./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread/stack-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 997cd7c3 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread/stack-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/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 523f30d87b393530166a10ee5951ac62008d62b5 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-997cd7c-m [2021-09-22 14:19:58,774 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-09-22 14:19:58,775 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-09-22 14:19:58,799 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-09-22 14:19:58,799 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-09-22 14:19:58,800 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-09-22 14:19:58,802 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-09-22 14:19:58,803 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-09-22 14:19:58,804 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-09-22 14:19:58,805 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-09-22 14:19:58,817 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-09-22 14:19:58,823 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-09-22 14:19:58,824 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-09-22 14:19:58,829 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-09-22 14:19:58,831 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-09-22 14:19:58,832 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-09-22 14:19:58,834 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-09-22 14:19:58,837 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-09-22 14:19:58,839 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-09-22 14:19:58,844 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-09-22 14:19:58,845 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-09-22 14:19:58,850 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-09-22 14:19:58,851 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-09-22 14:19:58,851 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-09-22 14:19:58,854 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-09-22 14:19:58,856 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-09-22 14:19:58,856 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-09-22 14:19:58,857 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-09-22 14:19:58,858 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-09-22 14:19:58,859 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-09-22 14:19:58,859 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-09-22 14:19:58,860 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-09-22 14:19:58,861 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-09-22 14:19:58,863 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-09-22 14:19:58,864 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-09-22 14:19:58,865 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-09-22 14:19:58,865 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-09-22 14:19:58,866 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-09-22 14:19:58,866 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-09-22 14:19:58,866 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-09-22 14:19:58,868 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-09-22 14:19:58,869 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-09-22 14:19:58,902 INFO L113 SettingsManager]: Loading preferences was successful [2021-09-22 14:19:58,902 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-09-22 14:19:58,903 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-09-22 14:19:58,904 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-09-22 14:19:58,905 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-09-22 14:19:58,906 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-09-22 14:19:58,906 INFO L138 SettingsManager]: * Use SBE=true [2021-09-22 14:19:58,906 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-09-22 14:19:58,906 INFO L138 SettingsManager]: * sizeof long=4 [2021-09-22 14:19:58,906 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-09-22 14:19:58,907 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-09-22 14:19:58,908 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-09-22 14:19:58,908 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-09-22 14:19:58,908 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-09-22 14:19:58,908 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-09-22 14:19:58,908 INFO L138 SettingsManager]: * sizeof long double=12 [2021-09-22 14:19:58,909 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-09-22 14:19:58,909 INFO L138 SettingsManager]: * Use constant arrays=true [2021-09-22 14:19:58,909 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-09-22 14:19:58,909 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-09-22 14:19:58,909 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-09-22 14:19:58,909 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-09-22 14:19:58,910 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-09-22 14:19:58,910 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-09-22 14:19:58,910 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-09-22 14:19:58,910 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-09-22 14:19:58,910 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-09-22 14:19:58,911 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-09-22 14:19:58,911 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-09-22 14:19:58,911 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-09-22 14:19:58,911 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 523f30d87b393530166a10ee5951ac62008d62b5 [2021-09-22 14:19:59,213 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-09-22 14:19:59,231 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-09-22 14:19:59,233 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-09-22 14:19:59,234 INFO L271 PluginConnector]: Initializing CDTParser... [2021-09-22 14:19:59,235 INFO L275 PluginConnector]: CDTParser initialized [2021-09-22 14:19:59,236 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/stack-1.i [2021-09-22 14:19:59,310 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/667dd77d5/23118bb991144110bf058917392b86d2/FLAG9b4d0892d [2021-09-22 14:19:59,853 INFO L306 CDTParser]: Found 1 translation units. [2021-09-22 14:19:59,854 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/stack-1.i [2021-09-22 14:19:59,871 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/667dd77d5/23118bb991144110bf058917392b86d2/FLAG9b4d0892d [2021-09-22 14:20:00,180 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/667dd77d5/23118bb991144110bf058917392b86d2 [2021-09-22 14:20:00,184 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-09-22 14:20:00,185 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-09-22 14:20:00,186 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-09-22 14:20:00,187 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-09-22 14:20:00,189 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-09-22 14:20:00,189 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.09 02:20:00" (1/1) ... [2021-09-22 14:20:00,190 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50ac8f51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:20:00, skipping insertion in model container [2021-09-22 14:20:00,190 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.09 02:20:00" (1/1) ... [2021-09-22 14:20:00,197 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-09-22 14:20:00,251 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-09-22 14:20:00,575 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/stack-1.i[41520,41533] [2021-09-22 14:20:00,596 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-09-22 14:20:00,606 INFO L203 MainTranslator]: Completed pre-run [2021-09-22 14:20:00,639 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/stack-1.i[41520,41533] [2021-09-22 14:20:00,648 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-09-22 14:20:00,697 INFO L208 MainTranslator]: Completed translation [2021-09-22 14:20:00,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:20:00 WrapperNode [2021-09-22 14:20:00,698 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-09-22 14:20:00,707 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-09-22 14:20:00,707 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-09-22 14:20:00,708 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-09-22 14:20:00,713 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:20:00" (1/1) ... [2021-09-22 14:20:00,728 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:20:00" (1/1) ... [2021-09-22 14:20:00,751 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-09-22 14:20:00,752 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-09-22 14:20:00,752 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-09-22 14:20:00,752 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-09-22 14:20:00,758 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:20:00" (1/1) ... [2021-09-22 14:20:00,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:20:00" (1/1) ... [2021-09-22 14:20:00,762 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:20:00" (1/1) ... [2021-09-22 14:20:00,763 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:20:00" (1/1) ... [2021-09-22 14:20:00,768 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:20:00" (1/1) ... [2021-09-22 14:20:00,772 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:20:00" (1/1) ... [2021-09-22 14:20:00,774 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:20:00" (1/1) ... [2021-09-22 14:20:00,777 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-09-22 14:20:00,777 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-09-22 14:20:00,778 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-09-22 14:20:00,778 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-09-22 14:20:00,778 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:20:00" (1/1) ... [2021-09-22 14:20:00,789 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-09-22 14:20:00,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-09-22 14:20:00,826 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-09-22 14:20:00,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-09-22 14:20:00,858 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2021-09-22 14:20:00,859 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2021-09-22 14:20:00,859 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2021-09-22 14:20:00,859 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2021-09-22 14:20:00,859 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-09-22 14:20:00,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-09-22 14:20:00,859 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-09-22 14:20:00,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-09-22 14:20:00,860 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-09-22 14:20:00,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-09-22 14:20:00,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-09-22 14:20:00,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-09-22 14:20:00,861 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-09-22 14:20:01,276 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-09-22 14:20:01,277 INFO L299 CfgBuilder]: Removed 24 assume(true) statements. [2021-09-22 14:20:01,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.09 02:20:01 BoogieIcfgContainer [2021-09-22 14:20:01,280 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-09-22 14:20:01,282 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-09-22 14:20:01,282 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-09-22 14:20:01,285 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-09-22 14:20:01,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.09 02:20:00" (1/3) ... [2021-09-22 14:20:01,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dfacde4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.09 02:20:01, skipping insertion in model container [2021-09-22 14:20:01,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:20:00" (2/3) ... [2021-09-22 14:20:01,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dfacde4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.09 