/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/Problem05_label23.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 10:44:17,430 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 10:44:17,434 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 10:44:17,493 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 10:44:17,493 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 10:44:17,501 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 10:44:17,503 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 10:44:17,508 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 10:44:17,511 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 10:44:17,518 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 10:44:17,520 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 10:44:17,521 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 10:44:17,521 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 10:44:17,524 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 10:44:17,527 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 10:44:17,529 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 10:44:17,531 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 10:44:17,544 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 10:44:17,546 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 10:44:17,548 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 10:44:17,550 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 10:44:17,551 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 10:44:17,553 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 10:44:17,553 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 10:44:17,556 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 10:44:17,557 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 10:44:17,557 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 10:44:17,558 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 10:44:17,559 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 10:44:17,560 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 10:44:17,560 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 10:44:17,561 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 10:44:17,562 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 10:44:17,563 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 10:44:17,564 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 10:44:17,564 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 10:44:17,565 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 10:44:17,565 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 10:44:17,566 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 10:44:17,567 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 10:44:17,567 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 10:44:17,568 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 10:44:17,593 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 10:44:17,594 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 10:44:17,595 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 10:44:17,595 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 10:44:17,596 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 10:44:17,596 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 10:44:17,596 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 10:44:17,596 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 10:44:17,597 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 10:44:17,597 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 10:44:17,597 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 10:44:17,597 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 10:44:17,598 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 10:44:17,598 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 10:44:17,598 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 10:44:17,598 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 10:44:17,598 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 10:44:17,599 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 10:44:17,599 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 10:44:17,599 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 10:44:17,599 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 10:44:17,599 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 10:44:17,600 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 10:44:17,600 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 10:44:17,600 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 10:44:17,600 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 10:44:17,600 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 10:44:17,601 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 10:44:17,601 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 10:44:17,601 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 10:44:17,948 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 10:44:17,976 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 10:44:17,978 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 10:44:17,980 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 10:44:17,981 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 10:44:17,982 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label23.c [2020-10-28 10:44:18,057 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d06a3fb24/c2fcc6e1414344a0906c4c738bf56ba5/FLAG5157af7b9 [2020-10-28 10:44:19,350 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 10:44:19,351 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label23.c [2020-10-28 10:44:19,389 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d06a3fb24/c2fcc6e1414344a0906c4c738bf56ba5/FLAG5157af7b9 [2020-10-28 10:44:19,620 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d06a3fb24/c2fcc6e1414344a0906c4c738bf56ba5 [2020-10-28 10:44:19,623 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 10:44:19,631 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 10:44:19,634 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 10:44:19,635 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 10:44:19,639 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 10:44:19,639 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:44:19" (1/1) ... [2020-10-28 10:44:19,644 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77bbee64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:44:19, skipping insertion in model container [2020-10-28 10:44:19,644 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:44:19" (1/1) ... [2020-10-28 10:44:19,653 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 10:44:19,881 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 10:44:22,298 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 10:44:22,310 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 10:44:23,543 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 10:44:23,609 INFO L208 MainTranslator]: Completed translation [2020-10-28 10:44:23,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:44:23 WrapperNode [2020-10-28 10:44:23,609 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 10:44:23,611 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 10:44:23,611 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 10:44:23,611 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 10:44:23,625 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:44:23" (1/1) ... [2020-10-28 10:44:23,625 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:44:23" (1/1) ... [2020-10-28 10:44:23,719 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:44:23" (1/1) ... [2020-10-28 10:44:23,719 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:44:23" (1/1) ... [2020-10-28 10:44:24,047 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:44:23" (1/1) ... [2020-10-28 10:44:24,156 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:44:23" (1/1) ... [2020-10-28 10:44:24,212 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:44:23" (1/1) ... [2020-10-28 10:44:24,288 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 10:44:24,291 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 10:44:24,291 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 10:44:24,291 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 10:44:24,292 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:44:23" (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 10:44:24,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 10:44:24,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 10:44:24,378 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 10:44:24,379 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 10:44:24,379 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 10:44:24,379 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 10:44:24,379 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-28 10:44:24,379 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-28 10:44:24,380 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-28 