./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/parallel/min-max-1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8c2bbc92 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/parallel/min-max-1.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 43d79caaae5e4cf80b770688b693f7b8e96c4cb8 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-03 12:06:54,070 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-03 12:06:54,073 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-03 12:06:54,111 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-03 12:06:54,112 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-03 12:06:54,113 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-03 12:06:54,115 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-03 12:06:54,117 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-03 12:06:54,120 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-03 12:06:54,121 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-03 12:06:54,122 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-03 12:06:54,124 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-03 12:06:54,124 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-03 12:06:54,125 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-03 12:06:54,127 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-03 12:06:54,129 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-03 12:06:54,130 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-03 12:06:54,131 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-03 12:06:54,133 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-03 12:06:54,136 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-03 12:06:54,137 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-03 12:06:54,139 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-03 12:06:54,140 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-03 12:06:54,142 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-03 12:06:54,145 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-03 12:06:54,146 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-03 12:06:54,146 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-03 12:06:54,147 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-03 12:06:54,148 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-03 12:06:54,149 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-03 12:06:54,149 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-03 12:06:54,150 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-03 12:06:54,151 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-03 12:06:54,152 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-03 12:06:54,153 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-03 12:06:54,153 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-03 12:06:54,154 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-03 12:06:54,155 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-03 12:06:54,155 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-03 12:06:54,156 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-03 12:06:54,157 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-03 12:06:54,158 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-03 12:06:54,224 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-03 12:06:54,224 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-03 12:06:54,225 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-03 12:06:54,225 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-03 12:06:54,229 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-03 12:06:54,229 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-03 12:06:54,230 INFO L138 SettingsManager]: * Use SBE=true [2021-10-03 12:06:54,230 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-03 12:06:54,230 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-03 12:06:54,230 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-03 12:06:54,231 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-03 12:06:54,231 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-03 12:06:54,232 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-03 12:06:54,233 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-03 12:06:54,233 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-03 12:06:54,233 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-03 12:06:54,233 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-03 12:06:54,233 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-03 12:06:54,233 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-03 12:06:54,234 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-03 12:06:54,234 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-03 12:06:54,234 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-03 12:06:54,234 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-03 12:06:54,234 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-03 12:06:54,235 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-03 12:06:54,235 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-03 12:06:54,235 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-03 12:06:54,235 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-03 12:06:54,235 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-03 12:06:54,236 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-03 12:06:54,236 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 43d79caaae5e4cf80b770688b693f7b8e96c4cb8 [2021-10-03 12:06:54,699 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-03 12:06:54,744 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-03 12:06:54,749 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-03 12:06:54,751 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-03 12:06:54,752 INFO L275 PluginConnector]: CDTParser initialized [2021-10-03 12:06:54,754 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel/min-max-1.wvr.c [2021-10-03 12:06:54,842 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5c934df09/20730b9190f5466fb9369f61d1a89d01/FLAG59f506a50 [2021-10-03 12:06:55,571 INFO L306 CDTParser]: Found 1 translation units. [2021-10-03 12:06:55,572 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/parallel/min-max-1.wvr.c [2021-10-03 12:06:55,572 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-10-03 12:06:55,572 WARN L117 ultiparseSymbolTable]: System include assert.h could not be resolved by CDT -- only built-in system includes are available. [2021-10-03 12:06:55,582 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5c934df09/20730b9190f5466fb9369f61d1a89d01/FLAG59f506a50 [2021-10-03 12:06:55,904 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5c934df09/20730b9190f5466fb9369f61d1a89d01 [2021-10-03 12:06:55,911 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-03 12:06:55,918 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-03 12:06:55,925 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-03 12:06:55,925 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-03 12:06:55,929 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-03 12:06:55,930 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.10 12:06:55" (1/1) ... [2021-10-03 12:06:55,931 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3207718f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 12:06:55, skipping insertion in model container [2021-10-03 12:06:55,931 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.10 12:06:55" (1/1) ... [2021-10-03 12:06:55,940 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-03 12:06:55,958 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-03 12:06:56,073 WARN L612 FunctionHandler]: implicit declaration of function assert [2021-10-03 12:06:56,137 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/parallel/min-max-1.wvr.c[1633,1646] [2021-10-03 12:06:56,162 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-03 12:06:56,176 INFO L203 MainTranslator]: Completed pre-run [2021-10-03 12:06:56,189 WARN L612 FunctionHandler]: implicit declaration of function assert [2021-10-03 12:06:56,232 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/parallel/min-max-1.wvr.c[1633,1646] [2021-10-03 12:06:56,239 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-03 12:06:56,261 INFO L208 MainTranslator]: Completed translation [2021-10-03 12:06:56,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 12:06:56 WrapperNode [2021-10-03 12:06:56,261 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-03 12:06:56,262 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-03 12:06:56,263 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-03 12:06:56,263 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-03 12:06:56,271 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 12:06:56" (1/1) ... [2021-10-03 12:06:56,280 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 12:06:56" (1/1) ... [2021-10-03 12:06:56,309 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-03 12:06:56,310 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-03 12:06:56,310 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-03 12:06:56,310 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-03 12:06:56,320 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 12:06:56" (1/1) ... [2021-10-03 12:06:56,320 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 12:06:56" (1/1) ... [2021-10-03 12:06:56,324 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 12:06:56" (1/1) ... [2021-10-03 12:06:56,324 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 12:06:56" (1/1) ... [2021-10-03 12:06:56,335 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 12:06:56" (1/1) ... [2021-10-03 12:06:56,341 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 12:06:56" (1/1) ... [2021-10-03 12:06:56,343 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 12:06:56" (1/1) ... [2021-10-03 12:06:56,346 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-03 12:06:56,347 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-03 12:06:56,348 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-03 12:06:56,348 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-03 12:06:56,349 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 12:06:56" (1/1) ... [2021-10-03 12:06:56,367 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-03 12:06:56,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-03 12:06:56,394 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) [2021-10-03 12:06:56,405 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 [2021-10-03 12:06:56,455 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-03 12:06:56,456 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-03 12:06:56,456 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-03 12:06:56,456 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-03 12:06:56,456 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-03 12:06:56,456 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-03 12:06:56,456 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-03 12:06:56,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-03 12:06:56,456 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-03 12:06:56,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-03 12:06:56,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-03 12:06:56,457 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-03 12:06:56,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-03 12:06:56,459 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-03 12:06:56,871 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-03 12:06:56,872 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2021-10-03 12:06:56,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 12:06:56 BoogieIcfgContainer [2021-10-03 12:06:56,875 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-03 12:06:56,876 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-03 12:06:56,882 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-03 12:06:56,886 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-03 12:06:56,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.10 12:06:55" (1/3) ... [2021-10-03 12:06:56,887 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ba37202 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 12:06:56, skipping insertion in model container [2021-10-03 12:06:56,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 12:06:56" (2/3) ... [2021-10-03 12:06:56,888 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ba37202 