./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe005_tso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/safe005_tso.oepc.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a98efdb890cc67e6bdb2fdbd436dce0b396ed15e ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 03:03:30,105 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 03:03:30,108 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 03:03:30,131 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 03:03:30,132 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 03:03:30,133 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 03:03:30,134 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 03:03:30,136 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 03:03:30,138 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 03:03:30,139 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 03:03:30,140 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 03:03:30,141 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 03:03:30,141 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 03:03:30,142 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 03:03:30,143 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 03:03:30,145 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 03:03:30,145 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 03:03:30,146 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 03:03:30,148 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 03:03:30,150 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 03:03:30,158 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 03:03:30,159 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 03:03:30,160 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 03:03:30,161 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 03:03:30,167 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 03:03:30,167 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 03:03:30,167 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 03:03:30,168 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 03:03:30,168 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 03:03:30,171 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 03:03:30,171 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 03:03:30,171 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 03:03:30,173 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 03:03:30,175 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 03:03:30,176 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 03:03:30,177 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 03:03:30,178 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 03:03:30,178 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 03:03:30,178 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 03:03:30,179 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 03:03:30,182 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 03:03:30,187 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 03:03:30,230 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 03:03:30,231 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 03:03:30,232 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 03:03:30,233 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 03:03:30,233 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 03:03:30,233 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 03:03:30,234 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 03:03:30,234 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 03:03:30,234 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 03:03:30,234 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 03:03:30,235 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 03:03:30,236 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 03:03:30,236 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 03:03:30,236 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 03:03:30,237 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 03:03:30,237 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 03:03:30,237 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 03:03:30,237 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 03:03:30,238 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 03:03:30,238 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 03:03:30,238 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 03:03:30,238 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 03:03:30,239 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 03:03:30,239 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 03:03:30,239 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 03:03:30,239 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 03:03:30,240 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 03:03:30,240 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 03:03:30,240 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 03:03:30,240 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a98efdb890cc67e6bdb2fdbd436dce0b396ed15e [2020-10-20 03:03:30,453 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 03:03:30,466 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 03:03:30,470 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 03:03:30,471 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 03:03:30,472 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 03:03:30,473 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe005_tso.oepc.i [2020-10-20 03:03:30,549 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cbbd81182/c426d15804cb42b49d2cbd689e3e5d22/FLAG2c05f3dbc [2020-10-20 03:03:31,120 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 03:03:31,121 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe005_tso.oepc.i [2020-10-20 03:03:31,147 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cbbd81182/c426d15804cb42b49d2cbd689e3e5d22/FLAG2c05f3dbc [2020-10-20 03:03:31,410 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cbbd81182/c426d15804cb42b49d2cbd689e3e5d22 [2020-10-20 03:03:31,413 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 03:03:31,420 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 03:03:31,422 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 03:03:31,422 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 03:03:31,425 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 03:03:31,427 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 03:03:31" (1/1) ... [2020-10-20 03:03:31,430 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6abdebc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:03:31, skipping insertion in model container [2020-10-20 03:03:31,430 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 03:03:31" (1/1) ... [2020-10-20 03:03:31,438 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 03:03:31,502 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 03:03:31,935 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 03:03:31,946 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 03:03:31,995 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 03:03:32,078 INFO L208 MainTranslator]: Completed translation [2020-10-20 03:03:32,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:03:32 WrapperNode [2020-10-20 03:03:32,079 