/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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 --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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-industry-pattern/ofuf_1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 12:36:43,048 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:36:43,055 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:36:43,101 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:36:43,102 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:36:43,110 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:36:43,112 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:36:43,115 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:36:43,118 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:36:43,121 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:36:43,122 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:36:43,124 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:36:43,124 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:36:43,127 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:36:43,130 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:36:43,132 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:36:43,133 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:36:43,135 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:36:43,136 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:36:43,145 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:36:43,147 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:36:43,148 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:36:43,149 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:36:43,150 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:36:43,162 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:36:43,163 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:36:43,163 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:36:43,164 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:36:43,164 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:36:43,165 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:36:43,166 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:36:43,167 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:36:43,168 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:36:43,169 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:36:43,170 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:36:43,171 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:36:43,171 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:36:43,172 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:36:43,172 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:36:43,173 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:36:43,175 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:36:43,176 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 [2020-09-21 12:36:43,222 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:36:43,222 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:36:43,224 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:36:43,224 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:36:43,224 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:36:43,225 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:36:43,225 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 12:36:43,225 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:36:43,225 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 12:36:43,226 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:36:43,227 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:36:43,227 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:36:43,227 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:36:43,228 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 12:36:43,228 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:36:43,228 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:36:43,228 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:36:43,228 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:36:43,229 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:36:43,229 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:36:43,229 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:36:43,229 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:36:43,229 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:36:43,230 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:36:43,230 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:36:43,230 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:36:43,230 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:36:43,230 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:36:43,230 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:36:43,231 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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.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=1000;interpolation-heuristic=SMALLEST;log-additional-information=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=1000;interpolation-heuristic=SMALLEST;log-additional-information=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=1000;interpolation-heuristic=SMALLEST;log-additional-information=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=1000;interpolation-heuristic=SMALLEST;log-additional-information=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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-21 12:36:43,670 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:36:43,686 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:36:43,690 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:36:43,692 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:36:43,692 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:36:43,693 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/ofuf_1.c [2020-09-21 12:36:43,785 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/357927672/d05074c1970840f5b1a9849ec9254ce9/FLAG3dc9bc181 [2020-09-21 12:36:44,422 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:36:44,423 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-industry-pattern/ofuf_1.c [2020-09-21 12:36:44,437 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/357927672/d05074c1970840f5b1a9849ec9254ce9/FLAG3dc9bc181 [2020-09-21 12:36:44,713 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/357927672/d05074c1970840f5b1a9849ec9254ce9 [2020-09-21 12:36:44,726 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:36:44,732 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:36:44,733 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:36:44,733 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:36:44,738 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:36:44,739 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:36:44" (1/1) ... [2020-09-21 12:36:44,744 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@657b60e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:36:44, skipping insertion in model container [2020-09-21 12:36:44,744 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:36:44" (1/1) ... [2020-09-21 12:36:44,753 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:36:44,803 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:36:45,229 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:36:45,243 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:36:45,323 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:36:45,351 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:36:45,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:36:45 WrapperNode [2020-09-21 12:36:45,352 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:36:45,353 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:36:45,353 