./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe023_tso.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_7eef70d3-3a9a-4c27-a105-701400ff43d4/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_7eef70d3-3a9a-4c27-a105-701400ff43d4/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_7eef70d3-3a9a-4c27-a105-701400ff43d4/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_7eef70d3-3a9a-4c27-a105-701400ff43d4/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe023_tso.oepc.i -s /tmp/vcloud-vcloud-master/worker/run_dir_7eef70d3-3a9a-4c27-a105-701400ff43d4/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_7eef70d3-3a9a-4c27-a105-701400ff43d4/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 89d18357e5beee986360f57fba4e9590d5a4033b ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 15:54:14,690 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 15:54:14,693 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 15:54:14,747 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 15:54:14,748 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 15:54:14,753 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 15:54:14,756 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 15:54:14,760 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 15:54:14,763 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 15:54:14,771 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 15:54:14,773 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 15:54:14,776 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 15:54:14,776 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 15:54:14,780 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 15:54:14,782 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 15:54:14,785 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 15:54:14,786 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 15:54:14,791 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 15:54:14,795 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 15:54:14,803 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 15:54:14,805 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 15:54:14,806 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 15:54:14,809 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 15:54:14,810 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 15:54:14,819 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 15:54:14,819 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 15:54:14,820 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 15:54:14,822 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 15:54:14,823 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 15:54:14,824 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 15:54:14,825 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 15:54:14,826 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 15:54:14,828 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 15:54:14,830 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 15:54:14,831 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 15:54:14,831 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 15:54:14,832 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 15:54:14,832 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 15:54:14,833 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 15:54:14,834 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 15:54:14,835 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 15:54:14,838 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_7eef70d3-3a9a-4c27-a105-701400ff43d4/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-01 15:54:14,878 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 15:54:14,878 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 15:54:14,881 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 15:54:14,881 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 15:54:14,881 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 15:54:14,881 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 15:54:14,882 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 15:54:14,882 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 15:54:14,882 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 15:54:14,882 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 15:54:14,884 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 15:54:14,884 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 15:54:14,884 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 15:54:14,885 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 15:54:14,885 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 15:54:14,885 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 15:54:14,885 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 15:54:14,886 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 15:54:14,886 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 15:54:14,886 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 15:54:14,886 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 15:54:14,887 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 15:54:14,887 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 15:54:14,887 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 15:54:14,887 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 15:54:14,888 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-01 15:54:14,888 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 15:54:14,888 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 15:54:14,888 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 15:54:14,889 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_7eef70d3-3a9a-4c27-a105-701400ff43d4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_7eef70d3-3a9a-4c27-a105-701400ff43d4/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 89d18357e5beee986360f57fba4e9590d5a4033b [2020-12-01 15:54:15,229 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 15:54:15,272 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 15:54:15,274 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 15:54:15,275 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 15:54:15,276 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 15:54:15,277 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_7eef70d3-3a9a-4c27-a105-701400ff43d4/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/safe023_tso.oepc.i [2020-12-01 15:54:15,361 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7eef70d3-3a9a-4c27-a105-701400ff43d4/bin/uautomizer/data/65555ae94/bca98e2f4cae44a6a77e5bc2f4f95d21/FLAG6bc6a2284 [2020-12-01 15:54:15,888 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 15:54:15,889 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_7eef70d3-3a9a-4c27-a105-701400ff43d4/sv-benchmarks/c/pthread-wmm/safe023_tso.oepc.i [2020-12-01 15:54:15,909 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7eef70d3-3a9a-4c27-a105-701400ff43d4/bin/uautomizer/data/65555ae94/bca98e2f4cae44a6a77e5bc2f4f95d21/FLAG6bc6a2284 [2020-12-01 15:54:16,177 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_7eef70d3-3a9a-4c27-a105-701400ff43d4/bin/uautomizer/data/65555ae94/bca98e2f4cae44a6a77e5bc2f4f95d21 [2020-12-01 15:54:16,179 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 15:54:16,180 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 15:54:16,190 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 15:54:16,190 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 15:54:16,193 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 15:54:16,195 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:54:16" (1/1) ... [2020-12-01 15:54:16,197 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c3c4796 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:54:16, skipping insertion in model container [2020-12-01 15:54:16,197 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:54:16" (1/1) ... [2020-12-01 15:54:16,204 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 15:54:16,274 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 15:54:16,763 