/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/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe019_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-bf4350c [2020-09-18 01:13:30,109 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-18 01:13:30,116 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-18 01:13:30,158 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-18 01:13:30,159 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-18 01:13:30,166 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-18 01:13:30,170 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-18 01:13:30,173 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-18 01:13:30,176 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-18 01:13:30,180 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-18 01:13:30,181 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-18 01:13:30,182 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-18 01:13:30,182 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-18 01:13:30,185 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-18 01:13:30,188 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-18 01:13:30,189 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-18 01:13:30,191 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-18 01:13:30,192 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-18 01:13:30,194 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-18 01:13:30,201 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-18 01:13:30,202 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-18 01:13:30,206 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-18 01:13:30,207 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-18 01:13:30,208 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-18 01:13:30,210 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-18 01:13:30,213 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-18 01:13:30,213 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-18 01:13:30,214 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-18 01:13:30,215 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-18 01:13:30,216 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-18 01:13:30,216 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-18 01:13:30,217 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-18 01:13:30,217 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-18 01:13:30,217 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-18 01:13:30,218 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-18 01:13:30,219 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-18 01:13:30,224 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-09-18 01:13:30,248 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-18 01:13:30,248 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-18 01:13:30,249 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-18 01:13:30,250 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-18 01:13:30,250 INFO L138 SettingsManager]: * Use SBE=true [2020-09-18 01:13:30,250 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-18 01:13:30,250 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-18 01:13:30,250 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-18 01:13:30,251 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-18 01:13:30,251 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-18 01:13:30,251 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-18 01:13:30,251 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-18 01:13:30,251 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-18 01:13:30,252 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-18 01:13:30,252 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-18 01:13:30,252 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-18 01:13:30,252 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-18 01:13:30,253 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-18 01:13:30,253 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-18 01:13:30,253 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-18 01:13:30,253 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-18 01:13:30,253 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-18 01:13:30,254 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-18 01:13:30,254 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-18 01:13:30,254 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-18 01:13:30,254 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-18 01:13:30,254 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-18 01:13:30,255 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-18 01:13:30,255 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-18 01:13:30,255 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-18 01:13:30,255 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-18 01:13:30,683 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-18 01:13:30,709 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-18 01:13:30,713 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-18 01:13:30,715 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-18 01:13:30,716 INFO L275 PluginConnector]: CDTParser initialized [2020-09-18 01:13:30,718 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe019_tso.oepc.i [2020-09-18 01:13:30,810 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca0ed1d5b/fec25ff112714f759405194b3ccda1b6/FLAGecff94be6 [2020-09-18 01:13:31,542 INFO L306 CDTParser]: Found 1 translation units. [2020-09-18 01:13:31,543 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe019_tso.oepc.i [2020-09-18 01:13:31,562 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca0ed1d5b/fec25ff112714f759405194b3ccda1b6/FLAGecff94be6 [2020-09-18 01:13:31,792 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca0ed1d5b/fec25ff112714f759405194b3ccda1b6 [2020-09-18 01:13:31,807 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-18 01:13:31,816 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-18 01:13:31,818 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-18 01:13:31,818 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-18 01:13:31,823 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-18 01:13:31,824 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 01:13:31" (1/1) ... [2020-09-18 01:13:31,828 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@acaf79b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 01:13:31, skipping insertion in model container [2020-09-18 01:13:31,829 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 01:13:31" (1/1) ... [2020-09-18 01:13:31,839 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-18 01:13:31,912 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-18 01:13:32,434 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-18 01:13:32,453 INFO L203 MainTranslator]: Completed pre-run [2020-09-18 01:13:32,504 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-18 01:13:32,583 INFO L208 MainTranslator]: Completed translation [2020-09-18 01:13:32,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 01:13:32 WrapperNode [2020-09-18 01:13:32,584 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-18 01:13:32,585 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-18 01:13:32,585 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-18 