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 12:06:56, skipping insertion in model container [2021-10-03 12:06:56,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 12:06:56" (3/3) ... [2021-10-03 12:06:56,890 INFO L111 eAbstractionObserver]: Analyzing ICFG min-max-1.wvr.c [2021-10-03 12:06:56,896 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-03 12:06:56,896 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-03 12:06:56,896 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-03 12:06:56,897 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-03 12:06:56,968 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:06:56,968 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:06:56,969 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:06:56,969 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:06:56,969 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:06:56,970 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:06:56,970 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:06:56,970 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:06:56,971 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:06:56,971 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:06:56,971 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:06:56,971 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:06:56,972 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:06:56,972 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:06:56,972 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:06:56,973 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:06:56,973 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:06:56,973 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:06:56,974 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:06:56,974 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:06:56,974 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:06:56,975 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:06:56,975 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:06:56,975 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:06:56,975 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:06:56,976 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:06:56,976 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:06:56,976 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:06:56,976 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:06:56,977 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:06:56,977 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:06:56,977 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:06:56,978 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:06:56,978 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:06:56,979 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:06:56,979 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:06:56,979 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:06:56,979 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:06:56,980 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:06:56,980 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:06:56,980 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:06:56,981 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:06:56,981 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:06:56,981 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:06:56,982 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:06:56,982 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:06:56,982 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:06:56,982 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:06:56,983 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:06:56,983 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:06:56,983 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:06:56,984 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:06:56,984 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:06:56,984 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:06:56,985 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:06:56,985 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:06:56,985 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:06:56,985 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:06:56,986 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:06:56,986 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:06:56,986 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:06:56,986 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:06:56,987 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:06:56,987 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:06:56,988 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:06:56,988 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:06:56,988 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:06:56,988 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:06:56,992 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:06:56,993 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:06:57,000 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:06:57,001 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:06:57,001 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:06:57,001 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:06:57,001 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:06:57,002 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:06:57,004 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:06:57,004 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:06:57,005 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:06:57,005 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:06:57,005 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:06:57,005 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:06:57,016 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-10-03 12:06:57,066 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-03 12:06:57,074 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 [2021-10-03 12:06:57,075 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-03 12:06:57,096 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-03 12:06:57,110 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 167 places, 170 transitions, 364 flow [2021-10-03 12:06:57,114 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 167 places, 170 transitions, 364 flow [2021-10-03 12:06:57,116 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 167 places, 170 transitions, 364 flow [2021-10-03 12:06:57,226 INFO L129 PetriNetUnfolder]: 13/167 cut-off events. [2021-10-03 12:06:57,227 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-03 12:06:57,233 INFO L84 FinitePrefix]: Finished finitePrefix Result has 180 conditions, 167 events. 13/167 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 170 event pairs, 0 based on Foata normal form. 0/153 useless extension candidates. Maximal degree in co-relation 141. Up to 2 conditions per place. [2021-10-03 12:06:57,238 INFO L116 LiptonReduction]: Number of co-enabled transitions 2174 [2021-10-03 12:07:03,328 INFO L131 LiptonReduction]: Checked pairs total: 5064 [2021-10-03 12:07:03,328 INFO L133 LiptonReduction]: Total number of compositions: 164 [2021-10-03 12:07:03,338 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 42 places, 37 transitions, 98 flow [2021-10-03 12:07:03,387 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 389 states, 388 states have (on average 3.1391752577319587) internal successors, (1218), 388 states have internal predecessors, (1218), 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) [2021-10-03 12:07:03,397 INFO L276 IsEmpty]: Start isEmpty. Operand has 389 states, 388 states have (on average 3.1391752577319587) internal successors, (1218), 388 states have internal predecessors, (1218), 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) [2021-10-03 12:07:03,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-03 12:07:03,432 INFO L504 BasicCegarLoop]: Found error trace [2021-10-03 12:07:03,435 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] [2021-10-03 12:07:03,435 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-03 12:07:03,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-03 12:07:03,443 INFO L82 PathProgramCache]: Analyzing trace with hash -2063537881, now seen corresponding path program 1 times [2021-10-03 12:07:03,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-03 12:07:03,455 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574554849] [2021-10-03 12:07:03,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-03 12:07:03,457 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-03 12:07:03,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-03 12:07:04,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-03 12:07:04,061 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-03 12:07:04,061 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574554849] [2021-10-03 12:07:04,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574554849] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-03 12:07:04,062 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-03 12:07:04,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-03 12:07:04,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722557034] [2021-10-03 12:07:04,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-03 12:07:04,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-03 12:07:04,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-03 12:07:04,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-03 12:07:04,091 INFO L87 Difference]: Start difference. First operand has 389 states, 388 states have (on average 3.1391752577319587) internal successors, (1218), 388 states have internal predecessors, (1218), 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 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 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) [2021-10-03 12:07:05,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-03 12:07:05,198 INFO L93 Difference]: Finished difference Result 1135 states and 3429 transitions. [2021-10-03 12:07:05,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-03 12:07:05,201 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 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 23 [2021-10-03 12:07:05,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-03 12:07:05,227 INFO L225 Difference]: With dead ends: 1135 [2021-10-03 12:07:05,227 INFO L226 Difference]: Without dead ends: 849 [2021-10-03 12:07:05,229 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 403.4ms TimeCoverageRelationStatistics Valid=254, Invalid=676, Unknown=0, NotChecked=0, Total=930 [2021-10-03 12:07:05,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2021-10-03 12:07:05,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 471. [2021-10-03 12:07:05,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 470 states have (on average 3.1212765957446806) internal successors, (1467), 470 states have internal predecessors, (1467), 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) [2021-10-03 12:07:05,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 1467 transitions. [2021-10-03 12:07:05,337 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 1467 transitions. Word has length 23 [2021-10-03 12:07:05,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-03 12:07:05,338 INFO L470 AbstractCegarLoop]: Abstraction has 471 states and 1467 transitions. [2021-10-03 12:07:05,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 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) [2021-10-03 12:07:05,339 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 1467 transitions. [2021-10-03 12:07:05,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-03 12:07:05,349 INFO L504 BasicCegarLoop]: Found error trace [2021-10-03 12:07:05,349 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] [2021-10-03 12:07:05,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-03 12:07:05,350 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-03 12:07:05,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-03 12:07:05,351 INFO L82 PathProgramCache]: Analyzing trace with hash -1961244269, now seen corresponding path program 2 times [2021-10-03 12:07:05,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-03 12:07:05,351 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461205063] [2021-10-03 