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:54:16,772 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 15:54:16,817 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:54:16,923 INFO L208 MainTranslator]: Completed translation [2020-12-01 15:54:16,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:54:16 WrapperNode [2020-12-01 15:54:16,926 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 15:54:16,927 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 15:54:16,927 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 15:54:16,927 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 15:54:16,936 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:54:16" (1/1) ... [2020-12-01 15:54:16,992 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:54:16" (1/1) ... [2020-12-01 15:54:17,028 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 15:54:17,030 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 15:54:17,031 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 15:54:17,031 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 15:54:17,040 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:54:16" (1/1) ... [2020-12-01 15:54:17,041 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:54:16" (1/1) ... [2020-12-01 15:54:17,054 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:54:16" (1/1) ... [2020-12-01 15:54:17,056 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:54:16" (1/1) ... [2020-12-01 15:54:17,067 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:54:16" (1/1) ... [2020-12-01 15:54:17,076 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:54:16" (1/1) ... [2020-12-01 15:54:17,078 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:54:16" (1/1) ... [2020-12-01 15:54:17,086 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 15:54:17,087 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 15:54:17,095 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 15:54:17,096 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 15:54:17,097 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:54:16" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7eef70d3-3a9a-4c27-a105-701400ff43d4/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 15:54:17,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-01 15:54:17,189 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-01 15:54:17,189 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 15:54:17,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-01 15:54:17,191 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-01 15:54:17,191 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-01 15:54:17,192 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-01 15:54:17,192 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-01 15:54:17,192 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-01 15:54:17,193 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-01 15:54:17,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 15:54:17,194 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-01 15:54:17,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 15:54:17,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 15:54:17,196 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 15:54:17,756 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 15:54:17,756 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-12-01 15:54:17,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:54:17 BoogieIcfgContainer [2020-12-01 15:54:17,760 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 15:54:17,762 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 15:54:17,762 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 15:54:17,766 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 15:54:17,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 03:54:16" (1/3) ... [2020-12-01 15:54:17,767 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fad7836 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:54:17, skipping insertion in model container [2020-12-01 15:54:17,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:54:16" (2/3) ... [2020-12-01 15:54:17,767 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fad7836 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:54:17, skipping insertion in model container [2020-12-01 15:54:17,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:54:17" (3/3) ... [2020-12-01 15:54:17,769 INFO L111 eAbstractionObserver]: Analyzing ICFG safe023_tso.oepc.i [2020-12-01 15:54:17,785 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-01 15:54:17,786 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 15:54:17,789 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-01 15:54:17,790 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-01 15:54:17,849 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:17,849 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:17,849 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:17,849 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:17,850 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:17,850 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:17,850 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:17,850 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:17,851 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:17,851 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:17,851 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:17,851 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:17,852 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:17,853 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:17,853 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:17,853 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:17,853 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:17,854 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:17,854 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:17,854 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:17,855 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:17,855 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:17,855 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:17,855 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:17,857 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:17,858 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:17,862 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:17,862 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:17,863 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:17,863 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:17,864 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:17,864 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:17,864 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:17,865 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:17,866 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:17,866 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:17,877 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:17,877 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:17,878 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:17,878 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:17,883 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:17,883 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:17,884 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:17,884 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:17,886 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:17,887 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:17,895 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:17,895 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:17,898 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-01 15:54:17,911 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-01 15:54:17,948 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 15:54:17,948 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 15:54:17,949 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 15:54:17,949 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 15:54:17,949 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 15:54:17,949 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 15:54:17,949 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 15:54:17,949 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 15:54:17,969 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-01 15:54:17,971 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 79 transitions, 173 flow [2020-12-01 15:54:17,976 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 79 transitions, 173 flow [2020-12-01 15:54:17,978 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 86 places, 79 transitions, 173 flow [2020-12-01 15:54:18,051 INFO L129 PetriNetUnfolder]: 3/76 cut-off events. [2020-12-01 15:54:18,051 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-01 15:54:18,056 INFO L84 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 76 events. 