./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe035_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 54858612 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_1.5.800.v20200727-1323.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/safe035_tso.opt.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 32935a3786295b4ca9a51ffc083c82e75ec24a5d ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-26 00:34:23,902 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 00:34:23,905 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 00:34:23,951 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 00:34:23,952 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 00:34:23,953 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 00:34:23,955 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 00:34:23,958 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 00:34:23,960 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 00:34:23,961 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 00:34:23,963 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 00:34:23,964 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 00:34:23,965 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 00:34:23,966 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 00:34:23,968 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 00:34:23,969 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 00:34:23,970 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 00:34:23,972 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 00:34:23,974 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 00:34:23,977 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 00:34:23,978 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 00:34:23,980 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 00:34:23,981 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 00:34:23,982 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 00:34:23,986 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 00:34:23,986 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 00:34:23,987 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 00:34:23,988 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 00:34:23,989 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 00:34:23,990 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 00:34:23,991 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 00:34:23,992 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 00:34:23,993 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 00:34:23,994 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 00:34:23,995 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 00:34:23,996 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 00:34:23,997 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 00:34:23,997 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 00:34:23,998 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 00:34:23,999 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 00:34:24,000 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 00:34:24,001 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-26 00:34:24,045 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 00:34:24,047 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 00:34:24,051 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 00:34:24,052 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 00:34:24,052 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 00:34:24,052 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 00:34:24,053 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 00:34:24,053 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 00:34:24,053 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 00:34:24,057 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 00:34:24,058 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 00:34:24,059 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 00:34:24,059 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 00:34:24,060 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 00:34:24,060 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 00:34:24,060 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 00:34:24,061 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 00:34:24,061 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 00:34:24,061 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 00:34:24,062 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 00:34:24,062 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 00:34:24,062 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 00:34:24,063 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 00:34:24,063 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 00:34:24,063 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 00:34:24,064 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 00:34:24,064 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 00:34:24,064 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 00:34:24,064 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 00:34:24,065 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 32935a3786295b4ca9a51ffc083c82e75ec24a5d [2020-10-26 00:34:24,543 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 00:34:24,581 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 00:34:24,585 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 00:34:24,587 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 00:34:24,588 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 00:34:24,590 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe035_tso.opt.i [2020-10-26 00:34:24,683 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87b7b4267/8ccc706007314ca5a3fc3171cb4e3067/FLAG1eeb5d397 [2020-10-26 00:34:25,426 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 00:34:25,427 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe035_tso.opt.i [2020-10-26 00:34:25,448 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87b7b4267/8ccc706007314ca5a3fc3171cb4e3067/FLAG1eeb5d397 [2020-10-26 00:34:25,667 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87b7b4267/8ccc706007314ca5a3fc3171cb4e3067 [2020-10-26 00:34:25,670 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 00:34:25,677 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-26 00:34:25,679 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 00:34:25,679 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 00:34:25,683 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 00:34:25,684 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 12:34:25" (1/1) ... [2020-10-26 00:34:25,689 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28bb1e1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:34:25, skipping insertion in model container [2020-10-26 00:34:25,689 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 12:34:25" (1/1) ... [2020-10-26 00:34:25,701 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 00:34:25,748 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 00:34:26,182 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 00:34:26,199 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 00:34:26,255 