01:13:32,586 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-18 01:13:32,597 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 01:13:32" (1/1) ... [2020-09-18 01:13:32,617 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 01:13:32" (1/1) ... [2020-09-18 01:13:32,643 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-18 01:13:32,643 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-18 01:13:32,643 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-18 01:13:32,643 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-18 01:13:32,652 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 01:13:32" (1/1) ... [2020-09-18 01:13:32,653 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 01:13:32" (1/1) ... [2020-09-18 01:13:32,656 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 01:13:32" (1/1) ... [2020-09-18 01:13:32,657 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 01:13:32" (1/1) ... [2020-09-18 01:13:32,664 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 01:13:32" (1/1) ... [2020-09-18 01:13:32,667 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 01:13:32" (1/1) ... [2020-09-18 01:13:32,670 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 01:13:32" (1/1) ... [2020-09-18 01:13:32,673 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-18 01:13:32,674 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-18 01:13:32,674 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-18 01:13:32,674 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-18 01:13:32,675 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 01:13:32" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-09-18 01:13:32,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-18 01:13:32,760 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-18 01:13:32,760 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-18 01:13:32,760 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-18 01:13:32,761 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-18 01:13:32,761 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-18 01:13:32,761 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-18 01:13:32,761 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-18 01:13:32,762 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-18 01:13:32,762 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-18 01:13:32,762 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-09-18 01:13:32,762 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-09-18 01:13:32,762 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-18 01:13:32,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-18 01:13:32,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-18 01:13:32,765 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-18 01:13:33,182 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-18 01:13:33,183 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-18 01:13:33,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 01:13:33 BoogieIcfgContainer [2020-09-18 01:13:33,190 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-18 01:13:33,191 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-18 01:13:33,191 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-18 01:13:33,198 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-18 01:13:33,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 01:13:31" (1/3) ... [2020-09-18 01:13:33,199 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a706e07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 01:13:33, skipping insertion in model container [2020-09-18 01:13:33,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 01:13:32" (2/3) ... [2020-09-18 01:13:33,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a706e07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 01:13:33, skipping insertion in model container [2020-09-18 01:13:33,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 01:13:33" (3/3) ... [2020-09-18 01:13:33,202 INFO L109 eAbstractionObserver]: Analyzing ICFG safe019_tso.oepc.i [2020-09-18 01:13:33,215 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-18 01:13:33,216 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-18 01:13:33,228 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-18 01:13:33,229 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-18 01:13:33,260 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:13:33,260 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:13:33,261 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:13:33,261 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:13:33,261 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:13:33,262 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:13:33,262 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:13:33,262 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:13:33,262 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:13:33,263 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:13:33,263 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:13:33,263 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:13:33,264 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:13:33,264 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:13:33,264 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:13:33,264 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:13:33,265 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:13:33,265 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:13:33,266 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:13:33,266 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:13:33,266 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:13:33,266 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:13:33,267 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:13:33,267 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:13:33,271 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:13:33,272 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:13:33,272 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:13:33,272 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:13:33,278 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:13:33,279 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:13:33,279 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:13:33,279 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:13:33,281 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:13:33,281 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:13:33,282 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:13:33,282 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:13:33,284 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:13:33,284 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:13:33,284 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:13:33,284 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:13:33,307 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-09-18 01:13:33,331 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-18 01:13:33,331 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-18 01:13:33,332 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-18 01:13:33,332 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-18 01:13:33,332 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-18 01:13:33,332 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-18 01:13:33,332 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-18 01:13:33,333 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-18 01:13:33,369 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 92 places, 81 transitions, 182 flow [2020-09-18 01:13:33,372 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 92 places, 81 transitions, 182 flow [2020-09-18 01:13:33,426 INFO L129 PetriNetUnfolder]: 2/77 cut-off events. [2020-09-18 01:13:33,427 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-18 01:13:33,433 INFO L80 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 77 events. 