02:20:01, skipping insertion in model container [2021-09-22 14:20:01,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.09 02:20:01" (3/3) ... [2021-09-22 14:20:01,288 INFO L111 eAbstractionObserver]: Analyzing ICFG stack-1.i [2021-09-22 14:20:01,292 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-09-22 14:20:01,292 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-09-22 14:20:01,293 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-09-22 14:20:01,293 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-09-22 14:20:01,338 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,339 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,339 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,339 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,339 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,339 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,339 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,340 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,340 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,340 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,340 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,340 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,341 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,341 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,341 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,341 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,342 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,342 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,342 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,342 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,343 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,343 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,343 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,344 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,345 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,345 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,345 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,345 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,346 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,346 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,346 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,347 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,347 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,347 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,348 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,348 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,348 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,348 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,349 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,349 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,349 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,349 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,349 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,349 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,350 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,350 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,350 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,350 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,350 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,350 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,351 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,351 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,351 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,351 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,351 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,351 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,352 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,352 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,352 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,352 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,353 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,353 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,353 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,353 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,353 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,354 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,355 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,355 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,355 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,355 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,355 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,356 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,356 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,356 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,357 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,357 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,357 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,357 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,358 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,358 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,358 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,358 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,358 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,358 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,359 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,359 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,359 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,359 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,359 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,360 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,361 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,362 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,363 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,363 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,364 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,364 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,364 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,365 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,365 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,365 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,369 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,369 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,370 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,370 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,370 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,370 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,370 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,370 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,370 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,371 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,371 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,371 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,371 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,371 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,371 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,372 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,372 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,372 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,372 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,372 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,372 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,373 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,373 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,373 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,373 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,373 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,373 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,374 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,374 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,374 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,374 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,374 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,374 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,375 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,375 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,375 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,376 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,376 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,376 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,376 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,376 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,376 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,377 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,377 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,378 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,378 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,378 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,378 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,378 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,378 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,379 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,379 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,379 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,379 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,379 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,379 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,380 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,380 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,380 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,381 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,381 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,381 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,382 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,382 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,383 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,383 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,383 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,384 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,384 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,384 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,384 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,384 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,384 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,384 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,385 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,385 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,385 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,385 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,385 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,385 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,385 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,386 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,386 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,386 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,386 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,386 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,386 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,386 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,387 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,387 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,387 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,387 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,388 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,388 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,388 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,388 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,389 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,389 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,389 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,389 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,389 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,389 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,390 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,390 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,390 