3/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 62 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-12-01 15:54:18,061 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-12-01 15:54:21,389 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 42 [2020-12-01 15:54:22,105 WARN L197 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-12-01 15:54:22,456 WARN L197 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-12-01 15:54:22,562 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-12-01 15:54:22,829 INFO L131 LiptonReduction]: Checked pairs total: 2926 [2020-12-01 15:54:22,829 INFO L133 LiptonReduction]: Total number of compositions: 72 [2020-12-01 15:54:22,836 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-12-01 15:54:22,867 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-12-01 15:54:22,869 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-12-01 15:54:22,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-01 15:54:22,876 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:54:22,877 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:54:22,877 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:54:22,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:54:22,882 INFO L82 PathProgramCache]: Analyzing trace with hash -1098074663, now seen corresponding path program 1 times [2020-12-01 15:54:22,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:54:22,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824802320] [2020-12-01 15:54:22,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:54:23,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:54:23,181 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 15:54:23,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824802320] [2020-12-01 15:54:23,182 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:54:23,183 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-01 15:54:23,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440718286] [2020-12-01 15:54:23,189 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 15:54:23,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:54:23,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 15:54:23,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 15:54:23,215 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-12-01 15:54:23,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:54:23,289 INFO L93 Difference]: Finished difference Result 266 states and 752 transitions. [2020-12-01 15:54:23,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 15:54:23,291 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-12-01 15:54:23,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:54:23,312 INFO L225 Difference]: With dead ends: 266 [2020-12-01 15:54:23,313 INFO L226 Difference]: Without dead ends: 202 [2020-12-01 15:54:23,315 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 15:54:23,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-12-01 15:54:23,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-12-01 15:54:23,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-12-01 15:54:23,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-12-01 15:54:23,408 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 8 [2020-12-01 15:54:23,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:54:23,409 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-12-01 15:54:23,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 15:54:23,409 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-12-01 15:54:23,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-01 15:54:23,412 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:54:23,413 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:54:23,413 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-01 15:54:23,413 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:54:23,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:54:23,416 INFO L82 PathProgramCache]: Analyzing trace with hash 1337858444, now seen corresponding path program 1 times [2020-12-01 15:54:23,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:54:23,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134957018] [2020-12-01 15:54:23,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:54:23,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:54:23,514 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 15:54:23,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134957018] [2020-12-01 15:54:23,515 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:54:23,515 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-01 15:54:23,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752837501] [2020-12-01 15:54:23,516 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 15:54:23,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:54:23,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 15:54:23,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 15:54:23,518 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 3 states. [2020-12-01 15:54:23,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:54:23,544 INFO L93 Difference]: Finished difference Result 284 states and 746 transitions. [2020-12-01 15:54:23,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 15:54:23,546 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-12-01 15:54:23,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:54:23,548 INFO L225 Difference]: With dead ends: 284 [2020-12-01 15:54:23,548 INFO L226 Difference]: Without dead ends: 164 [2020-12-01 15:54:23,549 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 15:54:23,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-12-01 15:54:23,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2020-12-01 15:54:23,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-12-01 15:54:23,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 422 transitions. [2020-12-01 15:54:23,562 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 422 transitions. Word has length 10 [2020-12-01 15:54:23,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:54:23,562 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 422 transitions. [2020-12-01 15:54:23,562 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 15:54:23,563 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 422 transitions. [2020-12-01 15:54:23,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-01 15:54:23,564 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:54:23,564 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:54:23,564 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-01 15:54:23,564 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:54:23,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:54:23,565 INFO L82 PathProgramCache]: Analyzing trace with hash -1440714027, now seen corresponding path program 1 times [2020-12-01 15:54:23,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:54:23,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429159603] [2020-12-01 15:54:23,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:54:23,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:54:23,641 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 15:54:23,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429159603] [2020-12-01 