2/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 59 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2020-09-18 01:13:33,436 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 92 places, 81 transitions, 182 flow [2020-09-18 01:13:33,461 INFO L129 PetriNetUnfolder]: 2/77 cut-off events. [2020-09-18 01:13:33,461 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-18 01:13:33,462 INFO L80 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 77 events. 2/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 59 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2020-09-18 01:13:33,465 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1822 [2020-09-18 01:13:33,467 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-18 01:13:35,037 INFO L206 etLargeBlockEncoding]: Checked pairs total: 3093 [2020-09-18 01:13:35,038 INFO L214 etLargeBlockEncoding]: Total number of compositions: 65 [2020-09-18 01:13:35,043 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 25 transitions, 70 flow [2020-09-18 01:13:35,094 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 706 states. [2020-09-18 01:13:35,096 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states. [2020-09-18 01:13:35,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-18 01:13:35,108 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 01:13:35,109 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 01:13:35,110 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 01:13:35,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 01:13:35,117 INFO L82 PathProgramCache]: Analyzing trace with hash -2005095105, now seen corresponding path program 1 times [2020-09-18 01:13:35,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 01:13:35,138 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621527432] [2020-09-18 01:13:35,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 01:13:35,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 01:13:35,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 01:13:35,418 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621527432] [2020-09-18 01:13:35,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 01:13:35,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-18 01:13:35,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [351403366] [2020-09-18 01:13:35,422 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 01:13:35,426 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 01:13:35,445 INFO L274 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-09-18 01:13:35,445 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 01:13:35,447 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 01:13:35,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-18 01:13:35,448 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 01:13:35,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-18 01:13:35,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 01:13:35,471 INFO L87 Difference]: Start difference. First operand 706 states. Second operand 3 states. [2020-09-18 01:13:35,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 01:13:35,533 INFO L93 Difference]: Finished difference Result 670 states and 2295 transitions. [2020-09-18 01:13:35,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-18 01:13:35,537 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-09-18 01:13:35,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 01:13:35,563 INFO L225 Difference]: With dead ends: 670 [2020-09-18 01:13:35,563 INFO L226 Difference]: Without dead ends: 526 [2020-09-18 01:13:35,584 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 01:13:35,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2020-09-18 01:13:35,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2020-09-18 01:13:35,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 526 states. [2020-09-18 01:13:35,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 1743 transitions. [2020-09-18 01:13:35,687 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 1743 transitions. Word has length 10 [2020-09-18 01:13:35,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 01:13:35,688 INFO L479 AbstractCegarLoop]: Abstraction has 526 states and 1743 transitions. [2020-09-18 01:13:35,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-18 01:13:35,689 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 1743 transitions. [2020-09-18 01:13:35,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-18 01:13:35,691 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 01:13:35,691 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 01:13:35,692 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-18 01:13:35,692 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 01:13:35,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 01:13:35,693 INFO L82 PathProgramCache]: Analyzing trace with hash -2027540211, now seen corresponding path program 1 times [2020-09-18 01:13:35,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 01:13:35,693 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686002502] [2020-09-18 01:13:35,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 01:13:35,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 01:13:35,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 01:13:35,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686002502] [2020-09-18 01:13:35,842 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 01:13:35,842 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-18 01:13:35,842 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1899462752] [2020-09-18 01:13:35,844 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 01:13:35,845 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 01:13:35,848 INFO L274 McrAutomatonBuilder]: Finished intersection with 19 states and 25 transitions. [2020-09-18 01:13:35,848 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 01:13:35,902 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 01:13:35,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-18 01:13:35,905 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 01:13:35,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-18 01:13:35,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-18 01:13:35,906 INFO L87 Difference]: Start difference. First operand 526 states and 1743 transitions. Second operand 4 states. [2020-09-18 01:13:35,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 01:13:35,948 INFO L93 Difference]: Finished difference Result 724 states and 2331 transitions. [2020-09-18 01:13:35,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-18 01:13:35,948 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-09-18 01:13:35,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 