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,390 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,390 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,390 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,391 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,391 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,391 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,391 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,391 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,391 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,391 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,392 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,392 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,393 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,401 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,401 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,402 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,402 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,402 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,402 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,402 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,402 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,403 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,404 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,404 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,404 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,404 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,404 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,405 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,405 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,405 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,405 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,405 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,405 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,405 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,406 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,406 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,406 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,406 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,406 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,406 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,407 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,409 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,409 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,410 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,410 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,410 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,410 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,411 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,411 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,411 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,411 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,412 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,412 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,412 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,412 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,412 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,412 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,412 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,413 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,413 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,413 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,413 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,413 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,413 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,417 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,418 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,418 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,418 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,418 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,418 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,418 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,419 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,419 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,419 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,419 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,419 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,419 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,420 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,420 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,420 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,420 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,420 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:20:01,430 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-09-22 14:20:01,481 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-09-22 14:20:01,488 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 [2021-09-22 14:20:01,489 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-09-22 14:20:01,512 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-09-22 14:20:01,521 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 149 places, 152 transitions, 320 flow [2021-09-22 14:20:01,524 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 149 places, 152 transitions, 320 flow [2021-09-22 14:20:01,526 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 149 places, 152 transitions, 320 flow [2021-09-22 14:20:01,596 INFO L129 PetriNetUnfolder]: 10/150 cut-off events. [2021-09-22 14:20:01,597 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-09-22 14:20:01,603 INFO L84 FinitePrefix]: Finished finitePrefix Result has 159 conditions, 150 events. 10/150 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 334 event pairs, 0 based on Foata normal form. 0/138 useless extension candidates. Maximal degree in co-relation 108. Up to 3 conditions per place. [2021-09-22 14:20:01,609 INFO L116 LiptonReduction]: Number of co-enabled transitions 6156 [2021-09-22 14:20:07,716 INFO L131 LiptonReduction]: Checked pairs total: 8550 [2021-09-22 14:20:07,717 INFO L133 LiptonReduction]: Total number of compositions: 142 [2021-09-22 14:20:07,723 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 36 transitions, 88 flow [2021-09-22 14:20:07,744 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 282 states, 279 states have (on average 2.6917562724014337) internal successors, (751), 281 states have internal predecessors, (751), 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) [2021-09-22 14:20:07,747 INFO L276 IsEmpty]: Start isEmpty. Operand has 282 states, 279 states have (on average 2.6917562724014337) internal successors, (751), 281 states have internal predecessors, (751), 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) [2021-09-22 14:20:07,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-09-22 14:20:07,751 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:20:07,752 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-09-22 14:20:07,753 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-09-22 14:20:07,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:20:07,757 INFO L82 PathProgramCache]: Analyzing trace with hash 1203272477, now seen corresponding path program 1 times [2021-09-22 14:20:07,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:20:07,765 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141935739] [2021-09-22 14:20:07,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:20:07,766 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:20:07,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:20:08,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:20:08,020 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:20:08,020 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141935739] [2021-09-22 14:20:08,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141935739] provided 1 perfect and 0 imperfect interpolant sequences [2021-09-22 14:20:08,021 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-09-22 14:20:08,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-09-22 14:20:08,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369767868] [2021-09-22 14:20:08,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-09-22 14:20:08,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:20:08,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-09-22 14:20:08,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-09-22 14:20:08,047 INFO L87 Difference]: Start difference. First operand has 282 states, 279 states have (on average 2.6917562724014337) internal successors, (751), 281 states have internal predecessors, (751), 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 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2021-09-22 14:20:08,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:20:08,126 INFO L93 Difference]: Finished difference Result 414 states and 1064 transitions. [2021-09-22 14:20:08,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-09-22 14:20:08,127 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2021-09-22 14:20:08,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:20:08,148 INFO L225 Difference]: With dead ends: 414 [2021-09-22 14:20:08,149 INFO L226 Difference]: Without dead ends: 396 [2021-09-22 14:20:08,150 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-09-22 14:20:08,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2021-09-22 14:20:08,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 372. [2021-09-22 14:20:08,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 369 states have (on average 2.6856368563685638) internal successors, (991), 371 states have internal predecessors, (991), 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) [2021-09-22 14:20:08,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 991 transitions. [2021-09-22 14:20:08,232 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 991 transitions. Word has length 6 [2021-09-22 14:20:08,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:20:08,232 INFO L470 AbstractCegarLoop]: Abstraction has 372 states and 991 transitions. [2021-09-22 14:20:08,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2021-09-22 14:20:08,232 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 991 transitions. [2021-09-22 14:20:08,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-09-22 14:20:08,233 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:20:08,233 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:20:08,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-09-22 14:20:08,234 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-09-22 14:20:08,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:20:08,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1812969123, now seen corresponding path program 1 times [2021-09-22 14:20:08,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:20:08,235 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623579984] [2021-09-22 14:20:08,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:20:08,235 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:20:08,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:20:08,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:20:08,332 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:20:08,332 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623579984] [2021-09-22 14:20:08,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623579984] provided 1 perfect and 0 imperfect interpolant sequences [2021-09-22 14:20:08,332 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-09-22 14:20:08,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-09-22 14:20:08,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324519846] [2021-09-22 14:20:08,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-09-22 14:20:08,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:20:08,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-09-22 14:20:08,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-09-22 14:20:08,335 INFO L87 Difference]: Start difference. First operand 372 states and 991 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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) [2021-09-22 14:20:08,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:20:08,352 