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:36:45,353 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:36:45,369 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:36:45" (1/1) ... [2020-09-21 12:36:45,369 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:36:45" (1/1) ... [2020-09-21 12:36:45,394 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:36:45" (1/1) ... [2020-09-21 12:36:45,394 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:36:45" (1/1) ... [2020-09-21 12:36:45,433 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:36:45" (1/1) ... [2020-09-21 12:36:45,445 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:36:45" (1/1) ... [2020-09-21 12:36:45,451 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:36:45" (1/1) ... [2020-09-21 12:36:45,459 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:36:45,459 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:36:45,460 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:36:45,460 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:36:45,461 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:36:45" (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 [2020-09-21 12:36:45,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:36:45,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:36:45,561 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-21 12:36:45,561 INFO L138 BoogieDeclarations]: Found implementation of procedure avoid_zero [2020-09-21 12:36:45,562 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_107 [2020-09-21 12:36:45,562 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_110 [2020-09-21 12:36:45,562 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_113 [2020-09-21 12:36:45,562 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_114 [2020-09-21 12:36:45,564 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_115 [2020-09-21 12:36:45,565 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_117 [2020-09-21 12:36:45,565 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_118 [2020-09-21 12:36:45,565 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:36:45,565 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-21 12:36:45,565 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:36:45,565 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-21 12:36:45,567 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-21 12:36:45,567 INFO L130 BoogieDeclarations]: Found specification of procedure avoid_zero [2020-09-21 12:36:45,567 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2020-09-21 12:36:45,567 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_107 [2020-09-21 12:36:45,568 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_110 [2020-09-21 12:36:45,568 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_113 [2020-09-21 12:36:45,568 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_114 [2020-09-21 12:36:45,568 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_115 [2020-09-21 12:36:45,568 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 12:36:45,569 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_117 [2020-09-21 12:36:45,570 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_118 [2020-09-21 12:36:45,570 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2020-09-21 12:36:45,571 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:36:45,571 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-21 12:36:45,571 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 12:36:45,571 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-21 12:36:45,571 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 12:36:45,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-21 12:36:45,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 12:36:45,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 12:36:45,572 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 12:36:45,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-21 12:36:45,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:36:45,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-09-21 12:36:45,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:36:46,590 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:36:46,590 INFO L295 CfgBuilder]: Removed 7 assume(true) statements. [2020-09-21 12:36:46,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:36:46 BoogieIcfgContainer [2020-09-21 12:36:46,597 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:36:46,598 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:36:46,598 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:36:46,602 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:36:46,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:36:44" (1/3) ... [2020-09-21 12:36:46,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72c5939d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:36:46, skipping insertion in model container [2020-09-21 12:36:46,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:36:45" (2/3) ... [2020-09-21 12:36:46,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72c5939d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:36:46, skipping insertion in model container [2020-09-21 12:36:46,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:36:46" (3/3) ... [2020-09-21 12:36:46,607 INFO L109 eAbstractionObserver]: Analyzing ICFG ofuf_1.c [2020-09-21 12:36:46,620 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:36:46,630 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 12:36:46,654 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 12:36:46,687 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:36:46,687 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:36:46,687 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:36:46,687 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:36:46,687 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:36:46,688 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:36:46,688 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:36:46,688 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:36:46,715 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states. [2020-09-21 12:36:46,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-21 12:36:46,728 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:36:46,729 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] [2020-09-21 12:36:46,730 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:36:46,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:36:46,738 INFO L82 PathProgramCache]: Analyzing trace with hash 1921771477, now seen corresponding path program 1 times [2020-09-21 12:36:46,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:36:46,751 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1874370427] [2020-09-21 12:36:46,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:36:47,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:36:47,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:47,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:47,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:47,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:48,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:36:48,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-21 12:36:48,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-21 12:36:48,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1020 [2020-09-21 12:36:48,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:36:48,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:36:48,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-09-21 12:36:48,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:36:48,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-21 12:36:48,292 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-09-21 