01:13:35,953 INFO L225 Difference]: With dead ends: 724 [2020-09-18 01:13:35,954 INFO L226 Difference]: Without dead ends: 412 [2020-09-18 01:13:35,955 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-18 01:13:35,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2020-09-18 01:13:35,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 412. [2020-09-18 01:13:35,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2020-09-18 01:13:35,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 1323 transitions. [2020-09-18 01:13:35,983 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 1323 transitions. Word has length 11 [2020-09-18 01:13:35,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 01:13:35,983 INFO L479 AbstractCegarLoop]: Abstraction has 412 states and 1323 transitions. [2020-09-18 01:13:35,983 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-18 01:13:35,983 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 1323 transitions. [2020-09-18 01:13:35,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-18 01:13:35,985 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 01:13:35,985 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 01:13:35,986 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-18 01:13:35,986 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 01:13:35,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 01:13:35,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1543893440, now seen corresponding path program 1 times [2020-09-18 01:13:35,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 01:13:35,987 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397364723] [2020-09-18 01:13:35,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 01:13:36,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 01:13:36,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 01:13:36,075 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397364723] [2020-09-18 01:13:36,075 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 01:13:36,075 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-18 01:13:36,076 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1579604803] [2020-09-18 01:13:36,076 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 01:13:36,077 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 01:13:36,079 INFO L274 McrAutomatonBuilder]: Finished intersection with 15 states and 16 transitions. [2020-09-18 01:13:36,080 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 01:13:36,092 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 01:13:36,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-18 01:13:36,093 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 01:13:36,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-18 01:13:36,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 01:13:36,093 INFO L87 Difference]: Start difference. First operand 412 states and 1323 transitions. Second operand 3 states. [2020-09-18 01:13:36,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 01:13:36,102 INFO L93 Difference]: Finished difference Result 394 states and 1254 transitions. [2020-09-18 01:13:36,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-18 01:13:36,103 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-09-18 01:13:36,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 01:13:36,106 INFO L225 Difference]: With dead ends: 394 [2020-09-18 01:13:36,107 INFO L226 Difference]: Without dead ends: 394 [2020-09-18 01:13:36,107 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 01:13:36,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2020-09-18 01:13:36,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 394. [2020-09-18 01:13:36,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2020-09-18 01:13:36,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1254 transitions. [2020-09-18 01:13:36,126 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1254 transitions. Word has length 12 [2020-09-18 01:13:36,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 01:13:36,127 INFO L479 AbstractCegarLoop]: Abstraction has 394 states and 1254 transitions. [2020-09-18 01:13:36,127 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-18 01:13:36,127 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1254 transitions. [2020-09-18 01:13:36,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-18 01:13:36,129 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 01:13:36,129 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 01:13:36,130 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-18 01:13:36,130 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 01:13:36,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 01:13:36,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1381595750, now seen corresponding path program 1 times [2020-09-18 01:13:36,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 01:13:36,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112271432] [2020-09-18 01:13:36,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 01:13:36,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 01:13:36,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 01:13:36,186 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112271432] [2020-09-18 01:13:36,187 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 01:13:36,187 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-18 01:13:36,187 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1750841954] [2020-09-18 01:13:36,187 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 01:13:36,189 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 01:13:36,193 INFO L274 McrAutomatonBuilder]: Finished intersection with 23 states and 31 transitions. [2020-09-18 01:13:36,193 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 01:13:36,245 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 01:13:36,245 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-18 01:13:36,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 01:13:36,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-18 01:13:36,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-18 01:13:36,246 INFO L87 Difference]: Start difference. First operand 394 states and 1254 transitions. Second operand 4 states. [2020-09-18 01:13:36,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 01:13:36,280 INFO L93 Difference]: Finished difference Result 652 states and 1957 transitions. [2020-09-18 01:13:36,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-18 01:13:36,281 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-09-18 01:13:36,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 01:13:36,284 INFO L225 Difference]: With dead ends: 652 [2020-09-18 01:13:36,284 INFO L226 Difference]: Without dead ends: 340 [2020-09-18 01:13:36,285 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-18 01:13:36,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2020-09-18 01:13:36,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 304. [2020-09-18 01:13:36,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2020-09-18 01:13:36,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 891 transitions. [2020-09-18 01:13:36,298 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 891 transitions. Word has length 13 [2020-09-18 01:13:36,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 