./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe037_pso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 69874e26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_03422921-945e-468a-a2ee-026a84f6720a/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_03422921-945e-468a-a2ee-026a84f6720a/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_03422921-945e-468a-a2ee-026a84f6720a/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_03422921-945e-468a-a2ee-026a84f6720a/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe037_pso.oepc.i -s /tmp/vcloud-vcloud-master/worker/run_dir_03422921-945e-468a-a2ee-026a84f6720a/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_03422921-945e-468a-a2ee-026a84f6720a/bin/uautomizer --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 3fa1ffa37f011d693047d2e96778a69bf7fbb304 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-69874e2 [2020-12-01 15:22:10,703 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 15:22:10,706 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 15:22:10,780 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 15:22:10,790 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 15:22:10,792 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 15:22:10,794 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 15:22:10,796 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 15:22:10,799 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 15:22:10,805 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 15:22:10,806 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 15:22:10,808 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 15:22:10,809 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 15:22:10,810 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 15:22:10,812 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 15:22:10,813 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 15:22:10,814 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 15:22:10,815 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 15:22:10,818 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 15:22:10,820 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 15:22:10,822 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 15:22:10,824 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 15:22:10,825 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 15:22:10,827 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 15:22:10,830 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 15:22:10,831 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 15:22:10,831 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 15:22:10,832 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 15:22:10,833 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 15:22:10,834 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 15:22:10,835 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 15:22:10,836 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 15:22:10,837 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 15:22:10,838 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 15:22:10,839 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 15:22:10,840 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 15:22:10,841 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 15:22:10,841 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 15:22:10,841 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 15:22:10,842 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 15:22:10,843 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 15:22:10,845 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_03422921-945e-468a-a2ee-026a84f6720a/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-01 15:22:10,869 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 15:22:10,870 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 15:22:10,871 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 15:22:10,871 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 15:22:10,872 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 15:22:10,872 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 15:22:10,872 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 15:22:10,873 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 15:22:10,873 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 15:22:10,873 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 15:22:10,874 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 15:22:10,874 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 15:22:10,874 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 15:22:10,874 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 15:22:10,875 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 15:22:10,875 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 15:22:10,875 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 15:22:10,876 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 15:22:10,876 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 15:22:10,876 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 15:22:10,877 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 15:22:10,877 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 15:22:10,877 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 15:22:10,877 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 15:22:10,878 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 15:22:10,878 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-01 15:22:10,878 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 15:22:10,879 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 15:22:10,879 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 15:22:10,879 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:/tmp/vcloud-vcloud-master/worker/run_dir_03422921-945e-468a-a2ee-026a84f6720a/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_03422921-945e-468a-a2ee-026a84f6720a/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3fa1ffa37f011d693047d2e96778a69bf7fbb304 [2020-12-01 15:22:11,212 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 15:22:11,253 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 15:22:11,256 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 15:22:11,259 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 15:22:11,265 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 15:22:11,267 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_03422921-945e-468a-a2ee-026a84f6720a/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/safe037_pso.oepc.i [2020-12-01 15:22:11,335 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_03422921-945e-468a-a2ee-026a84f6720a/bin/uautomizer/data/317e7a17c/4ce4cab353cf4fac8106f4d47ae4806b/FLAG0ca88e534 [2020-12-01 15:22:11,988 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 15:22:11,989 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_03422921-945e-468a-a2ee-026a84f6720a/sv-benchmarks/c/pthread-wmm/safe037_pso.oepc.i [2020-12-01 15:22:12,007 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_03422921-945e-468a-a2ee-026a84f6720a/bin/uautomizer/data/317e7a17c/4ce4cab353cf4fac8106f4d47ae4806b/FLAG0ca88e534 [2020-12-01 15:22:12,221 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_03422921-945e-468a-a2ee-026a84f6720a/bin/uautomizer/data/317e7a17c/4ce4cab353cf4fac8106f4d47ae4806b [2020-12-01 15:22:12,223 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 15:22:12,227 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 15:22:12,231 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 15:22:12,231 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 15:22:12,235 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 15:22:12,237 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:22:12" (1/1) ... [2020-12-01 15:22:12,239 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@603972cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:22:12, skipping insertion in model container [2020-12-01 15:22:12,239 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:22:12" (1/1) ... [2020-12-01 15:22:12,247 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 