,377 INFO L87 Difference]: Start difference. First operand 61542 states and 77713 transitions. Second operand 5 states. [2020-10-28 12:27:12,686 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 12:27:33,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:27:33,955 INFO L93 Difference]: Finished difference Result 150252 states and 193967 transitions. [2020-10-28 12:27:33,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:27:33,957 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 286 [2020-10-28 12:27:33,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:27:34,380 INFO L225 Difference]: With dead ends: 150252 [2020-10-28 12:27:34,381 INFO L226 Difference]: Without dead ends: 89483 [2020-10-28 12:27:34,476 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:27:34,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89483 states. [2020-10-28 12:27:36,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89483 to 87136. [2020-10-28 12:27:36,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87136 states. [2020-10-28 12:27:37,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87136 states to 87136 states and 111450 transitions. [2020-10-28 12:27:37,006 INFO L78 Accepts]: Start accepts. Automaton has 87136 states and 111450 transitions. Word has length 286 [2020-10-28 12:27:37,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:27:37,006 INFO L481 AbstractCegarLoop]: Abstraction has 87136 states and 111450 transitions. [2020-10-28 12:27:37,006 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:27:37,006 INFO L276 IsEmpty]: Start isEmpty. Operand 87136 states and 111450 transitions. [2020-10-28 12:27:37,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2020-10-28 12:27:37,014 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:27:37,014 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:27:37,015 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 12:27:37,015 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:27:37,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:27:37,016 INFO L82 PathProgramCache]: Analyzing trace with hash 197188626, now seen corresponding path program 1 times [2020-10-28 12:27:37,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:27:37,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2127480512] [2020-10-28 12:27:37,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:27:37,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:27:37,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:37,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:38,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:39,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:27:39,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 301 [2020-10-28 12:27:39,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:27:39,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2450 [2020-10-28 12:27:39,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:27:39,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:27:39,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:27:39,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-28 12:27:39,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-28 12:27:39,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:27:39,791 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 12:27:39,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:27:39,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:27:39,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:39,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:27:39,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:27:39,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:27:39,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:27:39,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:27:39,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:27:39,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:27:39,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:27:39,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:27:39,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:27:39,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:27:39,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:27:39,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:40,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:27:40,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-28 12:27:40,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:27:40,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-28 12:27:40,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:27:40,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:27:40,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:27:40,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:27:40,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-28 12:27:40,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:27:40,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-28 12:27:40,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:27:40,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:40,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:40,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:27:40,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-28 12:27:40,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:27:40,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 318 [2020-10-28 12:27:40,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:27:40,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:27:40,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:27:40,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:27:40,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-28 12:27:40,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:27:40,672 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 125 proven. 40 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 12:27:40,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2127480512] [2020-10-28 12:27:40,672 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:27:40,673 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:27:40,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624908469] [2020-10-28 12:27:40,674 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:27:40,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:27:40,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:27:40,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:27:40,675 INFO L87 Difference]: Start difference. First operand 87136 states and 111450 transitions. Second operand 7 states. [2020-10-28 12:27:42,568 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 12:27:48,093 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 66