01:13:36,298 INFO L479 AbstractCegarLoop]: Abstraction has 304 states and 891 transitions. [2020-09-18 01:13:36,298 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-18 01:13:36,298 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 891 transitions. [2020-09-18 01:13:36,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-18 01:13:36,300 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 01:13:36,300 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 01:13:36,300 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-18 01:13:36,300 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 01:13:36,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 01:13:36,301 INFO L82 PathProgramCache]: Analyzing trace with hash 1391724752, now seen corresponding path program 1 times [2020-09-18 01:13:36,301 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 01:13:36,301 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542837437] [2020-09-18 01:13:36,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 01:13:36,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 01:13:36,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 01:13:36,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542837437] [2020-09-18 01:13:36,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 01:13:36,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-18 01:13:36,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1937755561] [2020-09-18 01:13:36,385 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 01:13:36,386 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 01:13:36,390 INFO L274 McrAutomatonBuilder]: Finished intersection with 23 states and 33 transitions. [2020-09-18 01:13:36,390 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 01:13:36,475 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 01:13:36,475 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-18 01:13:36,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 01:13:36,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-18 01:13:36,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-18 01:13:36,477 INFO L87 Difference]: Start difference. First operand 304 states and 891 transitions. Second operand 4 states. [2020-09-18 01:13:36,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 01:13:36,506 INFO L93 Difference]: Finished difference Result 406 states and 1128 transitions. [2020-09-18 01:13:36,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-18 01:13:36,507 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-09-18 01:13:36,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 01:13:36,509 INFO L225 Difference]: With dead ends: 406 [2020-09-18 01:13:36,510 INFO L226 Difference]: Without dead ends: 226 [2020-09-18 01:13:36,510 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-18 01:13:36,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-09-18 01:13:36,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-09-18 01:13:36,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-09-18 01:13:36,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 619 transitions. [2020-09-18 01:13:36,520 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 619 transitions. Word has length 13 [2020-09-18 01:13:36,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 01:13:36,520 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 619 transitions. [2020-09-18 01:13:36,520 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-18 01:13:36,520 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 619 transitions. [2020-09-18 01:13:36,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-18 01:13:36,521 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 01:13:36,521 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 01:13:36,522 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-18 01:13:36,522 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 01:13:36,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 01:13:36,522 INFO L82 PathProgramCache]: Analyzing trace with hash 1162350155, now seen corresponding path program 1 times [2020-09-18 01:13:36,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 01:13:36,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694031630] [2020-09-18 01:13:36,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 01:13:36,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 01:13:36,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 01:13:36,679 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694031630] [2020-09-18 01:13:36,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 01:13:36,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-18 01:13:36,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [189937052] [2020-09-18 01:13:36,680 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 01:13:36,681 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 01:13:36,687 INFO L274 McrAutomatonBuilder]: Finished intersection with 33 states and 54 transitions. [2020-09-18 01:13:36,687 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 01:13:36,714 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-18 01:13:36,741 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-18 01:13:36,752 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-18 01:13:36,782 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-18 01:13:36,809 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-18 01:13:36,830 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-18 01:13:36,851 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-18 01:13:36,869 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-18 01:13:36,888 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [8106#(not (= 4 ~__unbuffered_cnt~0))] [2020-09-18 01:13:36,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-18 01:13:36,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 01:13:36,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-18 01:13:36,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-18 01:13:36,889 INFO L87 Difference]: Start difference. First operand 226 states and 619 transitions. Second operand 5 states. [2020-09-18 01:13:36,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 01:13:36,961 INFO L93 Difference]: Finished difference Result 243 states and 599 transitions. [2020-09-18 01:13:36,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-18 01:13:36,962 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-09-18 01:13:36,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 01:13:36,963 INFO L225 Difference]: With dead ends: 243 [2020-09-18 01:13:36,963 INFO L226 Difference]: Without dead ends: 162 [2020-09-18 01:13:36,964 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-18 01:13:36,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-09-18 01:13:36,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2020-09-18 01:13:36,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-09-18 01:13:36,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 369 transitions. [2020-09-18 01:13:36,969 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 369 transitions. Word has length 14 [2020-09-18 01:13:36,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 01:13:36,970 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 369 transitions. [2020-09-18 01:13:36,970 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-18 