/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe009_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-17 17:42:15,078 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-17 17:42:15,081 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-17 17:42:15,099 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-17 17:42:15,099 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-17 17:42:15,101 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-17 17:42:15,103 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-17 17:42:15,113 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-17 17:42:15,116 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-17 17:42:15,119 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-17 17:42:15,121 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-17 17:42:15,122 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-17 17:42:15,123 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-17 17:42:15,124 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-17 17:42:15,127 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-17 17:42:15,128 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-17 17:42:15,129 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-17 17:42:15,131 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-17 17:42:15,133 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-17 17:42:15,137 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-17 17:42:15,142 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-17 17:42:15,145 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-17 17:42:15,146 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-17 17:42:15,147 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-17 17:42:15,149 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-17 17:42:15,149 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-17 17:42:15,149 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-17 17:42:15,151 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-17 17:42:15,152 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-17 17:42:15,153 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-17 17:42:15,153 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-17 17:42:15,154 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-17 17:42:15,155 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-17 17:42:15,156 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-17 17:42:15,157 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-17 17:42:15,157 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-17 17:42:15,158 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-17 17:42:15,158 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-17 17:42:15,158 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-17 17:42:15,159 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-17 17:42:15,160 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-17 17:42:15,161 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-04-17 17:42:15,195 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-17 17:42:15,198 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-17 17:42:15,199 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-17 17:42:15,200 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-17 17:42:15,200 INFO L138 SettingsManager]: * Use SBE=true [2020-04-17 17:42:15,200 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-17 17:42:15,200 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-17 17:42:15,201 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-17 17:42:15,201 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-17 17:42:15,201 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-17 17:42:15,204 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-17 17:42:15,204 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-17 17:42:15,204 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-17 17:42:15,204 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-17 17:42:15,204 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-17 17:42:15,204 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-17 17:42:15,205 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-17 17:42:15,205 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-17 17:42:15,205 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-17 17:42:15,205 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-17 17:42:15,205 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-17 17:42:15,206 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 17:42:15,206 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-17 17:42:15,207 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-17 17:42:15,207 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-17 17:42:15,208 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-17 17:42:15,208 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-17 17:42:15,208 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-17 17:42:15,208 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-04-17 17:42:15,208 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-17 17:42:15,470 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-17 17:42:15,490 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-17 17:42:15,495 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-17 17:42:15,497 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-17 17:42:15,497 INFO L275 PluginConnector]: CDTParser initialized [2020-04-17 17:42:15,498 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe009_tso.oepc.i [2020-04-17 17:42:15,571 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06b8fb7dd/3a178f79c89b4d1c8fc840e0c01ed3e6/FLAGe7cea94b5 [2020-04-17 17:42:16,142 INFO L306 CDTParser]: Found 1 translation units. [2020-04-17 17:42:16,143 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe009_tso.oepc.i [2020-04-17 17:42:16,156 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06b8fb7dd/3a178f79c89b4d1c8fc840e0c01ed3e6/FLAGe7cea94b5 [2020-04-17 17:42:16,409 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06b8fb7dd/3a178f79c89b4d1c8fc840e0c01ed3e6 [2020-04-17 17:42:16,418 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-17 17:42:16,441 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-17 17:42:16,442 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-17 17:42:16,442 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-17 17:42:16,446 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-17 17:42:16,447 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 05:42:16" (1/1) ... [2020-04-17 17:42:16,450 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35ac6b99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:42:16, skipping insertion in model container [2020-04-17 17:42:16,450 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 05:42:16" (1/1) ... [2020-04-17 17:42:16,458 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-17 17:42:16,516 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-17 17:42:16,980 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 17:42:16,996 INFO L203 MainTranslator]: Completed pre-run [2020-04-17 17:42:17,076 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 17:42:17,173 INFO L208 MainTranslator]: Completed translation [2020-04-17 17:42:17,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:42:17 WrapperNode [2020-04-17 17:42:17,174 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-17 17:42:17,175 