/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=DEEPEST --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_label55.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 16:21:26,975 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 16:21:26,979 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 16:21:27,038 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 16:21:27,039 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 16:21:27,046 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 16:21:27,049 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 16:21:27,053 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 16:21:27,057 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 16:21:27,063 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 16:21:27,064 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 16:21:27,066 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 16:21:27,066 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 16:21:27,069 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 16:21:27,072 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 16:21:27,074 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 16:21:27,075 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 16:21:27,079 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 16:21:27,087 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 16:21:27,094 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 16:21:27,096 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 16:21:27,097 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 16:21:27,098 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 16:21:27,099 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 16:21:27,102 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 16:21:27,103 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 16:21:27,103 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 16:21:27,104 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 16:21:27,105 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 16:21:27,106 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 16:21:27,106 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 16:21:27,107 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 16:21:27,108 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 16:21:27,109 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 16:21:27,110 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 16:21:27,111 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 16:21:27,111 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 16:21:27,112 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 16:21:27,112 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 16:21:27,129 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 16:21:27,133 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 16:21:27,140 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 [2020-10-27 16:21:27,185 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 16:21:27,186 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 16:21:27,187 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 16:21:27,187 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 16:21:27,188 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 16:21:27,188 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 16:21:27,188 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 16:21:27,188 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 16:21:27,188 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 16:21:27,189 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 16:21:27,189 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 16:21:27,189 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 16:21:27,189 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 16:21:27,189 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 16:21:27,190 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 16:21:27,190 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 16:21:27,190 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 16:21:27,190 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 16:21:27,191 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 16:21:27,191 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 16:21:27,191 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 16:21:27,191 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 16:21:27,191 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 16:21:27,192 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 16:21:27,192 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 16:21:27,192 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 16:21:27,192 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 16:21:27,192 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 16:21:27,192 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 16:21:27,193 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 16:21:27,652 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 16:21:27,684 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 16:21:27,687 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 16:21:27,688 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 16:21:27,689 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 16:21:27,690 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label55.c [2020-10-27 16:21:27,784 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0b4547d3f/e1d9fd6160124316aeb0d68de4405aca/FLAG63bef418d [2020-10-27 16:21:29,091 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 16:21:29,092 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label55.c [2020-10-27 16:21:29,149 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0b4547d3f/e1d9fd6160124316aeb0d68de4405aca/FLAG63bef418d [2020-10-27 16:21:29,334 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0b4547d3f/e1d9fd6160124316aeb0d68de4405aca [2020-10-27 16:21:29,337 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 16:21:29,345 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 16:21:29,350 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 16:21:29,350 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 16:21:29,354 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 16:21:29,356 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:21:29" (1/1) ... [2020-10-27 16:21:29,362 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5772071c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:21:29, skipping insertion in model container [2020-10-27 16:21:29,363 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:21:29" (1/1) ... [2020-10-27 16:21:29,372 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 16:21:29,611 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 16:21:31,876 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 16:21:31,933 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 16:21:33,358 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 16:21:33,436 INFO L208 MainTranslator]: Completed translation [2020-10-27 16:21:33,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:21:33 WrapperNode [2020-10-27 16:21:33,437 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 16:21:33,438 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 16:21:33,438 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 16:21:33,439 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 16:21:33,455 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:21:33" (1/1) ... [2020-10-27 16:21:33,455 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:21:33" (1/1) ... [2020-10-27 16:21:33,556 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:21:33" (1/1) ... [2020-10-27 16:21:33,557 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:21:33" (1/1) ... [2020-10-27 16:21:33,821 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:21:33" (1/1) ... [2020-10-27 16:21:33,933 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:21:33" (1/1) ... [2020-10-27 16:21:34,007 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:21:33" (1/1) ... [2020-10-27 16:21:34,079 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 16:21:34,081 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 16:21:34,081 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 16:21:34,081 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 16:21:34,082 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:21:33" (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 [2020-10-27 16:21:34,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 16:21:34,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 16:21:34,168 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 