INFO L93 Difference]: Finished difference Result 410 states and 1089 transitions. [2021-09-22 14:20:08,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-09-22 14:20:08,357 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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 10 [2021-09-22 14:20:08,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:20:08,360 INFO L225 Difference]: With dead ends: 410 [2021-09-22 14:20:08,361 INFO L226 Difference]: Without dead ends: 410 [2021-09-22 14:20:08,361 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-09-22 14:20:08,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2021-09-22 14:20:08,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 410. [2021-09-22 14:20:08,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 407 states have (on average 2.675675675675676) internal successors, (1089), 409 states have internal predecessors, (1089), 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) [2021-09-22 14:20:08,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 1089 transitions. [2021-09-22 14:20:08,380 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 1089 transitions. Word has length 10 [2021-09-22 14:20:08,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:20:08,380 INFO L470 AbstractCegarLoop]: Abstraction has 410 states and 1089 transitions. [2021-09-22 14:20:08,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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) [2021-09-22 14:20:08,381 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 1089 transitions. [2021-09-22 14:20:08,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-09-22 14:20:08,382 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:20:08,382 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:20:08,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-09-22 14:20:08,382 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-09-22 14:20:08,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:20:08,383 INFO L82 PathProgramCache]: Analyzing trace with hash 951073680, now seen corresponding path program 1 times [2021-09-22 14:20:08,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:20:08,383 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689763908] [2021-09-22 14:20:08,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:20:08,384 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:20:08,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:20:08,472 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:20:08,472 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:20:08,472 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689763908] [2021-09-22 14:20:08,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689763908] provided 0 perfect and 1 imperfect interpolant sequences [2021-09-22 14:20:08,473 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659909570] [2021-09-22 14:20:08,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:20:08,473 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-09-22 14:20:08,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-09-22 14:20:08,479 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-09-22 14:20:08,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-09-22 14:20:08,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:20:08,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 4 conjunts are in the unsatisfiable core [2021-09-22 14:20:08,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-09-22 14:20:08,696 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:20:08,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1659909570] provided 0 perfect and 1 imperfect interpolant sequences [2021-09-22 14:20:08,696 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-09-22 14:20:08,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-09-22 14:20:08,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068012161] [2021-09-22 14:20:08,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-09-22 14:20:08,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:20:08,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-09-22 14:20:08,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-09-22 14:20:08,697 INFO L87 Difference]: Start difference. First operand 410 states and 1089 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 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) [2021-09-22 14:20:08,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:20:08,789 INFO L93 Difference]: Finished difference Result 730 states and 1874 transitions. [2021-09-22 14:20:08,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-09-22 14:20:08,789 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 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 13 [2021-09-22 14:20:08,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:20:08,803 INFO L225 Difference]: With dead ends: 730 [2021-09-22 14:20:08,803 INFO L226 Difference]: Without dead ends: 718 [2021-09-22 14:20:08,803 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 31.1ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-09-22 14:20:08,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2021-09-22 14:20:08,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 500. [2021-09-22 14:20:08,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 497 states have (on average 2.670020120724346) internal successors, (1327), 499 states have internal predecessors, (1327), 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) [2021-09-22 14:20:08,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 1327 transitions. [2021-09-22 14:20:08,847 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 1327 transitions. Word has length 13 [2021-09-22 14:20:08,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:20:08,852 INFO L470 AbstractCegarLoop]: Abstraction has 500 states and 1327 transitions. [2021-09-22 14:20:08,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 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) [2021-09-22 14:20:08,853 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 1327 transitions. [2021-09-22 14:20:08,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-09-22 14:20:08,855 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:20:08,855 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:20:08,882 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-09-22 14:20:09,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-09-22 14:20:09,057 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-09-22 14:20:09,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:20:09,058 INFO L82 PathProgramCache]: Analyzing trace with hash 158671420, now seen corresponding path program 1 times [2021-09-22 14:20:09,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:20:09,058 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812229841] [2021-09-22 14:20:09,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:20:09,058 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:20:09,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:20:09,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:20:09,098 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:20:09,098 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812229841] [2021-09-22 14:20:09,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812229841] provided 1 perfect and 0 imperfect interpolant sequences [2021-09-22 14:20:09,099 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-09-22 14:20:09,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-09-22 14:20:09,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518171195] [2021-09-22 14:20:09,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-09-22 14:20:09,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:20:09,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-09-22 14:20:09,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-09-22 14:20:09,100 INFO L87 Difference]: Start difference. First operand 500 states and 1327 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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) [2021-09-22 14:20:09,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:20:09,119 INFO L93 Difference]: Finished difference Result 236 states and 530 transitions. [2021-09-22 14:20:09,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-09-22 14:20:09,119 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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 16 [2021-09-22 14:20:09,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:20:09,121 INFO L225 Difference]: With dead ends: 236 [2021-09-22 14:20:09,121 INFO L226 Difference]: Without dead ends: 236 [2021-09-22 14:20:09,121 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-09-22 14:20:09,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2021-09-22 14:20:09,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 226. [2021-09-22 14:20:09,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 224 states have (on average 2.2455357142857144) internal successors, (503), 225 states have internal predecessors, (503), 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) [2021-09-22 14:20:09,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 503 transitions. [2021-09-22 14:20:09,128 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 503 transitions. Word has length 16 [2021-09-22 14:20:09,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:20:09,128 INFO L470 AbstractCegarLoop]: Abstraction has 226 states and 503 transitions. [2021-09-22 14:20:09,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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) [2021-09-22 14:20:09,129 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 503 transitions. [2021-09-22 14:20:09,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-09-22 14:20:09,130 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:20:09,130 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:20:09,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-09-22 14:20:09,131 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-09-22 14:20:09,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:20:09,131 INFO L82 PathProgramCache]: Analyzing trace with hash 1994162131, now seen corresponding path program 1 times [2021-09-22 14:20:09,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:20:09,131 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188777290] [2021-09-22 14:20:09,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:20:09,132 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:20:09,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:20:09,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:20:09,174 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:20:09,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188777290] [2021-09-22 14:20:09,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188777290] provided 1 perfect and 0 imperfect interpolant sequences [2021-09-22 14:20:09,174 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-09-22 14:20:09,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-09-22 14:20:09,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646385274] [2021-09-22 14:20:09,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-09-22 14:20:09,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:20:09,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-09-22 14:20:09,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-09-22 14:20:09,176 INFO L87 Difference]: Start difference. First operand 226 states and 503 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2021-09-22 14:20:09,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:20:09,199 INFO L93 Difference]: Finished difference Result 284 states and 629 transitions. [2021-09-22 14:20:09,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-09-22 14:20:09,199 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 17 [2021-09-22 14:20:09,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:20:09,201 INFO L225 Difference]: With dead ends: 284 [2021-09-22 14:20:09,201 INFO L226 Difference]: Without dead ends: 284 [2021-09-22 14:20:09,201 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-09-22 14:20:09,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2021-09-22 14:20:09,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 228. [2021-09-22 