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 03:03:32,080 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 03:03:32,080 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 03:03:32,080 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 03:03:32,089 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:03:32" (1/1) ... [2020-10-20 03:03:32,105 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:03:32" (1/1) ... [2020-10-20 03:03:32,125 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 03:03:32,125 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 03:03:32,126 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 03:03:32,126 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 03:03:32,133 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:03:32" (1/1) ... [2020-10-20 03:03:32,133 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:03:32" (1/1) ... [2020-10-20 03:03:32,136 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:03:32" (1/1) ... [2020-10-20 03:03:32,136 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:03:32" (1/1) ... [2020-10-20 03:03:32,145 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:03:32" (1/1) ... [2020-10-20 03:03:32,149 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:03:32" (1/1) ... [2020-10-20 03:03:32,151 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:03:32" (1/1) ... [2020-10-20 03:03:32,159 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 03:03:32,161 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 03:03:32,161 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 03:03:32,161 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 03:03:32,162 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:03:32" (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 [2020-10-20 03:03:32,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 03:03:32,238 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-20 03:03:32,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 03:03:32,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 03:03:32,239 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-20 03:03:32,239 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-20 03:03:32,239 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-20 03:03:32,239 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-20 03:03:32,239 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-20 03:03:32,240 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-20 03:03:32,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 03:03:32,240 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-20 03:03:32,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 03:03:32,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 03:03:32,242 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-20 03:03:32,620 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 03:03:32,620 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-20 03:03:32,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:03:32 BoogieIcfgContainer [2020-10-20 03:03:32,623 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 03:03:32,625 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 03:03:32,625 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 03:03:32,629 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 03:03:32,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 03:03:31" (1/3) ... [2020-10-20 03:03:32,630 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44269c63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 03:03:32, skipping insertion in model container [2020-10-20 03:03:32,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:03:32" (2/3) ... [2020-10-20 03:03:32,631 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44269c63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 03:03:32, skipping insertion in model container [2020-10-20 03:03:32,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:03:32" (3/3) ... [2020-10-20 03:03:32,632 INFO L111 eAbstractionObserver]: Analyzing ICFG safe005_tso.oepc.i [2020-10-20 03:03:32,645 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-20 03:03:32,645 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 03:03:32,652 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 03:03:32,653 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-20 03:03:32,683 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:32,684 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:32,684 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:32,684 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:32,685 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:32,685 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:32,686 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:32,686 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:32,686 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:32,686 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:32,687 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:32,687 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:32,687 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:32,688 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:32,688 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:32,688 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:32,689 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:32,689 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:32,693 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:32,693 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:32,693 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:32,694 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:32,704 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:32,705 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:32,705 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:32,706 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:32,711 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:32,712 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:32,712 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:32,712 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:32,721 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-20 03:03:32,736 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-20 03:03:32,763 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 03:03:32,764 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 03:03:32,764 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 03:03:32,765 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 03:03:32,766 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 03:03:32,766 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 03:03:32,766 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 03:03:32,766 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 03:03:32,793 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-20 03:03:32,797 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 79 transitions, 173 flow [2020-10-20 03:03:32,800 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 79 transitions, 173 flow [2020-10-20 03:03:32,802 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 86 places, 79 transitions, 173 flow [2020-10-20 03:03:32,876 INFO L129 PetriNetUnfolder]: 3/76 cut-off events. [2020-10-20 03:03:32,877 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-20 03:03:32,884 INFO L80 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 76 events. 