./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/test-easy6.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c503be2a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/test-easy6.wvr.c -s /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c4f1c1d34553b5e02fd0ccc25809d567f80a5db3 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-c503be2 [2021-10-13 18:45:02,609 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 18:45:02,615 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 18:45:02,696 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 18:45:02,700 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 18:45:02,706 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 18:45:02,716 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 18:45:02,719 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 18:45:02,729 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 18:45:02,730 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 18:45:02,736 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 18:45:02,738 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 18:45:02,740 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 18:45:02,742 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 18:45:02,749 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 18:45:02,750 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 18:45:02,757 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 18:45:02,759 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 18:45:02,769 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 18:45:02,777 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 18:45:02,782 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 18:45:02,789 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 18:45:02,791 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 18:45:02,792 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 18:45:02,802 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 18:45:02,807 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 18:45:02,808 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 18:45:02,810 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 18:45:02,811 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 18:45:02,812 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 18:45:02,812 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 18:45:02,813 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 18:45:02,821 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 18:45:02,823 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 18:45:02,824 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 18:45:02,827 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 18:45:02,829 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 18:45:02,829 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 18:45:02,829 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 18:45:02,832 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 18:45:02,836 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 18:45:02,846 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-13 18:45:02,912 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 18:45:02,912 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 18:45:02,912 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 18:45:02,913 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 18:45:02,916 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 18:45:02,917 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 18:45:02,917 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 18:45:02,917 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 18:45:02,917 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 18:45:02,918 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 18:45:02,918 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 18:45:02,918 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 18:45:02,918 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 18:45:02,919 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 18:45:02,919 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 18:45:02,919 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 18:45:02,920 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 18:45:02,920 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 18:45:02,920 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 18:45:02,920 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 18:45:02,921 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 18:45:02,925 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 18:45:02,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 18:45:02,926 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 18:45:02,926 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 18:45:02,926 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 18:45:02,926 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 18:45:02,927 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 18:45:02,927 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 18:45:02,942 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 18:45:02,942 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c4f1c1d34553b5e02fd0ccc25809d567f80a5db3 [2021-10-13 18:45:03,632 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 18:45:03,682 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 18:45:03,686 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 18:45:03,689 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 18:45:03,690 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 18:45:03,694 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/test-easy6.wvr.c [2021-10-13 18:45:03,833 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b657e185c/b45d397ac0bd4fff988dc6ed07c70d5f/FLAG2e01a50e7 [2021-10-13 18:45:04,847 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 18:45:04,849 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/test-easy6.wvr.c [2021-10-13 18:45:04,876 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b657e185c/b45d397ac0bd4fff988dc6ed07c70d5f/FLAG2e01a50e7 [2021-10-13 18:45:05,105 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b657e185c/b45d397ac0bd4fff988dc6ed07c70d5f [2021-10-13 18:45:05,111 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 18:45:05,154 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 18:45:05,176 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 18:45:05,176 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 18:45:05,185 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 18:45:05,189 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:45:05" (1/1) ... [2021-10-13 18:45:05,196 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@435b0945 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:45:05, skipping insertion in model container [2021-10-13 18:45:05,196 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:45:05" (1/1) ... [2021-10-13 18:45:05,212 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 18:45:05,297 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 18:45:05,763 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/test-easy6.wvr.c[2038,2051] [2021-10-13 18:45:05,772 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 18:45:05,793 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 18:45:05,855 