15:22:12,322 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 15:22:12,675 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:22:12,684 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 15:22:12,726 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:22:12,805 INFO L208 MainTranslator]: Completed translation [2020-12-01 15:22:12,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:22:12 WrapperNode [2020-12-01 15:22:12,805 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 15:22:12,806 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 15:22:12,807 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 15:22:12,807 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 15:22:12,815 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:22:12" (1/1) ... [2020-12-01 15:22:12,830 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:22:12" (1/1) ... [2020-12-01 15:22:12,850 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 15:22:12,851 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 15:22:12,851 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 15:22:12,851 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 15:22:12,858 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:22:12" (1/1) ... [2020-12-01 15:22:12,859 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:22:12" (1/1) ... [2020-12-01 15:22:12,862 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:22:12" (1/1) ... [2020-12-01 15:22:12,862 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:22:12" (1/1) ... [2020-12-01 15:22:12,868 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:22:12" (1/1) ... [2020-12-01 15:22:12,870 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:22:12" (1/1) ... [2020-12-01 15:22:12,872 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:22:12" (1/1) ... [2020-12-01 15:22:12,875 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 15:22:12,876 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 15:22:12,876 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 15:22:12,876 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 15:22:12,887 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:22:12" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_03422921-945e-468a-a2ee-026a84f6720a/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 [2020-12-01 15:22:12,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-01 15:22:12,938 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-01 15:22:12,938 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 15:22:12,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-01 15:22:12,938 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-01 15:22:12,938 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-01 15:22:12,939 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-01 15:22:12,939 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-01 15:22:12,939 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-01 15:22:12,939 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-01 15:22:12,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 15:22:12,939 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-01 15:22:12,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 15:22:12,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 15:22:12,941 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-01 15:22:13,309 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 15:22:13,309 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-12-01 15:22:13,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:22:13 BoogieIcfgContainer [2020-12-01 15:22:13,311 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 15:22:13,313 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 15:22:13,313 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 15:22:13,319 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 15:22:13,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 03:22:12" (1/3) ... [2020-12-01 15:22:13,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@152c4931 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:22:13, skipping insertion in model container [2020-12-01 15:22:13,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:22:12" (2/3) ... [2020-12-01 15:22:13,323 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@152c4931 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:22:13, skipping insertion in model container [2020-12-01 15:22:13,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:22:13" (3/3) ... [2020-12-01 15:22:13,324 INFO L111 eAbstractionObserver]: Analyzing ICFG safe037_pso.oepc.i [2020-12-01 15:22:13,342 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-01 15:22:13,342 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 15:22:13,345 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-01 15:22:13,346 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-01 15:22:13,390 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:22:13,390 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:22:13,390 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:22:13,391 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:22:13,391 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:22:13,391 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:22:13,391 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:22:13,391 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:22:13,392 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:22:13,392 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:22:13,392 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:22:13,393 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:22:13,393 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:22:13,394 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:22:13,394 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:22:13,394 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:22:13,394 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:22:13,394 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:22:13,395 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:22:13,395 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:22:13,396 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:22:13,396 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:22:13,397 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:22:13,398 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:22:13,400 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:22:13,400 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:22:13,401 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:22:13,402 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:22:13,403 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:22:13,403 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:22:13,403 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:22:13,403 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:22:13,409 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:22:13,410 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:22:13,410 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:22:13,411 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:22:13,415 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:22:13,415 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:22:13,416 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:22:13,416 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:22:13,422 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:22:13,422 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:22:13,423 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:22:13,423 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:22:13,425 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:22:13,427 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:22:13,427 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:22:13,427 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:22:13,434 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-01 15:22:13,445 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-01 15:22:13,477 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 15:22:13,477 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 15:22:13,477 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 15:22:13,478 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 15:22:13,478 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 15:22:13,478 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 15:22:13,478 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 15:22:13,478 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 15:22:13,501 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-01 15:22:13,503 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 87 places, 80 transitions, 175 flow [2020-12-01 15:22:13,507 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 87 places, 80 transitions, 175 flow [2020-12-01 15:22:13,508 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 87 places, 80 transitions, 175 flow [2020-12-01 15:22:13,584 INFO L129 PetriNetUnfolder]: 3/77 cut-off events. [2020-12-01 15:22:13,584 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-01 15:22:13,589 INFO L84 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 77 events. 