14:20:09,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 226 states have (on average 2.256637168141593) internal successors, (510), 227 states have internal predecessors, (510), 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) [2021-09-22 14:20:09,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 510 transitions. [2021-09-22 14:20:09,208 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 510 transitions. Word has length 17 [2021-09-22 14:20:09,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:20:09,209 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 510 transitions. [2021-09-22 14:20:09,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2021-09-22 14:20:09,209 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 510 transitions. [2021-09-22 14:20:09,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-09-22 14:20:09,211 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:20:09,211 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2021-09-22 14:20:09,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-09-22 14:20:09,212 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-09-22 14:20:09,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:20:09,212 INFO L82 PathProgramCache]: Analyzing trace with hash 531080125, now seen corresponding path program 2 times [2021-09-22 14:20:09,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:20:09,212 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917990072] [2021-09-22 14:20:09,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:20:09,213 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:20:09,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:20:09,279 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:20:09,280 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:20:09,280 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917990072] [2021-09-22 14:20:09,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917990072] provided 0 perfect and 1 imperfect interpolant sequences [2021-09-22 14:20:09,281 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774907239] [2021-09-22 14:20:09,281 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-09-22 14:20:09,282 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-09-22 14:20:09,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-09-22 14:20:09,293 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-09-22 14:20:09,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-09-22 14:20:09,397 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-09-22 14:20:09,397 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-09-22 14:20:09,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 6 conjunts are in the unsatisfiable core [2021-09-22 14:20:09,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-09-22 14:20:09,496 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:20:09,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [774907239] provided 0 perfect and 1 imperfect interpolant sequences [2021-09-22 14:20:09,497 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-09-22 14:20:09,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2021-09-22 14:20:09,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756102580] [2021-09-22 14:20:09,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-09-22 14:20:09,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:20:09,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-09-22 14:20:09,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-09-22 14:20:09,500 INFO L87 Difference]: Start difference. First operand 228 states and 510 transitions. Second operand has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 8 states have internal predecessors, (29), 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) [2021-09-22 14:20:09,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:20:09,588 INFO L93 Difference]: Finished difference Result 412 states and 893 transitions. [2021-09-22 14:20:09,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-09-22 14:20:09,589 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 8 states have internal predecessors, (29), 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 20 [2021-09-22 14:20:09,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:20:09,591 INFO L225 Difference]: With dead ends: 412 [2021-09-22 14:20:09,591 INFO L226 Difference]: Without dead ends: 412 [2021-09-22 14:20:09,593 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 39.2ms TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-09-22 14:20:09,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2021-09-22 14:20:09,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 284. [2021-09-22 14:20:09,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 282 states have (on average 2.2588652482269502) internal successors, (637), 283 states have internal predecessors, (637), 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) [2021-09-22 14:20:09,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 637 transitions. [2021-09-22 14:20:09,611 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 637 transitions. Word has length 20 [2021-09-22 14:20:09,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:20:09,612 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 637 transitions. [2021-09-22 14:20:09,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 8 states have internal predecessors, (29), 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) [2021-09-22 14:20:09,612 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 637 transitions. [2021-09-22 14:20:09,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-09-22 14:20:09,618 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:20:09,618 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] [2021-09-22 14:20:09,648 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-09-22 14:20:09,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-09-22 14:20:09,841 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-09-22 14:20:09,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:20:09,841 INFO L82 PathProgramCache]: Analyzing trace with hash -1375844924, now seen corresponding path program 1 times [2021-09-22 14:20:09,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:20:09,841 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794464454] [2021-09-22 14:20:09,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:20:09,842 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:20:09,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:20:10,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:20:10,297 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:20:10,297 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794464454] [2021-09-22 14:20:10,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794464454] provided 1 perfect and 0 imperfect interpolant sequences [2021-09-22 14:20:10,297 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-09-22 14:20:10,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-09-22 14:20:10,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661802729] [2021-09-22 14:20:10,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-09-22 14:20:10,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:20:10,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-09-22 14:20:10,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-09-22 14:20:10,299 INFO L87 Difference]: Start difference. First operand 284 states and 637 transitions. Second operand has 14 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 13 states have internal predecessors, (21), 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) [2021-09-22 14:20:11,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:20:11,159 INFO L93 Difference]: Finished difference Result 531 states and 1147 transitions. [2021-09-22 14:20:11,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-09-22 14:20:11,160 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 13 states have internal predecessors, (21), 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 21 [2021-09-22 14:20:11,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:20:11,162 INFO L225 Difference]: With dead ends: 531 [2021-09-22 14:20:11,162 INFO L226 Difference]: Without dead ends: 474 [2021-09-22 14:20:11,163 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 545.0ms TimeCoverageRelationStatistics Valid=134, Invalid=622, Unknown=0, NotChecked=0, Total=756 [2021-09-22 14:20:11,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2021-09-22 14:20:11,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 346. [2021-09-22 14:20:11,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 344 states have (on average 2.2674418604651163) internal successors, (780), 345 states have internal predecessors, (780), 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) [2021-09-22 14:20:11,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 780 transitions. [2021-09-22 14:20:11,173 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 780 transitions. Word has length 21 [2021-09-22 14:20:11,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:20:11,173 INFO L470 AbstractCegarLoop]: Abstraction has 346 states and 780 transitions. [2021-09-22 14:20:11,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 13 states have internal predecessors, (21), 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) [2021-09-22 14:20:11,174 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 780 transitions. [2021-09-22 14:20:11,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-09-22 14:20:11,175 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:20:11,175 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] [2021-09-22 14:20:11,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-09-22 14:20:11,176 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-09-22 14:20:11,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:20:11,176 INFO L82 PathProgramCache]: Analyzing trace with hash 949323480, now seen corresponding path program 2 times [2021-09-22 14:20:11,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:20:11,176 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231439927] [2021-09-22 14:20:11,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:20:11,177 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:20:11,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:20:11,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:20:11,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:20:11,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231439927] [2021-09-22 14:20:11,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231439927] provided 1 perfect and 0 imperfect interpolant sequences [2021-09-22 14:20:11,609 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-09-22 14:20:11,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-09-22 14:20:11,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756327099] [2021-09-22 14:20:11,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-09-22 14:20:11,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:20:11,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-09-22 14:20:11,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-09-22 14:20:11,627 INFO L87 Difference]: Start difference. First operand 346 states and 780 transitions. Second operand has 16 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 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) [2021-09-22 14:20:12,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:20:12,292 INFO L93 Difference]: Finished difference Result 557 states and 1214 transitions. [2021-09-22 14:20:12,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-09-22 14:20:12,293 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 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 21 [2021-09-22 14:20:12,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:20:12,295 INFO L225 Difference]: With dead ends: 557 [2021-09-22 14:20:12,295 INFO L226 Difference]: Without dead ends: 512 [2021-09-22 14:20:12,296 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 420.5ms TimeCoverageRelationStatistics Valid=95, Invalid=505, Unknown=0, NotChecked=0, Total=600 [2021-09-22 14:20:12,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2021-09-22 14:20:12,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 376. [2021-09-22 14:20:12,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 