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/test-easy6.wvr.c[2038,2051] [2021-10-13 18:45:05,857 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 18:45:05,904 INFO L208 MainTranslator]: Completed translation [2021-10-13 18:45:05,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:45:05 WrapperNode [2021-10-13 18:45:05,907 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 18:45:05,910 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 18:45:05,910 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 18:45:05,911 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 18:45:05,921 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:45:05" (1/1) ... [2021-10-13 18:45:05,932 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:45:05" (1/1) ... [2021-10-13 18:45:05,998 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 18:45:06,002 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 18:45:06,002 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 18:45:06,003 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 18:45:06,022 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:45:05" (1/1) ... [2021-10-13 18:45:06,022 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:45:05" (1/1) ... [2021-10-13 18:45:06,040 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:45:05" (1/1) ... [2021-10-13 18:45:06,040 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:45:05" (1/1) ... [2021-10-13 18:45:06,055 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:45:05" (1/1) ... [2021-10-13 18:45:06,059 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:45:05" (1/1) ... [2021-10-13 18:45:06,061 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:45:05" (1/1) ... [2021-10-13 18:45:06,066 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 18:45:06,072 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 18:45:06,072 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 18:45:06,073 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 18:45:06,074 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:45:05" (1/1) ... [2021-10-13 18:45:06,085 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 18:45:06,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 18:45:06,157 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 18:45:06,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 18:45:06,253 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-13 18:45:06,254 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-13 18:45:06,255 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-13 18:45:06,256 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-13 18:45:06,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 18:45:06,256 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 18:45:06,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-13 18:45:06,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 18:45:06,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 18:45:06,258 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-13 18:45:06,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 18:45:06,261 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-13 18:45:06,624 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 18:45:06,625 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-10-13 18:45:06,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:45:06 BoogieIcfgContainer [2021-10-13 18:45:06,628 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 18:45:06,633 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 18:45:06,633 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 18:45:06,640 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 18:45:06,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:45:05" (1/3) ... [2021-10-13 18:45:06,641 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23ca6bf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:45:06, skipping insertion in model container [2021-10-13 18:45:06,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:45:05" (2/3) ... [2021-10-13 18:45:06,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23ca6bf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:45:06, skipping insertion in model container [2021-10-13 18:45:06,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:45:06" (3/3) ... [2021-10-13 18:45:06,646 INFO L111 eAbstractionObserver]: Analyzing ICFG test-easy6.wvr.c [2021-10-13 18:45:06,659 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-13 18:45:06,659 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 18:45:06,659 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 18:45:06,660 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-13 18:45:06,717 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:45:06,723 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:45:06,723 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:45:06,724 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:45:06,724 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:45:06,724 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:45:06,725 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:45:06,725 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:45:06,725 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:45:06,726 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:45:06,726 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:45:06,726 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:45:06,727 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:45:06,727 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:45:06,727 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:45:06,728 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:45:06,728 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:45:06,728 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:45:06,729 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:45:06,729 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:45:06,729 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:45:06,730 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:45:06,730 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:45:06,730 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:45:06,731 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:45:06,736 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:45:06,736 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:45:06,737 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:45:06,738 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:45:06,738 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:45:06,739 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:45:06,739 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:45:06,739 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:45:06,740 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:45:06,740 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:45:06,740 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:45:06,741 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:45:06,746 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:45:06,762 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:45:06,762 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:45:06,763 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:45:06,763 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:45:06,763 