10:44:24,380 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2020-10-28 10:44:24,381 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2020-10-28 10:44:24,381 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 10:44:24,381 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 10:44:24,381 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 10:44:24,381 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 10:44:24,382 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-28 10:44:24,382 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-28 10:44:24,382 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-28 10:44:24,383 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2020-10-28 10:44:24,383 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2020-10-28 10:44:24,384 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 10:44:24,384 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 10:44:24,384 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 10:44:24,384 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 10:44:24,384 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 10:44:24,384 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 10:44:24,384 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 10:44:24,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 10:44:24,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 10:44:24,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 10:44:24,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 10:44:24,385 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 10:44:24,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 10:44:34,188 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 10:44:34,188 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 10:44:34,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:44:34 BoogieIcfgContainer [2020-10-28 10:44:34,195 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 10:44:34,200 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 10:44:34,200 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 10:44:34,204 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 10:44:34,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 10:44:19" (1/3) ... [2020-10-28 10:44:34,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61bfa063 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:44:34, skipping insertion in model container [2020-10-28 10:44:34,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:44:23" (2/3) ... [2020-10-28 10:44:34,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61bfa063 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:44:34, skipping insertion in model container [2020-10-28 10:44:34,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:44:34" (3/3) ... [2020-10-28 10:44:34,208 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label23.c [2020-10-28 10:44:34,220 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 10:44:34,227 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 10:44:34,240 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 10:44:34,286 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 10:44:34,287 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 10:44:34,287 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 10:44:34,287 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 10:44:34,287 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 10:44:34,287 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 10:44:34,287 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 10:44:34,288 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 10:44:34,350 INFO L276 IsEmpty]: Start isEmpty. Operand 2226 states. [2020-10-28 10:44:34,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1691 [2020-10-28 10:44:34,515 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:44:34,518 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:44:34,519 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:44:34,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:44:34,529 INFO L82 PathProgramCache]: Analyzing trace with hash 1739260591, now seen corresponding path program 1 times [2020-10-28 10:44:34,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:44:34,539 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [527698115] [2020-10-28 10:44:34,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:44:35,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:44:36,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:44:40,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:44:40,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1714 [2020-10-28 10:44:40,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:44:40,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5133 [2020-10-28 10:44:40,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:44:40,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:44:40,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-28 10:44:40,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:44:40,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1705 [2020-10-28 10:44:40,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 10:44:42,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:44:42,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:44:42,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:44:42,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:44:42,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:44:42,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:44:42,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 10:44:42,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:44:42,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:44:42,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:44:42,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:44:42,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:44:42,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:44:45,808 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 10:44:45,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [527698115] [2020-10-28 10:44:45,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:44:45,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 10:44:45,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61961318] [2020-10-28 10:44:45,820 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 10:44:45,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:44:45,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 10:44:45,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 10:44:45,837 INFO L87 Difference]: Start difference. First operand 2226 states. Second operand 4 states. [2020-10-28 10:45:07,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:45:07,864 INFO L93 Difference]: Finished difference Result 6316 states and 11857 transitions. [2020-10-28 10:45:07,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 10:45:07,866 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1690 [2020-10-28 10:45:07,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:45:07,930 INFO L225 Difference]: With dead ends: 6316 [2020-10-28 10:45:07,930 INFO L226 Difference]: Without dead ends: 4026 [2020-10-28 10:45:07,943 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 10:45:07,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4026 states. [2020-10-28 10:45:08,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4026 to 3997. [2020-10-28 10:45:08,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3997 states. [2020-10-28 10:45:08,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3997 states to 3997 states and 6428 transitions. [2020-10-28 10:45:08,157 INFO L78 Accepts]: Start accepts. Automaton has 3997 states and 6428 transitions. Word has length 1690 [2020-10-28 10:45:08,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:45:08,162 INFO L481 AbstractCegarLoop]: Abstraction has 3997 states and 6428 transitions. [2020-10-28 10:45:08,162 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 10:45:08,162 INFO L276 IsEmpty]: Start isEmpty. Operand 3997 states and 6428 transitions. [2020-10-28 10:45:08,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1700 [2020-10-28 10:45:08,304 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:45:08,306 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:45:08,306 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 10:45:08,306 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:45:08,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:45:08,308 INFO L82 PathProgramCache]: Analyzing trace with hash -641337941, now seen corresponding path program 1 times [2020-10-28 10:45:08,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:45:08,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [757412188] [2020-10-28 10:45:08,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:45:08,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:45:08,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:45:10,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:45:13,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:45:13,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1725 [2020-10-28 10:45:13,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:45:13,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-28 10:45:13,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:45:13,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:45:13,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:45:13,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:45:13,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 10:45:13,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:45:14,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:45:14,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:45:14,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:45:14,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:45:14,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:45:14,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:45:14,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 10:45:14,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:45:14,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:45:14,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:45:14,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:45:14,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:45:14,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:45:14,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:45:14,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:45:14,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:45:14,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:45:14,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 10:45:14,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:45:14,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 10:45:14,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:45:14,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:45:14,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:45:14,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:45:14,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 10:45:14,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:45:16,075 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:45:16,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [757412188] [2020-10-28 10:45:16,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:45:16,076 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 10:45:16,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125760223] [2020-10-28 10:45:16,080 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:45:16,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:45:16,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:45:16,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:45:16,081 INFO L87 Difference]: Start difference. First operand 3997 states and 6428 transitions. Second operand 7 states. [2020-10-28 10:45:45,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:45:45,919 INFO L93 Difference]: Finished difference Result 11832 states and 19175 transitions. [2020-10-28 10:45:45,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 10:45:45,919 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1699 [2020-10-28 10:45:45,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:45:45,963 INFO L225 Difference]: With dead ends: 11832 [2020-10-28 10:45:45,964 INFO L226 Difference]: Without dead ends: 7841 [2020-10-28 10:45:45,976 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 10:45:45,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7841 states. [2020-10-28 10:45:46,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7841 to 7661. [2020-10-28 10:45:46,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7661 states. [2020-10-28 10:45:46,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7661 states to 7661 states and 11091 transitions. [2020-10-28 10:45:46,200 INFO L78 Accepts]: Start accepts. Automaton has 7661 states and 11091 transitions. Word has length 1699 [2020-10-28 10:45:46,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:45:46,200 INFO L481 AbstractCegarLoop]: Abstraction has 7661 states and 11091 transitions. [2020-10-28 10:45:46,200 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:45:46,200 INFO L276 IsEmpty]: Start isEmpty. Operand 7661 states and 11091 transitions. [2020-10-28 10:45:46,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1702 [2020-10-28 10:45:46,243 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:45:46,244 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:45:46,245 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 10:45:46,245 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:45:46,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:45:46,246 INFO L82 PathProgramCache]: Analyzing trace with hash 197611943, now seen corresponding path program 1 times [2020-10-28 10:45:46,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:45:46,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [444898503] [2020-10-28 10:45:46,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:45:46,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:45:46,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:45:47,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:45:51,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:45:51,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1727 [2020-10-28 10:45:51,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:45:51,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 10:45:51,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:45:51,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:45:51,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:45:51,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:45:51,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 10:45:51,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:45:52,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:45:52,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:45:52,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:45:52,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:45:52,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:45:52,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:45:52,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 10:45:52,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:45:52,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:45:52,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:45:52,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:45:52,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:45:52,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:45:52,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:45:52,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:45:52,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:45:52,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:45:52,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 10:45:52,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:45:52,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 10:45:52,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:45:52,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:45:52,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:45:52,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:45:52,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 10:45:52,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:45:53,448 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:45:53,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [444898503] [2020-10-28 10:45:53,449 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:45:53,449 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 10:45:53,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833398531] [2020-10-28 10:45:53,451 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:45:53,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:45:53,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:45:53,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:45:53,452 INFO L87 Difference]: Start difference. First operand 7661 states and 11091 transitions. Second operand 7 states. [2020-10-28 10:46:20,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:46:20,859 INFO L93 Difference]: Finished difference Result 23140 states and 34229 transitions. [2020-10-28 10:46:20,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 10:46:20,861 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1701 [2020-10-28 10:46:20,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:46:20,948 INFO L225 Difference]: With dead ends: 23140 [2020-10-28 10:46:20,948 INFO L226 Difference]: Without dead ends: 15485 [2020-10-28 10:46:20,970 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-28 10:46:20,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15485 states. [2020-10-28 10:46:21,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15485 to 