3/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 61 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-12-01 15:22:13,594 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-12-01 15:22:17,023 WARN L197 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-12-01 15:22:17,301 WARN L197 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-12-01 15:22:17,716 INFO L131 LiptonReduction]: Checked pairs total: 2901 [2020-12-01 15:22:17,717 INFO L133 LiptonReduction]: Total number of compositions: 75 [2020-12-01 15:22:17,724 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-12-01 15:22:17,748 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-12-01 15:22:17,750 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-12-01 15:22:17,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-01 15:22:17,756 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:22:17,757 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:22:17,757 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:22:17,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:22:17,762 INFO L82 PathProgramCache]: Analyzing trace with hash -1054042143, now seen corresponding path program 1 times [2020-12-01 15:22:17,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:22:17,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266795144] [2020-12-01 15:22:17,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:22:17,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:22:17,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:22:17,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266795144] [2020-12-01 15:22:17,988 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:22:17,989 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-01 15:22:17,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324558065] [2020-12-01 15:22:17,994 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:22:17,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:22:18,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:22:18,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:22:18,013 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 4 states. [2020-12-01 15:22:18,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:22:18,104 INFO L93 Difference]: Finished difference Result 281 states and 711 transitions. [2020-12-01 15:22:18,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 15:22:18,106 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-12-01 15:22:18,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:22:18,118 INFO L225 Difference]: With dead ends: 281 [2020-12-01 15:22:18,119 INFO L226 Difference]: Without dead ends: 180 [2020-12-01 15:22:18,120 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 [2020-12-01 15:22:18,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-12-01 15:22:18,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2020-12-01 15:22:18,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-12-01 15:22:18,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 440 transitions. [2020-12-01 15:22:18,193 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 440 transitions. Word has length 8 [2020-12-01 15:22:18,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:22:18,193 INFO L481 AbstractCegarLoop]: Abstraction has 180 states and 440 transitions. [2020-12-01 15:22:18,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:22:18,194 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 440 transitions. [2020-12-01 15:22:18,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-01 15:22:18,195 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:22:18,196 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:22:18,196 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-01 15:22:18,196 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:22:18,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:22:18,197 INFO L82 PathProgramCache]: Analyzing trace with hash 1550829140, now seen corresponding path program 1 times [2020-12-01 15:22:18,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:22:18,198 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836226920] [2020-12-01 15:22:18,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:22:18,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:22:18,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:22:18,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836226920] [2020-12-01 15:22:18,309 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:22:18,309 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 15:22:18,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344050561] [2020-12-01 15:22:18,310 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-01 15:22:18,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:22:18,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-01 15:22:18,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:22:18,313 INFO L87 Difference]: Start difference. First operand 180 states and 440 transitions. Second operand 5 states. [2020-12-01 15:22:18,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:22:18,368 INFO L93 Difference]: Finished difference Result 163 states and 368 transitions. [2020-12-01 15:22:18,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 15:22:18,368 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-01 15:22:18,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:22:18,373 INFO L225 Difference]: With dead ends: 163 [2020-12-01 15:22:18,373 INFO L226 Difference]: Without dead ends: 126 [2020-12-01 15:22:18,374 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-01 15:22:18,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-12-01 15:22:18,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2020-12-01 15:22:18,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-12-01 15:22:18,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 278 transitions. [2020-12-01 15:22:18,394 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 278 transitions. Word has length 11 [2020-12-01 15:22:18,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:22:18,395 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 278 transitions. [2020-12-01 15:22:18,395 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-01 15:22:18,395 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 278 transitions. [2020-12-01 15:22:18,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-01 15:22:18,400 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:22:18,400 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:22:18,401 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-01 15:22:18,401 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:22:18,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:22:18,411 INFO L82 PathProgramCache]: Analyzing trace with hash -1926964344, now seen corresponding path program 1 times [2020-12-01 15:22:18,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:22:18,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918002404] [2020-12-01 