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:45:06,763 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:45:06,764 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:45:06,764 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:45:06,764 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:45:06,764 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:45:06,764 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:45:06,765 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:45:06,767 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:45:06,767 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:45:06,768 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:45:06,768 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:45:06,768 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:45:06,769 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:45:06,774 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:45:06,775 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:45:06,775 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:45:06,775 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:45:06,800 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:45:06,800 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:45:06,800 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:45:06,800 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:45:06,866 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-13 18:45:06,961 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 18:45:06,974 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 18:45:06,975 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-13 18:45:07,006 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-13 18:45:07,030 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 99 places, 97 transitions, 210 flow [2021-10-13 18:45:07,036 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 99 places, 97 transitions, 210 flow [2021-10-13 18:45:07,041 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 99 places, 97 transitions, 210 flow [2021-10-13 18:45:07,143 INFO L129 PetriNetUnfolder]: 5/95 cut-off events. [2021-10-13 18:45:07,143 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-13 18:45:07,153 INFO L84 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 95 events. 5/95 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 73 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2021-10-13 18:45:07,159 INFO L116 LiptonReduction]: Number of co-enabled transitions 1512 [2021-10-13 18:45:11,221 INFO L131 LiptonReduction]: Checked pairs total: 6327 [2021-10-13 18:45:11,221 INFO L133 LiptonReduction]: Total number of compositions: 86 [2021-10-13 18:45:11,236 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 37 places, 31 transitions, 78 flow [2021-10-13 18:45:11,298 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 244 states, 243 states have (on average 2.3127572016460904) internal successors, (562), 243 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 18:45:11,304 INFO L276 IsEmpty]: Start isEmpty. Operand has 244 states, 243 states have (on average 2.3127572016460904) internal successors, (562), 243 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 18:45:11,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-13 18:45:11,318 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 18:45:11,318 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 18:45:11,319 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 18:45:11,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 18:45:11,326 INFO L82 PathProgramCache]: Analyzing trace with hash -521772681, now seen corresponding path program 1 times [2021-10-13 18:45:11,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 18:45:11,338 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515401083] [2021-10-13 18:45:11,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 18:45:11,340 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 18:45:11,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 18:45:11,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 18:45:11,531 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 18:45:11,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515401083] [2021-10-13 18:45:11,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515401083] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 18:45:11,532 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 18:45:11,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 18:45:11,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893043349] [2021-10-13 18:45:11,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 18:45:11,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 18:45:11,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 18:45:11,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 18:45:11,561 INFO L87 Difference]: Start difference. First operand has 244 states, 243 states have (on average 2.3127572016460904) internal successors, (562), 243 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 18:45:11,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 18:45:11,587 INFO L93 Difference]: Finished difference Result 244 states and 540 transitions. [2021-10-13 18:45:11,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 18:45:11,589 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-13 18:45:11,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 18:45:11,610 INFO L225 Difference]: With dead ends: 244 [2021-10-13 18:45:11,610 INFO L226 Difference]: Without dead ends: 244 [2021-10-13 18:45:11,612 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 18:45:11,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2021-10-13 18:45:11,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2021-10-13 18:45:11,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 243 states have (on average 2.2222222222222223) internal successors, (540), 243 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 18:45:11,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 540 transitions. [2021-10-13 18:45:11,703 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 540 transitions. Word has length 19 [2021-10-13 18:45:11,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 18:45:11,704 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 540 transitions. [2021-10-13 18:45:11,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 18:45:11,706 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 540 transitions. [2021-10-13 18:45:11,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-13 18:45:11,715 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 18:45:11,715 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 18:45:11,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 18:45:11,716 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 18:45:11,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 18:45:11,718 INFO L82 PathProgramCache]: Analyzing trace with hash -494531042, now seen corresponding path program 1 times [2021-10-13 18:45:11,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 18:45:11,719 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539257485] [2021-10-13 18:45:11,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 18:45:11,720 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 