374 states have (on average 2.2566844919786098) internal successors, (844), 375 states have internal predecessors, (844), 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) [2021-09-22 14:20:12,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 844 transitions. [2021-09-22 14:20:12,306 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 844 transitions. Word has length 21 [2021-09-22 14:20:12,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:20:12,306 INFO L470 AbstractCegarLoop]: Abstraction has 376 states and 844 transitions. [2021-09-22 14:20:12,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 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) [2021-09-22 14:20:12,307 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 844 transitions. [2021-09-22 14:20:12,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-09-22 14:20:12,313 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:20:12,314 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] [2021-09-22 14:20:12,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-09-22 14:20:12,314 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-09-22 14:20:12,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:20:12,315 INFO L82 PathProgramCache]: Analyzing trace with hash -715008454, now seen corresponding path program 3 times [2021-09-22 14:20:12,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:20:12,315 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014083038] [2021-09-22 14:20:12,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:20:12,315 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:20:12,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:20:12,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:20:12,745 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:20:12,745 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014083038] [2021-09-22 14:20:12,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014083038] provided 1 perfect and 0 imperfect interpolant sequences [2021-09-22 14:20:12,745 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-09-22 14:20:12,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-09-22 14:20:12,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591497356] [2021-09-22 14:20:12,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-09-22 14:20:12,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:20:12,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-09-22 14:20:12,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2021-09-22 14:20:12,747 INFO L87 Difference]: Start difference. First operand 376 states and 844 transitions. Second operand has 16 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 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) [2021-09-22 14:20:13,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:20:13,679 INFO L93 Difference]: Finished difference Result 628 states and 1347 transitions. [2021-09-22 14:20:13,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-09-22 14:20:13,684 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 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 21 [2021-09-22 14:20:13,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:20:13,687 INFO L225 Difference]: With dead ends: 628 [2021-09-22 14:20:13,687 INFO L226 Difference]: Without dead ends: 570 [2021-09-22 14:20:13,688 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 663.1ms TimeCoverageRelationStatistics Valid=140, Invalid=672, Unknown=0, NotChecked=0, Total=812 [2021-09-22 14:20:13,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2021-09-22 14:20:13,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 334. [2021-09-22 14:20:13,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 332 states have (on average 2.253012048192771) internal successors, (748), 333 states have internal predecessors, (748), 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) [2021-09-22 14:20:13,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 748 transitions. [2021-09-22 14:20:13,699 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 748 transitions. Word has length 21 [2021-09-22 14:20:13,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:20:13,700 INFO L470 AbstractCegarLoop]: Abstraction has 334 states and 748 transitions. [2021-09-22 14:20:13,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 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) [2021-09-22 14:20:13,700 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 748 transitions. [2021-09-22 14:20:13,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-09-22 14:20:13,701 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:20:13,701 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2021-09-22 14:20:13,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-09-22 14:20:13,702 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-09-22 14:20:13,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:20:13,702 INFO L82 PathProgramCache]: Analyzing trace with hash -2120212752, now seen corresponding path program 3 times [2021-09-22 14:20:13,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:20:13,703 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626561717] [2021-09-22 14:20:13,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:20:13,703 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:20:13,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:20:13,770 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:20:13,771 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:20:13,771 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626561717] [2021-09-22 14:20:13,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626561717] provided 0 perfect and 1 imperfect interpolant sequences [2021-09-22 14:20:13,771 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [453742470] [2021-09-22 14:20:13,771 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-09-22 14:20:13,771 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-09-22 14:20:13,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-09-22 14:20:13,773 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-09-22 14:20:13,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-09-22 14:20:13,903 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-09-22 14:20:13,903 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-09-22 14:20:13,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 8 conjunts are in the unsatisfiable core [2021-09-22 14:20:13,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-09-22 14:20:13,996 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:20:13,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [453742470] provided 0 perfect and 1 imperfect interpolant sequences [2021-09-22 14:20:13,998 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-09-22 14:20:13,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2021-09-22 14:20:13,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258238456] [2021-09-22 14:20:13,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-09-22 14:20:13,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:20:13,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-09-22 14:20:13,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-09-22 14:20:14,000 INFO L87 Difference]: Start difference. First operand 334 states and 748 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 10 states have internal predecessors, (36), 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) [2021-09-22 14:20:14,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:20:14,086 INFO L93 Difference]: Finished difference Result 576 states and 1235 transitions. [2021-09-22 14:20:14,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-09-22 14:20:14,087 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-09-22 14:20:14,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:20:14,090 INFO L225 Difference]: With dead ends: 576 [2021-09-22 14:20:14,090 INFO L226 Difference]: Without dead ends: 576 [2021-09-22 14:20:14,091 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 48.4ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-09-22 14:20:14,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2021-09-22 14:20:14,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 390. [2021-09-22 14:20:14,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 388 states have (on average 2.2551546391752577) internal successors, (875), 389 states have internal predecessors, (875), 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) [2021-09-22 14:20:14,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 875 transitions. [2021-09-22 14:20:14,101 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 875 transitions. Word has length 27 [2021-09-22 14:20:14,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:20:14,101 INFO L470 AbstractCegarLoop]: Abstraction has 390 states and 875 transitions. [2021-09-22 14:20:14,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 10 states have internal predecessors, (36), 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) [2021-09-22 14:20:14,101 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 875 transitions. [2021-09-22 14:20:14,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-09-22 14:20:14,103 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:20:14,104 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:20:14,132 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-09-22 14:20:14,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-09-22 14:20:14,317 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-09-22 14:20:14,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:20:14,317 INFO L82 PathProgramCache]: Analyzing trace with hash -1554514995, now seen corresponding path program 4 times [2021-09-22 14:20:14,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:20:14,318 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026479006] [2021-09-22 14:20:14,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:20:14,318 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:20:14,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:20:14,695 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:20:14,696 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:20:14,696 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026479006] [2021-09-22 14:20:14,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026479006] provided 0 perfect and 1 imperfect interpolant sequences [2021-09-22 14:20:14,696 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429050818] [2021-09-22 14:20:14,696 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-09-22 14:20:14,696 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-09-22 14:20:14,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-09-22 14:20:14,701 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-09-22 14:20:14,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-09-22 14:20:14,827 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-09-22 14:20:14,827 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-09-22 14:20:14,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 54 conjunts are in the unsatisfiable core [2021-09-22 14:20:14,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-09-22 14:20:15,088 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2021-09-22 14:20:15,310 INFO L354 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2021-09-22 14:20:15,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 41 [2021-09-22 14:20:15,376 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:20:15,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429050818] provided 0 perfect and 1 imperfect interpolant sequences [2021-09-22 14:20:15,377 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-09-22 14:20:15,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 17 [2021-09-22 14:20:15,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775212179] [2021-09-22 14:20:15,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-09-22 14:20:15,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:20:15,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-09-22 14:20:15,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2021-09-22 14:20:15,379 INFO L87 Difference]: Start difference. First operand 390 states and 875 transitions. Second operand has 19 