3/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 62 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-10-20 03:03:32,889 INFO L117 LiptonReduction]: Number of co-enabled transitions 1440 [2020-10-20 03:03:34,933 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-10-20 03:03:35,145 INFO L132 LiptonReduction]: Checked pairs total: 2926 [2020-10-20 03:03:35,146 INFO L134 LiptonReduction]: Total number of compositions: 72 [2020-10-20 03:03:35,153 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-10-20 03:03:35,181 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-10-20 03:03:35,183 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-10-20 03:03:35,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-20 03:03:35,192 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:03:35,192 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:03:35,193 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:03:35,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:03:35,198 INFO L82 PathProgramCache]: Analyzing trace with hash -1098074663, now seen corresponding path program 1 times [2020-10-20 03:03:35,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:03:35,207 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860882304] [2020-10-20 03:03:35,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:03:35,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:03:35,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:03:35,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860882304] [2020-10-20 03:03:35,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:03:35,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-20 03:03:35,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012028664] [2020-10-20 03:03:35,426 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 03:03:35,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:03:35,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 03:03:35,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 03:03:35,445 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-10-20 03:03:35,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:03:35,499 INFO L93 Difference]: Finished difference Result 266 states and 752 transitions. [2020-10-20 03:03:35,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 03:03:35,502 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-20 03:03:35,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:03:35,529 INFO L225 Difference]: With dead ends: 266 [2020-10-20 03:03:35,529 INFO L226 Difference]: Without dead ends: 202 [2020-10-20 03:03:35,531 INFO L677 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 [2020-10-20 03:03:35,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-20 03:03:35,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-10-20 03:03:35,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-10-20 03:03:35,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-10-20 03:03:35,634 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 8 [2020-10-20 03:03:35,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:03:35,636 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-10-20 03:03:35,636 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 03:03:35,637 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-10-20 03:03:35,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 03:03:35,640 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:03:35,641 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:03:35,641 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 03:03:35,642 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:03:35,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:03:35,642 INFO L82 PathProgramCache]: Analyzing trace with hash 1311186850, now seen corresponding path program 1 times [2020-10-20 03:03:35,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:03:35,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158332528] [2020-10-20 03:03:35,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:03:35,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:03:35,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:03:35,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158332528] [2020-10-20 03:03:35,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:03:35,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 03:03:35,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835828569] [2020-10-20 03:03:35,773 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 03:03:35,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:03:35,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 03:03:35,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 03:03:35,774 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 4 states. [2020-10-20 03:03:35,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:03:35,805 INFO L93 Difference]: Finished difference Result 254 states and 666 transitions. [2020-10-20 03:03:35,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 03:03:35,806 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-20 03:03:35,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:03:35,808 INFO L225 Difference]: With dead ends: 254 [2020-10-20 03:03:35,809 INFO L226 Difference]: Without dead ends: 190 [2020-10-20 03:03:35,809 INFO L677 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 [2020-10-20 03:03:35,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-10-20 03:03:35,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2020-10-20 03:03:35,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-10-20 03:03:35,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 502 transitions. [2020-10-20 03:03:35,825 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 502 transitions. Word has length 10 [2020-10-20 03:03:35,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:03:35,825 INFO L481 AbstractCegarLoop]: Abstraction has 190 states and 502 transitions. [2020-10-20 03:03:35,825 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 03:03:35,826 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 502 transitions. [2020-10-20 03:03:35,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 03:03:35,827 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:03:35,827 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:03:35,828 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 03:03:35,828 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:03:35,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:03:35,828 INFO L82 PathProgramCache]: Analyzing trace with hash -1456303369, now seen corresponding path program 1 times [2020-10-20 03:03:35,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:03:35,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505436766] [2020-10-20 03:03:35,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:03:35,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:03:35,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:03:35,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505436766] [2020-10-20 03:03:35,922 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:03:35,922 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 03:03:35,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833532855] [2020-10-20 