01:13:36,970 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 369 transitions. [2020-09-18 01:13:36,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-18 01:13:36,971 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 01:13:36,971 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 01:13:36,971 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-18 01:13:36,971 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 01:13:36,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 01:13:36,972 INFO L82 PathProgramCache]: Analyzing trace with hash -469082430, now seen corresponding path program 1 times [2020-09-18 01:13:36,972 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 01:13:36,972 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943007191] [2020-09-18 01:13:36,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 01:13:36,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 01:13:37,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 01:13:37,069 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943007191] [2020-09-18 01:13:37,069 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 01:13:37,069 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-18 01:13:37,070 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1292282018] [2020-09-18 01:13:37,070 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 01:13:37,072 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 01:13:37,083 INFO L274 McrAutomatonBuilder]: Finished intersection with 38 states and 62 transitions. [2020-09-18 01:13:37,083 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 01:13:37,099 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-18 01:13:37,117 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-18 01:13:37,138 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-18 01:13:37,190 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 01:13:37,190 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-18 01:13:37,191 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 01:13:37,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-18 01:13:37,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-18 01:13:37,191 INFO L87 Difference]: Start difference. First operand 162 states and 369 transitions. Second operand 6 states. [2020-09-18 01:13:37,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 01:13:37,258 INFO L93 Difference]: Finished difference Result 158 states and 337 transitions. [2020-09-18 01:13:37,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-18 01:13:37,259 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-09-18 01:13:37,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 01:13:37,260 INFO L225 Difference]: With dead ends: 158 [2020-09-18 01:13:37,260 INFO L226 Difference]: Without dead ends: 125 [2020-09-18 01:13:37,261 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-09-18 01:13:37,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-09-18 01:13:37,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2020-09-18 01:13:37,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-09-18 01:13:37,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 265 transitions. [2020-09-18 01:13:37,265 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 265 transitions. Word has length 16 [2020-09-18 01:13:37,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 01:13:37,266 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 265 transitions. [2020-09-18 01:13:37,266 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-18 01:13:37,266 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 265 transitions. [2020-09-18 01:13:37,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-18 01:13:37,267 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 01:13:37,267 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 01:13:37,267 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-18 01:13:37,267 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 01:13:37,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 01:13:37,268 INFO L82 PathProgramCache]: Analyzing trace with hash 483879941, now seen corresponding path program 1 times [2020-09-18 01:13:37,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 01:13:37,268 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436822210] [2020-09-18 01:13:37,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 01:13:37,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 01:13:37,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 01:13:37,378 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436822210] [2020-09-18 01:13:37,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 01:13:37,378 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-18 01:13:37,378 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [581364422] [2020-09-18 01:13:37,379 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 01:13:37,381 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 01:13:37,396 INFO L274 McrAutomatonBuilder]: Finished intersection with 40 states and 58 transitions. [2020-09-18 01:13:37,397 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 01:13:37,419 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-18 01:13:37,456 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 01:13:37,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-18 01:13:37,457 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 01:13:37,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-18 01:13:37,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-18 01:13:37,458 INFO L87 Difference]: Start difference. First operand 125 states and 265 transitions. Second operand 7 states. [2020-09-18 01:13:37,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 01:13:37,562 INFO L93 Difference]: Finished difference Result 120 states and 253 transitions. [2020-09-18 01:13:37,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-18 01:13:37,563 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-09-18 01:13:37,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 01:13:37,564 INFO L225 Difference]: With dead ends: 120 [2020-09-18 01:13:37,564 INFO L226 Difference]: Without dead ends: 71 [2020-09-18 01:13:37,564 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-09-18 01:13:37,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-09-18 01:13:37,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2020-09-18 01:13:37,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-09-18 01:13:37,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 143 transitions. [2020-09-18 01:13:37,567 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 143 transitions. Word has length 18 [2020-09-18 01:13:37,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 01:13:37,568 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 143 transitions. [2020-09-18 01:13:37,568 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-18 01:13:37,568 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 143 transitions. [2020-09-18 01:13:37,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-18 01:13:37,568 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 01:13:37,569 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] [2020-09-18 01:13:37,569 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-18 01:13:37,569 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 