15:54:23,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:54:23,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 15:54:23,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425509574] [2020-12-01 15:54:23,642 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:54:23,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:54:23,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:54:23,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:54:23,643 INFO L87 Difference]: Start difference. First operand 164 states and 422 transitions. Second operand 4 states. [2020-12-01 15:54:23,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:54:23,668 INFO L93 Difference]: Finished difference Result 224 states and 564 transitions. [2020-12-01 15:54:23,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 15:54:23,669 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-01 15:54:23,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:54:23,671 INFO L225 Difference]: With dead ends: 224 [2020-12-01 15:54:23,671 INFO L226 Difference]: Without dead ends: 134 [2020-12-01 15:54:23,671 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 15:54:23,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-12-01 15:54:23,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2020-12-01 15:54:23,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-12-01 15:54:23,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 326 transitions. [2020-12-01 15:54:23,682 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 326 transitions. Word has length 11 [2020-12-01 15:54:23,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:54:23,683 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 326 transitions. [2020-12-01 15:54:23,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:54:23,683 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 326 transitions. [2020-12-01 15:54:23,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-01 15:54:23,684 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:54:23,684 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:54:23,684 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-01 15:54:23,684 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:54:23,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:54:23,685 INFO L82 PathProgramCache]: Analyzing trace with hash -1475569497, now seen corresponding path program 2 times [2020-12-01 15:54:23,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:54:23,685 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569727303] [2020-12-01 15:54:23,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:54:23,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:54:23,763 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 15:54:23,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569727303] [2020-12-01 15:54:23,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:54:23,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-01 15:54:23,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744471044] [2020-12-01 15:54:23,764 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 15:54:23,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:54:23,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 15:54:23,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 15:54:23,765 INFO L87 Difference]: Start difference. First operand 134 states and 326 transitions. Second operand 3 states. [2020-12-01 15:54:23,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:54:23,775 INFO L93 Difference]: Finished difference Result 128 states and 307 transitions. [2020-12-01 15:54:23,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 15:54:23,776 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-12-01 15:54:23,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:54:23,777 INFO L225 Difference]: With dead ends: 128 [2020-12-01 15:54:23,777 INFO L226 Difference]: Without dead ends: 128 [2020-12-01 15:54:23,778 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 15:54:23,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-12-01 15:54:23,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2020-12-01 15:54:23,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-12-01 15:54:23,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 307 transitions. [2020-12-01 15:54:23,787 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 307 transitions. Word has length 11 [2020-12-01 15:54:23,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:54:23,787 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 307 transitions. [2020-12-01 15:54:23,787 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 15:54:23,787 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 307 transitions. [2020-12-01 15:54:23,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-01 15:54:23,792 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:54:23,792 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:54:23,792 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-01 15:54:23,792 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:54:23,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:54:23,795 INFO L82 PathProgramCache]: Analyzing trace with hash 1501954764, now seen corresponding path program 1 times [2020-12-01 15:54:23,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:54:23,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590167641] [2020-12-01 15:54:23,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:54:23,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:54:23,867 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 15:54:23,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590167641] [2020-12-01 15:54:23,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:54:23,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-01 15:54:23,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659368703] [2020-12-01 15:54:23,868 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:54:23,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:54:23,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:54:23,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:54:23,869 INFO L87 Difference]: Start difference. First operand 128 states and 307 transitions. Second operand 4 states. [2020-12-01 15:54:23,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:54:23,896 INFO L93 Difference]: Finished difference Result 146 states and 340 transitions. [2020-12-01 15:54:23,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 15:54:23,897 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-12-01 15:54:23,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:54:23,898 INFO L225 Difference]: With dead ends: 146 [2020-12-01 15:54:23,898 INFO L226 Difference]: Without dead ends: 86 [2020-12-01 15:54:23,899 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 15:54:23,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-12-01 15:54:23,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2020-12-01 15:54:23,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-12-01 15:54:23,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 186 transitions. [2020-12-01 15:54:23,906 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 186 transitions. Word has length 12 [2020-12-01 15:54:23,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:54:23,906 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 186 transitions. [2020-12-01 15:54:23,907 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:54:23,907 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 186 transitions. [2020-12-01 15:54:23,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-01 15:54:23,907 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:54:23,908 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:54:23,912 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-01 15:54:23,912 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:54:23,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:54:23,913 INFO L82 PathProgramCache]: Analyzing trace with hash -698343546, now seen corresponding path program 1 times [2020-12-01 