15:22:18,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:22:18,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:22:18,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:22:18,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918002404] [2020-12-01 15:22:18,536 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:22:18,537 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 15:22:18,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128630356] [2020-12-01 15:22:18,538 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-01 15:22:18,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:22:18,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-01 15:22:18,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-01 15:22:18,541 INFO L87 Difference]: Start difference. First operand 126 states and 278 transitions. Second operand 6 states. [2020-12-01 15:22:18,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:22:18,606 INFO L93 Difference]: Finished difference Result 118 states and 260 transitions. [2020-12-01 15:22:18,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-01 15:22:18,607 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-12-01 15:22:18,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:22:18,609 INFO L225 Difference]: With dead ends: 118 [2020-12-01 15:22:18,609 INFO L226 Difference]: Without dead ends: 108 [2020-12-01 15:22:18,609 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-12-01 15:22:18,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-12-01 15:22:18,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2020-12-01 15:22:18,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-12-01 15:22:18,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 242 transitions. [2020-12-01 15:22:18,624 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 242 transitions. Word has length 14 [2020-12-01 15:22:18,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:22:18,624 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 242 transitions. [2020-12-01 15:22:18,625 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-01 15:22:18,625 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 242 transitions. [2020-12-01 15:22:18,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-01 15:22:18,626 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:22:18,626 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:22:18,626 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-01 15:22:18,627 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:22:18,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:22:18,627 INFO L82 PathProgramCache]: Analyzing trace with hash 337836795, now seen corresponding path program 1 times [2020-12-01 15:22:18,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:22:18,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626788964] [2020-12-01 15:22:18,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:22:18,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:22:18,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:22:18,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626788964] [2020-12-01 15:22:18,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:22:18,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 15:22:18,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968073223] [2020-12-01 15:22:18,728 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:22:18,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:22:18,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:22:18,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:22:18,729 INFO L87 Difference]: Start difference. First operand 108 states and 242 transitions. Second operand 4 states. [2020-12-01 15:22:18,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:22:18,742 INFO L93 Difference]: Finished difference Result 133 states and 289 transitions. [2020-12-01 15:22:18,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 15:22:18,742 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-12-01 15:22:18,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:22:18,743 INFO L225 Difference]: With dead ends: 133 [2020-12-01 15:22:18,743 INFO L226 Difference]: Without dead ends: 54 [2020-12-01 15:22:18,744 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 [2020-12-01 15:22:18,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-12-01 15:22:18,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-12-01 15:22:18,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-12-01 15:22:18,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 98 transitions. [2020-12-01 15:22:18,747 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 98 transitions. Word has length 17 [2020-12-01 15:22:18,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:22:18,747 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 98 transitions. [2020-12-01 15:22:18,748 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:22:18,748 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 98 transitions. [2020-12-01 15:22:18,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-01 15:22:18,749 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:22:18,749 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:22:18,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-01 15:22:18,749 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:22:18,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:22:18,750 INFO L82 PathProgramCache]: Analyzing trace with hash 64468355, now seen corresponding path program 2 times [2020-12-01 15:22:18,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:22:18,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050211353] [2020-12-01 15:22:18,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:22:18,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:22:18,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:22:18,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050211353] [2020-12-01 15:22:18,801 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:22:18,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 15:22:18,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702412202] [2020-12-01 15:22:18,801 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:22:18,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:22:18,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:22:18,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:22:18,803 INFO L87 Difference]: Start difference. First operand 54 states and 98 transitions. Second operand 4 states. [2020-12-01 15:22:18,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:22:18,821 INFO L93 Difference]: Finished difference Result 67 states and 119 transitions. [2020-12-01 15:22:18,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 15:22:18,822 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-12-01 15:22:18,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:22:18,822 INFO L225 Difference]: With dead ends: 67 [2020-12-01 15:22:18,823 INFO L226 Difference]: Without dead ends: 30 [2020-12-01 15:22:18,823 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 [2020-12-01 15:22:18,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-12-01 15:22:18,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-12-01 15:22:18,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-12-01 15:22:18,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 44 transitions. [2020-12-01 15:22:18,825 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 44 transitions. Word has length 17 [2020-12-01 15:22:18,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:22:18,825 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 44 transitions. [2020-12-01 15:22:18,825 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:22:18,826 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 44 transitions. [2020-12-01 15:22:18,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-01 15:22:18,826 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:22:18,826 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:22:18,826 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-01 