12:36:48,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:36:48,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:36:48,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:48,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:36:48,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:36:48,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:36:48,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-21 12:36:48,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:36:48,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:36:48,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:36:48,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:36:48,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:36:48,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-21 12:36:48,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:36:48,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:48,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:48,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:48,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:36:48,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 12:36:48,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:36:48,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-09-21 12:36:48,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:36:48,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:36:48,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:36:48,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:36:48,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:36:48,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-21 12:36:48,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:36:48,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:48,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:36:48,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:36:48,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:36:48,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:36:48,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:36:48,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:36:48,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-21 12:36:48,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:36:48,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-21 12:36:48,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:36:48,571 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1874370427] [2020-09-21 12:36:48,576 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:36:48,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:36:48,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098641658] [2020-09-21 12:36:48,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:36:48,585 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:36:48,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:36:48,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:36:48,607 INFO L87 Difference]: Start difference. First operand 127 states. Second operand 4 states. [2020-09-21 12:36:48,781 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-09-21 12:36:49,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:36:49,306 INFO L93 Difference]: Finished difference Result 241 states and 361 transitions. [2020-09-21 12:36:49,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:36:49,309 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2020-09-21 12:36:49,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:36:49,325 INFO L225 Difference]: With dead ends: 241 [2020-09-21 12:36:49,326 INFO L226 Difference]: Without dead ends: 118 [2020-09-21 12:36:49,332 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:36:49,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-09-21 12:36:49,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2020-09-21 12:36:49,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-09-21 12:36:49,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 164 transitions. [2020-09-21 12:36:49,459 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 164 transitions. Word has length 38 [2020-09-21 12:36:49,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:36:49,459 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 164 transitions. [2020-09-21 12:36:49,459 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:36:49,460 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 164 transitions. [2020-09-21 12:36:49,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-21 12:36:49,465 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:36:49,466 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] [2020-09-21 12:36:49,466 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:36:49,466 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:36:49,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:36:49,467 INFO L82 PathProgramCache]: Analyzing trace with hash -598188457, now seen corresponding path program 1 times [2020-09-21 12:36:49,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:36:49,467 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1730927168] [2020-09-21 12:36:49,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:36:49,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:36:49,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:49,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:49,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:49,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:50,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:36:50,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-21 12:36:50,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-21 12:36:50,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1001 [2020-09-21 12:36:50,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:36:50,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:36:50,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-21 12:36:50,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:36:50,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:36:50,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:36:50,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:36:50,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:50,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:36:50,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:36:50,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:36:50,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-21 12:36:50,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:36:50,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:36:50,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:36:50,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:36:50,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:36:50,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-21 12:36:50,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:36:50,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:50,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:50,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:36:50,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 12:36:50,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:36:50,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-09-21 12:36:50,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:36:50,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:36:50,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 12:36:50,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 12:36:50,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:36:50,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-21 