16:21:34,168 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 16:21:34,169 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 16:21:34,169 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 16:21:34,169 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-27 16:21:34,169 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-27 16:21:34,169 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-27 16:21:34,169 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2020-10-27 16:21:34,170 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2020-10-27 16:21:34,170 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 16:21:34,170 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 16:21:34,170 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 16:21:34,170 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 16:21:34,170 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-27 16:21:34,171 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-27 16:21:34,171 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-27 16:21:34,171 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2020-10-27 16:21:34,171 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2020-10-27 16:21:34,171 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 16:21:34,172 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 16:21:34,172 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 16:21:34,172 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 16:21:34,172 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 16:21:34,172 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 16:21:34,172 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 16:21:34,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 16:21:34,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 16:21:34,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 16:21:34,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 16:21:34,173 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 16:21:34,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 16:21:44,767 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 16:21:44,768 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 16:21:44,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:21:44 BoogieIcfgContainer [2020-10-27 16:21:44,775 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 16:21:44,779 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 16:21:44,779 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 16:21:44,784 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 16:21:44,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:21:29" (1/3) ... [2020-10-27 16:21:44,785 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@751e69e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:21:44, skipping insertion in model container [2020-10-27 16:21:44,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:21:33" (2/3) ... [2020-10-27 16:21:44,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@751e69e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:21:44, skipping insertion in model container [2020-10-27 16:21:44,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:21:44" (3/3) ... [2020-10-27 16:21:44,789 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label55.c [2020-10-27 16:21:44,802 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 16:21:44,810 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 16:21:44,824 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 16:21:44,880 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 16:21:44,880 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 16:21:44,881 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 16:21:44,881 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 16:21:44,881 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 16:21:44,881 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 16:21:44,881 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 16:21:44,881 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 16:21:44,944 INFO L276 IsEmpty]: Start isEmpty. Operand 2226 states. [2020-10-27 16:21:45,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1657 [2020-10-27 16:21:45,211 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:21:45,216 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] [2020-10-27 16:21:45,217 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:21:45,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:21:45,232 INFO L82 PathProgramCache]: Analyzing trace with hash -504284697, now seen corresponding path program 1 times [2020-10-27 16:21:45,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:21:45,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [592684714] [2020-10-27 16:21:45,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:21:46,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:21:47,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:21:51,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:21:51,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1680 [2020-10-27 16:21:51,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:21:51,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5273 [2020-10-27 16:21:51,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:21:51,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 16:21:51,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 16:21:51,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1671 [2020-10-27 16:21:51,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 16:21:54,136 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-27 16:21:54,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:21:54,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:21:54,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:21:54,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:21:54,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:21:54,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:21:54,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 16:21:54,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:21:54,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:21:54,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:21:54,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 16:21:54,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:21:56,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 16:21:56,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [592684714] [2020-10-27 16:21:56,724 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 16:21:56,725 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 16:21:56,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061848057] [2020-10-27 16:21:56,736 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 16:21:56,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:21:56,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 16:21:56,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 16:21:56,756 INFO L87 Difference]: Start difference. First operand 2226 states. Second operand 4 states. [2020-10-27 16:21:56,940 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-10-27 16:22:21,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:22:21,229 INFO L93 Difference]: Finished difference Result 6314 states and 11856 transitions. [2020-10-27 16:22:21,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 16:22:21,232 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1656 [2020-10-27 16:22:21,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:22:21,307 INFO L225 Difference]: With dead ends: 6314 [2020-10-27 16:22:21,307 INFO L226 Difference]: Without dead ends: 4024 [2020-10-27 16:22:21,329 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 16:22:21,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4024 states. [2020-10-27 16:22:21,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4024 to 4009. [2020-10-27 16:22:21,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4009 states. [2020-10-27 16:22:21,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4009 states to 4009 states and 6272 transitions. [2020-10-27 16:22:21,614 INFO L78 Accepts]: Start accepts. Automaton has 4009 states and 6272 transitions. Word has length 1656 [2020-10-27 16:22:21,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:22:21,620 INFO L481 AbstractCegarLoop]: Abstraction has 4009 states and 6272 transitions. [2020-10-27 16:22:21,620 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 16:22:21,621 INFO L276 IsEmpty]: Start isEmpty. Operand 4009 states and 6272 transitions. [2020-10-27 16:22:21,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1666 [2020-10-27 16:22:21,761 