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 00:34:26,386 INFO L208 MainTranslator]: Completed translation [2020-10-26 00:34:26,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:34:26 WrapperNode [2020-10-26 00:34:26,388 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 00:34:26,389 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-26 00:34:26,390 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-26 00:34:26,390 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-26 00:34:26,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:34:26" (1/1) ... [2020-10-26 00:34:26,450 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:34:26" (1/1) ... [2020-10-26 00:34:26,498 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-26 00:34:26,499 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 00:34:26,499 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 00:34:26,500 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 00:34:26,512 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:34:26" (1/1) ... [2020-10-26 00:34:26,513 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:34:26" (1/1) ... [2020-10-26 00:34:26,516 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:34:26" (1/1) ... [2020-10-26 00:34:26,517 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:34:26" (1/1) ... [2020-10-26 00:34:26,523 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:34:26" (1/1) ... [2020-10-26 00:34:26,527 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:34:26" (1/1) ... [2020-10-26 00:34:26,529 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:34:26" (1/1) ... [2020-10-26 00:34:26,534 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 00:34:26,535 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 00:34:26,536 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 00:34:26,536 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 00:34:26,537 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:34:26" (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 [2020-10-26 00:34:26,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 00:34:26,637 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-26 00:34:26,637 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 00:34:26,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 00:34:26,638 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-26 00:34:26,638 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-26 00:34:26,638 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-26 00:34:26,638 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-26 00:34:26,638 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-26 00:34:26,639 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-26 00:34:26,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 00:34:26,639 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-26 00:34:26,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 00:34:26,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 00:34:26,641 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-26 00:34:27,151 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 00:34:27,151 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-26 00:34:27,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 12:34:27 BoogieIcfgContainer [2020-10-26 00:34:27,154 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 00:34:27,156 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 00:34:27,156 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 00:34:27,160 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 00:34:27,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 12:34:25" (1/3) ... [2020-10-26 00:34:27,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59314780 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 12:34:27, skipping insertion in model container [2020-10-26 00:34:27,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:34:26" (2/3) ... [2020-10-26 00:34:27,162 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59314780 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 12:34:27, skipping insertion in model container [2020-10-26 00:34:27,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 12:34:27" (3/3) ... [2020-10-26 00:34:27,164 INFO L111 eAbstractionObserver]: Analyzing ICFG safe035_tso.opt.i [2020-10-26 00:34:27,184 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-26 00:34:27,184 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-26 00:34:27,191 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 00:34:27,192 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-26 00:34:27,220 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:34:27,220 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:34:27,220 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:34:27,221 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:34:27,221 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:34:27,222 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:34:27,222 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:34:27,222 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:34:27,223 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:34:27,223 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:34:27,223 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:34:27,224 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:34:27,224 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:34:27,224 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:34:27,225 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:34:27,225 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:34:27,225 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:34:27,226 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:34:27,228 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:34:27,229 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:34:27,229 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:34:27,229 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:34:27,237 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:34:27,237 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:34:27,237 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:34:27,238 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:34:27,240 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:34:27,241 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:34:27,241 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:34:27,241 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:34:27,243 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-26 00:34:27,257 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-26 00:34:27,282 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 00:34:27,283 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 00:34:27,283 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-26 00:34:27,283 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 00:34:27,283 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 00:34:27,284 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 00:34:27,284 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 00:34:27,284 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 00:34:27,297 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-26 00:34:27,300 