03:03:35,923 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 03:03:35,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:03:35,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 03:03:35,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 03:03:35,924 INFO L87 Difference]: Start difference. First operand 190 states and 502 transitions. Second operand 4 states. [2020-10-20 03:03:35,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:03:35,960 INFO L93 Difference]: Finished difference Result 286 states and 722 transitions. [2020-10-20 03:03:35,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 03:03:35,960 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-20 03:03:35,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:03:35,963 INFO L225 Difference]: With dead ends: 286 [2020-10-20 03:03:35,963 INFO L226 Difference]: Without dead ends: 178 [2020-10-20 03:03:35,963 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:03:35,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-10-20 03:03:35,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 154. [2020-10-20 03:03:35,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-20 03:03:35,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 376 transitions. [2020-10-20 03:03:35,976 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 376 transitions. Word has length 11 [2020-10-20 03:03:35,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:03:35,977 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 376 transitions. [2020-10-20 03:03:35,977 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 03:03:35,977 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 376 transitions. [2020-10-20 03:03:35,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-20 03:03:35,979 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:03:35,979 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:03:35,980 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 03:03:35,980 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:03:35,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:03:35,981 INFO L82 PathProgramCache]: Analyzing trace with hash -337791903, now seen corresponding path program 1 times [2020-10-20 03:03:35,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:03:35,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487647427] [2020-10-20 03:03:35,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:03:35,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:03:36,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:03:36,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487647427] [2020-10-20 03:03:36,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:03:36,022 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 03:03:36,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234703956] [2020-10-20 03:03:36,022 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 03:03:36,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:03:36,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 03:03:36,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 03:03:36,024 INFO L87 Difference]: Start difference. First operand 154 states and 376 transitions. Second operand 3 states. [2020-10-20 03:03:36,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:03:36,037 INFO L93 Difference]: Finished difference Result 174 states and 416 transitions. [2020-10-20 03:03:36,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 03:03:36,038 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-10-20 03:03:36,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:03:36,039 INFO L225 Difference]: With dead ends: 174 [2020-10-20 03:03:36,039 INFO L226 Difference]: Without dead ends: 72 [2020-10-20 03:03:36,039 INFO L677 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 [2020-10-20 03:03:36,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-20 03:03:36,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-10-20 03:03:36,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-20 03:03:36,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 154 transitions. [2020-10-20 03:03:36,045 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 154 transitions. Word has length 12 [2020-10-20 03:03:36,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:03:36,046 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 154 transitions. [2020-10-20 03:03:36,046 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 03:03:36,046 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 154 transitions. [2020-10-20 03:03:36,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-20 03:03:36,047 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:03:36,047 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:03:36,048 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 03:03:36,048 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:03:36,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:03:36,048 INFO L82 PathProgramCache]: Analyzing trace with hash -1881630110, now seen corresponding path program 1 times [2020-10-20 03:03:36,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:03:36,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641605846] [2020-10-20 03:03:36,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:03:36,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:03:36,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:03:36,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641605846] [2020-10-20 03:03:36,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:03:36,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 03:03:36,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138378535] [2020-10-20 03:03:36,151 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 03:03:36,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:03:36,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 03:03:36,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 03:03:36,156 INFO L87 Difference]: Start difference. First operand 72 states and 154 transitions. Second operand 4 states. [2020-10-20 03:03:36,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:03:36,200 INFO L93 Difference]: Finished difference Result 85 states and 167 transitions. [2020-10-20 03:03:36,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 03:03:36,201 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-20 03:03:36,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:03:36,201 INFO L225 Difference]: With dead ends: 85 [2020-10-20 03:03:36,202 INFO L226 Difference]: Without dead ends: 61 [2020-10-20 03:03:36,202 INFO L677 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 [2020-10-20 03:03:36,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-20 03:03:36,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-10-20 03:03:36,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-20 03:03:36,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 118 transitions. [2020-10-20 03:03:36,217 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 118 transitions. Word has length 13 [2020-10-20 03:03:36,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:03:36,217 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 118 transitions. [2020-10-20 03:03:36,218 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 03:03:36,218 