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-17 17:42:17,175 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-17 17:42:17,175 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-17 17:42:17,185 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:42:17" (1/1) ... [2020-04-17 17:42:17,220 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:42:17" (1/1) ... [2020-04-17 17:42:17,238 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-17 17:42:17,239 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-17 17:42:17,239 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-17 17:42:17,239 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-17 17:42:17,249 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:42:17" (1/1) ... [2020-04-17 17:42:17,249 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:42:17" (1/1) ... [2020-04-17 17:42:17,252 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:42:17" (1/1) ... [2020-04-17 17:42:17,252 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:42:17" (1/1) ... [2020-04-17 17:42:17,259 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:42:17" (1/1) ... [2020-04-17 17:42:17,261 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:42:17" (1/1) ... [2020-04-17 17:42:17,263 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:42:17" (1/1) ... [2020-04-17 17:42:17,266 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-17 17:42:17,267 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-17 17:42:17,267 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-17 17:42:17,267 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-17 17:42:17,268 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:42:17" (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 [2020-04-17 17:42:17,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-17 17:42:17,337 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-17 17:42:17,337 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-17 17:42:17,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-17 17:42:17,337 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-17 17:42:17,338 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-17 17:42:17,338 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-17 17:42:17,338 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-17 17:42:17,338 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-17 17:42:17,338 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-17 17:42:17,338 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-17 17:42:17,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-17 17:42:17,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-17 17:42:17,340 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-17 17:42:17,722 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-17 17:42:17,722 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-17 17:42:17,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 05:42:17 BoogieIcfgContainer [2020-04-17 17:42:17,727 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-17 17:42:17,728 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-17 17:42:17,728 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-17 17:42:17,732 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-17 17:42:17,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.04 05:42:16" (1/3) ... [2020-04-17 17:42:17,733 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f0dbddd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 05:42:17, skipping insertion in model container [2020-04-17 17:42:17,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:42:17" (2/3) ... [2020-04-17 17:42:17,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f0dbddd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 05:42:17, skipping insertion in model container [2020-04-17 17:42:17,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 05:42:17" (3/3) ... [2020-04-17 17:42:17,736 INFO L109 eAbstractionObserver]: Analyzing ICFG safe009_tso.oepc.i [2020-04-17 17:42:17,746 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-17 17:42:17,747 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-17 17:42:17,758 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-17 17:42:17,759 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-17 17:42:17,799 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:42:17,800 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:42:17,800 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:42:17,801 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:42:17,801 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:42:17,802 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:42:17,803 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:42:17,803 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:42:17,803 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:42:17,803 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:42:17,804 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:42:17,804 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:42:17,806 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:42:17,806 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:42:17,806 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:42:17,807 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:42:17,807 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:42:17,807 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:42:17,813 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:42:17,813 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:42:17,814 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:42:17,814 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:42:17,822 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:42:17,823 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:42:17,824 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:42:17,824 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:42:17,828 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:42:17,828 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:42:17,828 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:42:17,828 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:42:17,844 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-17 17:42:17,859 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 17:42:17,860 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 17:42:17,860 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 17:42:17,860 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 17:42:17,860 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 17:42:17,860 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 17:42:17,860 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 17:42:17,861 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 17:42:17,876 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 68 transitions, 151 flow [2020-04-17 17:42:17,878 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-04-17 17:42:17,921 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-04-17 17:42:17,921 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 17:42:17,926 INFO L80 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-04-17 17:42:17,929 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-04-17 17:42:17,949 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-04-17 17:42:17,949 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 17:42:17,950 INFO