18:45:11,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 18:45:12,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 18:45:12,469 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 18:45:12,469 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539257485] [2021-10-13 18:45:12,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539257485] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 18:45:12,469 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 18:45:12,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 18:45:12,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165482038] [2021-10-13 18:45:12,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 18:45:12,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 18:45:12,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 18:45:12,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-13 18:45:12,473 INFO L87 Difference]: Start difference. First operand 244 states and 540 transitions. Second operand has 7 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 18:45:12,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 18:45:12,748 INFO L93 Difference]: Finished difference Result 295 states and 619 transitions. [2021-10-13 18:45:12,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 18:45:12,749 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-10-13 18:45:12,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 18:45:12,760 INFO L225 Difference]: With dead ends: 295 [2021-10-13 18:45:12,760 INFO L226 Difference]: Without dead ends: 230 [2021-10-13 18:45:12,761 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 460.0ms TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-10-13 18:45:12,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2021-10-13 18:45:12,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 198. [2021-10-13 18:45:12,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 2.203045685279188) internal successors, (434), 197 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 18:45:12,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 434 transitions. [2021-10-13 18:45:12,775 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 434 transitions. Word has length 27 [2021-10-13 18:45:12,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 18:45:12,775 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 434 transitions. [2021-10-13 18:45:12,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 18:45:12,776 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 434 transitions. [2021-10-13 18:45:12,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-13 18:45:12,777 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 18:45:12,777 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 18:45:12,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 18:45:12,778 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 18:45:12,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 18:45:12,778 INFO L82 PathProgramCache]: Analyzing trace with hash 139317480, now seen corresponding path program 2 times [2021-10-13 18:45:12,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 18:45:12,779 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735148658] [2021-10-13 18:45:12,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 18:45:12,780 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 18:45:12,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 18:45:12,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 18:45:12,964 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 18:45:12,965 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735148658] [2021-10-13 18:45:12,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735148658] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 18:45:12,966 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 18:45:12,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-13 18:45:12,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345716131] [2021-10-13 18:45:12,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 18:45:12,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 18:45:12,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 18:45:12,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-10-13 18:45:12,972 INFO L87 Difference]: Start difference. First operand 198 states and 434 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 18:45:13,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 18:45:13,223 INFO L93 Difference]: Finished difference Result 352 states and 761 transitions. [2021-10-13 18:45:13,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 18:45:13,224 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-10-13 18:45:13,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 18:45:13,230 INFO L225 Difference]: With dead ends: 352 [2021-10-13 18:45:13,230 INFO L226 Difference]: Without dead ends: 272 [2021-10-13 18:45:13,232 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 167.1ms TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-10-13 18:45:13,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-10-13 18:45:13,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 168. [2021-10-13 18:45:13,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 167 states have (on average 2.179640718562874) internal successors, (364), 167 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 18:45:13,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 364 transitions. [2021-10-13 18:45:13,262 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 364 transitions. Word has length 27 [2021-10-13 18:45:13,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 18:45:13,262 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 364 transitions. [2021-10-13 18:45:13,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 18:45:13,263 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 364 transitions. [2021-10-13 18:45:13,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-13 18:45:13,265 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 18:45:13,265 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 18:45:13,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 18:45:13,267 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 18:45:13,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 18:45:13,268 INFO L82 PathProgramCache]: Analyzing trace with hash 1617785826, now seen corresponding path program 3 times [2021-10-13 18:45:13,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 18:45:13,268 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382473896] [2021-10-13 18:45:13,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 18:45:13,270 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 18:45:13,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 18:45:13,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 18:45:13,412 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 18:45:13,415 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382473896] [2021-10-13 18:45:13,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382473896] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 18:45:13,416 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 18:45:13,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 18:45:13,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546669130] [2021-10-13 