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 79 transitions, 173 flow [2020-10-26 00:34:27,304 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 79 transitions, 173 flow [2020-10-26 00:34:27,306 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 86 places, 79 transitions, 173 flow [2020-10-26 00:34:27,357 INFO L129 PetriNetUnfolder]: 3/76 cut-off events. [2020-10-26 00:34:27,359 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-26 00:34:27,365 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. [2020-10-26 00:34:27,371 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-10-26 00:34:28,021 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-10-26 00:34:29,542 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-10-26 00:34:29,658 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-26 00:34:29,788 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-26 00:34:29,906 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-26 00:34:29,912 INFO L131 LiptonReduction]: Checked pairs total: 2778 [2020-10-26 00:34:29,912 INFO L133 LiptonReduction]: Total number of compositions: 68 [2020-10-26 00:34:29,919 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-10-26 00:34:29,950 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-10-26 00:34:29,953 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-10-26 00:34:29,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-26 00:34:29,961 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:34:29,962 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:34:29,963 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:34:29,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:34:29,970 INFO L82 PathProgramCache]: Analyzing trace with hash -345538935, now seen corresponding path program 1 times [2020-10-26 00:34:29,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:34:29,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771766826] [2020-10-26 00:34:29,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:34:30,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:34:30,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:34:30,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771766826] [2020-10-26 00:34:30,199 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:34:30,199 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-26 00:34:30,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702414633] [2020-10-26 00:34:30,205 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-26 00:34:30,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:34:30,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-26 00:34:30,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-26 00:34:30,230 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-10-26 00:34:30,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:34:30,270 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-10-26 00:34:30,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-26 00:34:30,272 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-10-26 00:34:30,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:34:30,291 INFO L225 Difference]: With dead ends: 362 [2020-10-26 00:34:30,291 INFO L226 Difference]: Without dead ends: 298 [2020-10-26 00:34:30,292 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-26 00:34:30,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-10-26 00:34:30,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-10-26 00:34:30,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-10-26 00:34:30,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-10-26 00:34:30,408 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-10-26 00:34:30,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:34:30,413 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-10-26 00:34:30,413 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-26 00:34:30,413 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-10-26 00:34:30,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-26 00:34:30,416 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:34:30,416 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:34:30,418 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 00:34:30,419 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:34:30,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:34:30,420 INFO L82 PathProgramCache]: Analyzing trace with hash -2121797576, now seen corresponding path program 1 times [2020-10-26 00:34:30,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:34:30,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146948220] [2020-10-26 00:34:30,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:34:30,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:34:30,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:34:30,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146948220] [2020-10-26 00:34:30,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:34:30,610 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-26 00:34:30,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972864564] [2020-10-26 00:34:30,612 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 00:34:30,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:34:30,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 00:34:30,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 00:34:30,613 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-10-26 00:34:30,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:34:30,651 INFO L93 Difference]: Finished difference Result 298 states and 816 transitions. [2020-10-26 00:34:30,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 00:34:30,652 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-26 00:34:30,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:34:30,655 INFO L225 Difference]: With dead ends: 298 [2020-10-26 00:34:30,655 INFO L226 Difference]: Without dead ends: 234 [2020-10-26 00:34:30,656 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 [2020-10-26 00:34:30,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-10-26 00:34:30,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2020-10-26 00:34:30,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-10-26 00:34:30,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 640 transitions. [2020-10-26 00:34:30,679 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 640 transitions. Word has length 9 [2020-10-26 00:34:30,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:34:30,679 INFO L481 AbstractCegarLoop]: Abstraction has 234 states and 640 transitions. [2020-10-26 00:34:30,680 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 00:34:30,680 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 640 transitions. [2020-10-26 00:34:30,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-26 00:34:30,682 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:34:30,682 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:34:30,682 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 00:34:30,683 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:34:30,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:34:30,684 INFO L82 PathProgramCache]: Analyzing trace with hash 1060758680, now seen corresponding path program 1 times [2020-10-26 