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 18 states have internal predecessors, (33), 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) [2021-09-22 14:20:16,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:20:16,260 INFO L93 Difference]: Finished difference Result 643 states and 1395 transitions. [2021-09-22 14:20:16,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-09-22 14:20:16,261 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 18 states have internal predecessors, (33), 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 28 [2021-09-22 14:20:16,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:20:16,264 INFO L225 Difference]: With dead ends: 643 [2021-09-22 14:20:16,264 INFO L226 Difference]: Without dead ends: 643 [2021-09-22 14:20:16,264 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 21 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 569.2ms TimeCoverageRelationStatistics Valid=140, Invalid=852, Unknown=0, NotChecked=0, Total=992 [2021-09-22 14:20:16,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2021-09-22 14:20:16,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 503. [2021-09-22 14:20:16,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 503 states, 501 states have (on average 2.279441117764471) internal successors, (1142), 502 states have internal predecessors, (1142), 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) [2021-09-22 14:20:16,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 1142 transitions. [2021-09-22 14:20:16,277 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 1142 transitions. Word has length 28 [2021-09-22 14:20:16,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:20:16,279 INFO L470 AbstractCegarLoop]: Abstraction has 503 states and 1142 transitions. [2021-09-22 14:20:16,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 18 states have internal predecessors, (33), 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) [2021-09-22 14:20:16,279 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 1142 transitions. [2021-09-22 14:20:16,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-09-22 14:20:16,281 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:20:16,282 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:20:16,313 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-09-22 14:20:16,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-09-22 14:20:16,505 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-09-22 14:20:16,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:20:16,505 INFO L82 PathProgramCache]: Analyzing trace with hash 363622917, now seen corresponding path program 5 times [2021-09-22 14:20:16,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:20:16,505 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959208902] [2021-09-22 14:20:16,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:20:16,506 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:20:16,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:20:17,002 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:20:17,003 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:20:17,003 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959208902] [2021-09-22 14:20:17,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959208902] provided 0 perfect and 1 imperfect interpolant sequences [2021-09-22 14:20:17,003 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951172939] [2021-09-22 14:20:17,003 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-09-22 14:20:17,003 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-09-22 14:20:17,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-09-22 14:20:17,009 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-09-22 14:20:17,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-09-22 14:20:17,193 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-09-22 14:20:17,193 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-09-22 14:20:17,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 57 conjunts are in the unsatisfiable core [2021-09-22 14:20:17,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-09-22 14:20:17,445 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2021-09-22 14:20:17,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-09-22 14:20:17,500 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 23 [2021-09-22 14:20:17,775 INFO L354 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2021-09-22 14:20:17,777 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 41 [2021-09-22 14:20:17,842 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:20:17,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1951172939] provided 0 perfect and 1 imperfect interpolant sequences [2021-09-22 14:20:17,843 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-09-22 14:20:17,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 19 [2021-09-22 14:20:17,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807795029] [2021-09-22 14:20:17,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-09-22 14:20:17,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:20:17,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-09-22 14:20:17,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=371, Unknown=0, NotChecked=0, Total=420 [2021-09-22 14:20:17,847 INFO L87 Difference]: Start difference. First operand 503 states and 1142 transitions. Second operand has 21 states, 20 states have (on average 1.7) internal successors, (34), 20 states have internal predecessors, (34), 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) [2021-09-22 14:20:18,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:20:18,624 INFO L93 Difference]: Finished difference Result 736 states and 1608 transitions. [2021-09-22 14:20:18,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-09-22 14:20:18,625 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.7) internal successors, (34), 20 states have internal predecessors, (34), 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 28 [2021-09-22 14:20:18,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:20:18,628 INFO L225 Difference]: With dead ends: 736 [2021-09-22 14:20:18,628 INFO L226 Difference]: Without dead ends: 736 [2021-09-22 14:20:18,628 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 20 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 560.0ms TimeCoverageRelationStatistics Valid=109, Invalid=761, Unknown=0, NotChecked=0, Total=870 [2021-09-22 14:20:18,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2021-09-22 14:20:18,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 533. [2021-09-22 14:20:18,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 531 states have (on average 2.310734463276836) internal successors, (1227), 532 states have internal predecessors, (1227), 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) [2021-09-22 14:20:18,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 1227 transitions. [2021-09-22 14:20:18,641 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 1227 transitions. Word has length 28 [2021-09-22 14:20:18,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:20:18,642 INFO L470 AbstractCegarLoop]: Abstraction has 533 states and 1227 transitions. [2021-09-22 14:20:18,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.7) internal successors, (34), 20 states have internal predecessors, (34), 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) [2021-09-22 14:20:18,642 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 1227 transitions. [2021-09-22 14:20:18,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-09-22 14:20:18,644 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:20:18,644 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:20:18,669 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-09-22 14:20:18,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-09-22 14:20:18,861 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-09-22 14:20:18,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:20:18,861 INFO L82 PathProgramCache]: Analyzing trace with hash -1300709017, now seen corresponding path program 6 times [2021-09-22 14:20:18,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:20:18,861 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444551203] [2021-09-22 14:20:18,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:20:18,862 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:20:18,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:20:19,464 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:20:19,464 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:20:19,465 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444551203] [2021-09-22 14:20:19,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444551203] provided 0 perfect and 1 imperfect interpolant sequences [2021-09-22 14:20:19,465 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882607306] [2021-09-22 14:20:19,465 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-09-22 14:20:19,465 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-09-22 14:20:19,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-09-22 14:20:19,469 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-09-22 14:20:19,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-09-22 14:20:19,668 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-09-22 14:20:19,668 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-09-22 14:20:19,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 51 conjunts are in the unsatisfiable core [2021-09-22 14:20:19,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-09-22 14:20:19,697 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-09-22 14:20:19,697 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 3398 treesize of output 3134 [2021-09-22 14:20:20,208 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 66 [2021-09-22 14:20:20,384 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-09-22 14:20:20,384 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 43 [2021-09-22 14:20:20,721 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 36 [2021-09-22 14:20:20,815 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-09-22 14:20:20,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882607306] provided 0 perfect and 1 imperfect interpolant sequences [2021-09-22 14:20:20,815 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-09-22 14:20:20,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 27 [2021-09-22 14:20:20,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479198102] [2021-09-22 14:20:20,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-09-22 14:20:20,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:20:20,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-09-22 14:20:20,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=741, Unknown=0, NotChecked=0, Total=812 [2021-09-22 14:20:20,816 INFO L87 Difference]: Start difference. First operand 533 states and 1227 transitions. Second operand has 29 states, 28 states have (on average 1.9642857142857142) internal successors, (55), 28 states have internal predecessors, (55), 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) [2021-09-22 14:20:25,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:20:25,472 INFO L93 Difference]: Finished difference Result 989 states and 2143 transitions. [2021-09-22 14:20:25,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-09-22 14:20:25,480 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 1.9642857142857142) internal successors, (55), 28 states have internal predecessors, (55), 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 28 [2021-09-22 14:20:25,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:20:25,484 INFO L225 Difference]: With dead ends: 989 [2021-09-22 14:20:25,484 INFO L226 Difference]: Without dead ends: 989 [2021-09-22 14:20:25,486 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1029 ImplicationChecksByTransitivity, 3844.7ms TimeCoverageRelationStatistics Valid=613, Invalid=4499, Unknown=0, NotChecked=0, Total=5112 [2021-09-22 14:20:25,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 989 states. [2021-09-22 14:20:25,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 989 to 510. [2021-09-22 14:20:25,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 510 states, 508 states have (on average 2.3169291338582676) internal