18:45:13,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 18:45:13,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 18:45:13,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 18:45:13,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 18:45:13,420 INFO L87 Difference]: Start difference. First operand 168 states and 364 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 18:45:13,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 18:45:13,453 INFO L93 Difference]: Finished difference Result 172 states and 360 transitions. [2021-10-13 18:45:13,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 18:45:13,454 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-10-13 18:45:13,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 18:45:13,459 INFO L225 Difference]: With dead ends: 172 [2021-10-13 18:45:13,460 INFO L226 Difference]: Without dead ends: 156 [2021-10-13 18:45:13,460 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 18:45:13,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-10-13 18:45:13,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2021-10-13 18:45:13,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 155 states have (on average 2.1548387096774193) internal successors, (334), 155 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 18:45:13,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 334 transitions. [2021-10-13 18:45:13,477 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 334 transitions. Word has length 27 [2021-10-13 18:45:13,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 18:45:13,478 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 334 transitions. [2021-10-13 18:45:13,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 18:45:13,478 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 334 transitions. [2021-10-13 18:45:13,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-13 18:45:13,480 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 18:45:13,481 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 18:45:13,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-13 18:45:13,481 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 18:45:13,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 18:45:13,483 INFO L82 PathProgramCache]: Analyzing trace with hash -2078675490, now seen corresponding path program 4 times [2021-10-13 18:45:13,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 18:45:13,484 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038470562] [2021-10-13 18:45:13,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 18:45:13,485 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 18:45:13,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 18:45:13,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 18:45:13,649 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 18:45:13,649 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038470562] [2021-10-13 18:45:13,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038470562] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 18:45:13,650 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 18:45:13,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-13 18:45:13,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697356915] [2021-10-13 18:45:13,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 18:45:13,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 18:45:13,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 18:45:13,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-13 18:45:13,652 INFO L87 Difference]: Start difference. First operand 156 states and 334 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 18:45:13,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 18:45:13,810 INFO L93 Difference]: Finished difference Result 294 states and 613 transitions. [2021-10-13 18:45:13,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 18:45:13,811 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-10-13 18:45:13,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 18:45:13,813 INFO L225 Difference]: With dead ends: 294 [2021-10-13 18:45:13,813 INFO L226 Difference]: Without dead ends: 256 [2021-10-13 18:45:13,814 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 110.0ms TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-10-13 18:45:13,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2021-10-13 18:45:13,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 152. [2021-10-13 18:45:13,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 2.1456953642384105) internal successors, (324), 151 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 18:45:13,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 324 transitions. [2021-10-13 18:45:13,831 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 324 transitions. Word has length 27 [2021-10-13 18:45:13,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 18:45:13,831 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 324 transitions. [2021-10-13 18:45:13,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 18:45:13,832 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 324 transitions. [2021-10-13 18:45:13,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-13 18:45:13,833 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 18:45:13,833 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 18:45:13,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-13 18:45:13,833 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 18:45:13,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 18:45:13,834 INFO L82 PathProgramCache]: Analyzing trace with hash -1274919172, now seen corresponding path program 5 times [2021-10-13 18:45:13,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 18:45:13,834 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376171256] [2021-10-13 18:45:13,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 18:45:13,835 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 18:45:13,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 18:45:13,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 18:45:13,942 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 18:45:13,942 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376171256] [2021-10-13 18:45:13,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376171256] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 18:45:13,943 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 18:45:13,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-13 18:45:13,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33018013] [2021-10-13 18:45:13,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 18:45:13,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 18:45:13,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 18:45:13,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-13 18:45:13,945 INFO L87 Difference]: Start difference. First operand 152 states and 324 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 18:45:14,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 18:45:14,072 INFO L93 Difference]: Finished difference Result 266 states and 549 transitions. [2021-10-13 18:45:14,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 18:45:14,072 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-10-13 18:45:14,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 18:45:14,074 