12:36:50,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:36:50,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:50,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:36:50,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:36:50,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:36:50,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:36:50,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:36:50,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:36:50,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-21 12:36:50,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:36:50,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:36:50,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:36:50,874 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1730927168] [2020-09-21 12:36:50,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:36:50,875 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 12:36:50,875 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409612054] [2020-09-21 12:36:50,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:36:50,878 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:36:50,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:36:50,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:36:50,879 INFO L87 Difference]: Start difference. First operand 118 states and 164 transitions. Second operand 5 states. [2020-09-21 12:36:51,041 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-09-21 12:36:51,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:36:51,931 INFO L93 Difference]: Finished difference Result 167 states and 227 transitions. [2020-09-21 12:36:51,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 12:36:51,932 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2020-09-21 12:36:51,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:36:51,937 INFO L225 Difference]: With dead ends: 167 [2020-09-21 12:36:51,937 INFO L226 Difference]: Without dead ends: 126 [2020-09-21 12:36:51,939 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:36:51,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-09-21 12:36:51,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 118. [2020-09-21 12:36:51,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-09-21 12:36:51,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 163 transitions. [2020-09-21 12:36:51,964 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 163 transitions. Word has length 38 [2020-09-21 12:36:51,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:36:51,964 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 163 transitions. [2020-09-21 12:36:51,964 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:36:51,965 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 163 transitions. [2020-09-21 12:36:51,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-09-21 12:36:51,967 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:36:51,967 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] [2020-09-21 12:36:51,967 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 12:36:51,968 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:36:51,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:36:51,968 INFO L82 PathProgramCache]: Analyzing trace with hash 910936841, now seen corresponding path program 1 times [2020-09-21 12:36:51,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:36:51,969 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [243817186] [2020-09-21 12:36:51,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:36:52,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:36:52,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:52,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:52,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:52,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:53,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:36:53,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-21 12:36:53,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-21 12:36:53,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1047 [2020-09-21 12:36:53,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:36:53,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:36:53,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-21 12:36:53,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:36:53,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:36:53,243 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-09-21 12:36:53,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:36:53,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:36:53,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:53,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:36:53,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:36:53,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:36:53,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-21 12:36:53,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:36:53,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:36:53,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:36:53,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:36:53,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:36:53,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-21 12:36:53,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:36:53,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:53,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:53,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:36:53,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-21 12:36:53,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:36:53,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-09-21 12:36:53,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:36:53,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:36:53,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 12:36:53,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:36:53,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:36:53,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-21 12:36:53,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:36:53,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:53,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:36:53,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:36:53,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:36:53,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:36:53,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:36:53,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:36:53,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-21 12:36:53,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:36:53,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:36:53,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:36:53,537 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [243817186] [2020-09-21 12:36:53,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:36:53,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 12:36:53,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117428338] [2020-09-21 12:36:53,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:36:53,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:36:53,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:36:53,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:36:53,543 INFO L87 Difference]: Start difference. First operand 118 states and 163 transitions. Second operand 5 states. [2020-09-21 12:36:53,704 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-09-21 12:36:54,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:36:54,518 INFO L93 Difference]: Finished difference Result 242 states and 344 transitions. [2020-09-21 12:36:54,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 12:36:54,519 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 39 [2020-09-21 12:36:54,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:36:54,521 INFO L225 Difference]: With dead ends: 242 [2020-09-21 12:36:54,521 INFO L226 Difference]: Without dead