15165. [2020-10-28 10:46:21,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15165 states. [2020-10-28 10:46:21,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15165 states to 15165 states and 19744 transitions. [2020-10-28 10:46:21,402 INFO L78 Accepts]: Start accepts. Automaton has 15165 states and 19744 transitions. Word has length 1701 [2020-10-28 10:46:21,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:46:21,403 INFO L481 AbstractCegarLoop]: Abstraction has 15165 states and 19744 transitions. [2020-10-28 10:46:21,403 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:46:21,403 INFO L276 IsEmpty]: Start isEmpty. Operand 15165 states and 19744 transitions. [2020-10-28 10:46:21,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1713 [2020-10-28 10:46:21,481 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:46:21,482 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:46:21,482 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 10:46:21,483 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:46:21,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:46:21,484 INFO L82 PathProgramCache]: Analyzing trace with hash 184292848, now seen corresponding path program 1 times [2020-10-28 10:46:21,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:46:21,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1441082599] [2020-10-28 10:46:21,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:46:21,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:46:22,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:46:22,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:46:22,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:46:26,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:46:26,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1738 [2020-10-28 10:46:26,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:46:26,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5075 [2020-10-28 10:46:26,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:46:26,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:46:26,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:46:26,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:46:26,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 10:46:26,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:46:27,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:46:27,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:46:27,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:46:27,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:46:27,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:46:27,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:46:27,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 10:46:27,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:46:27,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:46:27,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:46:27,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:46:27,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:46:27,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:46:27,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:46:27,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:46:27,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:46:27,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:46:27,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-28 10:46:27,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:46:27,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-28 10:46:27,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:46:27,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:46:27,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:46:27,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:46:27,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 10:46:27,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:46:29,124 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:46:29,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1441082599] [2020-10-28 10:46:29,125 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:46:29,125 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 10:46:29,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140997355] [2020-10-28 10:46:29,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:46:29,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:46:29,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:46:29,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:46:29,140 INFO L87 Difference]: Start difference. First operand 15165 states and 19744 transitions. Second operand 7 states. [2020-10-28 10:46:55,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:46:55,336 INFO L93 Difference]: Finished difference Result 38091 states and 49437 transitions. [2020-10-28 10:46:55,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 10:46:55,337 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1712 [2020-10-28 10:46:55,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:46:55,410 INFO L225 Difference]: With dead ends: 38091 [2020-10-28 10:46:55,411 INFO L226 Difference]: Without dead ends: 22932 [2020-10-28 10:46:55,446 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 10:46:55,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22932 states. [2020-10-28 10:46:55,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22932 to 22631. [2020-10-28 10:46:55,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22631 states. [2020-10-28 10:46:55,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22631 states to 22631 states and 28115 transitions. [2020-10-28 10:46:55,979 INFO L78 Accepts]: Start accepts. Automaton has 22631 states and 28115 transitions. Word has length 1712 [2020-10-28 10:46:55,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:46:55,979 INFO L481 AbstractCegarLoop]: Abstraction has 22631 states and 28115 transitions. [2020-10-28 10:46:55,980 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:46:55,980 INFO L276 IsEmpty]: Start isEmpty. Operand 22631 states and 28115 transitions. [2020-10-28 10:46:56,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1826 [2020-10-28 10:46:56,195 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:46:56,197 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:46:56,197 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 10:46:56,198 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:46:56,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:46:56,199 INFO L82 PathProgramCache]: Analyzing trace with hash -1468392010, now seen corresponding path program 1 times [2020-10-28 10:46:56,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:46:56,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [491213313] [2020-10-28 10:46:56,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:46:56,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:46:56,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:46:57,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:46:58,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:47:01,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:47:01,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1853 [2020-10-28 10:47:01,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:47:01,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5107 [2020-10-28 10:47:01,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:47:01,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:47:01,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:47:01,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-10-28 10:47:01,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 10:47:01,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:47:02,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:47:02,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:47:02,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:47:02,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:47:02,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:47:02,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:47:02,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 10:47:02,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:47:02,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:47:02,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:47:02,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:47:02,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:47:02,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:47:02,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:47:02,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:47:02,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:47:02,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:47:02,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-28 10:47:02,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:47:02,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-10-28 