L80 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-04-17 17:42:17,952 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1186 [2020-04-17 17:42:17,953 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 17:42:19,365 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-04-17 17:42:19,651 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 41 [2020-04-17 17:42:19,726 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1951 [2020-04-17 17:42:19,727 INFO L214 etLargeBlockEncoding]: Total number of compositions: 54 [2020-04-17 17:42:19,736 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 20 transitions, 55 flow [2020-04-17 17:42:19,787 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 234 states. [2020-04-17 17:42:19,789 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states. [2020-04-17 17:42:19,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-17 17:42:19,799 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:42:19,800 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:42:19,801 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:42:19,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:42:19,808 INFO L82 PathProgramCache]: Analyzing trace with hash 364476878, now seen corresponding path program 1 times [2020-04-17 17:42:19,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:42:19,820 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241317248] [2020-04-17 17:42:19,821 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:42:20,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:42:20,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:42:20,087 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241317248] [2020-04-17 17:42:20,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:42:20,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 17:42:20,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866601441] [2020-04-17 17:42:20,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 17:42:20,094 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:42:20,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 17:42:20,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 17:42:20,110 INFO L87 Difference]: Start difference. First operand 234 states. Second operand 3 states. [2020-04-17 17:42:20,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:42:20,199 INFO L93 Difference]: Finished difference Result 226 states and 626 transitions. [2020-04-17 17:42:20,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 17:42:20,203 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-17 17:42:20,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:42:20,237 INFO L225 Difference]: With dead ends: 226 [2020-04-17 17:42:20,237 INFO L226 Difference]: Without dead ends: 178 [2020-04-17 17:42:20,240 INFO L678 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 [2020-04-17 17:42:20,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-04-17 17:42:20,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2020-04-17 17:42:20,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-04-17 17:42:20,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 474 transitions. [2020-04-17 17:42:20,305 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 474 transitions. Word has length 8 [2020-04-17 17:42:20,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:42:20,306 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 474 transitions. [2020-04-17 17:42:20,307 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 17:42:20,307 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 474 transitions. [2020-04-17 17:42:20,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-17 17:42:20,308 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:42:20,309 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:42:20,309 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:42:20,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:42:20,309 INFO L82 PathProgramCache]: Analyzing trace with hash -1586119474, now seen corresponding path program 1 times [2020-04-17 17:42:20,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:42:20,310 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657980131] [2020-04-17 17:42:20,310 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:42:20,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:42:20,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:42:20,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657980131] [2020-04-17 17:42:20,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:42:20,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 17:42:20,385 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083972871] [2020-04-17 17:42:20,386 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 17:42:20,387 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:42:20,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 17:42:20,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 17:42:20,387 INFO L87 Difference]: Start difference. First operand 178 states and 474 transitions. Second operand 3 states. [2020-04-17 17:42:20,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:42:20,397 INFO L93 Difference]: Finished difference Result 168 states and 441 transitions. [2020-04-17 17:42:20,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 17:42:20,397 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-04-17 17:42:20,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:42:20,400 INFO L225 Difference]: With dead ends: 168 [2020-04-17 17:42:20,400 INFO L226 Difference]: Without dead ends: 168 [2020-04-17 17:42:20,401 INFO L678 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 [2020-04-17 17:42:20,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-04-17 17:42:20,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2020-04-17 17:42:20,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-04-17 17:42:20,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 441 transitions. [2020-04-17 17:42:20,420 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 441 transitions. Word has length 9 [2020-04-17 17:42:20,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:42:20,421 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 441 transitions. [2020-04-17 17:42:20,421 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 17:42:20,421 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 441 transitions. [2020-04-17 17:42:20,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-17 17:42:20,423 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:42:20,423 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:42:20,423 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:42:20,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:42:20,424 INFO L82 PathProgramCache]: Analyzing trace with hash 113999627, now seen corresponding path program 1 times [2020-04-17 17:42:20,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:42:20,424 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048767048] [2020-04-17 17:42:20,424 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:42:20,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:42:20,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:42:20,489 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048767048] [2020-04-17 17:42:20,490 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:42:20,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 17:42:20,490 