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 118 transitions. [2020-10-20 03:03:36,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-20 03:03:36,219 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:03:36,219 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:03:36,219 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 03:03:36,219 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:03:36,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:03:36,220 INFO L82 PathProgramCache]: Analyzing trace with hash 1813720345, now seen corresponding path program 1 times [2020-10-20 03:03:36,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:03:36,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234237242] [2020-10-20 03:03:36,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:03:36,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:03:36,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:03:36,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234237242] [2020-10-20 03:03:36,314 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:03:36,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 03:03:36,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607241749] [2020-10-20 03:03:36,316 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 03:03:36,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:03:36,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 03:03:36,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:03:36,316 INFO L87 Difference]: Start difference. First operand 61 states and 118 transitions. Second operand 5 states. [2020-10-20 03:03:36,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:03:36,374 INFO L93 Difference]: Finished difference Result 62 states and 108 transitions. [2020-10-20 03:03:36,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 03:03:36,374 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-20 03:03:36,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:03:36,375 INFO L225 Difference]: With dead ends: 62 [2020-10-20 03:03:36,375 INFO L226 Difference]: Without dead ends: 47 [2020-10-20 03:03:36,376 INFO L677 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 [2020-10-20 03:03:36,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-20 03:03:36,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-10-20 03:03:36,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-20 03:03:36,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 78 transitions. [2020-10-20 03:03:36,379 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 78 transitions. Word has length 14 [2020-10-20 03:03:36,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:03:36,380 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 78 transitions. [2020-10-20 03:03:36,380 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 03:03:36,380 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 78 transitions. [2020-10-20 03:03:36,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-20 03:03:36,381 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:03:36,381 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:03:36,381 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-20 03:03:36,382 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:03:36,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:03:36,382 INFO L82 PathProgramCache]: Analyzing trace with hash 391097630, now seen corresponding path program 1 times [2020-10-20 03:03:36,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:03:36,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142621846] [2020-10-20 03:03:36,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:03:36,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:03:36,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:03:36,444 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142621846] [2020-10-20 03:03:36,444 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:03:36,445 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 03:03:36,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577642700] [2020-10-20 03:03:36,445 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 03:03:36,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:03:36,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 03:03:36,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-20 03:03:36,446 INFO L87 Difference]: Start difference. First operand 47 states and 78 transitions. Second operand 6 states. [2020-10-20 03:03:36,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:03:36,498 INFO L93 Difference]: Finished difference Result 44 states and 70 transitions. [2020-10-20 03:03:36,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 03:03:36,499 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-20 03:03:36,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:03:36,500 INFO L225 Difference]: With dead ends: 44 [2020-10-20 03:03:36,500 INFO L226 Difference]: Without dead ends: 38 [2020-10-20 03:03:36,500 INFO L677 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 [2020-10-20 03:03:36,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-20 03:03:36,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-10-20 03:03:36,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-20 03:03:36,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 60 transitions. [2020-10-20 03:03:36,503 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 60 transitions. Word has length 15 [2020-10-20 03:03:36,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:03:36,503 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 60 transitions. [2020-10-20 03:03:36,503 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 03:03:36,504 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 60 transitions. [2020-10-20 03:03:36,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-20 03:03:36,505 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:03:36,505 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:03:36,505 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-20 03:03:36,506 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:03:36,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:03:36,506 INFO L82 PathProgramCache]: Analyzing trace with hash -2114303388, now seen corresponding path program 1 times [2020-10-20 03:03:36,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:03:36,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50711559] [2020-10-20 03:03:36,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:03:36,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:03:36,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:03:36,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50711559] [2020-10-20 03:03:36,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:03:36,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 03:03:36,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193022239] [2020-10-20 03:03:36,545 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 03:03:36,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:03:36,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 03:03:36,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 03:03:36,546 INFO L87 Difference]: Start difference. First operand 38 states and 60 transitions. Second operand 4 states. [2020-10-20 03:03:36,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:03:36,558 