10:47:02,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:47:02,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:47:02,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:47:02,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:47:02,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-28 10:47:02,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:47:02,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-28 10:47:02,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:47:02,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:47:02,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:47:02,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-28 10:47:02,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:47:02,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-28 10:47:02,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:47:02,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:47:02,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:47:02,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:47:02,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 10:47:02,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:47:04,144 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 148 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 10:47:04,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [491213313] [2020-10-28 10:47:04,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:47:04,145 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:47:04,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176165908] [2020-10-28 10:47:04,146 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:47:04,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:47:04,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:47:04,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:47:04,147 INFO L87 Difference]: Start difference. First operand 22631 states and 28115 transitions. Second operand 7 states. [2020-10-28 10:47:36,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:47:36,047 INFO L93 Difference]: Finished difference Result 52559 states and 69285 transitions. [2020-10-28 10:47:36,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 10:47:36,048 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1825 [2020-10-28 10:47:36,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:47:36,147 INFO L225 Difference]: With dead ends: 52559 [2020-10-28 10:47:36,147 INFO L226 Difference]: Without dead ends: 31664 [2020-10-28 10:47:36,199 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:47:36,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31664 states. [2020-10-28 10:47:36,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31664 to 31113. [2020-10-28 10:47:36,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31113 states. [2020-10-28 10:47:37,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31113 states to 31113 states and 39648 transitions. [2020-10-28 10:47:37,030 INFO L78 Accepts]: Start accepts. Automaton has 31113 states and 39648 transitions. Word has length 1825 [2020-10-28 10:47:37,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:47:37,031 INFO L481 AbstractCegarLoop]: Abstraction has 31113 states and 39648 transitions. [2020-10-28 10:47:37,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:47:37,031 INFO L276 IsEmpty]: Start isEmpty. Operand 31113 states and 39648 transitions. [2020-10-28 10:47:37,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1854 [2020-10-28 10:47:37,135 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:47:37,137 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:47:37,137 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 10:47:37,137 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:47:37,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:47:37,138 INFO L82 PathProgramCache]: Analyzing trace with hash -1579396604, now seen corresponding path program 1 times [2020-10-28 10:47:37,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:47:37,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [961301485] [2020-10-28 10:47:37,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:47:37,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:47:37,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:47:38,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:47:39,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:47:42,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:47:42,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1883 [2020-10-28 10:47:42,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:47:42,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5120 [2020-10-28 10:47:42,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:47:42,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:47:42,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:47:42,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-10-28 10:47:42,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-28 10:47:42,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:47:42,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:47:42,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:47:42,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:47:42,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:47:42,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:47:42,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:47:42,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 10:47:42,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:47:42,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:47:42,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:47:42,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:47:42,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:47:42,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:47:42,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:47:42,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:47:43,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:47:43,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:47:43,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-28 10:47:43,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:47:43,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-28 10:47:43,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:47:43,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:47:43,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:47:43,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:47:43,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-28 10:47:43,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:47:43,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-28 10:47:43,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:47:43,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:47:43,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:47:43,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:47:43,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-28 10:47:43,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:47:43,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-28 10:47:43,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:47:43,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:47:43,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:47:43,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:47:43,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 10:47:43,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:47:43,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-28 10:47:43,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:47:43,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:47:43,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:47:43,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 10:47:43,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:47:43,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 10:47:43,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:47:43,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:47:43,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:47:43,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:47:43,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 10:47:43,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:47:44,547 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 168 proven. 4 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-10-28 10:47:44,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [961301485] [2020-10-28 10:47:44,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:47:44,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:47:44,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851380445] [2020-10-28 10:47:44,551 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:47:44,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:47:44,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:47:44,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:47:44,552 INFO L87 Difference]: Start difference. First operand 31113 states and 39648 transitions. Second operand 7 states.