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677634475] [2020-04-17 17:42:20,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 17:42:20,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:42:20,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 17:42:20,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 17:42:20,491 INFO L87 Difference]: Start difference. First operand 168 states and 441 transitions. Second operand 4 states. [2020-04-17 17:42:20,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:42:20,519 INFO L93 Difference]: Finished difference Result 240 states and 615 transitions. [2020-04-17 17:42:20,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 17:42:20,519 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-04-17 17:42:20,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:42:20,521 INFO L225 Difference]: With dead ends: 240 [2020-04-17 17:42:20,521 INFO L226 Difference]: Without dead ends: 138 [2020-04-17 17:42:20,522 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 17:42:20,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-04-17 17:42:20,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2020-04-17 17:42:20,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-04-17 17:42:20,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 351 transitions. [2020-04-17 17:42:20,535 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 351 transitions. Word has length 10 [2020-04-17 17:42:20,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:42:20,535 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 351 transitions. [2020-04-17 17:42:20,535 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 17:42:20,535 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 351 transitions. [2020-04-17 17:42:20,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-17 17:42:20,536 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:42:20,537 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:42:20,537 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:42:20,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:42:20,537 INFO L82 PathProgramCache]: Analyzing trace with hash -1925064459, now seen corresponding path program 2 times [2020-04-17 17:42:20,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:42:20,538 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407261807] [2020-04-17 17:42:20,538 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:42:20,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:42:20,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:42:20,597 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407261807] [2020-04-17 17:42:20,598 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:42:20,598 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 17:42:20,599 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169940257] [2020-04-17 17:42:20,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 17:42:20,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:42:20,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 17:42:20,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 17:42:20,600 INFO L87 Difference]: Start difference. First operand 138 states and 351 transitions. Second operand 3 states. [2020-04-17 17:42:20,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:42:20,619 INFO L93 Difference]: Finished difference Result 132 states and 332 transitions. [2020-04-17 17:42:20,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 17:42:20,620 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-04-17 17:42:20,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:42:20,623 INFO L225 Difference]: With dead ends: 132 [2020-04-17 17:42:20,623 INFO L226 Difference]: Without dead ends: 132 [2020-04-17 17:42:20,624 INFO L678 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 [2020-04-17 17:42:20,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-04-17 17:42:20,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2020-04-17 17:42:20,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-04-17 17:42:20,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 332 transitions. [2020-04-17 17:42:20,651 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 332 transitions. Word has length 10 [2020-04-17 17:42:20,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:42:20,651 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 332 transitions. [2020-04-17 17:42:20,652 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 17:42:20,652 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 332 transitions. [2020-04-17 17:42:20,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-17 17:42:20,653 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:42:20,653 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:42:20,653 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:42:20,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:42:20,654 INFO L82 PathProgramCache]: Analyzing trace with hash 452543204, now seen corresponding path program 1 times [2020-04-17 17:42:20,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:42:20,656 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898109051] [2020-04-17 17:42:20,656 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:42:20,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:42:20,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:42:20,735 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898109051] [2020-04-17 17:42:20,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:42:20,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 17:42:20,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64747704] [2020-04-17 17:42:20,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 17:42:20,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:42:20,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 17:42:20,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 17:42:20,738 INFO L87 Difference]: Start difference. First operand 132 states and 332 transitions. Second operand 4 states. [2020-04-17 17:42:20,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:42:20,767 INFO L93 Difference]: Finished difference Result 144 states and 346 transitions. [2020-04-17 17:42:20,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 17:42:20,768 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-17 17:42:20,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:42:20,769 INFO L225 Difference]: With dead ends: 144 [2020-04-17 17:42:20,769 INFO L226 Difference]: Without dead ends: 60 [2020-04-17 17:42:20,771 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 17:42:20,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-04-17 17:42:20,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-04-17 17:42:20,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-04-17 17:42:20,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 129 transitions. [2020-04-17 17:42:20,779 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 129 transitions. Word has length 11 [2020-04-17 17:42:20,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:42:20,780 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 129 transitions. [2020-04-17 17:42:20,780 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 17:42:20,805 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 129 transitions. [2020-04-17 17:42:20,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-17 17:42:20,806 