12:07:05,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-03 12:07:05,352 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-03 12:07:05,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-03 12:07:05,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-03 12:07:05,617 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-03 12:07:05,618 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461205063] [2021-10-03 12:07:05,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461205063] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-03 12:07:05,619 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-03 12:07:05,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-03 12:07:05,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209851525] [2021-10-03 12:07:05,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-03 12:07:05,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-03 12:07:05,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-03 12:07:05,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-03 12:07:05,625 INFO L87 Difference]: Start difference. First operand 471 states and 1467 transitions. Second operand has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 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) [2021-10-03 12:07:06,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-03 12:07:06,316 INFO L93 Difference]: Finished difference Result 1468 states and 4509 transitions. [2021-10-03 12:07:06,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-03 12:07:06,317 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 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 23 [2021-10-03 12:07:06,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-03 12:07:06,329 INFO L225 Difference]: With dead ends: 1468 [2021-10-03 12:07:06,329 INFO L226 Difference]: Without dead ends: 1181 [2021-10-03 12:07:06,330 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 233.6ms TimeCoverageRelationStatistics Valid=203, Invalid=553, Unknown=0, NotChecked=0, Total=756 [2021-10-03 12:07:06,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1181 states. [2021-10-03 12:07:06,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1181 to 569. [2021-10-03 12:07:06,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 568 states have (on average 3.1232394366197185) internal successors, (1774), 568 states have internal predecessors, (1774), 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) [2021-10-03 12:07:06,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 1774 transitions. [2021-10-03 12:07:06,400 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 1774 transitions. Word has length 23 [2021-10-03 12:07:06,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-03 12:07:06,401 INFO L470 AbstractCegarLoop]: Abstraction has 569 states and 1774 transitions. [2021-10-03 12:07:06,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 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) [2021-10-03 12:07:06,401 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 1774 transitions. [2021-10-03 12:07:06,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-03 12:07:06,404 INFO L504 BasicCegarLoop]: Found error trace [2021-10-03 12:07:06,405 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] [2021-10-03 12:07:06,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-03 12:07:06,405 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-03 12:07:06,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-03 12:07:06,406 INFO L82 PathProgramCache]: Analyzing trace with hash 1163267925, now seen corresponding path program 3 times [2021-10-03 12:07:06,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-03 12:07:06,407 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881903707] [2021-10-03 12:07:06,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-03 12:07:06,407 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-03 12:07:06,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-03 12:07:06,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-03 12:07:06,591 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-03 12:07:06,592 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881903707] [2021-10-03 12:07:06,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881903707] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-03 12:07:06,592 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-03 12:07:06,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-03 12:07:06,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050066669] [2021-10-03 12:07:06,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-03 12:07:06,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-03 12:07:06,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-03 12:07:06,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-10-03 12:07:06,595 INFO L87 Difference]: Start difference. First operand 569 states and 1774 transitions. Second operand has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 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) [2021-10-03 12:07:06,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-03 12:07:06,798 INFO L93 Difference]: Finished difference Result 787 states and 2406 transitions. [2021-10-03 12:07:06,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-03 12:07:06,798 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 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 23 [2021-10-03 12:07:06,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-03 12:07:06,805 INFO L225 Difference]: With dead ends: 787 [2021-10-03 12:07:06,805 INFO L226 Difference]: Without dead ends: 662 [2021-10-03 12:07:06,806 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 86.6ms TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2021-10-03 12:07:06,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2021-10-03 12:07:06,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 662. [2021-10-03 12:07:06,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 661 states have (on average 3.075642965204236) internal successors, (2033), 661 states have internal predecessors, (2033), 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) [2021-10-03 12:07:06,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 2033 transitions. [2021-10-03 12:07:06,845 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 2033 transitions. Word has length 23 [2021-10-03 12:07:06,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-03 12:07:06,846 INFO L470 AbstractCegarLoop]: Abstraction has 662 states and 2033 transitions. [2021-10-03 12:07:06,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 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) [2021-10-03 12:07:06,846 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 2033 transitions. [2021-10-03 12:07:06,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-03 12:07:06,849 INFO L504 BasicCegarLoop]: Found error trace [2021-10-03 12:07:06,850 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] [2021-10-03 12:07:06,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-03 12:07:06,850 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-03 12:07:06,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-03 12:07:06,851 INFO L82 PathProgramCache]: Analyzing trace with hash -478551193, now seen corresponding path program 4 times [2021-10-03 12:07:06,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-03 12:07:06,852 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600666419] [2021-10-03 12:07:06,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-03 12:07:06,852 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-03 12:07:06,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-03 12:07:06,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-03 12:07:06,980 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-03 12:07:06,980 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600666419] [2021-10-03 12:07:06,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600666419] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-03 12:07:06,980 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-03 12:07:06,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-03 12:07:06,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034870125] [2021-10-03 12:07:06,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-03 12:07:06,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-03 12:07:06,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-03 12:07:06,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-03 12:07:06,982 INFO L87 Difference]: Start difference. First operand 662 states and 2033 transitions. Second operand has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 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) [2021-10-03 12:07:07,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-03 12:07:07,045 INFO L93 Difference]: Finished difference Result 737 states and 2238 transitions. [2021-10-03 12:07:07,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-03 12:07:07,046 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 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 23 [2021-10-03 12:07:07,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-03 12:07:07,052 INFO L225 Difference]: With dead ends: 737 [2021-10-03 12:07:07,052 INFO L226 Difference]: Without dead ends: 616 [2021-10-03 12:07:07,052 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 21.6ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-03 12:07:07,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2021-10-03 12:07:07,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 523. [2021-10-03 12:07:07,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 523 states, 522 states have (on average 3.0306513409961684) internal successors, (1582), 522 states have internal predecessors, (1582), 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) [2021-10-03 12:07:07,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 1582 transitions. [2021-10-03 12:07:07,076 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 1582 transitions. Word has length 23 [2021-10-03 12:07:07,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-03 12:07:07,076 INFO L470 AbstractCegarLoop]: Abstraction has 523 states and 1582 transitions. [2021-10-03 12:07:07,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 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) [2021-10-03 12:07:07,077 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 1582 transitions. [2021-10-03 12:07:07,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-03 12:07:07,079 INFO L504 BasicCegarLoop]: Found error trace [2021-10-03 12:07:07,080 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] [2021-10-03 12:07:07,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-03 12:07:07,080 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-03 12:07:07,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-03 12:07:07,081 INFO L82 PathProgramCache]: Analyzing trace with hash -376257581, now seen corresponding path program 5 times [2021-10-03 12:07:07,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-03 12:07:07,081 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780228664] [2021-10-03 12:07:07,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-03 12:07:07,082 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-03 12:07:07,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-03 12:07:07,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-03 12:07:07,245 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-03 12:07:07,246 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780228664] [2021-10-03 12:07:07,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780228664] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-03 12:07:07,246 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-03 12:07:07,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-03 12:07:07,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455351303] [2021-10-03 12:07:07,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-03 12:07:07,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-03 12:07:07,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-03 12:07:07,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-03 12:07:07,248 INFO L87 Difference]: Start difference. First operand 523 states and 1582 transitions. Second operand has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 