./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-nondet/nondet-loop-bound-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_44482ba3-b33e-455a-8892-d2f53c6c23ba/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_44482ba3-b33e-455a-8892-d2f53c6c23ba/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_44482ba3-b33e-455a-8892-d2f53c6c23ba/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_44482ba3-b33e-455a-8892-d2f53c6c23ba/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-nondet/nondet-loop-bound-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_44482ba3-b33e-455a-8892-d2f53c6c23ba/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_44482ba3-b33e-455a-8892-d2f53c6c23ba/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 70388197a28bd3be848acf07d15b703eb0dba0f2 ................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_44482ba3-b33e-455a-8892-d2f53c6c23ba/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_44482ba3-b33e-455a-8892-d2f53c6c23ba/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_44482ba3-b33e-455a-8892-d2f53c6c23ba/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_44482ba3-b33e-455a-8892-d2f53c6c23ba/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-nondet/nondet-loop-bound-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_44482ba3-b33e-455a-8892-d2f53c6c23ba/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_44482ba3-b33e-455a-8892-d2f53c6c23ba/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 70388197a28bd3be848acf07d15b703eb0dba0f2 ..................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: IllegalStateException: Petrification does not provide enough thread instances for Thread0_thr2 --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-11-15 22:28:52,014 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 22:28:52,016 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 22:28:52,034 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 22:28:52,035 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 22:28:52,036 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 22:28:52,039 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 22:28:52,050 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 22:28:52,055 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 22:28:52,059 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 22:28:52,061 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 22:28:52,062 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 22:28:52,062 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 22:28:52,063 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 22:28:52,064 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 22:28:52,065 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 22:28:52,066 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 22:28:52,067 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 22:28:52,069 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 22:28:52,071 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 22:28:52,073 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 22:28:52,074 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 22:28:52,075 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 22:28:52,076 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 22:28:52,079 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 22:28:52,079 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 22:28:52,079 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 22:28:52,080 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 22:28:52,081 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 22:28:52,082 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 22:28:52,082 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 22:28:52,083 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 22:28:52,084 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 22:28:52,085 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 22:28:52,086 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 22:28:52,086 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 22:28:52,087 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 22:28:52,087 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 22:28:52,087 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 22:28:52,088 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 22:28:52,089 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 22:28:52,090 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_44482ba3-b33e-455a-8892-d2f53c6c23ba/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-15 22:28:52,121 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 22:28:52,121 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 22:28:52,122 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 22:28:52,123 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 22:28:52,123 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 22:28:52,123 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 22:28:52,123 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 22:28:52,124 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 22:28:52,124 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 22:28:52,124 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 22:28:52,124 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 22:28:52,125 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 22:28:52,125 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 22:28:52,125 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 22:28:52,125 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 22:28:52,126 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 22:28:52,126 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 22:28:52,126 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 22:28:52,127 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 22:28:52,127 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 22:28:52,127 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 22:28:52,127 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 22:28:52,128 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 22:28:52,128 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 22:28:52,128 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 22:28:52,128 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 22:28:52,129 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-15 22:28:52,129 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 22:28:52,129 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 -> /tmp/vcloud-vcloud-master/worker/run_dir_44482ba3-b33e-455a-8892-d2f53c6c23ba/bin/uautomizer 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(__VERIFIER_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 -> 70388197a28bd3be848acf07d15b703eb0dba0f2 [2019-11-15 22:28:52,172 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 22:28:52,184 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 22:28:52,188 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 22:28:52,190 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 22:28:52,190 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 22:28:52,191 