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:42:20,806 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:42:20,806 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:42:20,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:42:20,807 INFO L82 PathProgramCache]: Analyzing trace with hash 1143893480, now seen corresponding path program 1 times [2020-04-17 17:42:20,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:42:20,807 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326858477] [2020-04-17 17:42:20,808 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:42:20,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:42:20,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:42:20,931 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326858477] [2020-04-17 17:42:20,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:42:20,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 17:42:20,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863817866] [2020-04-17 17:42:20,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 17:42:20,933 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:42:20,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 17:42:20,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 17:42:20,934 INFO L87 Difference]: Start difference. First operand 60 states and 129 transitions. Second operand 4 states. [2020-04-17 17:42:20,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:42:20,974 INFO L93 Difference]: Finished difference Result 73 states and 142 transitions. [2020-04-17 17:42:20,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 17:42:20,974 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-17 17:42:20,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:42:20,975 INFO L225 Difference]: With dead ends: 73 [2020-04-17 17:42:20,975 INFO L226 Difference]: Without dead ends: 52 [2020-04-17 17:42:20,975 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 17:42:20,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-04-17 17:42:20,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-04-17 17:42:20,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-04-17 17:42:20,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 101 transitions. [2020-04-17 17:42:20,979 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 101 transitions. Word has length 12 [2020-04-17 17:42:20,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:42:20,979 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 101 transitions. [2020-04-17 17:42:20,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 17:42:20,980 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 101 transitions. [2020-04-17 17:42:20,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-17 17:42:20,980 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:42:20,981 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:42:20,981 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:42:20,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:42:20,981 INFO L82 PathProgramCache]: Analyzing trace with hash -1190230917, now seen corresponding path program 1 times [2020-04-17 17:42:20,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:42:20,982 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514080093] [2020-04-17 17:42:20,982 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:42:20,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:42:21,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:42:21,044 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514080093] [2020-04-17 17:42:21,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:42:21,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 17:42:21,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952449491] [2020-04-17 17:42:21,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 17:42:21,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:42:21,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 17:42:21,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-17 17:42:21,046 INFO L87 Difference]: Start difference. First operand 52 states and 101 transitions. Second operand 5 states. [2020-04-17 17:42:21,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:42:21,088 INFO L93 Difference]: Finished difference Result 53 states and 91 transitions. [2020-04-17 17:42:21,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 17:42:21,089 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-04-17 17:42:21,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:42:21,089 INFO L225 Difference]: With dead ends: 53 [2020-04-17 17:42:21,090 INFO L226 Difference]: Without dead ends: 38 [2020-04-17 17:42:21,090 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-17 17:42:21,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-04-17 17:42:21,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-04-17 17:42:21,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-04-17 17:42:21,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 61 transitions. [2020-04-17 17:42:21,094 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 61 transitions. Word has length 13 [2020-04-17 17:42:21,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:42:21,094 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 61 transitions. [2020-04-17 17:42:21,094 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 17:42:21,094 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 61 transitions. [2020-04-17 17:42:21,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-17 17:42:21,095 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:42:21,095 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:42:21,095 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:42:21,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:42:21,096 INFO L82 PathProgramCache]: Analyzing trace with hash 1757733921, now seen corresponding path program 1 times [2020-04-17 17:42:21,096 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:42:21,096 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331738701] [2020-04-17 17:42:21,096 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:42:21,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:42:21,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:42:21,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331738701] [2020-04-17 17:42:21,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:42:21,161 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 17:42:21,161 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307665241] [2020-04-17 17:42:21,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-17 17:42:21,162 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:42:21,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-17 17:42:21,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-17 17:42:21,163 INFO L87 Difference]: Start difference. First operand 38 states and 61 transitions. Second operand 6 states. [2020-04-17 17:42:21,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:42:21,214 INFO L93 Difference]: Finished difference Result 35 states and 53 transitions. [2020-04-17 17:42:21,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-17 17:42:21,215 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-04-17 17:42:21,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:42:21,216 INFO L225 Difference]: With dead ends: 35 [2020-04-17 17:42:21,216 INFO L226 Difference]: Without dead ends: 29 [2020-04-17 17:42:21,216 