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:22:21,763 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] [2020-10-27 16:22:21,764 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 16:22:21,766 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:22:21,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:22:21,767 INFO L82 PathProgramCache]: Analyzing trace with hash -1869894685, now seen corresponding path program 1 times [2020-10-27 16:22:21,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:22:21,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [324008300] [2020-10-27 16:22:21,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:22:21,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:22:21,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:22:24,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:22:26,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:22:26,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1691 [2020-10-27 16:22:26,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:22:26,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-27 16:22:26,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:22:26,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 16:22:26,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 16:22:26,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1668 [2020-10-27 16:22:26,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 16:22:28,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:22:28,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:22:28,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:22:28,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:22:28,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:22:28,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:22:28,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 16:22:28,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:22:28,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:22:28,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:22:28,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:22:28,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:22:28,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:22:28,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:22:28,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:22:28,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:22:28,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 16:22:28,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:22:28,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 16:22:28,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:22:28,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:22:28,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:22:28,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 16:22:28,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:22:31,475 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 16:22:31,475 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [324008300] [2020-10-27 16:22:31,476 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:22:31,476 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 16:22:31,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456007011] [2020-10-27 16:22:31,482 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 16:22:31,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:22:31,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 16:22:31,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 16:22:31,484 INFO L87 Difference]: Start difference. First operand 4009 states and 6272 transitions. Second operand 5 states. [2020-10-27 16:22:59,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:22:59,499 INFO L93 Difference]: Finished difference Result 11657 states and 18426 transitions. [2020-10-27 16:22:59,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 16:22:59,500 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1665 [2020-10-27 16:22:59,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:22:59,550 INFO L225 Difference]: With dead ends: 11657 [2020-10-27 16:22:59,551 INFO L226 Difference]: Without dead ends: 7654 [2020-10-27 16:22:59,563 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 16:22:59,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7654 states. [2020-10-27 16:22:59,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7654 to 7581. [2020-10-27 16:22:59,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7581 states. [2020-10-27 16:22:59,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7581 states to 7581 states and 10699 transitions. [2020-10-27 16:22:59,811 INFO L78 Accepts]: Start accepts. Automaton has 7581 states and 10699 transitions. Word has length 1665 [2020-10-27 16:22:59,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:22:59,815 INFO L481 AbstractCegarLoop]: Abstraction has 7581 states and 10699 transitions. [2020-10-27 16:22:59,815 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 16:22:59,816 INFO L276 IsEmpty]: Start isEmpty. Operand 7581 states and 10699 transitions. [2020-10-27 16:22:59,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1667 [2020-10-27 16:22:59,860 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:22:59,862 INFO L422 BasicCegarLoop]: trace histogram [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, 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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] [2020-10-27 16:22:59,862 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 16:22:59,862 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:22:59,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:22:59,864 INFO L82 PathProgramCache]: Analyzing trace with hash -650802201, now seen corresponding path program 1 times [2020-10-27 16:22:59,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:22:59,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1384086250] [2020-10-27 16:22:59,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:22:59,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:23:00,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:23:01,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:23:05,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:23:05,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1692 [2020-10-27 16:23:05,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:23:05,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5100 [2020-10-27 16:23:05,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:23:05,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 16:23:05,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-27 16:23:05,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1668 [2020-10-27 16:23:05,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:23:05,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:23:05,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:23:05,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:23:05,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:23:05,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:23:05,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:23:05,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 16:23:05,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:23:05,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:23:05,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:23:05,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:23:05,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:23:05,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:23:05,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:23:05,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:23:06,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:23:06,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 16:23:06,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:23:06,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 16:23:06,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:23:06,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:23:06,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:23:06,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 16:23:06,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:23:08,513 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 16:23:08,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1384086250] [2020-10-27 16:23:08,514 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:23:08,514 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 16:23:08,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23275553] [2020-10-27 16:23:08,516 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 