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) [2021-10-03 12:07:07,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-03 12:07:07,780 INFO L93 Difference]: Finished difference Result 1017 states and 3092 transitions. [2021-10-03 12:07:07,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-03 12:07:07,781 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 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 23 [2021-10-03 12:07:07,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-03 12:07:07,789 INFO L225 Difference]: With dead ends: 1017 [2021-10-03 12:07:07,790 INFO L226 Difference]: Without dead ends: 841 [2021-10-03 12:07:07,791 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 256.4ms TimeCoverageRelationStatistics Valid=183, Invalid=467, Unknown=0, NotChecked=0, Total=650 [2021-10-03 12:07:07,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 841 states. [2021-10-03 12:07:07,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 841 to 517. [2021-10-03 12:07:07,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 517 states, 516 states have (on average 3.0348837209302326) internal successors, (1566), 516 states have internal predecessors, (1566), 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) [2021-10-03 12:07:07,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 1566 transitions. [2021-10-03 12:07:07,818 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 1566 transitions. Word has length 23 [2021-10-03 12:07:07,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-03 12:07:07,818 INFO L470 AbstractCegarLoop]: Abstraction has 517 states and 1566 transitions. [2021-10-03 12:07:07,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 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) [2021-10-03 12:07:07,819 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 1566 transitions. [2021-10-03 12:07:07,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-03 12:07:07,821 INFO L504 BasicCegarLoop]: Found error trace [2021-10-03 12:07:07,821 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] [2021-10-03 12:07:07,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-03 12:07:07,822 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-03 12:07:07,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-03 12:07:07,823 INFO L82 PathProgramCache]: Analyzing trace with hash -1549676819, now seen corresponding path program 6 times [2021-10-03 12:07:07,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-03 12:07:07,824 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972477287] [2021-10-03 12:07:07,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-03 12:07:07,824 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-03 12:07:07,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-03 12:07:07,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-03 12:07:07,973 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-03 12:07:07,973 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972477287] [2021-10-03 12:07:07,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972477287] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-03 12:07:07,973 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-03 12:07:07,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-03 12:07:07,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729839593] [2021-10-03 12:07:07,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-03 12:07:07,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-03 12:07:07,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-03 12:07:07,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-03 12:07:07,975 INFO L87 Difference]: Start difference. First operand 517 states and 1566 transitions. Second operand has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 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) [2021-10-03 12:07:08,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-03 12:07:08,453 INFO L93 Difference]: Finished difference Result 913 states and 2777 transitions. [2021-10-03 12:07:08,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-03 12:07:08,454 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 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 23 [2021-10-03 12:07:08,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-03 12:07:08,461 INFO L225 Difference]: With dead ends: 913 [2021-10-03 12:07:08,461 INFO L226 Difference]: Without dead ends: 771 [2021-10-03 12:07:08,462 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 201.3ms TimeCoverageRelationStatistics Valid=164, Invalid=486, Unknown=0, NotChecked=0, Total=650 [2021-10-03 12:07:08,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 771 states. [2021-10-03 12:07:08,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 771 to 524. [2021-10-03 12:07:08,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 523 states have (on average 3.0305927342256216) internal successors, (1585), 523 states have internal predecessors, (1585), 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) [2021-10-03 12:07:08,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 1585 transitions. [2021-10-03 12:07:08,489 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 1585 transitions. Word has length 23 [2021-10-03 12:07:08,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-03 12:07:08,489 INFO L470 AbstractCegarLoop]: Abstraction has 524 states and 1585 transitions. [2021-10-03 12:07:08,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 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) [2021-10-03 12:07:08,490 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 1585 transitions. [2021-10-03 12:07:08,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-03 12:07:08,493 INFO L504 BasicCegarLoop]: Found error trace [2021-10-03 12:07:08,493 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] [2021-10-03 12:07:08,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-03 12:07:08,493 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-03 12:07:08,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-03 12:07:08,494 INFO L82 PathProgramCache]: Analyzing trace with hash 1122514689, now seen corresponding path program 7 times [2021-10-03 12:07:08,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-03 12:07:08,494 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832583253] [2021-10-03 12:07:08,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-03 12:07:08,495 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-03 12:07:08,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-03 12:07:08,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-03 12:07:08,630 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-03 12:07:08,631 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832583253] [2021-10-03 12:07:08,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832583253] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-03 12:07:08,631 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-03 12:07:08,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-03 12:07:08,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238299802] [2021-10-03 12:07:08,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-03 12:07:08,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-03 12:07:08,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-03 12:07:08,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-03 12:07:08,633 INFO L87 Difference]: Start difference. First operand 524 states and 1585 transitions. Second operand has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 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) [2021-10-03 12:07:09,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-03 12:07:09,143 INFO L93 Difference]: Finished difference Result 1018 states and 3084 transitions. [2021-10-03 12:07:09,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-03 12:07:09,143 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 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 23 [2021-10-03 12:07:09,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-03 12:07:09,151 INFO L225 Difference]: With dead ends: 1018 [2021-10-03 12:07:09,151 INFO L226 Difference]: Without dead ends: 876 [2021-10-03 12:07:09,152 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 234.0ms TimeCoverageRelationStatistics Valid=197, Invalid=559, Unknown=0, NotChecked=0, Total=756 [2021-10-03 12:07:09,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2021-10-03 12:07:09,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 544. [2021-10-03 12:07:09,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 543 states have (on average 3.042357274401473) internal successors, (1652), 543 states have internal predecessors, (1652), 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) [2021-10-03 12:07:09,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 1652 transitions. [2021-10-03 12:07:09,178 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 1652 transitions. Word has length 23 [2021-10-03 12:07:09,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-03 12:07:09,179 INFO L470 AbstractCegarLoop]: Abstraction has 544 states and 1652 transitions. [2021-10-03 12:07:09,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 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) [2021-10-03 12:07:09,179 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 1652 transitions. [2021-10-03 12:07:09,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-03 12:07:09,182 INFO L504 BasicCegarLoop]: Found error trace [2021-10-03 12:07:09,182 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] [2021-10-03 12:07:09,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-03 12:07:09,182 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-03 12:07:09,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-03 12:07:09,183 INFO L82 PathProgramCache]: Analyzing trace with hash -96568217, now seen corresponding path program 8 times [2021-10-03 12:07:09,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-03 12:07:09,183 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346791188] [2021-10-03 12:07:09,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-03 12:07:09,184 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-03 12:07:09,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-03 12:07:09,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-03 12:07:09,308 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-03 12:07:09,308 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346791188] [2021-10-03 12:07:09,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346791188] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-03 12:07:09,309 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-03 12:07:09,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-03 12:07:09,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820810764] [2021-10-03 12:07:09,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-03 12:07:09,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-03 12:07:09,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-03 12:07:09,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-10-03 12:07:09,311 INFO L87 Difference]: Start difference. First operand 544 states and 1652 transitions. Second operand has 9 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 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) [2021-10-03 12:07:09,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-03 12:07:09,538 INFO L93 Difference]: Finished difference Result 697 states and 2104 transitions. [2021-10-03 12:07:09,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-03 12:07:09,538 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 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 23 [2021-10-03 12:07:09,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-03 12:07:09,544 INFO L225 Difference]: With dead ends: 697 [2021-10-03 12:07:09,544 INFO L226 Difference]: Without dead ends: 606 [2021-10-03 12:07:09,545 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 108.4ms TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2021-10-03 12:07:09,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2021-10-03 12:07:09,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 606. [2021-10-03 12:07:09,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 606 states, 605 states have (on average 3.0264462809917356) internal successors, (1831), 605 states have internal