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_44482ba3-b33e-455a-8892-d2f53c6c23ba/bin/uautomizer/../../sv-benchmarks/c/pthread-nondet/nondet-loop-bound-2.i [2019-11-15 22:28:52,251 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_44482ba3-b33e-455a-8892-d2f53c6c23ba/bin/uautomizer/data/a04c636d7/79d61510960c4e7db962bda2a32dd2a2/FLAG8700e31a6 [2019-11-15 22:28:52,756 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 22:28:52,757 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_44482ba3-b33e-455a-8892-d2f53c6c23ba/sv-benchmarks/c/pthread-nondet/nondet-loop-bound-2.i [2019-11-15 22:28:52,787 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_44482ba3-b33e-455a-8892-d2f53c6c23ba/bin/uautomizer/data/a04c636d7/79d61510960c4e7db962bda2a32dd2a2/FLAG8700e31a6 [2019-11-15 22:28:53,003 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_44482ba3-b33e-455a-8892-d2f53c6c23ba/bin/uautomizer/data/a04c636d7/79d61510960c4e7db962bda2a32dd2a2 [2019-11-15 22:28:53,006 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 22:28:53,008 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 22:28:53,012 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 22:28:53,012 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 22:28:53,017 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 22:28:53,018 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 10:28:53" (1/1) ... [2019-11-15 22:28:53,025 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ab4a1d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:28:53, skipping insertion in model container [2019-11-15 22:28:53,026 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 10:28:53" (1/1) ... [2019-11-15 22:28:53,035 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 22:28:53,091 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 22:28:53,556 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 22:28:53,569 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 22:28:53,646 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 22:28:53,720 INFO L192 MainTranslator]: Completed translation [2019-11-15 22:28:53,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:28:53 WrapperNode [2019-11-15 22:28:53,721 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 22:28:53,722 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 22:28:53,722 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 22:28:53,723 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 22:28:53,733 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:28:53" (1/1) ... [2019-11-15 22:28:53,750 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:28:53" (1/1) ... [2019-11-15 22:28:53,776 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 22:28:53,776 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 22:28:53,776 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 22:28:53,777 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 22:28:53,788 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:28:53" (1/1) ... [2019-11-15 22:28:53,789 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:28:53" (1/1) ... [2019-11-15 22:28:53,792 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:28:53" (1/1) ... [2019-11-15 22:28:53,793 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:28:53" (1/1) ... [2019-11-15 22:28:53,799 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:28:53" (1/1) ... [2019-11-15 22:28:53,803 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:28:53" (1/1) ... [2019-11-15 22:28:53,805 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:28:53" (1/1) ... [2019-11-15 22:28:53,808 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 22:28:53,809 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 22:28:53,809 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 22:28:53,810 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 22:28:53,811 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:28:53" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_44482ba3-b33e-455a-8892-d2f53c6c23ba/bin/uautomizer/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 [2019-11-15 22:28:53,891 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2019-11-15 22:28:53,892 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2019-11-15 22:28:53,892 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2019-11-15 22:28:53,893 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2019-11-15 22:28:53,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-15 22:28:53,894 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-15 22:28:53,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-15 22:28:53,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 22:28:53,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 22:28:53,899 WARN L202 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-11-15 22:28:54,333 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 22:28:54,334 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-15 22:28:54,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 10:28:54 BoogieIcfgContainer [2019-11-15 22:28:54,335 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 22:28:54,336 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 22:28:54,337 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 22:28:54,339 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 22:28:54,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 10:28:53" (1/3) ... [2019-11-15 22:28:54,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e381b53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 10:28:54, skipping insertion in model container [2019-11-15 22:28:54,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:28:53" (2/3) ... [2019-11-15 22:28:54,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e381b53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 10:28:54, skipping insertion in model container [2019-11-15 22:28:54,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 10:28:54" (3/3) ... [2019-11-15 22:28:54,343 INFO L109 eAbstractionObserver]: Analyzing ICFG nondet-loop-bound-2.i [2019-11-15 22:28:54,379 WARN L315 ript$VariableManager]: TermVariabe |Thread0_thr2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:28:54,379 WARN L315 ript$VariableManager]: TermVariabe |Thread0_thr2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:28:54,380 WARN L315 ript$VariableManager]: TermVariabe Thread0_thr2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:28:54,380 WARN L315 ript$VariableManager]: TermVariabe Thread0_thr2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:28:54,380 WARN L315 ript$VariableManager]: TermVariabe Thread0_thr2_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:28:54,380 WARN L315 ript$VariableManager]: TermVariabe Thread0_thr2_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:28:54,381 WARN L315 ript$VariableManager]: TermVariabe Thread0_thr2_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:28:54,381 WARN L315 ript$VariableManager]: TermVariabe |Thread1_thr1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:28:54,381 WARN L315 ript$VariableManager]: TermVariabe |Thread1_thr1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:28:54,382 WARN L315 ript$VariableManager]: TermVariabe Thread1_thr1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:28:54,382 WARN L315 ript$VariableManager]: TermVariabe Thread1_thr1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:28:54,382 WARN L315 ript$VariableManager]: TermVariabe |Thread1_thr1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:28:54,382 WARN L315 ript$VariableManager]: TermVariabe Thread1_thr1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:28:54,383 WARN L315 ript$VariableManager]: TermVariabe |Thread1_thr1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:28:54,383 WARN L315 ript$VariableManager]: TermVariabe Thread1_thr1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:28:54,383 WARN L315 ript$VariableManager]: TermVariabe Thread1_thr1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:28:54,383 WARN L315 ript$VariableManager]: TermVariabe Thread1_thr1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:28:54,403 WARN L141 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-15 22:28:54,403 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 22:28:54,411 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-11-15 22:28:54,424 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-11-15 22:28:54,445 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 22:28:54,445 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 22:28:54,446 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 22:28:54,446 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 22:28:54,446 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 22:28:54,446 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 22:28:54,446 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 22:28:54,446 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 22:28:54,457 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 50 places, 50 transitions [2019-11-15 22:28:54,487 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalStateException: Petrification does not provide enough thread instances for Thread0_thr2 at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.getInitialAbstraction(BasicCegarLoop.java:325) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:390) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:128) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-11-15 22:28:54,492 INFO L168 Benchmark]: Toolchain (without parser) took 1483.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -126.3 MB). Peak memory consumption was 11.6 MB. Max. memory is 11.5 GB. [2019-11-15 22:28:54,493 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 22:28:54,494 INFO L168 Benchmark]: CACSL2BoogieTranslator took 709.68 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -164.8 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. [2019-11-15 22:28:54,495 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.65 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-15 22:28:54,495 INFO L168 Benchmark]: Boogie Preprocessor took 32.67 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 22:28:54,496 INFO L168 Benchmark]: RCFGBuilder took 526.30 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2019-11-15 22:28:54,497 INFO L168 Benchmark]: TraceAbstraction took 152.85 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-15 22:28:54,502 INFO L335 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 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 709.68 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -164.8 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 53.65 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 32.67 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 526.30 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 152.85 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: IllegalStateException: Petrification does not provide enough thread instances for Thread0_thr2 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalStateException: Petrification does not provide enough thread instances for Thread0_thr2: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.getInitialAbstraction(BasicCegarLoop.java:325) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-cad4683 [2019-11-15 22:28:57,074 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 22:28:57,076 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 22:28:57,086 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 22:28:57,087 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 22:28:57,088 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 22:28:57,089 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 22:28:57,091 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 22:28:57,093 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 22:28:57,094 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 22:28:57,095 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 22:28:57,096 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 22:28:57,096 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 22:28:57,097 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 22:28:57,098 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 22:28:57,099 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 22:28:57,100 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 22:28:57,101 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 22:28:57,102 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 22:28:57,104 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 22:28:57,106 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 22:28:57,107 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 22:28:57,108 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 22:28:57,109 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 22:28:57,112 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 22:28:57,112 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 22:28:57,113 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 22:28:57,113 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 22:28:57,114 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 22:28:57,115 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 22:28:57,115 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 22:28:57,116 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 22:28:57,117 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 22:28:57,118 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 22:28:57,119 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 22:28:57,119 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 22:28:57,120 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 22:28:57,120 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 22:28:57,121 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 22:28:57,122 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 22:28:57,122 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 22:28:57,123 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_44482ba3-b33e-455a-8892-d2f53c6c23ba/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-15 22:28:57,138 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 22:28:57,138 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 22:28:57,140 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 