INFO L225 Difference]: With dead ends: 266 [2021-10-13 18:45:14,074 INFO L226 Difference]: Without dead ends: 232 [2021-10-13 18:45:14,075 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 84.9ms TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-10-13 18:45:14,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2021-10-13 18:45:14,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 158. [2021-10-13 18:45:14,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 157 states have (on average 2.121019108280255) internal successors, (333), 157 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 18:45:14,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 333 transitions. [2021-10-13 18:45:14,082 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 333 transitions. Word has length 27 [2021-10-13 18:45:14,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 18:45:14,082 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 333 transitions. [2021-10-13 18:45:14,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 18:45:14,083 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 333 transitions. [2021-10-13 18:45:14,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-13 18:45:14,084 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 18:45:14,084 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 18:45:14,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-13 18:45:14,084 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 18:45:14,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 18:45:14,085 INFO L82 PathProgramCache]: Analyzing trace with hash 1137802774, now seen corresponding path program 6 times [2021-10-13 18:45:14,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 18:45:14,085 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550941437] [2021-10-13 18:45:14,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 18:45:14,086 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 18:45:14,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 18:45:14,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 18:45:14,130 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 18:45:14,130 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550941437] [2021-10-13 18:45:14,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550941437] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 18:45:14,131 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 18:45:14,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 18:45:14,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221776744] [2021-10-13 18:45:14,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 18:45:14,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 18:45:14,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 18:45:14,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 18:45:14,133 INFO L87 Difference]: Start difference. First operand 158 states and 333 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 18:45:14,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 18:45:14,151 INFO L93 Difference]: Finished difference Result 172 states and 350 transitions. [2021-10-13 18:45:14,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 18:45:14,152 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-10-13 18:45:14,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 18:45:14,153 INFO L225 Difference]: With dead ends: 172 [2021-10-13 18:45:14,153 INFO L226 Difference]: Without dead ends: 144 [2021-10-13 18:45:14,154 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 18:45:14,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-10-13 18:45:14,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2021-10-13 18:45:14,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 2.090909090909091) internal successors, (299), 143 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 18:45:14,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 299 transitions. [2021-10-13 18:45:14,167 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 299 transitions. Word has length 27 [2021-10-13 18:45:14,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 18:45:14,167 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 299 transitions. [2021-10-13 18:45:14,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 18:45:14,167 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 299 transitions. [2021-10-13 18:45:14,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-13 18:45:14,169 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 18:45:14,169 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 18:45:14,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-13 18:45:14,170 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 18:45:14,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 18:45:14,170 INFO L82 PathProgramCache]: Analyzing trace with hash -82938396, now seen corresponding path program 7 times [2021-10-13 18:45:14,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 18:45:14,171 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114079705] [2021-10-13 18:45:14,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 18:45:14,171 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 18:45:14,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 18:45:14,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 18:45:14,313 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 18:45:14,313 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114079705] [2021-10-13 18:45:14,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114079705] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 18:45:14,314 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 18:45:14,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-13 18:45:14,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135668342] [2021-10-13 18:45:14,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 18:45:14,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 18:45:14,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 18:45:14,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-10-13 18:45:14,321 INFO L87 Difference]: Start difference. First operand 144 states and 299 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 18:45:14,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 18:45:14,483 INFO L93 Difference]: Finished difference Result 122 states and 246 transitions. [2021-10-13 18:45:14,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 18:45:14,484 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-10-13 18:45:14,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 18:45:14,485 INFO L225 Difference]: With dead ends: 122 [2021-10-13 18:45:14,485 INFO L226 Difference]: Without dead ends: 122 [2021-10-13 18:45:14,486 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 111.7ms TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2021-10-13 18:45:14,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-10-13 18:45:14,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2021-10-13 18:45:14,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 121 states have (on average 2.0330578512396693) internal successors, (246), 121 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 18:45:14,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 246 transitions. [2021-10-13 18:45:14,491 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 