predecessors, (1831), 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) [2021-10-03 12:07:09,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 1831 transitions. [2021-10-03 12:07:09,570 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 1831 transitions. Word has length 23 [2021-10-03 12:07:09,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-03 12:07:09,571 INFO L470 AbstractCegarLoop]: Abstraction has 606 states and 1831 transitions. [2021-10-03 12:07:09,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 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) [2021-10-03 12:07:09,571 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 1831 transitions. [2021-10-03 12:07:09,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-03 12:07:09,576 INFO L504 BasicCegarLoop]: Found error trace [2021-10-03 12:07:09,576 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] [2021-10-03 12:07:09,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-03 12:07:09,577 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-03 12:07:09,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-03 12:07:09,578 INFO L82 PathProgramCache]: Analyzing trace with hash -1205560577, now seen corresponding path program 9 times [2021-10-03 12:07:09,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-03 12:07:09,584 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633258989] [2021-10-03 12:07:09,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-03 12:07:09,584 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-03 12:07:09,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-03 12:07:09,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-03 12:07:09,799 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-03 12:07:09,799 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633258989] [2021-10-03 12:07:09,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633258989] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-03 12:07:09,800 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-03 12:07:09,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-03 12:07:09,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863166092] [2021-10-03 12:07:09,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-03 12:07:09,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-03 12:07:09,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-03 12:07:09,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-03 12:07:09,802 INFO L87 Difference]: Start difference. First operand 606 states and 1831 transitions. Second operand has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 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) [2021-10-03 12:07:10,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-03 12:07:10,240 INFO L93 Difference]: Finished difference Result 999 states and 3026 transitions. [2021-10-03 12:07:10,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-03 12:07:10,241 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 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 23 [2021-10-03 12:07:10,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-03 12:07:10,258 INFO L225 Difference]: With dead ends: 999 [2021-10-03 12:07:10,259 INFO L226 Difference]: Without dead ends: 874 [2021-10-03 12:07:10,259 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 222.8ms TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2021-10-03 12:07:10,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 874 states. [2021-10-03 12:07:10,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 874 to 609. [2021-10-03 12:07:10,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 609 states, 608 states have (on average 3.0246710526315788) internal successors, (1839), 608 states have internal predecessors, (1839), 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) [2021-10-03 12:07:10,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 1839 transitions. [2021-10-03 12:07:10,286 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 1839 transitions. Word has length 23 [2021-10-03 12:07:10,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-03 12:07:10,287 INFO L470 AbstractCegarLoop]: Abstraction has 609 states and 1839 transitions. [2021-10-03 12:07:10,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 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) [2021-10-03 12:07:10,287 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 1839 transitions. [2021-10-03 12:07:10,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-03 12:07:10,290 INFO L504 BasicCegarLoop]: Found error trace [2021-10-03 12:07:10,290 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] [2021-10-03 12:07:10,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-03 12:07:10,291 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-03 12:07:10,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-03 12:07:10,291 INFO L82 PathProgramCache]: Analyzing trace with hash -1135740909, now seen corresponding path program 10 times [2021-10-03 12:07:10,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-03 12:07:10,292 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061715013] [2021-10-03 12:07:10,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-03 12:07:10,293 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-03 12:07:10,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-03 12:07:10,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-03 12:07:10,435 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-03 12:07:10,436 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061715013] [2021-10-03 12:07:10,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061715013] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-03 12:07:10,436 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-03 12:07:10,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-03 12:07:10,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173258621] [2021-10-03 12:07:10,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-03 12:07:10,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-03 12:07:10,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-03 12:07:10,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-03 12:07:10,439 INFO L87 Difference]: Start difference. First operand 609 states and 1839 transitions. Second operand has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 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) [2021-10-03 12:07:10,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-03 12:07:10,876 INFO L93 Difference]: Finished difference Result 1036 states and 3132 transitions. [2021-10-03 12:07:10,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-03 12:07:10,877 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 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 23 [2021-10-03 12:07:10,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-03 12:07:10,886 INFO L225 Difference]: With dead ends: 1036 [2021-10-03 12:07:10,886 INFO L226 Difference]: Without dead ends: 911 [2021-10-03 12:07:10,887 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 203.3ms TimeCoverageRelationStatistics Valid=142, Invalid=364, Unknown=0, NotChecked=0, Total=506 [2021-10-03 12:07:10,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 911 states. [2021-10-03 12:07:10,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 911 to 603. [2021-10-03 12:07:10,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 602 states have (on average 3.028239202657807) internal successors, (1823), 602 states have internal predecessors, (1823), 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) [2021-10-03 12:07:10,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 1823 transitions. [2021-10-03 12:07:10,921 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 1823 transitions. Word has length 23 [2021-10-03 12:07:10,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-03 12:07:10,922 INFO L470 AbstractCegarLoop]: Abstraction has 603 states and 1823 transitions. [2021-10-03 12:07:10,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 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) [2021-10-03 12:07:10,922 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 1823 transitions. [2021-10-03 12:07:10,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-03 12:07:10,925 INFO L504 BasicCegarLoop]: Found error trace [2021-10-03 12:07:10,925 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] [2021-10-03 12:07:10,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-03 12:07:10,926 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-03 12:07:10,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-03 12:07:10,926 INFO L82 PathProgramCache]: Analyzing trace with hash -628598233, now seen corresponding path program 11 times [2021-10-03 12:07:10,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-03 12:07:10,927 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82772250] [2021-10-03 12:07:10,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-03 12:07:10,927 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-03 12:07:10,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-03 12:07:11,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-03 12:07:11,051 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-03 12:07:11,051 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82772250] [2021-10-03 12:07:11,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82772250] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-03 12:07:11,052 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-03 12:07:11,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-03 12:07:11,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154017363] [2021-10-03 12:07:11,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-03 12:07:11,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-03 12:07:11,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-03 12:07:11,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-10-03 12:07:11,054 INFO L87 Difference]: Start difference. First operand 603 states and 1823 transitions. Second operand has 9 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 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) [2021-10-03 12:07:11,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-03 12:07:11,338 INFO L93 Difference]: Finished difference Result 718 states and 2158 transitions. [2021-10-03 12:07:11,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-03 12:07:11,339 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 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 23 [2021-10-03 12:07:11,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-03 12:07:11,345 INFO L225 Difference]: With dead ends: 718 [2021-10-03 12:07:11,345 INFO L226 Difference]: Without dead ends: 627 [2021-10-03 12:07:11,346 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 117.4ms TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2021-10-03 12:07:11,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2021-10-03 12:07:11,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 573. [2021-10-03 12:07:11,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 572 states have (on average 3.027972027972028) internal successors, (1732), 572 states have internal predecessors, (1732), 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) [2021-10-03 12:07:11,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 1732 transitions. [2021-10-03 12:07:11,369 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 1732 transitions. Word has length 23 [2021-10-03 12:07:11,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-03 12:07:11,370 INFO L470 AbstractCegarLoop]: Abstraction has 573 states and 1732 transitions. [2021-10-03 12:07:11,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 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) [2021-10-03 12:07:11,370 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 1732 transitions. [2021-10-03 12:07:11,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-03 12:07:11,373 INFO L504 BasicCegarLoop]: Found error trace [2021-10-03 12:07:11,373 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] [2021-10-03 12:07:11,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-03 12:07:11,374 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-03 12:07:11,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-03 12:07:11,374 INFO L82 PathProgramCache]: Analyzing trace with hash -163681129, now seen corresponding path program 12 times [2021-10-03 12:07:11,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-03 12:07:11,375 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169572160] [2021-10-03 12:07:11,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-03 12:07:11,375 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-03 12:07:11,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-03 12:07:11,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-03 12:07:11,482 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-03 12:07:11,483 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169572160] [2021-10-03 12:07:11,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169572160] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-03 12:07:11,483 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-03 12:07:11,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-03 12:07:11,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294055646] [2021-10-03 12:07:11,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-03 12:07:11,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-03 12:07:11,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-03 12:07:11,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-10-03 12:07:11,486 INFO L87 Difference]: Start difference. First operand 573 states and 1732 transitions. Second operand has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 8 states have internal predecessors, (23), 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) [2021-10-03 12:07:11,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-03 12:07:11,733 INFO L93 Difference]: Finished difference Result 917 states and 2770 transitions. [2021-10-03 12:07:11,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-03 12:07:11,734 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 8 states have internal predecessors, (23), 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 23 [2021-10-03 12:07:11,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-03 12:07:11,741 INFO L225 Difference]: With dead ends: 917 [2021-10-03 12:07:11,742 INFO L226 Difference]: Without dead ends: 791 [2021-10-03 12:07:11,742 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 70.5ms TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-10-03 12:07:11,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 791 states. [2021-10-03 12:07:11,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 791 to 578. [2021-10-03 12:07:11,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 578 states, 577 states have (on average 3.024263431542461) internal successors, (1745), 577 states have internal predecessors, (1745), 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) [2021-10-03 12:07:11,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 1745 transitions. [2021-10-03 12:07:11,767 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 1745 transitions. Word has length 23 [2021-10-03 12:07:11,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-03 12:07:11,768 INFO L470 AbstractCegarLoop]: Abstraction has 578 states and 1745 transitions. [2021-10-03 12:07:11,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 8 states have internal predecessors, (23), 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) [2021-10-03 12:07:11,768 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 1745 transitions. [2021-10-03 12:07:11,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-03 12:07:11,771 INFO L504 BasicCegarLoop]: Found error trace [2021-10-03 12:07:11,771 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] [2021-10-03 12:07:11,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-03 12:07:11,772 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-03 12:07:11,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-03 12:07:11,772 INFO L82 PathProgramCache]: Analyzing trace with hash -1786456917, now seen corresponding path program 13 times [2021-10-03 12:07:11,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-03 12:07:11,773 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244527376] [2021-10-03 12:07:11,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-03 12:07:11,773 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-03 12:07:11,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-03 12:07:11,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-03 12:07:11,868 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-03 12:07:11,868 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244527376] [2021-10-03 12:07:11,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244527376] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-03 12:07:11,868 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-03 12:07:11,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-03 12:07:11,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848053346] [2021-10-03 12:07:11,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-03 12:07:11,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-03 12:07:11,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-03 12:07:11,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-10-03 12:07:11,871 INFO L87 Difference]: Start difference. First operand 578 states and 1745 transitions. Second operand has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 8 states have internal predecessors, (23), 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) [2021-10-03 12:07:12,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-03 12:07:12,110 INFO L93 Difference]: Finished difference Result 918 states and 2778 transitions. [2021-10-03 12:07:12,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-03 12:07:12,111 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 8 states have internal predecessors, (23), 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 23 [2021-10-03 12:07:12,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-03 12:07:12,117 INFO L225 Difference]: With dead ends: 918 [2021-10-03 12:07:12,118 INFO L226 Difference]: Without dead ends: 792 [2021-10-03 12:07:12,118 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 66.4ms TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2021-10-03 12:07:12,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 792 states. [2021-10-03 12:07:12,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 792 to 574. [2021-10-03 12:07:12,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 573 states have (on average 3.026178010471204) internal successors, (1734), 573 states have internal predecessors, (1734), 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) [2021-10-03 12:07:12,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 1734 transitions. [2021-10-03 12:07:12,143 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 1734 transitions. Word has length 23 [2021-10-03 12:07:12,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-03 12:07:12,143 INFO L470 AbstractCegarLoop]: Abstraction has 574 states and 1734 transitions. [2021-10-03 12:07:12,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 8 states have internal predecessors, (23), 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) [2021-10-03 12:07:12,144 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 1734 transitions. [2021-10-03 12:07:12,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-03 12:07:12,146 INFO L504 BasicCegarLoop]: Found error trace [2021-10-03 12:07:12,146 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] [2021-10-03 12:07:12,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-03 12:07:12,147 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-03 12:07:12,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-03 12:07:12,148 INFO L82 PathProgramCache]: Analyzing trace with hash -328932333, now seen corresponding path program 14 times [2021-10-03 12:07:12,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-03 12:07:12,148 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725507062] [2021-10-03 12:07:12,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-03 12:07:12,149 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-03 12:07:12,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-03 12:07:12,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-03 12:07:12,260 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-03 12:07:12,261 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725507062] [2021-10-03 12:07:12,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725507062] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-03 12:07:12,261 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-03 12:07:12,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-03 12:07:12,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91386550] [2021-10-03 12:07:12,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-03 12:07:12,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-03 12:07:12,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-03 12:07:12,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-10-03 12:07:12,263 INFO L87 Difference]: Start difference. First operand 574 states and 1734 transitions. Second operand has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 8 states have internal predecessors, (23), 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) [2021-10-03 12:07:12,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-03 12:07:12,644 INFO L93 Difference]: Finished difference Result 1389 states and 4242 transitions. [2021-10-03 12:07:12,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-03 12:07:12,646 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 8 states have internal predecessors, (23), 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 23 [2021-10-03 12:07:12,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-03 12:07:12,655 INFO L225 Difference]: With dead ends: 1389 [2021-10-03 12:07:12,656 INFO L226 Difference]: Without dead ends: 1146 [2021-10-03 12:07:12,656 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 108.8ms TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2021-10-03 12:07:12,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1146 states. [2021-10-03 12:07:12,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1146 to 583. [2021-10-03 12:07:12,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 582 states have (on average 3.020618556701031) internal successors, (1758), 582 states have internal predecessors, (1758), 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) [2021-10-03 12:07:12,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 1758 transitions. [2021-10-03 12:07:12,682 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 1758 transitions. Word has length 23 [2021-10-03 12:07:12,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-03 12:07:12,682 INFO L470 AbstractCegarLoop]: Abstraction has 583 states and 1758 transitions. [2021-10-03 12:07:12,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 8 states have internal predecessors, (23), 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) [2021-10-03 12:07:12,683 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 1758 transitions. [2021-10-03 12:07:12,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-03 12:07:12,685 INFO L504 BasicCegarLoop]: Found error trace [2021-10-03 12:07:12,686 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] [2021-10-03 12:07:12,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-03 12:07:12,686 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-03 12:07:12,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-03 12:07:12,687 INFO L82 PathProgramCache]: Analyzing trace with hash -1649350637, now seen corresponding path program 15 times [2021-10-03 12:07:12,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-03 12:07:12,687 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284747044] [2021-10-03 12:07:12,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-03 12:07:12,688 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-03 12:07:12,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-03 12:07:12,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-03 12:07:12,825 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-03 12:07:12,825 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284747044] [2021-10-03 12:07:12,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284747044] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-03 12:07:12,826 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-03 