22:28:57,140 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 22:28:57,140 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 22:28:57,141 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 22:28:57,141 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 22:28:57,141 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 22:28:57,141 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 22:28:57,142 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 22:28:57,142 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 22:28:57,142 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 22:28:57,142 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-15 22:28:57,143 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-15 22:28:57,143 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 22:28:57,143 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 22:28:57,143 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 22:28:57,144 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 22:28:57,144 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 22:28:57,144 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 22:28:57,145 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 22:28:57,145 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 22:28:57,145 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 22:28:57,145 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 22:28:57,146 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 22:28:57,146 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 22:28:57,146 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-15 22:28:57,146 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-15 22:28:57,147 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 22:28:57,147 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-15 22:28:57,147 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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 -> /tmp/vcloud-vcloud-master/worker/run_dir_44482ba3-b33e-455a-8892-d2f53c6c23ba/bin/uautomizer 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(__VERIFIER_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 -> 70388197a28bd3be848acf07d15b703eb0dba0f2 [2019-11-15 22:28:57,182 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 22:28:57,195 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 22:28:57,198 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 22:28:57,200 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 22:28:57,201 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 22:28:57,201 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_44482ba3-b33e-455a-8892-d2f53c6c23ba/bin/uautomizer/../../sv-benchmarks/c/pthread-nondet/nondet-loop-bound-2.i [2019-11-15 22:28:57,267 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_44482ba3-b33e-455a-8892-d2f53c6c23ba/bin/uautomizer/data/765a92a97/c7eaf178874d415f94258e6c5f46def4/FLAG75e2fcd68 [2019-11-15 22:28:57,770 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 22:28:57,771 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_44482ba3-b33e-455a-8892-d2f53c6c23ba/sv-benchmarks/c/pthread-nondet/nondet-loop-bound-2.i [2019-11-15 22:28:57,793 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_44482ba3-b33e-455a-8892-d2f53c6c23ba/bin/uautomizer/data/765a92a97/c7eaf178874d415f94258e6c5f46def4/FLAG75e2fcd68 [2019-11-15 22:28:58,150 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_44482ba3-b33e-455a-8892-d2f53c6c23ba/bin/uautomizer/data/765a92a97/c7eaf178874d415f94258e6c5f46def4 [2019-11-15 22:28:58,153 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 22:28:58,155 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 22:28:58,156 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 22:28:58,156 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 22:28:58,160 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 22:28:58,161 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 10:28:58" (1/1) ... [2019-11-15 22:28:58,164 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4905a49c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:28:58, skipping insertion in model container [2019-11-15 22:28:58,164 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 10:28:58" (1/1) ... [2019-11-15 22:28:58,172 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 22:28:58,224 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 22:28:58,681 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 22:28:58,696 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 22:28:58,758 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 22:28:58,842 INFO L192 MainTranslator]: Completed translation [2019-11-15 22:28:58,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:28:58 WrapperNode [2019-11-15 22:28:58,843 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 22:28:58,844 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 22:28:58,844 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 22:28:58,845 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 22:28:58,854 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:28:58" (1/1) ... [2019-11-15 22:28:58,880 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:28:58" (1/1) ... [2019-11-15 22:28:58,902 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 22:28:58,902 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 22:28:58,902 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 22:28:58,903 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 22:28:58,911 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:28:58" (1/1) ... [2019-11-15 22:28:58,912 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:28:58" (1/1) ... [2019-11-15 22:28:58,916 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:28:58" (1/1) ... [2019-11-15 22:28:58,916 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:28:58" (1/1) ... [2019-11-15 22:28:58,926 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:28:58" (1/1) ... [2019-11-15 22:28:58,930 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:28:58" (1/1) ... [2019-11-15 22:28:58,933 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:28:58" (1/1) ... [2019-11-15 22:28:58,938 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 22:28:58,938 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 22:28:58,938 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 22:28:58,938 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 22:28:58,939 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:28:58" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_44482ba3-b33e-455a-8892-d2f53c6c23ba/bin/uautomizer/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 [2019-11-15 22:28:59,014 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2019-11-15 22:28:59,014 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2019-11-15 22:28:59,014 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2019-11-15 22:28:59,015 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2019-11-15 22:28:59,015 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-15 22:28:59,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-15 22:28:59,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-15 