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-04-17 17:42:21,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-04-17 17:42:21,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-04-17 17:42:21,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-04-17 17:42:21,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 43 transitions. [2020-04-17 17:42:21,219 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 43 transitions. Word has length 14 [2020-04-17 17:42:21,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:42:21,219 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 43 transitions. [2020-04-17 17:42:21,219 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-17 17:42:21,219 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 43 transitions. [2020-04-17 17:42:21,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-17 17:42:21,220 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:42:21,220 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:42:21,220 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:42:21,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:42:21,221 INFO L82 PathProgramCache]: Analyzing trace with hash 1250665313, now seen corresponding path program 1 times [2020-04-17 17:42:21,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:42:21,221 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324974359] [2020-04-17 17:42:21,221 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:42:21,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:42:21,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:42:21,248 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324974359] [2020-04-17 17:42:21,248 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:42:21,248 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 17:42:21,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537429555] [2020-04-17 17:42:21,249 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 17:42:21,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:42:21,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 17:42:21,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 17:42:21,250 INFO L87 Difference]: Start difference. First operand 29 states and 43 transitions. Second operand 3 states. [2020-04-17 17:42:21,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:42:21,256 INFO L93 Difference]: Finished difference Result 28 states and 42 transitions. [2020-04-17 17:42:21,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 17:42:21,257 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-04-17 17:42:21,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:42:21,257 INFO L225 Difference]: With dead ends: 28 [2020-04-17 17:42:21,257 INFO L226 Difference]: Without dead ends: 0 [2020-04-17 17:42:21,258 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 17:42:21,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-17 17:42:21,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-17 17:42:21,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-17 17:42:21,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-17 17:42:21,259 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-04-17 17:42:21,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:42:21,259 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-17 17:42:21,259 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 17:42:21,259 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-17 17:42:21,259 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-17 17:42:21,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.04 05:42:21 BasicIcfg [2020-04-17 17:42:21,263 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-17 17:42:21,266 INFO L168 Benchmark]: Toolchain (without parser) took 4845.71 ms. Allocated memory was 146.8 MB in the beginning and 244.8 MB in the end (delta: 98.0 MB). Free memory was 102.9 MB in the beginning and 154.6 MB in the end (delta: -51.6 MB). Peak memory consumption was 46.4 MB. Max. memory is 7.1 GB. [2020-04-17 17:42:21,266 INFO L168 Benchmark]: CDTParser took 0.54 ms. Allocated memory is still 146.8 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-17 17:42:21,268 INFO L168 Benchmark]: CACSL2BoogieTranslator took 732.51 ms. Allocated memory was 146.8 MB in the beginning and 205.5 MB in the end (delta: 58.7 MB). Free memory was 100.9 MB in the beginning and 160.5 MB in the end (delta: -59.6 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. [2020-04-17 17:42:21,268 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.77 ms. Allocated memory is still 205.5 MB. Free memory was 160.5 MB in the beginning and 157.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-04-17 17:42:21,269 INFO L168 Benchmark]: Boogie Preprocessor took 27.60 ms. Allocated memory is still 205.5 MB. Free memory was 157.9 MB in the beginning and 156.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-17 17:42:21,270 INFO L168 Benchmark]: RCFGBuilder took 460.12 ms. Allocated memory is still 205.5 MB. Free memory was 156.6 MB in the beginning and 134.9 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. [2020-04-17 17:42:21,271 INFO L168 Benchmark]: TraceAbstraction took 3535.33 ms. Allocated memory was 205.5 MB in the beginning and 244.8 MB in the end (delta: 39.3 MB). Free memory was 134.2 MB in the beginning and 154.6 MB in the end (delta: -20.4 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. [2020-04-17 17:42:21,284 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.54 ms. Allocated memory is still 146.8 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 732.51 ms. Allocated memory was 146.8 MB in the beginning and 205.5 MB in the end (delta: 58.7 MB). Free memory was 100.9 MB in the beginning and 160.5 MB in the end (delta: -59.6 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 63.77 ms. Allocated memory is still 205.5 MB. Free memory was 160.5 MB in the beginning and 157.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.60 ms. Allocated memory is still 205.5 MB. Free memory was 157.9 MB in the beginning and 156.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 460.12 ms. Allocated memory is still 205.5 MB. Free memory was 156.6 MB in the beginning and 134.9 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3535.33 ms. Allocated memory was 205.5 MB in the beginning and 244.8 MB in the end (delta: 39.3 MB). Free memory was 134.2 MB in the beginning and 154.6 MB in the end (delta: -20.4 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.8s, 76 ProgramPointsBefore, 30 ProgramPointsAfterwards, 68 TransitionsBefore, 20 TransitionsAfterwards, 1186 CoEnabledTransitionPairs, 7 FixpointIterations, 13 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 634 VarBasedMoverChecksPositive, 25 VarBasedMoverChecksNegative, 7 SemBasedMoverChecksPositive, 26 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 1951 CheckedPairsTotal, 54 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 4 procedures, 67 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.4s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 144 SDtfs, 109 SDslu, 138 SDs, 0 SdLazy, 100 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=234occurred 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 103 NumberOfCodeBlocks, 103 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 94 ConstructedInterpolants, 0 QuantifiedInterpolants, 3162 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...