12:07:12,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-03 12:07:12,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347934272] [2021-10-03 12:07:12,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-03 12:07:12,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-03 12:07:12,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-03 12:07:12,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-03 12:07:12,828 INFO L87 Difference]: Start difference. First operand 583 states and 1758 transitions. Second operand has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 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) [2021-10-03 12:07:13,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-03 12:07:13,263 INFO L93 Difference]: Finished difference Result 1175 states and 3588 transitions. [2021-10-03 12:07:13,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-03 12:07:13,264 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 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 23 [2021-10-03 12:07:13,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-03 12:07:13,272 INFO L225 Difference]: With dead ends: 1175 [2021-10-03 12:07:13,273 INFO L226 Difference]: Without dead ends: 999 [2021-10-03 12:07:13,273 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 179.3ms TimeCoverageRelationStatistics Valid=141, Invalid=365, Unknown=0, NotChecked=0, Total=506 [2021-10-03 12:07:13,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 999 states. [2021-10-03 12:07:13,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 999 to 568. [2021-10-03 12:07:13,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 567 states have (on average 3.0246913580246915) internal successors, (1715), 567 states have internal predecessors, (1715), 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) [2021-10-03 12:07:13,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 1715 transitions. [2021-10-03 12:07:13,297 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 1715 transitions. Word has length 23 [2021-10-03 12:07:13,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-03 12:07:13,298 INFO L470 AbstractCegarLoop]: Abstraction has 568 states and 1715 transitions. [2021-10-03 12:07:13,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 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) [2021-10-03 12:07:13,298 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 1715 transitions. [2021-10-03 12:07:13,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-03 12:07:13,301 INFO L504 BasicCegarLoop]: Found error trace [2021-10-03 12:07:13,301 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] [2021-10-03 12:07:13,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-10-03 12:07:13,301 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-03 12:07:13,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-03 12:07:13,302 INFO L82 PathProgramCache]: Analyzing trace with hash 1390560169, now seen corresponding path program 16 times [2021-10-03 12:07:13,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-03 12:07:13,302 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594469760] [2021-10-03 12:07:13,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-03 12:07:13,303 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-03 12:07:13,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-03 12:07:13,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-03 12:07:13,415 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-03 12:07:13,416 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594469760] [2021-10-03 12:07:13,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594469760] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-03 12:07:13,416 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-03 12:07:13,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-03 12:07:13,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665328811] [2021-10-03 12:07:13,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-03 12:07:13,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-03 12:07:13,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-03 12:07:13,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-03 12:07:13,418 INFO L87 Difference]: Start difference. First operand 568 states and 1715 transitions. Second operand has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 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) [2021-10-03 12:07:13,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-03 12:07:13,750 INFO L93 Difference]: Finished difference Result 959 states and 2905 transitions. [2021-10-03 12:07:13,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-03 12:07:13,751 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 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 23 [2021-10-03 12:07:13,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-03 12:07:13,760 INFO L225 Difference]: With dead ends: 959 [2021-10-03 12:07:13,761 INFO L226 Difference]: Without dead ends: 834 [2021-10-03 12:07:13,761 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 139.5ms TimeCoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2021-10-03 12:07:13,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2021-10-03 12:07:13,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 565. [2021-10-03 12:07:13,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 564 states have (on average 3.026595744680851) internal successors, (1707), 564 states have internal predecessors, (1707), 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) [2021-10-03 12:07:13,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 1707 transitions. [2021-10-03 12:07:13,783 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 1707 transitions. Word has length 23 [2021-10-03 12:07:13,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-03 12:07:13,784 INFO L470 AbstractCegarLoop]: Abstraction has 565 states and 1707 transitions. [2021-10-03 12:07:13,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 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) [2021-10-03 12:07:13,785 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 1707 transitions. [2021-10-03 12:07:13,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-03 12:07:13,787 INFO L504 BasicCegarLoop]: Found error trace [2021-10-03 12:07:13,787 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] [2021-10-03 12:07:13,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-10-03 12:07:13,788 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-03 12:07:13,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-03 12:07:13,789 INFO L82 PathProgramCache]: Analyzing trace with hash 1460379837, now seen corresponding path program 17 times [2021-10-03 12:07:13,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-03 12:07:13,789 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526291965] [2021-10-03 12:07:13,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-03 12:07:13,789 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-03 12:07:13,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-03 12:07:13,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-03 12:07:13,930 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-03 12:07:13,930 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526291965] [2021-10-03 12:07:13,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526291965] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-03 12:07:13,931 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-03 12:07:13,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-03 12:07:13,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345630642] [2021-10-03 12:07:13,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-03 12:07:13,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-03 12:07:13,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-03 12:07:13,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-03 12:07:13,933 INFO L87 Difference]: Start difference. First operand 565 states and 1707 transitions. Second operand has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 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) [2021-10-03 12:07:14,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-03 12:07:14,296 INFO L93 Difference]: Finished difference Result 954 states and 2897 transitions. [2021-10-03 12:07:14,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-03 12:07:14,297 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 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 23 [2021-10-03 12:07:14,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-03 12:07:14,302 INFO L225 Difference]: With dead ends: 954 [2021-10-03 12:07:14,302 INFO L226 Difference]: Without dead ends: 829 [2021-10-03 12:07:14,303 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 159.1ms TimeCoverageRelationStatistics Valid=120, Invalid=342, Unknown=0, NotChecked=0, Total=462 [2021-10-03 12:07:14,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2021-10-03 12:07:14,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 541. [2021-10-03 12:07:14,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 540 states have (on average 3.037037037037037) internal successors, (1640), 540 states have internal predecessors, (1640), 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) [2021-10-03 12:07:14,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 1640 transitions. [2021-10-03 12:07:14,323 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 1640 transitions. Word has length 23 [2021-10-03 12:07:14,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-03 12:07:14,324 INFO L470 AbstractCegarLoop]: Abstraction has 541 states and 1640 transitions. [2021-10-03 12:07:14,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 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) [2021-10-03 12:07:14,324 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 1640 transitions. [2021-10-03 12:07:14,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-03 12:07:14,326 INFO L504 BasicCegarLoop]: Found error trace [2021-10-03 12:07:14,327 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] [2021-10-03 12:07:14,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-10-03 12:07:14,327 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-03 12:07:14,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-03 12:07:14,328 INFO L82 PathProgramCache]: Analyzing trace with hash 2041384497, now seen corresponding path program 1 times [2021-10-03 12:07:14,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-03 12:07:14,328 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255788131] [2021-10-03 12:07:14,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-03 12:07:14,329 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-03 12:07:14,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-03 12:07:14,349 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-03 12:07:14,350 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-03 12:07:14,350 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255788131] [2021-10-03 12:07:14,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255788131] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-03 12:07:14,350 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-03 12:07:14,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-03 12:07:14,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38111868] [2021-10-03 12:07:14,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-03 12:07:14,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-03 12:07:14,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-03 12:07:14,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-03 12:07:14,352 INFO L87 Difference]: Start difference. First operand 541 states and 1640 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2021-10-03 12:07:14,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-03 12:07:14,359 INFO L93 Difference]: Finished difference Result 303 states and 832 transitions. [2021-10-03 12:07:14,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-03 12:07:14,360 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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 25 [2021-10-03 12:07:14,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-03 12:07:14,363 INFO L225 Difference]: With dead ends: 303 [2021-10-03 12:07:14,363 INFO L226 Difference]: Without dead ends: 287 [2021-10-03 