246 transitions. Word has length 27 [2021-10-13 18:45:14,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 18:45:14,491 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 246 transitions. [2021-10-13 18:45:14,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 18:45:14,492 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 246 transitions. [2021-10-13 18:45:14,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-13 18:45:14,493 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 18:45:14,493 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 18:45:14,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-13 18:45:14,493 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 18:45:14,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 18:45:14,496 INFO L82 PathProgramCache]: Analyzing trace with hash -2139910598, now seen corresponding path program 8 times [2021-10-13 18:45:14,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 18:45:14,503 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887986926] [2021-10-13 18:45:14,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 18:45:14,505 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 18:45:14,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 18:45:14,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 18:45:14,856 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 18:45:14,856 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887986926] [2021-10-13 18:45:14,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887986926] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 18:45:14,857 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 18:45:14,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-13 18:45:14,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979513329] [2021-10-13 18:45:14,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 18:45:14,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 18:45:14,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 18:45:14,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-10-13 18:45:14,859 INFO L87 Difference]: Start difference. First operand 122 states and 246 transitions. Second operand has 9 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 18:45:15,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 18:45:15,146 INFO L93 Difference]: Finished difference Result 124 states and 247 transitions. [2021-10-13 18:45:15,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 18:45:15,147 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-10-13 18:45:15,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 18:45:15,148 INFO L225 Difference]: With dead ends: 124 [2021-10-13 18:45:15,148 INFO L226 Difference]: Without dead ends: 112 [2021-10-13 18:45:15,149 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 282.5ms TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2021-10-13 18:45:15,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-10-13 18:45:15,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2021-10-13 18:45:15,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.990990990990991) internal successors, (221), 111 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 18:45:15,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 221 transitions. [2021-10-13 18:45:15,154 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 221 transitions. Word has length 27 [2021-10-13 18:45:15,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 18:45:15,154 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 221 transitions. [2021-10-13 18:45:15,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 18:45:15,155 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 221 transitions. [2021-10-13 18:45:15,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-13 18:45:15,155 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 18:45:15,155 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 18:45:15,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-13 18:45:15,157 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 18:45:15,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 18:45:15,157 INFO L82 PathProgramCache]: Analyzing trace with hash 382124844, now seen corresponding path program 9 times [2021-10-13 18:45:15,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 18:45:15,158 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33449749] [2021-10-13 18:45:15,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 18:45:15,159 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 18:45:15,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 18:45:15,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 18:45:15,915 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 18:45:15,915 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33449749] [2021-10-13 18:45:15,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33449749] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 18:45:15,915 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 18:45:15,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 18:45:15,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334682487] [2021-10-13 18:45:15,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 18:45:15,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 18:45:15,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 18:45:15,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-13 18:45:15,920 INFO L87 Difference]: Start difference. First operand 112 states and 221 transitions. Second operand has 7 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 18:45:15,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 18:45:15,994 INFO L93 Difference]: Finished difference Result 111 states and 220 transitions. [2021-10-13 18:45:15,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 18:45:15,995 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-10-13 18:45:15,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 18:45:15,995 INFO L225 Difference]: With dead ends: 111 [2021-10-13 18:45:15,995 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 18:45:15,996 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 453.9ms TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-10-13 18:45:15,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 18:45:15,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 18:45:15,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 18:45:15,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 18:45:15,996 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2021-10-13 18:45:15,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 18:45:15,997 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 18:45:15,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 18:45:15,997 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 18:45:15,997 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 18:45:16,000 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 18:45:16,001 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-13 18:45:16,001 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-13 18:45:16,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-13 18:45:16,009 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-13 18:45:16,009 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 18:45:16,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 