15:22:18,827 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:22:18,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:22:18,827 INFO L82 PathProgramCache]: Analyzing trace with hash -339277395, now seen corresponding path program 3 times [2020-12-01 15:22:18,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:22:18,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029197955] [2020-12-01 15:22:18,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:22:18,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:22:18,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:22:18,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029197955] [2020-12-01 15:22:18,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:22:18,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 15:22:18,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307428937] [2020-12-01 15:22:18,889 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:22:18,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:22:18,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:22:18,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:22:18,890 INFO L87 Difference]: Start difference. First operand 30 states and 44 transitions. Second operand 4 states. [2020-12-01 15:22:18,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:22:18,902 INFO L93 Difference]: Finished difference Result 29 states and 43 transitions. [2020-12-01 15:22:18,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 15:22:18,903 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-12-01 15:22:18,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:22:18,903 INFO L225 Difference]: With dead ends: 29 [2020-12-01 15:22:18,903 INFO L226 Difference]: Without dead ends: 0 [2020-12-01 15:22:18,903 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 [2020-12-01 15:22:18,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-01 15:22:18,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-01 15:22:18,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-01 15:22:18,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-01 15:22:18,904 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-12-01 15:22:18,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:22:18,904 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-01 15:22:18,905 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:22:18,905 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-01 15:22:18,905 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-01 15:22:18,905 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-01 15:22:18,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 03:22:18 BasicIcfg [2020-12-01 15:22:18,908 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 15:22:18,908 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 15:22:18,908 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 15:22:18,909 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 15:22:18,909 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:22:13" (3/4) ... [2020-12-01 15:22:18,912 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-01 15:22:18,919 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-01 15:22:18,919 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-01 15:22:18,919 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-01 15:22:18,925 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-12-01 15:22:18,926 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-01 15:22:18,926 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-01 15:22:18,926 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-01 15:22:18,988 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_03422921-945e-468a-a2ee-026a84f6720a/bin/uautomizer/witness.graphml [2020-12-01 15:22:18,988 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 15:22:18,989 INFO L168 Benchmark]: Toolchain (without parser) took 6761.94 ms. Allocated memory was 102.8 MB in the beginning and 186.6 MB in the end (delta: 83.9 MB). Free memory was 80.1 MB in the beginning and 95.0 MB in the end (delta: -14.9 MB). Peak memory consumption was 68.6 MB. Max. memory is 16.1 GB. [2020-12-01 15:22:18,992 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 81.8 MB. Free memory was 46.1 MB in the beginning and 46.1 MB in the end (delta: 65.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:22:18,992 INFO L168 Benchmark]: CACSL2BoogieTranslator took 575.19 ms. Allocated memory is still 102.8 MB. Free memory was 79.8 MB in the beginning and 58.7 MB in the end (delta: 21.1 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-12-01 15:22:18,993 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.50 ms. Allocated memory is still 102.8 MB. Free memory was 58.7 MB in the beginning and 56.5 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:22:18,993 INFO L168 Benchmark]: Boogie Preprocessor took 24.66 ms. Allocated memory is still 102.8 MB. Free memory was 56.5 MB in the beginning and 55.3 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:22:18,993 INFO L168 Benchmark]: RCFGBuilder took 435.37 ms. Allocated memory is still 102.8 MB. Free memory was 55.3 MB in the beginning and 67.2 MB in the end (delta: -11.9 MB). Peak memory consumption was 14.2 MB. Max. memory is 16.1 GB. [2020-12-01 15:22:18,994 INFO L168 Benchmark]: TraceAbstraction took 5595.20 ms. Allocated memory was 102.8 MB in the beginning and 186.6 MB in the end (delta: 83.9 MB). Free memory was 66.7 MB in the beginning and 98.1 MB in the end (delta: -31.4 MB). Peak memory consumption was 51.9 MB. Max. memory is 16.1 GB. [2020-12-01 15:22:18,994 INFO L168 Benchmark]: Witness Printer took 79.86 ms. Allocated memory is still 186.6 MB. Free memory was 97.1 MB in the beginning and 95.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:22:18,997 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 81.8 MB. Free memory was 46.1 MB in the beginning and 46.1 MB in the end (delta: 65.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 575.19 ms. Allocated memory is still 102.8 MB. Free memory was 79.8 MB in the beginning and 58.7 MB in the end (delta: 21.1 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.50 ms. Allocated memory is still 102.8 MB. Free memory was 58.7 MB in the beginning and 56.5 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.66 ms. Allocated memory is still 102.8 MB. Free memory was 56.5 MB in the beginning and 55.3 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 435.37 ms. Allocated memory is still 102.8 MB. Free memory was 55.3 MB in the beginning and 67.2 MB in the end (delta: -11.9 MB). Peak memory consumption was 14.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5595.20 ms. Allocated memory was 102.8 MB in the beginning and 186.6 MB in the end (delta: 83.9 MB). Free memory was 66.7 MB in the beginning and 98.1 MB in the end (delta: -31.4 MB). Peak memory consumption was 51.9 MB. Max. memory is 16.1 GB. * Witness Printer took 79.86 ms. Allocated memory is still 186.6 MB. Free memory was 97.1 MB in the beginning and 95.0 MB in the end (delta: 2.1 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 950 VarBasedMoverChecksPositive, 36 VarBasedMoverChecksNegative, 2 SemBasedMoverChecksPositive, 34 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 71 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.2s, 87 PlacesBefore, 31 PlacesAfterwards, 80 TransitionsBefore, 21 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 19 TrivialSequentialCompositions, 44 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 3 ChoiceCompositions, 75 TotalNumberOfCompositions, 2901 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, 78 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.4s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.2s, HoareTripleCheckerStatistics: 115 SDtfs, 168 SDslu, 151 SDs, 0 SdLazy, 57 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 84 NumberOfCodeBlocks, 84 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 78 ConstructedInterpolants, 0 QuantifiedInterpolants, 2874 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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...