12:07:14,363 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-03 12:07:14,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-10-03 12:07:14,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2021-10-03 12:07:14,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 2.769230769230769) internal successors, (792), 286 states have internal predecessors, (792), 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) [2021-10-03 12:07:14,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 792 transitions. [2021-10-03 12:07:14,372 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 792 transitions. Word has length 25 [2021-10-03 12:07:14,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-03 12:07:14,373 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 792 transitions. [2021-10-03 12:07:14,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2021-10-03 12:07:14,373 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 792 transitions. [2021-10-03 12:07:14,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-03 12:07:14,375 INFO L504 BasicCegarLoop]: Found error trace [2021-10-03 12:07:14,375 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] [2021-10-03 12:07:14,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-10-03 12:07:14,375 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-03 12:07:14,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-03 12:07:14,376 INFO L82 PathProgramCache]: Analyzing trace with hash -656085329, now seen corresponding path program 1 times [2021-10-03 12:07:14,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-03 12:07:14,376 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466676490] [2021-10-03 12:07:14,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-03 12:07:14,377 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-03 12:07:14,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-03 12:07:14,401 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-03 12:07:14,401 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-03 12:07:14,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466676490] [2021-10-03 12:07:14,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466676490] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-03 12:07:14,402 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-03 12:07:14,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-03 12:07:14,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013200272] [2021-10-03 12:07:14,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-03 12:07:14,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-03 12:07:14,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-03 12:07:14,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-03 12:07:14,404 INFO L87 Difference]: Start difference. First operand 287 states and 792 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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) [2021-10-03 12:07:14,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-03 12:07:14,409 INFO L93 Difference]: Finished difference Result 101 states and 220 transitions. [2021-10-03 12:07:14,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-03 12:07:14,410 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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 26 [2021-10-03 12:07:14,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-03 12:07:14,410 INFO L225 Difference]: With dead ends: 101 [2021-10-03 12:07:14,411 INFO L226 Difference]: Without dead ends: 0 [2021-10-03 12:07:14,411 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-03 12:07:14,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-03 12:07:14,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-03 12:07:14,412 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) [2021-10-03 12:07:14,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-03 12:07:14,412 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2021-10-03 12:07:14,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-03 12:07:14,413 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-03 12:07:14,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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) [2021-10-03 12:07:14,413 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-03 12:07:14,413 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-03 12:07:14,416 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-03 12:07:14,417 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-03 12:07:14,417 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-03 12:07:14,417 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-03 12:07:14,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-10-03 12:07:14,422 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-03 12:07:14,423 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-03 12:07:14,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.10 12:07:14 BasicIcfg [2021-10-03 12:07:14,425 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-03 12:07:14,426 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-03 12:07:14,426 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-03 12:07:14,426 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-03 12:07:14,426 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 12:06:56" (3/4) ... [2021-10-03 12:07:14,430 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-03 12:07:14,438 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-10-03 12:07:14,438 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-10-03 12:07:14,438 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2021-10-03 12:07:14,444 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2021-10-03 12:07:14,445 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-10-03 12:07:14,445 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-03 12:07:14,487 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-10-03 12:07:14,487 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-03 12:07:14,489 INFO L168 Benchmark]: Toolchain (without parser) took 18575.18 ms. Allocated memory was 41.9 MB in the beginning and 130.0 MB in the end (delta: 88.1 MB). Free memory was 17.7 MB in the beginning and 47.4 MB in the end (delta: -29.7 MB). Peak memory consumption was 61.4 MB. Max. memory is 16.1 GB. [2021-10-03 12:07:14,489 INFO L168 Benchmark]: CDTParser took 0.71 ms. Allocated memory is still 41.9 MB. Free memory is still 26.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-03 12:07:14,490 INFO L168 Benchmark]: CACSL2BoogieTranslator took 337.04 ms. Allocated memory is still 50.3 MB. Free memory was 35.1 MB in the beginning and 24.3 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-03 12:07:14,490 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.78 ms. Allocated memory is still 50.3 MB. Free memory was 24.1 MB in the beginning and 22.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-03 12:07:14,491 INFO L168 Benchmark]: Boogie Preprocessor took 36.71 ms. Allocated memory is still 50.3 MB. Free memory was 22.3 MB in the beginning and 21.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-03 12:07:14,491 INFO L168 Benchmark]: RCFGBuilder took 527.27 ms. Allocated memory is still 50.3 MB. Free memory was 20.8 MB in the beginning and 19.9 MB in the end (delta: 864.1 kB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. [2021-10-03 12:07:14,492 INFO L168 Benchmark]: TraceAbstraction took 17548.70 ms. Allocated memory was 50.3 MB in the beginning and 130.0 MB in the end (delta: 79.7 MB). Free memory was 19.4 MB in the beginning and 50.5 MB in the end (delta: -31.1 MB). Peak memory consumption was 48.6 MB. Max. memory is 16.1 GB. [2021-10-03 12:07:14,492 INFO L168 Benchmark]: Witness Printer took 61.69 ms. Allocated memory is still 130.0 MB. Free memory was 50.5 MB in the beginning and 47.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-03 12:07:14,494 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.71 ms. Allocated memory is still 41.9 MB. Free memory is still 26.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 337.04 ms. Allocated memory is still 50.3 MB. Free memory was 35.1 MB in the beginning and 24.3 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 46.78 ms. Allocated memory is still 50.3 MB. Free memory was 24.1 MB in the beginning and 22.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 36.71 ms. Allocated memory is still 50.3 MB. Free memory was 22.3 MB in the beginning and 21.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 527.27 ms. Allocated memory is still 50.3 MB. Free memory was 20.8 MB in the beginning and 19.9 MB in the end (delta: 864.1 kB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 17548.70 ms. Allocated memory was 50.3 MB in the beginning and 130.0 MB in the end (delta: 79.7 MB). Free memory was 19.4 MB in the beginning and 50.5 MB in the end (delta: -31.1 MB). Peak memory consumption was 48.6 MB. Max. memory is 16.1 GB. * Witness Printer took 61.69 ms. Allocated memory is still 130.0 MB. Free memory was 50.5 MB in the beginning and 47.4 MB in the end (delta: 3.1 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: 6214.5ms, 167 PlacesBefore, 42 PlacesAfterwards, 170 TransitionsBefore, 37 TransitionsAfterwards, 2174 CoEnabledTransitionPairs, 7 FixpointIterations, 95 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 14 TrivialYvCompositions, 13 ConcurrentYvCompositions, 8 ChoiceCompositions, 164 TotalNumberOfCompositions, 5064 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3589, positive: 3423, positive conditional: 0, positive unconditional: 3423, negative: 166, negative conditional: 0, negative unconditional: 166, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1779, positive: 1720, positive conditional: 0, positive unconditional: 1720, negative: 59, negative conditional: 0, negative unconditional: 59, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1779, positive: 1716, positive conditional: 0, positive unconditional: 1716, negative: 63, negative conditional: 0, negative unconditional: 63, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 63, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 59, negative conditional: 0, negative unconditional: 59, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 149, positive: 9, positive conditional: 0, positive unconditional: 9, negative: 140, negative conditional: 0, negative unconditional: 140, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3589, positive: 1703, positive conditional: 0, positive unconditional: 1703, negative: 107, negative conditional: 0, negative unconditional: 107, unknown: 1779, unknown conditional: 0, unknown unconditional: 1779] , Statistics on independence cache: Total cache size (in pairs): 241, Positive cache size: 220, Positive conditional cache size: 0, Positive unconditional cache size: 220, Negative cache size: 21, Negative conditional cache size: 0, Negative unconditional cache size: 21 - 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: 76]: 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 7 procedures, 201 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 17356.8ms, OverallIterations: 19, TraceHistogramMax: 1, EmptinessCheckTime: 98.1ms, AutomataDifference: 7212.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 6312.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1041 SDtfs, 3035 SDslu, 3328 SDs, 0 SdLazy, 5222 SolverSat, 417 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3507.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 331 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 319 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 968 ImplicationChecksByTransitivity, 2815.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=662occurred in iteration=3, InterpolantAutomatonStates: 246, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 557.5ms AutomataMinimizationTime, 19 MinimizatonAttempts, 4595 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 66.9ms SsaConstructionTime, 644.6ms SatisfiabilityAnalysisTime, 2106.1ms InterpolantComputationTime, 442 NumberOfCodeBlocks, 442 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 423 ConstructedInterpolants, 0 QuantifiedInterpolants, 2944 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 19 InterpolantComputations, 19 PerfectInterpolantSequences, 2/2 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! [2021-10-03 12:07:14,548 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...