15:54:23,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:54:23,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050621071] [2020-12-01 15:54:23,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:54:23,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:54:23,990 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 15:54:23,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050621071] [2020-12-01 15:54:23,991 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:54:23,991 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-01 15:54:23,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277304090] [2020-12-01 15:54:23,993 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:54:23,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:54:23,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:54:23,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:54:23,994 INFO L87 Difference]: Start difference. First operand 86 states and 186 transitions. Second operand 4 states. [2020-12-01 15:54:24,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:54:24,030 INFO L93 Difference]: Finished difference Result 99 states and 199 transitions. [2020-12-01 15:54:24,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 15:54:24,030 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-12-01 15:54:24,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:54:24,031 INFO L225 Difference]: With dead ends: 99 [2020-12-01 15:54:24,031 INFO L226 Difference]: Without dead ends: 77 [2020-12-01 15:54:24,032 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 15:54:24,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-12-01 15:54:24,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2020-12-01 15:54:24,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-12-01 15:54:24,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 156 transitions. [2020-12-01 15:54:24,048 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 156 transitions. Word has length 13 [2020-12-01 15:54:24,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:54:24,048 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 156 transitions. [2020-12-01 15:54:24,049 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:54:24,049 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 156 transitions. [2020-12-01 15:54:24,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-01 15:54:24,049 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:54:24,050 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:54:24,050 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-01 15:54:24,050 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:54:24,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:54:24,050 INFO L82 PathProgramCache]: Analyzing trace with hash -1795509398, now seen corresponding path program 1 times [2020-12-01 15:54:24,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:54:24,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927875076] [2020-12-01 15:54:24,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:54:24,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:54:24,154 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 15:54:24,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927875076] [2020-12-01 15:54:24,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:54:24,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 15:54:24,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746264333] [2020-12-01 15:54:24,156 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-01 15:54:24,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:54:24,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-01 15:54:24,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:54:24,157 INFO L87 Difference]: Start difference. First operand 77 states and 156 transitions. Second operand 5 states. [2020-12-01 15:54:24,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:54:24,203 INFO L93 Difference]: Finished difference Result 78 states and 146 transitions. [2020-12-01 15:54:24,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-01 15:54:24,203 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-01 15:54:24,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:54:24,204 INFO L225 Difference]: With dead ends: 78 [2020-12-01 15:54:24,204 INFO L226 Difference]: Without dead ends: 63 [2020-12-01 15:54:24,205 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-01 15:54:24,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-12-01 15:54:24,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-12-01 15:54:24,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-12-01 15:54:24,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 116 transitions. [2020-12-01 15:54:24,210 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 116 transitions. Word has length 14 [2020-12-01 15:54:24,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:54:24,210 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 116 transitions. [2020-12-01 15:54:24,210 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-01 15:54:24,210 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 116 transitions. [2020-12-01 15:54:24,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-01 15:54:24,211 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:54:24,211 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:54:24,211 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-01 15:54:24,211 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:54:24,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:54:24,211 INFO L82 PathProgramCache]: Analyzing trace with hash 213970275, now seen corresponding path program 1 times [2020-12-01 15:54:24,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:54:24,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253333848] [2020-12-01 15:54:24,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:54:24,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:54:24,268 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 15:54:24,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253333848] [2020-12-01 15:54:24,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:54:24,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 15:54:24,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556148769] [2020-12-01 15:54:24,269 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-01 15:54:24,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:54:24,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-01 15:54:24,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-01 15:54:24,270 INFO L87 Difference]: Start difference. First operand 63 states and 116 transitions. Second operand 6 states. [2020-12-01 15:54:24,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:54:24,327 INFO L93 Difference]: Finished difference Result 60 states and 108 transitions. [2020-12-01 15:54:24,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-01 15:54:24,328 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-12-01 15:54:24,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:54:24,328 INFO L225 Difference]: With dead ends: 60 [2020-12-01 15:54:24,329 INFO L226 Difference]: Without dead ends: 54 [2020-12-01 15:54:24,329 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-01 15:54:24,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-12-01 15:54:24,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-12-01 15:54:24,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-12-01 15:54:24,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 98 transitions. [2020-12-01 15:54:24,331 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 98 transitions. Word has length 15 [2020-12-01 15:54:24,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:54:24,332 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 98 transitions. [2020-12-01 15:54:24,332 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-01 15:54:24,332 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 98 transitions. [2020-12-01 15:54:24,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-01 15:54:24,333 