ends: 139 [2020-09-21 12:36:54,523 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:36:54,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-09-21 12:36:54,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 119. [2020-09-21 12:36:54,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-09-21 12:36:54,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 164 transitions. [2020-09-21 12:36:54,569 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 164 transitions. Word has length 39 [2020-09-21 12:36:54,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:36:54,569 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 164 transitions. [2020-09-21 12:36:54,569 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:36:54,570 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 164 transitions. [2020-09-21 12:36:54,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-21 12:36:54,571 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:36:54,572 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] [2020-09-21 12:36:54,572 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 12:36:54,572 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:36:54,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:36:54,573 INFO L82 PathProgramCache]: Analyzing trace with hash -458813973, now seen corresponding path program 1 times [2020-09-21 12:36:54,573 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:36:54,573 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1399635437] [2020-09-21 12:36:54,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:36:54,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:36:54,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:54,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:54,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:54,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:55,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:56,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:36:56,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-21 12:36:56,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-21 12:36:56,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1613 [2020-09-21 12:36:56,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:36:56,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:36:56,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-21 12:36:56,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:36:56,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:36:56,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:36:56,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:36:56,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:56,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:36:56,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:36:56,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:36:56,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-21 12:36:56,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:36:56,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:36:56,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:36:56,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:36:56,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:36:56,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-21 12:36:56,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:36:56,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:56,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:56,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:36:56,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-21 12:36:56,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:36:56,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-09-21 12:36:56,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:36:56,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:36:56,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-21 12:36:56,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:36:56,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:36:56,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 12:36:56,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:36:56,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:56,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:36:56,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:36:56,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:36:56,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:36:56,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:36:56,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:36:56,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-21 12:36:56,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:36:56,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:36:56,727 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 12:36:56,727 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1399635437] [2020-09-21 12:36:56,729 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:36:56,731 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 12:36:56,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029660405] [2020-09-21 12:36:56,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:36:56,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:36:56,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:36:56,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:36:56,734 INFO L87 Difference]: Start difference. First operand 119 states and 164 transitions. Second operand 5 states. [2020-09-21 12:36:56,861 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-09-21 12:36:58,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:36:58,331 INFO L93 Difference]: Finished difference Result 178 states and 244 transitions. [2020-09-21 12:36:58,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 12:36:58,332 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 41 [2020-09-21 12:36:58,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:36:58,334 INFO L225 Difference]: With dead ends: 178 [2020-09-21 12:36:58,334 INFO L226 Difference]: Without dead ends: 137 [2020-09-21 12:36:58,335 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:36:58,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-09-21 12:36:58,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 120. [2020-09-21 12:36:58,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-09-21 12:36:58,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 165 transitions. [2020-09-21 12:36:58,353 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 165 transitions. Word has length 41 [2020-09-21 12:36:58,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:36:58,353 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 165 transitions. [2020-09-21 12:36:58,353 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:36:58,353 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 165 transitions. [2020-09-21 12:36:58,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-21 12:36:58,355 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:36:58,355 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] [2020-09-21 12:36:58,355 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 12:36:58,356 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:36:58,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:36:58,356 INFO L82 PathProgramCache]: Analyzing trace with hash 265335926, now seen corresponding path program 1 times [2020-09-21 12:36:58,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:36:58,356 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [799158762] [2020-09-21 12:36:58,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:36:58,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:36:58,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:58,462 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [799158762] [2020-09-21 