00:34:30,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:34:30,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576320330] [2020-10-26 00:34:30,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:34:30,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:34:30,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:34:30,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576320330] [2020-10-26 00:34:30,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:34:30,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 00:34:30,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211137807] [2020-10-26 00:34:30,806 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 00:34:30,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:34:30,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 00:34:30,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 00:34:30,813 INFO L87 Difference]: Start difference. First operand 234 states and 640 transitions. Second operand 4 states. [2020-10-26 00:34:30,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:34:30,886 INFO L93 Difference]: Finished difference Result 346 states and 916 transitions. [2020-10-26 00:34:30,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 00:34:30,887 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-26 00:34:30,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:34:30,889 INFO L225 Difference]: With dead ends: 346 [2020-10-26 00:34:30,889 INFO L226 Difference]: Without dead ends: 164 [2020-10-26 00:34:30,889 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 [2020-10-26 00:34:30,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-10-26 00:34:30,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2020-10-26 00:34:30,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-26 00:34:30,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 432 transitions. [2020-10-26 00:34:30,917 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 432 transitions. Word has length 11 [2020-10-26 00:34:30,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:34:30,918 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 432 transitions. [2020-10-26 00:34:30,919 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 00:34:30,919 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 432 transitions. [2020-10-26 00:34:30,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-26 00:34:30,923 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:34:30,923 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:34:30,923 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 00:34:30,924 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:34:30,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:34:30,926 INFO L82 PathProgramCache]: Analyzing trace with hash -1476250237, now seen corresponding path program 1 times [2020-10-26 00:34:30,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:34:30,926 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795969999] [2020-10-26 00:34:30,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:34:30,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:34:31,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:34:31,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795969999] [2020-10-26 00:34:31,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:34:31,053 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 00:34:31,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851648422] [2020-10-26 00:34:31,054 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 00:34:31,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:34:31,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 00:34:31,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 00:34:31,055 INFO L87 Difference]: Start difference. First operand 164 states and 432 transitions. Second operand 4 states. [2020-10-26 00:34:31,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:34:31,120 INFO L93 Difference]: Finished difference Result 183 states and 435 transitions. [2020-10-26 00:34:31,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 00:34:31,121 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-26 00:34:31,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:34:31,123 INFO L225 Difference]: With dead ends: 183 [2020-10-26 00:34:31,123 INFO L226 Difference]: Without dead ends: 131 [2020-10-26 00:34:31,125 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 [2020-10-26 00:34:31,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-10-26 00:34:31,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2020-10-26 00:34:31,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-26 00:34:31,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 303 transitions. [2020-10-26 00:34:31,141 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 303 transitions. Word has length 12 [2020-10-26 00:34:31,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:34:31,142 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 303 transitions. [2020-10-26 00:34:31,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 00:34:31,142 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 303 transitions. [2020-10-26 00:34:31,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-26 00:34:31,145 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:34:31,145 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:34:31,147 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 00:34:31,147 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:34:31,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:34:31,148 INFO L82 PathProgramCache]: Analyzing trace with hash 1073724632, now seen corresponding path program 1 times [2020-10-26 00:34:31,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:34:31,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001083623] [2020-10-26 00:34:31,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:34:31,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:34:31,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:34:31,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001083623] [2020-10-26 00:34:31,264 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:34:31,264 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 00:34:31,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351786926] [2020-10-26 00:34:31,264 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 00:34:31,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:34:31,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 00:34:31,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 00:34:31,268 INFO L87 Difference]: Start difference. First operand 131 states and 303 transitions. Second operand 5 states. [2020-10-26 00:34:31,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:34:31,326 INFO L93 Difference]: Finished difference Result 118 states and 245 transitions. [2020-10-26 00:34:31,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 00:34:31,328 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-26 00:34:31,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:34:31,329 INFO L225 Difference]: With dead ends: 118 [2020-10-26 00:34:31,329 INFO L226 Difference]: Without dead ends: 87 [2020-10-26 00:34:31,330 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-26 