06:45:16 BasicIcfg [2021-10-13 18:45:16,011 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 18:45:16,012 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 18:45:16,012 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 18:45:16,012 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 18:45:16,013 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:45:06" (3/4) ... [2021-10-13 18:45:16,018 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 18:45:16,036 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-10-13 18:45:16,036 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-10-13 18:45:16,049 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-10-13 18:45:16,050 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-13 18:45:16,050 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 18:45:16,050 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 18:45:16,145 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-10-13 18:45:16,145 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 18:45:16,150 INFO L168 Benchmark]: Toolchain (without parser) took 11030.13 ms. Allocated memory was 52.4 MB in the beginning and 75.5 MB in the end (delta: 23.1 MB). Free memory was 28.8 MB in the beginning and 33.9 MB in the end (delta: -5.1 MB). Peak memory consumption was 21.2 MB. Max. memory is 16.1 GB. [2021-10-13 18:45:16,158 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 41.9 MB. Free memory was 18.9 MB in the beginning and 18.8 MB in the end (delta: 31.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 18:45:16,159 INFO L168 Benchmark]: CACSL2BoogieTranslator took 731.97 ms. Allocated memory is still 52.4 MB. Free memory was 28.5 MB in the beginning and 29.5 MB in the end (delta: -1.1 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2021-10-13 18:45:16,160 INFO L168 Benchmark]: Boogie Procedure Inliner took 90.79 ms. Allocated memory is still 52.4 MB. Free memory was 29.5 MB in the beginning and 27.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 18:45:16,163 INFO L168 Benchmark]: Boogie Preprocessor took 69.04 ms. Allocated memory is still 52.4 MB. Free memory was 27.9 MB in the beginning and 26.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 18:45:16,164 INFO L168 Benchmark]: RCFGBuilder took 556.14 ms. Allocated memory is still 52.4 MB. Free memory was 26.7 MB in the beginning and 26.9 MB in the end (delta: -160.6 kB). Peak memory consumption was 5.1 MB. Max. memory is 16.1 GB. [2021-10-13 18:45:16,164 INFO L168 Benchmark]: TraceAbstraction took 9378.05 ms. Allocated memory was 52.4 MB in the beginning and 75.5 MB in the end (delta: 23.1 MB). Free memory was 26.5 MB in the beginning and 36.9 MB in the end (delta: -10.4 MB). Peak memory consumption was 12.8 MB. Max. memory is 16.1 GB. [2021-10-13 18:45:16,165 INFO L168 Benchmark]: Witness Printer took 133.78 ms. Allocated memory is still 75.5 MB. Free memory was 36.6 MB in the beginning and 33.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 18:45:16,171 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 41.9 MB. Free memory was 18.9 MB in the beginning and 18.8 MB in the end (delta: 31.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 731.97 ms. Allocated memory is still 52.4 MB. Free memory was 28.5 MB in the beginning and 29.5 MB in the end (delta: -1.1 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 90.79 ms. Allocated memory is still 52.4 MB. Free memory was 29.5 MB in the beginning and 27.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 69.04 ms. Allocated memory is still 52.4 MB. Free memory was 27.9 MB in the beginning and 26.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 556.14 ms. Allocated memory is still 52.4 MB. Free memory was 26.7 MB in the beginning and 26.9 MB in the end (delta: -160.6 kB). Peak memory consumption was 5.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9378.05 ms. Allocated memory was 52.4 MB in the beginning and 75.5 MB in the end (delta: 23.1 MB). Free memory was 26.5 MB in the beginning and 36.9 MB in the end (delta: -10.4 MB). Peak memory consumption was 12.8 MB. Max. memory is 16.1 GB. * Witness Printer took 133.78 ms. Allocated memory is still 75.5 MB. Free memory was 36.6 MB in the beginning and 33.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4184.9ms, 99 PlacesBefore, 37 PlacesAfterwards, 97 TransitionsBefore, 31 TransitionsAfterwards, 1512 CoEnabledTransitionPairs, 10 FixpointIterations, 39 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 11 ConcurrentYvCompositions, 4 ChoiceCompositions, 86 TotalNumberOfCompositions, 6327 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3770, positive: 3437, positive conditional: 0, positive unconditional: 3437, negative: 333, negative conditional: 0, negative unconditional: 333, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1289, positive: 1240, positive conditional: 0, positive unconditional: 1240, negative: 49, negative conditional: 0, negative unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1289, positive: 1220, positive conditional: 0, positive unconditional: 1220, negative: 69, negative conditional: 0, negative unconditional: 69, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 69, positive: 20, positive conditional: 0, positive unconditional: 20, negative: 49, negative conditional: 0, negative unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 101, positive: 17, positive conditional: 0, positive unconditional: 17, negative: 84, negative conditional: 0, negative unconditional: 84, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3770, positive: 2197, positive conditional: 0, positive unconditional: 2197, negative: 284, negative conditional: 0, negative unconditional: 284, unknown: 1289, unknown conditional: 0, unknown unconditional: 1289] , Statistics on independence cache: Total cache size (in pairs): 223, Positive cache size: 195, Positive conditional cache size: 0, Positive unconditional cache size: 195, Negative cache size: 28, Negative conditional cache size: 0, Negative unconditional cache size: 28 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 80]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 135 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 9052.2ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 38.8ms, AutomataDifference: 1519.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 4323.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 380 SDtfs, 604 SDslu, 977 SDs, 0 SdLazy, 392 SolverSat, 53 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 497.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 93 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 1693.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=244occurred in iteration=0, InterpolantAutomatonStates: 67, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 177.6ms AutomataMinimizationTime, 10 MinimizatonAttempts, 314 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 40.5ms SsaConstructionTime, 507.9ms SatisfiabilityAnalysisTime, 2140.4ms InterpolantComputationTime, 262 NumberOfCodeBlocks, 262 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 252 ConstructedInterpolants, 0 QuantifiedInterpolants, 914 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-13 18:45:16,287 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...