12:36:58,463 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2020-09-21 12:36:58,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:36:58,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-09-21 12:36:58,464 ERROR L206 FreeRefinementEngine]: Strategy FIXED_PREFERENCES failed to provide any proof altough trace is infeasible [2020-09-21 12:36:58,465 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 12:36:58,471 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 12:36:58,499 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-09-21 12:36:58,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 12:36:58 BoogieIcfgContainer [2020-09-21 12:36:58,500 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 12:36:58,502 INFO L168 Benchmark]: Toolchain (without parser) took 13774.10 ms. Allocated memory was 141.0 MB in the beginning and 378.0 MB in the end (delta: 237.0 MB). Free memory was 103.5 MB in the beginning and 107.4 MB in the end (delta: -4.0 MB). Peak memory consumption was 233.0 MB. Max. memory is 7.1 GB. [2020-09-21 12:36:58,503 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 12:36:58,504 INFO L168 Benchmark]: CACSL2BoogieTranslator took 619.40 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 102.8 MB in the beginning and 174.1 MB in the end (delta: -71.3 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-09-21 12:36:58,505 INFO L168 Benchmark]: Boogie Preprocessor took 106.36 ms. Allocated memory is still 203.9 MB. Free memory was 174.1 MB in the beginning and 169.5 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. [2020-09-21 12:36:58,506 INFO L168 Benchmark]: RCFGBuilder took 1137.35 ms. Allocated memory is still 203.9 MB. Free memory was 169.5 MB in the beginning and 107.1 MB in the end (delta: 62.4 MB). Peak memory consumption was 62.4 MB. Max. memory is 7.1 GB. [2020-09-21 12:36:58,507 INFO L168 Benchmark]: TraceAbstraction took 11901.52 ms. Allocated memory was 203.9 MB in the beginning and 378.0 MB in the end (delta: 174.1 MB). Free memory was 106.4 MB in the beginning and 107.4 MB in the end (delta: -971.0 kB). Peak memory consumption was 173.1 MB. Max. memory is 7.1 GB. [2020-09-21 12:36:58,510 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 619.40 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 102.8 MB in the beginning and 174.1 MB in the end (delta: -71.3 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 106.36 ms. Allocated memory is still 203.9 MB. Free memory was 174.1 MB in the beginning and 169.5 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1137.35 ms. Allocated memory is still 203.9 MB. Free memory was 169.5 MB in the beginning and 107.1 MB in the end (delta: 62.4 MB). Peak memory consumption was 62.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11901.52 ms. Allocated memory was 203.9 MB in the beginning and 378.0 MB in the end (delta: 174.1 MB). Free memory was 106.4 MB in the beginning and 107.4 MB in the end (delta: -971.0 kB). Peak memory consumption was 173.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 487]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L204] unsigned int Id_MCDC_122; [L205] UINT16 Id_MCDC_123; [L206] UINT16 Id_MCDC_124; [L207] Od_IndexTable* Id_MCDC_125; [L208] Od_IndexTable* Id_MCDC_126; [L209] Od_IndexTable* Id_MCDC_127; [L210] Od_IndexTable* Id_MCDC_128; [L211] Od_IndexTable* Id_MCDC_129; [L212] UINT32 Id_MCDC_130 [4]; [L213] CanOpenNode Id_MCDC_131; [L214] UINT32 Id_MCDC_132=0; [L452] void * Id_MCDC_161; [L453] void * Id_MCDC_162; [L454] void * Id_MCDC_163; [L455] void * Id_MCDC_164; [L456] void * Id_MCDC_165; [L457] void * Id_MCDC_166; [L458] int Id_MCDC_167; [L459] int Id_MCDC_168; [L460] int Id_MCDC_169; [L461] int Id_MCDC_170; [L462] int Id_MCDC_171; [L463] int Id_MCDC_172; [L464] int Id_MCDC_173; [L465] short Id_MCDC_174; [L466] short Id_MCDC_175; [L467] FILE* Id_MCDC_176; [L468] unsigned short Id_MCDC_177; [L469] unsigned short Id_MCDC_178; [L470] unsigned short Id_MCDC_179=0; [L471] unsigned short Id_MCDC_180=0; [L472] char Id_MCDC_181; [L473] char Id_MCDC_182; [L474] POS_CTRL_MODE Id_MCDC_183; [L475] Id_MCDC_176 = fopen("in.eds", "r") [L476] COND FALSE !(Id_MCDC_176 == (( void * ) 0)) [L481] CALL Id_MCDC_118() [L445] int Id_MCDC_159; [L446] void * Id_MCDC_160; [L447] CALL Id_MCDC_117() [L425] CHAR Id_MCDC_157 [4]={0, 0, 0, 0}; [L426] UINT32 Id_MCDC_158=0; [L427] Id_MCDC_131.Id_MCDC_66 = ( PDO_Buffer* ) malloc(372) [L428] CALL Id_MCDC_115() [L356] UINT32 Id_MCDC_141; [L357] UINT32 Id_MCDC_142; [L358] UINT32 Id_MCDC_143; [L359] UINT32 Id_MCDC_144; [L360] UINT32 Id_MCDC_145; [L361] UINT32 Id_MCDC_146=0x00; [L362] UINT16 Id_MCDC_147; [L363] UINT32 Id_MCDC_148=0x00; [L364] UINT32 Id_MCDC_149=0x00; [L365] UINT8 Id_MCDC_35=0; [L366] UINT8 Id_MCDC_150=0; [L367] UINT8 Id_MCDC_36=0; [L368] UINT8 Id_MCDC_151=0; [L369] UINT8 Id_MCDC_152=0x00; [L370] INT32 Id_MCDC_153; [L371] void * Id_MCDC_154; [L372] UINT32* Id_MCDC_155; [L373] UINT16 Id_MCDC_156; [L374] Id_MCDC_141 = 0x1800 [L375] Id_MCDC_150 = 0 [L375] COND TRUE Id_MCDC_150 < 4 [L377] Id_MCDC_130[Id_MCDC_150] = 0x1A00 + Id_MCDC_150 [L375] Id_MCDC_150++ [L375] COND FALSE !(Id_MCDC_150 < 4) [L379] COND TRUE Id_MCDC_141 <= 0x1803 [L381] Id_MCDC_156 = 0 [L381] COND TRUE Id_MCDC_156 < 4 [L383] Id_MCDC_144 = Id_MCDC_141 [L384] CALL, EXPR Id_MCDC_107(Id_MCDC_141, 1, & Id_MCDC_149, & Id_MCDC_148, & Id_MCDC_153, ( void * ) & Id_MCDC_146, 0) [L218] UINT32 Id_MCDC_133=0x80000000; [L219] Od_IndexTable* Id_MCDC_134; [L220] Id_MCDC_134 = Id_MCDC_129 [L221] COND TRUE Id_MCDC_134 == (( void * ) 0) [L223] return 0x08000023; [L384] RET, EXPR Id_MCDC_107(Id_MCDC_141, 1, & Id_MCDC_149, & Id_MCDC_148, & Id_MCDC_153, ( void * ) & Id_MCDC_146, 0) [L384] COND TRUE Id_MCDC_107(Id_MCDC_141, 1, & Id_MCDC_149, & Id_MCDC_148, & Id_MCDC_153, ( void * ) & Id_MCDC_146, 0) != 0x00 [L386] return 0xFFFF; [L361] UINT32 Id_MCDC_146=0x00; [L386] return 0xFFFF; [L363] UINT32 Id_MCDC_148=0x00; [L386] return 0xFFFF; [L364] UINT32 Id_MCDC_149=0x00; [L386] return 0xFFFF; [L386] return 0xFFFF; [L386] return 0xFFFF; [L428] RET Id_MCDC_115() [L429] Id_MCDC_158 = 0 [L429] COND FALSE !(Id_MCDC_158 < 4) [L440] CALL Id_MCDC_113(4, Id_MCDC_157) [L305] UINT32 Id_MCDC_139=0; [L306] UINT32 Id_MCDC_140=0; [L307] COND FALSE !(Id_MCDC_111 < 2) [L311] COND FALSE !(Id_MCDC_111 != 2) [L317] EXPR Id_MCDC_112[1] [L317] Id_MCDC_140 = Id_MCDC_112[1] [L319] EXPR Id_MCDC_112[0] [L319] CALL Id_MCDC_110(Id_MCDC_112[0], Id_MCDC_140) [L274] UINT32 Id_MCDC_135=0; [L275] UINT32 Id_MCDC_136=0; [L276] UINT32 Id_MCDC_137=1; [L277] UINT32 Id_MCDC_138=0; [L278] COND TRUE Id_MCDC_108 > Id_MCDC_109 [L280] Id_MCDC_135 = Id_MCDC_108 [L281] Id_MCDC_136 = Id_MCDC_109 [L293] COND TRUE Id_MCDC_137 != 0 [L295] CALL avoid_zero(Id_MCDC_136 != 0) [L9] COND FALSE !(!y) [L295] RET avoid_zero(Id_MCDC_136 != 0) [L296] CALL __VERIFIER_assert(( long long ) (Id_MCDC_135 / Id_MCDC_136) >= 0 && ( long long ) (Id_MCDC_135 / Id_MCDC_136) <= 4294967295) [L485] COND TRUE ! (Id_MCDC_121) [L487] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 13 procedures, 131 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 11.7s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 4.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 559 SDtfs, 842 SDslu, 249 SDs, 0 SdLazy, 776 SolverSat, 179 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=127occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 45 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 6.5s InterpolantComputationTime, 202 NumberOfCodeBlocks, 202 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 152 ConstructedInterpolants, 0 QuantifiedInterpolants, 25838 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 1/1 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...