00:34:31,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-26 00:34:31,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2020-10-26 00:34:31,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-26 00:34:31,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 172 transitions. [2020-10-26 00:34:31,334 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 172 transitions. Word has length 13 [2020-10-26 00:34:31,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:34:31,335 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 172 transitions. [2020-10-26 00:34:31,335 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 00:34:31,335 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 172 transitions. [2020-10-26 00:34:31,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-26 00:34:31,336 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:34:31,336 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:34:31,336 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 00:34:31,337 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:34:31,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:34:31,337 INFO L82 PathProgramCache]: Analyzing trace with hash 809328863, now seen corresponding path program 1 times [2020-10-26 00:34:31,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:34:31,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53189205] [2020-10-26 00:34:31,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:34:31,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:34:31,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:34:31,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53189205] [2020-10-26 00:34:31,396 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:34:31,396 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-26 00:34:31,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691491303] [2020-10-26 00:34:31,397 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 00:34:31,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:34:31,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 00:34:31,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-26 00:34:31,398 INFO L87 Difference]: Start difference. First operand 87 states and 172 transitions. Second operand 6 states. [2020-10-26 00:34:31,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:34:31,453 INFO L93 Difference]: Finished difference Result 76 states and 148 transitions. [2020-10-26 00:34:31,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 00:34:31,454 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-26 00:34:31,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:34:31,455 INFO L225 Difference]: With dead ends: 76 [2020-10-26 00:34:31,455 INFO L226 Difference]: Without dead ends: 67 [2020-10-26 00:34:31,456 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-26 00:34:31,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-26 00:34:31,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2020-10-26 00:34:31,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-26 00:34:31,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 132 transitions. [2020-10-26 00:34:31,459 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 132 transitions. Word has length 15 [2020-10-26 00:34:31,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:34:31,459 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 132 transitions. [2020-10-26 00:34:31,459 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 00:34:31,459 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 132 transitions. [2020-10-26 00:34:31,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-26 00:34:31,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:34:31,461 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:34:31,461 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 00:34:31,461 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:34:31,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:34:31,462 INFO L82 PathProgramCache]: Analyzing trace with hash -1097223765, now seen corresponding path program 1 times [2020-10-26 00:34:31,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:34:31,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546238377] [2020-10-26 00:34:31,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:34:31,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:34:31,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:34:31,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546238377] [2020-10-26 00:34:31,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:34:31,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 00:34:31,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39901791] [2020-10-26 00:34:31,532 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 00:34:31,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:34:31,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 00:34:31,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-26 00:34:31,534 INFO L87 Difference]: Start difference. First operand 67 states and 132 transitions. Second operand 5 states. [2020-10-26 00:34:31,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:34:31,573 INFO L93 Difference]: Finished difference Result 87 states and 167 transitions. [2020-10-26 00:34:31,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 00:34:31,574 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-26 00:34:31,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:34:31,575 INFO L225 Difference]: With dead ends: 87 [2020-10-26 00:34:31,575 INFO L226 Difference]: Without dead ends: 40 [2020-10-26 00:34:31,576 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-26 00:34:31,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-26 00:34:31,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-10-26 00:34:31,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-26 00:34:31,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 66 transitions. [2020-10-26 00:34:31,580 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 66 transitions. Word has length 18 [2020-10-26 00:34:31,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:34:31,580 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 66 transitions. [2020-10-26 00:34:31,580 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 00:34:31,580 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 66 transitions. [2020-10-26 00:34:31,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-26 00:34:31,581 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:34:31,581 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:34:31,581 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 00:34:31,581 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:34:31,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:34:31,582 INFO L82 PathProgramCache]: Analyzing trace with hash -1731427213, now seen corresponding path program 2 times [2020-10-26 00:34:31,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:34:31,585 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463238426] [2020-10-26 00:34:31,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:34:31,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:34:31,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:34:31,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463238426] [2020-10-26 