INFO L93 Difference]: Finished difference Result 37 states and 59 transitions. [2020-10-20 03:03:36,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 03:03:36,559 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-20 03:03:36,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:03:36,559 INFO L225 Difference]: With dead ends: 37 [2020-10-20 03:03:36,559 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 03:03:36,560 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:03:36,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 03:03:36,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 03:03:36,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 03:03:36,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 03:03:36,561 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-20 03:03:36,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:03:36,561 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 03:03:36,561 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 03:03:36,561 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 03:03:36,562 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 03:03:36,562 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-20 03:03:36,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 03:03:36 BasicIcfg [2020-10-20 03:03:36,566 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 03:03:36,567 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 03:03:36,567 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 03:03:36,567 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 03:03:36,568 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:03:32" (3/4) ... [2020-10-20 03:03:36,572 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 03:03:36,580 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-10-20 03:03:36,580 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-10-20 03:03:36,580 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-10-20 03:03:36,586 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-10-20 03:03:36,586 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-20 03:03:36,586 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 03:03:36,587 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 03:03:36,642 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 03:03:36,642 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 03:03:36,644 INFO L168 Benchmark]: Toolchain (without parser) took 5229.36 ms. Allocated memory was 36.7 MB in the beginning and 79.7 MB in the end (delta: 43.0 MB). Free memory was 15.4 MB in the beginning and 56.6 MB in the end (delta: -41.2 MB). Peak memory consumption was 46.3 MB. Max. memory is 14.3 GB. [2020-10-20 03:03:36,645 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 34.1 MB. Free memory was 9.9 MB in the beginning and 9.8 MB in the end (delta: 65.7 kB). Peak memory consumption was 65.7 kB. Max. memory is 14.3 GB. [2020-10-20 03:03:36,646 INFO L168 Benchmark]: CACSL2BoogieTranslator took 657.68 ms. Allocated memory was 36.7 MB in the beginning and 46.7 MB in the end (delta: 10.0 MB). Free memory was 14.5 MB in the beginning and 17.9 MB in the end (delta: -3.4 MB). Peak memory consumption was 14.1 MB. Max. memory is 14.3 GB. [2020-10-20 03:03:36,647 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.42 ms. Allocated memory is still 46.7 MB. Free memory was 17.9 MB in the beginning and 15.7 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 14.3 GB. [2020-10-20 03:03:36,648 INFO L168 Benchmark]: Boogie Preprocessor took 33.41 ms. Allocated memory is still 46.7 MB. Free memory was 15.7 MB in the beginning and 13.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. [2020-10-20 03:03:36,649 INFO L168 Benchmark]: RCFGBuilder took 462.21 ms. Allocated memory was 46.7 MB in the beginning and 48.8 MB in the end (delta: 2.1 MB). Free memory was 13.9 MB in the beginning and 24.6 MB in the end (delta: -10.7 MB). Peak memory consumption was 3.7 MB. Max. memory is 14.3 GB. [2020-10-20 03:03:36,650 INFO L168 Benchmark]: TraceAbstraction took 3941.67 ms. Allocated memory was 48.8 MB in the beginning and 76.0 MB in the end (delta: 27.3 MB). Free memory was 24.0 MB in the beginning and 9.3 MB in the end (delta: 14.6 MB). Peak memory consumption was 41.9 MB. Max. memory is 14.3 GB. [2020-10-20 03:03:36,651 INFO L168 Benchmark]: Witness Printer took 75.94 ms. Allocated memory was 76.0 MB in the beginning and 79.7 MB in the end (delta: 3.7 MB). Free memory was 9.3 MB in the beginning and 56.6 MB in the end (delta: -47.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 14.3 GB. [2020-10-20 03:03:36,663 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 34.1 MB. Free memory was 9.9 MB in the beginning and 9.8 MB in the end (delta: 65.7 kB). Peak memory consumption was 65.7 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 657.68 ms. Allocated memory was 36.7 MB in the beginning and 46.7 MB in the end (delta: 10.0 MB). Free memory was 14.5 MB in the beginning and 17.9 MB in the end (delta: -3.4 MB). Peak memory consumption was 14.1 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 45.42 ms. Allocated memory is still 46.7 MB. Free memory was 17.9 MB in the beginning and 15.7 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 33.41 ms. Allocated memory is still 46.7 MB. Free memory was 15.7 MB in the beginning and 13.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. * RCFGBuilder took 462.21 ms. Allocated memory was 46.7 MB in the beginning and 48.8 MB in the end (delta: 2.1 MB). Free memory was 13.9 MB in the beginning and 24.6 MB in the end (delta: -10.7 MB). Peak memory consumption was 3.7 MB. Max. memory is 14.3 GB. * TraceAbstraction took 3941.67 ms. Allocated memory was 48.8 MB in the beginning and 76.0 MB in the end (delta: 27.3 MB). Free memory was 24.0 MB in the beginning and 9.3 MB in the end (delta: 14.6 MB). Peak memory consumption was 41.9 MB. Max. memory is 14.3 GB. * Witness Printer took 75.94 ms. Allocated memory was 76.0 MB in the beginning and 79.7 MB in the end (delta: 3.7 MB). Free memory was 9.3 MB in the beginning and 56.6 MB in the end (delta: -47.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1009 VarBasedMoverChecksPositive, 52 VarBasedMoverChecksNegative, 13 SemBasedMoverChecksPositive, 39 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 75 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.3s, 86 PlacesBefore, 31 PlacesAfterwards, 79 TransitionsBefore, 22 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 44 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 2 ChoiceCompositions, 72 TotalNumberOfCompositions, 2926 MoverChecksTotal - PositiveResult [Line: 17]: 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, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.8s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.4s, HoareTripleCheckerStatistics: 156 SDtfs, 122 SDslu, 177 SDs, 0 SdLazy, 115 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred 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, 8 MinimizatonAttempts, 24 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 100 NumberOfCodeBlocks, 100 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 92 ConstructedInterpolants, 0 QuantifiedInterpolants, 3166 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...