01:13:37,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 01:13:37,570 INFO L82 PathProgramCache]: Analyzing trace with hash 1087350585, now seen corresponding path program 1 times [2020-09-18 01:13:37,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 01:13:37,570 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751719931] [2020-09-18 01:13:37,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 01:13:37,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 01:13:37,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 01:13:37,634 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751719931] [2020-09-18 01:13:37,635 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 01:13:37,635 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-18 01:13:37,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [763466589] [2020-09-18 01:13:37,635 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 01:13:37,638 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 01:13:37,655 INFO L274 McrAutomatonBuilder]: Finished intersection with 44 states and 63 transitions. [2020-09-18 01:13:37,655 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 01:13:37,684 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 01:13:37,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-18 01:13:37,685 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 01:13:37,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-18 01:13:37,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-18 01:13:37,686 INFO L87 Difference]: Start difference. First operand 71 states and 143 transitions. Second operand 4 states. [2020-09-18 01:13:37,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 01:13:37,699 INFO L93 Difference]: Finished difference Result 70 states and 142 transitions. [2020-09-18 01:13:37,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-18 01:13:37,699 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-09-18 01:13:37,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 01:13:37,700 INFO L225 Difference]: With dead ends: 70 [2020-09-18 01:13:37,700 INFO L226 Difference]: Without dead ends: 0 [2020-09-18 01:13:37,700 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-18 01:13:37,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-18 01:13:37,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-18 01:13:37,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-18 01:13:37,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-18 01:13:37,701 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2020-09-18 01:13:37,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 01:13:37,702 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-18 01:13:37,702 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-18 01:13:37,702 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-18 01:13:37,702 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-18 01:13:37,702 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-18 01:13:37,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 01:13:37 BasicIcfg [2020-09-18 01:13:37,707 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-18 01:13:37,712 INFO L168 Benchmark]: Toolchain (without parser) took 5900.21 ms. Allocated memory was 109.1 MB in the beginning and 241.2 MB in the end (delta: 132.1 MB). Free memory was 73.1 MB in the beginning and 183.3 MB in the end (delta: -110.1 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2020-09-18 01:13:37,713 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 109.1 MB. Free memory was 92.4 MB in the beginning and 92.3 MB in the end (delta: 105.1 kB). Peak memory consumption was 105.1 kB. Max. memory is 7.1 GB. [2020-09-18 01:13:37,714 INFO L168 Benchmark]: CACSL2BoogieTranslator took 766.65 ms. Allocated memory was 109.1 MB in the beginning and 164.1 MB in the end (delta: 55.1 MB). Free memory was 72.5 MB in the beginning and 126.1 MB in the end (delta: -53.6 MB). Peak memory consumption was 16.3 MB. Max. memory is 7.1 GB. [2020-09-18 01:13:37,715 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.53 ms. Allocated memory is still 164.1 MB. Free memory was 126.1 MB in the beginning and 123.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. [2020-09-18 01:13:37,715 INFO L168 Benchmark]: Boogie Preprocessor took 30.19 ms. Allocated memory is still 164.1 MB. Free memory was 123.6 MB in the beginning and 122.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-09-18 01:13:37,716 INFO L168 Benchmark]: RCFGBuilder took 515.97 ms. Allocated memory is still 164.1 MB. Free memory was 122.2 MB in the beginning and 98.3 MB in the end (delta: 23.9 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. [2020-09-18 01:13:37,717 INFO L168 Benchmark]: TraceAbstraction took 4515.79 ms. Allocated memory was 164.1 MB in the beginning and 241.2 MB in the end (delta: 77.1 MB). Free memory was 97.8 MB in the beginning and 183.3 MB in the end (delta: -85.5 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-18 01:13:37,721 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 109.1 MB. Free memory was 92.4 MB in the beginning and 92.3 MB in the end (delta: 105.1 kB). Peak memory consumption was 105.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 766.65 ms. Allocated memory was 109.1 MB in the beginning and 164.1 MB in the end (delta: 55.1 MB). Free memory was 72.5 MB in the beginning and 126.1 MB in the end (delta: -53.6 MB). Peak memory consumption was 16.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 57.53 ms. Allocated memory is still 164.1 MB. Free memory was 126.1 MB in the beginning and 123.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 30.19 ms. Allocated memory is still 164.1 MB. Free memory was 123.6 MB in the beginning and 122.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 515.97 ms. Allocated memory is still 164.1 MB. Free memory was 122.2 MB in the beginning and 98.3 MB in the end (delta: 23.9 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4515.79 ms. Allocated memory was 164.1 MB in the beginning and 241.2 MB in the end (delta: 77.1 MB). Free memory was 97.8 MB in the beginning and 183.3 MB in the end (delta: -85.5 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 92 ProgramPointsBefore, 38 ProgramPointsAfterwards, 81 TransitionsBefore, 25 TransitionsAfterwards, 1822 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 45 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 944 VarBasedMoverChecksPositive, 29 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 3093 CheckedPairsTotal, 65 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 80 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.3s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 198 SDtfs, 178 SDslu, 295 SDs, 0 SdLazy, 161 SolverSat, 46 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 128 GetRequests, 92 SyntacticMatches, 6 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=706occurred 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, 9 MinimizatonAttempts, 36 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 127 NumberOfCodeBlocks, 127 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 118 ConstructedInterpolants, 0 QuantifiedInterpolants, 4842 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 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 proved your program to be correct! Received shutdown request...