22:28:59,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 22:28:59,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 22:28:59,017 WARN L202 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-11-15 22:28:59,350 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 22:28:59,350 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-15 22:28:59,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 10:28:59 BoogieIcfgContainer [2019-11-15 22:28:59,352 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 22:28:59,353 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 22:28:59,353 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 22:28:59,356 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 22:28:59,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 10:28:58" (1/3) ... [2019-11-15 22:28:59,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b65421b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 10:28:59, skipping insertion in model container [2019-11-15 22:28:59,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:28:58" (2/3) ... [2019-11-15 22:28:59,358 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b65421b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 10:28:59, skipping insertion in model container [2019-11-15 22:28:59,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 10:28:59" (3/3) ... [2019-11-15 22:28:59,360 INFO L109 eAbstractionObserver]: Analyzing ICFG nondet-loop-bound-2.i [2019-11-15 22:28:59,396 WARN L315 ript$VariableManager]: TermVariabe |Thread0_thr2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:28:59,397 WARN L315 ript$VariableManager]: TermVariabe |Thread0_thr2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:28:59,397 WARN L315 ript$VariableManager]: TermVariabe Thread0_thr2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:28:59,397 WARN L315 ript$VariableManager]: TermVariabe Thread0_thr2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:28:59,398 WARN L315 ript$VariableManager]: TermVariabe Thread0_thr2_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:28:59,398 WARN L315 ript$VariableManager]: TermVariabe Thread0_thr2_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:28:59,398 WARN L315 ript$VariableManager]: TermVariabe Thread0_thr2_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:28:59,399 WARN L315 ript$VariableManager]: TermVariabe |Thread1_thr1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:28:59,399 WARN L315 ript$VariableManager]: TermVariabe |Thread1_thr1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:28:59,399 WARN L315 ript$VariableManager]: TermVariabe Thread1_thr1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:28:59,400 WARN L315 ript$VariableManager]: TermVariabe Thread1_thr1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:28:59,400 WARN L315 ript$VariableManager]: TermVariabe |Thread1_thr1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:28:59,401 WARN L315 ript$VariableManager]: TermVariabe Thread1_thr1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:28:59,401 WARN L315 ript$VariableManager]: TermVariabe |Thread1_thr1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:28:59,401 WARN L315 ript$VariableManager]: TermVariabe Thread1_thr1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:28:59,401 WARN L315 ript$VariableManager]: TermVariabe Thread1_thr1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:28:59,402 WARN L315 ript$VariableManager]: TermVariabe Thread1_thr1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:28:59,413 WARN L141 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-15 22:28:59,414 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 22:28:59,425 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-11-15 22:28:59,438 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-11-15 22:28:59,460 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 22:28:59,460 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 22:28:59,461 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 22:28:59,461 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 22:28:59,461 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 22:28:59,461 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 22:28:59,461 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 22:28:59,461 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 22:28:59,473 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 50 places, 50 transitions [2019-11-15 22:28:59,511 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalStateException: Petrification does not provide enough thread instances for Thread0_thr2 at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.getInitialAbstraction(BasicCegarLoop.java:325) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:390) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:128) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-11-15 22:28:59,516 INFO L168 Benchmark]: Toolchain (without parser) took 1360.38 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 164.6 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -154.0 MB). Peak memory consumption was 10.6 MB. Max. memory is 11.5 GB. [2019-11-15 22:28:59,517 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 1.0 GB. Free memory is still 972.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 22:28:59,518 INFO L168 Benchmark]: CACSL2BoogieTranslator took 687.51 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 164.6 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -184.5 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. [2019-11-15 22:28:59,518 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.77 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 22:28:59,519 INFO L168 Benchmark]: Boogie Preprocessor took 35.55 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 22:28:59,520 INFO L168 Benchmark]: RCFGBuilder took 413.76 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 23.9 MB). Peak memory consumption was 23.9 MB. Max. memory is 11.5 GB. [2019-11-15 22:28:59,520 INFO L168 Benchmark]: TraceAbstraction took 160.91 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-11-15 22:28:59,524 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 1.0 GB. Free memory is still 972.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 687.51 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 164.6 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -184.5 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 57.77 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 35.55 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 413.76 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 23.9 MB). Peak memory consumption was 23.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 160.91 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: IllegalStateException: Petrification does not provide enough thread instances for Thread0_thr2 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalStateException: Petrification does not provide enough thread instances for Thread0_thr2: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.getInitialAbstraction(BasicCegarLoop.java:325) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...