16:23:08,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:23:08,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 16:23:08,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 16:23:08,517 INFO L87 Difference]: Start difference. First operand 7581 states and 10699 transitions. Second operand 5 states. [2020-10-27 16:23:37,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:23:37,135 INFO L93 Difference]: Finished difference Result 18779 states and 27355 transitions. [2020-10-27 16:23:37,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 16:23:37,136 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1666 [2020-10-27 16:23:37,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:23:37,198 INFO L225 Difference]: With dead ends: 18779 [2020-10-27 16:23:37,198 INFO L226 Difference]: Without dead ends: 11204 [2020-10-27 16:23:37,218 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 16:23:37,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11204 states. [2020-10-27 16:23:37,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11204 to 11120. [2020-10-27 16:23:37,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11120 states. [2020-10-27 16:23:37,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11120 states to 11120 states and 15219 transitions. [2020-10-27 16:23:37,515 INFO L78 Accepts]: Start accepts. Automaton has 11120 states and 15219 transitions. Word has length 1666 [2020-10-27 16:23:37,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:23:37,519 INFO L481 AbstractCegarLoop]: Abstraction has 11120 states and 15219 transitions. [2020-10-27 16:23:37,519 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 16:23:37,519 INFO L276 IsEmpty]: Start isEmpty. Operand 11120 states and 15219 transitions. [2020-10-27 16:23:37,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1693 [2020-10-27 16:23:37,576 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:23:37,577 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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, 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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] [2020-10-27 16:23:37,578 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 16:23:37,578 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:23:37,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:23:37,579 INFO L82 PathProgramCache]: Analyzing trace with hash 161999074, now seen corresponding path program 1 times [2020-10-27 16:23:37,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:23:37,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [682807774] [2020-10-27 16:23:37,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:23:37,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:23:37,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:23:37,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:23:37,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:23:39,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:23:42,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:23:42,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1720 [2020-10-27 16:23:42,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 16:23:42,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-27 16:23:42,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:23:42,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-27 16:23:42,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-27 16:23:42,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1279 [2020-10-27 16:23:42,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:23:46,236 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2020-10-27 16:23:46,702 WARN L193 SmtUtils]: Spent 439.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 56 [2020-10-27 16:23:47,109 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 56 [2020-10-27 16:23:47,485 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 48 [2020-10-27 16:23:47,741 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 44 [2020-10-27 16:23:47,964 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 39 [2020-10-27 16:23:48,097 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 36 [2020-10-27 16:23:48,236 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 36 [2020-10-27 16:23:48,380 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 36 [2020-10-27 16:23:48,524 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 36 [2020-10-27 16:23:48,672 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 36 [2020-10-27 16:23:49,091 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 33 [2020-10-27 16:23:49,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:23:49,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:23:49,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:23:49,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:23:49,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:23:49,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:23:49,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 16:23:49,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:23:49,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:23:49,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:23:49,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:23:49,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:23:49,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:23:49,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:23:49,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:23:49,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:23:49,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 16:23:49,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:23:49,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 16:23:49,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:23:49,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:23:49,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:23:49,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:23:49,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:23:49,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 16:23:49,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:23:49,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:23:49,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:23:49,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 16:23:49,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:23:49,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-27 16:23:49,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:23:49,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 16:23:49,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:23:49,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 16:23:49,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:24:13,807 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-27 16:24:13,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [682807774] [2020-10-27 16:24:13,807 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:24:13,807 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-27 16:24:13,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684877482] [2020-10-27 16:24:13,810 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-27 16:24:13,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:24:13,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-27 16:24:13,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=479, Unknown=0, NotChecked=0, Total=552 [2020-10-27 16:24:13,811 INFO L87 Difference]: Start difference. First operand 11120 states and 15219 transitions. Second operand 24 states. [2020-10-27 16:24:14,794 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-10-27 16:24:15,394 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-27 16:24:15,734 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-27 16:24:25,738 WARN L193 SmtUtils]: Spent 506.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 128 [2020-10-27 16:24:27,956 WARN L193 SmtUtils]: Spent 475.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 125 [2020-10-27 16:24:31,878 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 103 [2020-10-27 16:24:32,421 WARN L193 SmtUtils]: Spent 439.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 109 [2020-10-27 16:24:48,086 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 101 [2020-10-27 16:24:48,602 WARN L193 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 107 [2020-10-27 16:25:04,591 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 101 [2020-10-27 16:25:05,149 WARN L193 SmtUtils]: Spent 426.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 107 [2020-10-27 16:25:11,508 WARN L193 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 105