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:54:24,333 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 15:54:24,333 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-01 15:54:24,333 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:54:24,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:54:24,334 INFO L82 PathProgramCache]: Analyzing trace with hash -534648938, now seen corresponding path program 1 times [2020-12-01 15:54:24,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:54:24,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141523774] [2020-12-01 15:54:24,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:54:24,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:54:24,369 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 15:54:24,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141523774] [2020-12-01 15:54:24,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:54:24,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 15:54:24,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135190761] [2020-12-01 15:54:24,370 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:54:24,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:54:24,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:54:24,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:54:24,371 INFO L87 Difference]: Start difference. First operand 54 states and 98 transitions. Second operand 4 states. [2020-12-01 15:54:24,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:54:24,385 INFO L93 Difference]: Finished difference Result 53 states and 97 transitions. [2020-12-01 15:54:24,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 15:54:24,386 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-12-01 15:54:24,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:54:24,386 INFO L225 Difference]: With dead ends: 53 [2020-12-01 15:54:24,386 INFO L226 Difference]: Without dead ends: 0 [2020-12-01 15:54:24,386 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 15:54:24,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-01 15:54:24,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-01 15:54:24,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-01 15:54:24,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-01 15:54:24,387 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-12-01 15:54:24,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:54:24,387 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-01 15:54:24,388 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:54:24,388 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-01 15:54:24,388 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-01 15:54:24,388 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-01 15:54:24,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 03:54:24 BasicIcfg [2020-12-01 15:54:24,391 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 15:54:24,392 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 15:54:24,392 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 15:54:24,392 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 15:54:24,392 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:54:17" (3/4) ... [2020-12-01 15:54:24,395 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-01 15:54:24,401 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-01 15:54:24,401 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-01 15:54:24,402 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-01 15:54:24,406 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-12-01 15:54:24,406 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-01 15:54:24,407 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-01 15:54:24,407 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-01 15:54:24,446 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_7eef70d3-3a9a-4c27-a105-701400ff43d4/bin/uautomizer/witness.graphml [2020-12-01 15:54:24,447 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 15:54:24,448 INFO L168 Benchmark]: Toolchain (without parser) took 8267.07 ms. Allocated memory was 81.8 MB in the beginning and 174.1 MB in the end (delta: 92.3 MB). Free memory was 51.5 MB in the beginning and 111.5 MB in the end (delta: -60.1 MB). Peak memory consumption was 32.8 MB. Max. memory is 16.1 GB. [2020-12-01 15:54:24,448 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 81.8 MB. Free memory is still 37.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:54:24,449 INFO L168 Benchmark]: CACSL2BoogieTranslator took 736.64 ms. Allocated memory was 81.8 MB in the beginning and 98.6 MB in the end (delta: 16.8 MB). Free memory was 51.2 MB in the beginning and 52.0 MB in the end (delta: -773.7 kB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-01 15:54:24,450 INFO L168 Benchmark]: Boogie Procedure Inliner took 101.45 ms. Allocated memory is still 98.6 MB. Free memory was 52.0 MB in the beginning and 76.0 MB in the end (delta: -24.0 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. [2020-12-01 15:54:24,451 INFO L168 Benchmark]: Boogie Preprocessor took 56.20 ms. Allocated memory is still 98.6 MB. Free memory was 76.0 MB in the beginning and 74.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:54:24,451 INFO L168 Benchmark]: RCFGBuilder took 672.80 ms. Allocated memory is still 98.6 MB. Free memory was 74.9 MB in the beginning and 53.0 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-12-01 15:54:24,452 INFO L168 Benchmark]: TraceAbstraction took 6629.65 ms. Allocated memory was 98.6 MB in the beginning and 174.1 MB in the end (delta: 75.5 MB). Free memory was 52.5 MB in the beginning and 113.6 MB in the end (delta: -61.1 MB). Peak memory consumption was 15.2 MB. Max. memory is 16.1 GB. [2020-12-01 15:54:24,452 INFO L168 Benchmark]: Witness Printer took 55.17 ms. Allocated memory is still 174.1 MB. Free memory was 113.6 MB in the beginning and 111.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:54:24,456 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 81.8 MB. Free memory is still 37.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 736.64 ms. Allocated memory was 81.8 MB in the beginning and 98.6 MB in the end (delta: 16.8 MB). Free memory was 51.2 MB in the beginning and 52.0 MB in the end (delta: -773.7 kB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 101.45 ms. Allocated memory is still 98.6 MB. Free memory was 52.0 MB in the beginning and 76.0 MB in the end (delta: -24.0 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 56.20 ms. Allocated memory is still 98.6 MB. Free memory was 76.0 MB in the beginning and 74.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 672.80 ms. Allocated memory is still 98.6 MB. Free memory was 74.9 MB in the beginning and 53.0 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6629.65 ms. Allocated memory was 98.6 MB in the beginning and 174.1 MB in the end (delta: 75.5 MB). Free memory was 52.5 MB in the beginning and 113.6 MB in the end (delta: -61.1 MB). Peak memory consumption was 15.2 MB. Max. memory is 16.1 GB. * Witness Printer took 55.17 ms. Allocated memory is still 174.1 MB. Free memory was 113.6 MB in the beginning and 111.5 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 1039 VarBasedMoverChecksPositive, 51 VarBasedMoverChecksNegative, 12 SemBasedMoverChecksPositive, 39 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.5s, 89 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.8s, 86 PlacesBefore, 31 PlacesAfterwards, 79 TransitionsBefore, 22 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 44 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 2 ChoiceCompositions, 72 TotalNumberOfCompositions, 2926 MoverChecksTotal - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.4s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.9s, HoareTripleCheckerStatistics: 176 SDtfs, 132 SDslu, 185 SDs, 0 SdLazy, 114 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 111 NumberOfCodeBlocks, 111 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 102 ConstructedInterpolants, 0 QuantifiedInterpolants, 3338 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...