00:34:31,703 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:34:31,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 00:34:31,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621959913] [2020-10-26 00:34:31,705 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 00:34:31,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:34:31,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 00:34:31,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-26 00:34:31,707 INFO L87 Difference]: Start difference. First operand 40 states and 66 transitions. Second operand 5 states. [2020-10-26 00:34:31,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:34:31,745 INFO L93 Difference]: Finished difference Result 39 states and 65 transitions. [2020-10-26 00:34:31,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 00:34:31,745 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-26 00:34:31,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:34:31,746 INFO L225 Difference]: With dead ends: 39 [2020-10-26 00:34:31,746 INFO L226 Difference]: Without dead ends: 0 [2020-10-26 00:34:31,749 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-26 00:34:31,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-26 00:34:31,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-26 00:34:31,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-26 00:34:31,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-26 00:34:31,749 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-10-26 00:34:31,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:34:31,750 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 00:34:31,750 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 00:34:31,750 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-26 00:34:31,750 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-26 00:34:31,750 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 00:34:31,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 12:34:31 BasicIcfg [2020-10-26 00:34:31,759 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-26 00:34:31,759 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-26 00:34:31,760 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-26 00:34:31,761 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-26 00:34:31,761 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 12:34:27" (3/4) ... [2020-10-26 00:34:31,765 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-26 00:34:31,774 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-10-26 00:34:31,774 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-10-26 00:34:31,774 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-10-26 00:34:31,784 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-10-26 00:34:31,785 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-26 00:34:31,785 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-26 00:34:31,785 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-26 00:34:31,853 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-26 00:34:31,856 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-26 00:34:31,858 INFO L168 Benchmark]: Toolchain (without parser) took 6185.83 ms. Allocated memory was 48.2 MB in the beginning and 104.9 MB in the end (delta: 56.6 MB). Free memory was 30.9 MB in the beginning and 67.8 MB in the end (delta: -36.9 MB). Peak memory consumption was 20.4 MB. Max. memory is 16.1 GB. [2020-10-26 00:34:31,861 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 37.7 MB. Free memory is still 20.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 00:34:31,861 INFO L168 Benchmark]: CACSL2BoogieTranslator took 709.89 ms. Allocated memory is still 48.2 MB. Free memory was 30.2 MB in the beginning and 21.8 MB in the end (delta: 8.4 MB). Peak memory consumption was 15.3 MB. Max. memory is 16.1 GB. [2020-10-26 00:34:31,862 INFO L168 Benchmark]: Boogie Procedure Inliner took 108.72 ms. Allocated memory is still 48.2 MB. Free memory was 21.8 MB in the beginning and 29.7 MB in the end (delta: -7.9 MB). Peak memory consumption was 2.8 MB. Max. memory is 16.1 GB. [2020-10-26 00:34:31,862 INFO L168 Benchmark]: Boogie Preprocessor took 35.13 ms. Allocated memory is still 48.2 MB. Free memory was 29.7 MB in the beginning and 28.2 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 00:34:31,863 INFO L168 Benchmark]: RCFGBuilder took 619.18 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 28.2 MB in the beginning and 27.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 16.1 GB. [2020-10-26 00:34:31,866 INFO L168 Benchmark]: TraceAbstraction took 4602.99 ms. Allocated memory was 58.7 MB in the beginning and 104.9 MB in the end (delta: 46.1 MB). Free memory was 26.5 MB in the beginning and 71.0 MB in the end (delta: -44.5 MB). Peak memory consumption was 1.6 MB. Max. memory is 16.1 GB. [2020-10-26 00:34:31,867 INFO L168 Benchmark]: Witness Printer took 97.31 ms. Allocated memory is still 104.9 MB. Free memory was 71.0 MB in the beginning and 67.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 00:34:31,871 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 37.7 MB. Free memory is still 20.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 709.89 ms. Allocated memory is still 48.2 MB. Free memory was 30.2 MB in the beginning and 21.8 MB in the end (delta: 8.4 MB). Peak memory consumption was 15.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 108.72 ms. Allocated memory is still 48.2 MB. Free memory was 21.8 MB in the beginning and 29.7 MB in the end (delta: -7.9 MB). Peak memory consumption was 2.8 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 35.13 ms. Allocated memory is still 48.2 MB. Free memory was 29.7 MB in the beginning and 28.2 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 619.18 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 28.2 MB in the beginning and 27.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4602.99 ms. Allocated memory was 58.7 MB in the beginning and 104.9 MB in the end (delta: 46.1 MB). Free memory was 26.5 MB in the beginning and 71.0 MB in the end (delta: -44.5 MB). Peak memory consumption was 1.6 MB. Max. memory is 16.1 GB. * Witness Printer took 97.31 ms. Allocated memory is still 104.9 MB. Free memory was 71.0 MB in the beginning and 67.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 999 VarBasedMoverChecksPositive, 33 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 27 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 82 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.6s, 86 PlacesBefore, 32 PlacesAfterwards, 79 TransitionsBefore, 23 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 2 ChoiceCompositions, 68 TotalNumberOfCompositions, 2778 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: 4.4s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.6s, HoareTripleCheckerStatistics: 178 SDtfs, 146 SDslu, 278 SDs, 0 SdLazy, 122 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 104 NumberOfCodeBlocks, 104 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 96 ConstructedInterpolants, 0 QuantifiedInterpolants, 3608 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...