successors, (1177), 509 states have internal predecessors, (1177), 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) [2021-09-22 14:20:25,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 1177 transitions. [2021-09-22 14:20:25,504 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 1177 transitions. Word has length 28 [2021-09-22 14:20:25,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:20:25,504 INFO L470 AbstractCegarLoop]: Abstraction has 510 states and 1177 transitions. [2021-09-22 14:20:25,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 1.9642857142857142) internal successors, (55), 28 states have internal predecessors, (55), 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) [2021-09-22 14:20:25,505 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 1177 transitions. [2021-09-22 14:20:25,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-09-22 14:20:25,506 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:20:25,506 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2021-09-22 14:20:25,533 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-09-22 14:20:25,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-09-22 14:20:25,730 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-09-22 14:20:25,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:20:25,730 INFO L82 PathProgramCache]: Analyzing trace with hash 1527985245, now seen corresponding path program 4 times [2021-09-22 14:20:25,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:20:25,730 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6660912] [2021-09-22 14:20:25,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:20:25,730 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:20:25,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:20:25,823 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:20:25,824 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:20:25,824 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6660912] [2021-09-22 14:20:25,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6660912] provided 0 perfect and 1 imperfect interpolant sequences [2021-09-22 14:20:25,824 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138307922] [2021-09-22 14:20:25,824 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-09-22 14:20:25,824 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-09-22 14:20:25,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-09-22 14:20:25,826 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-09-22 14:20:25,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-09-22 14:20:26,053 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-09-22 14:20:26,053 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-09-22 14:20:26,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 10 conjunts are in the unsatisfiable core [2021-09-22 14:20:26,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-09-22 14:20:26,168 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:20:26,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138307922] provided 0 perfect and 1 imperfect interpolant sequences [2021-09-22 14:20:26,169 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-09-22 14:20:26,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2021-09-22 14:20:26,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286461733] [2021-09-22 14:20:26,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-09-22 14:20:26,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:20:26,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-09-22 14:20:26,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-09-22 14:20:26,170 INFO L87 Difference]: Start difference. First operand 510 states and 1177 transitions. Second operand has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 12 states have internal predecessors, (43), 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) [2021-09-22 14:20:26,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:20:26,263 INFO L93 Difference]: Finished difference Result 778 states and 1712 transitions. [2021-09-22 14:20:26,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-09-22 14:20:26,264 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 12 states have internal predecessors, (43), 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 34 [2021-09-22 14:20:26,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:20:26,267 INFO L225 Difference]: With dead ends: 778 [2021-09-22 14:20:26,267 INFO L226 Difference]: Without dead ends: 778 [2021-09-22 14:20:26,267 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 65.3ms TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2021-09-22 14:20:26,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2021-09-22 14:20:26,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 566. [2021-09-22 14:20:26,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 564 states have (on average 2.3120567375886525) internal successors, (1304), 565 states have internal predecessors, (1304), 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) [2021-09-22 14:20:26,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 1304 transitions. [2021-09-22 14:20:26,281 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 1304 transitions. Word has length 34 [2021-09-22 14:20:26,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:20:26,282 INFO L470 AbstractCegarLoop]: Abstraction has 566 states and 1304 transitions. [2021-09-22 14:20:26,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 12 states have internal predecessors, (43), 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) [2021-09-22 14:20:26,282 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 1304 transitions. [2021-09-22 14:20:26,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-09-22 14:20:26,283 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:20:26,284 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:20:26,313 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-09-22 14:20:26,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-09-22 14:20:26,509 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-09-22 14:20:26,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:20:26,509 INFO L82 PathProgramCache]: Analyzing trace with hash 142621127, now seen corresponding path program 1 times [2021-09-22 14:20:26,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:20:26,509 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710411952] [2021-09-22 14:20:26,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:20:26,510 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:20:26,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:20:27,120 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:20:27,121 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:20:27,121 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710411952] [2021-09-22 14:20:27,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710411952] provided 0 perfect and 1 imperfect interpolant sequences [2021-09-22 14:20:27,121 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367503184] [2021-09-22 14:20:27,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:20:27,121 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-09-22 14:20:27,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-09-22 14:20:27,122 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-09-22 14:20:27,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-09-22 14:20:27,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:20:27,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 62 conjunts are in the unsatisfiable core [2021-09-22 14:20:27,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-09-22 14:20:27,523 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 66 [2021-09-22 14:20:27,817 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-09-22 14:20:27,817 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 49 [2021-09-22 14:20:28,328 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 45 [2021-09-22 14:20:28,487 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:20:28,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367503184] provided 0 perfect and 1 imperfect interpolant sequences [2021-09-22 14:20:28,487 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-09-22 14:20:28,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17] total 36 [2021-09-22 14:20:28,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960222052] [2021-09-22 14:20:28,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-09-22 14:20:28,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:20:28,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-09-22 14:20:28,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1227, Unknown=0, NotChecked=0, Total=1332 [2021-09-22 14:20:28,490 INFO L87 Difference]: Start difference. First operand 566 states and 1304 transitions. Second operand has 37 states, 36 states have (on average 2.0) internal successors, (72), 37 states have internal predecessors, (72), 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) [2021-09-22 14:20:37,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:20:37,907 INFO L93 Difference]: Finished difference Result 2097 states and 4606 transitions. [2021-09-22 14:20:37,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-09-22 14:20:37,911 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 2.0) internal successors, (72), 37 states have internal predecessors, (72), 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 36 [2021-09-22 14:20:37,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:20:37,918 INFO L225 Difference]: With dead ends: 2097 [2021-09-22 14:20:37,918 INFO L226 Difference]: Without dead ends: 1988 [2021-09-22 14:20:37,920 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2704 ImplicationChecksByTransitivity, 7860.4ms TimeCoverageRelationStatistics Valid=1125, Invalid=9381, Unknown=0, NotChecked=0, Total=10506 [2021-09-22 14:20:37,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1988 states. [2021-09-22 14:20:37,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1988 to 1057. [2021-09-22 14:20:37,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1057 states, 1055 states have (on average 2.41042654028436) internal successors, (2543), 1056 states have internal predecessors, (2543), 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) [2021-09-22 14:20:37,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1057 states to 1057 states and 2543 transitions. [2021-09-22 14:20:37,950 INFO L78 Accepts]: Start accepts. Automaton has 1057 states and 2543 transitions. Word has length 36 [2021-09-22 14:20:37,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:20:37,950 INFO L470 AbstractCegarLoop]: Abstraction has 1057 states and 2543 transitions. [2021-09-22 14:20:37,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 2.0) internal successors, (72), 37 states have internal predecessors, (72), 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) [2021-09-22 14:20:37,951 INFO L276 IsEmpty]: Start isEmpty. Operand 1057 states and 2543 transitions. [2021-09-22 14:20:37,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-09-22 14:20:37,953 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:20:37,953 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:20:37,993 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-09-22 14:20:38,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-09-22 14:20:38,169 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-09-22 14:20:38,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:20:38,169 INFO L82 PathProgramCache]: Analyzing trace with hash 884789901, now seen corresponding path program 2 times [2021-09-22 14:20:38,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:20:38,169 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307686393] [2021-09-22 14:20:38,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:20:38,170 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:20:38,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:20:38,723 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:20:38,723 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:20:38,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307686393] [2021-09-22 14:20:38,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307686393] provided 0 perfect and 1 imperfect interpolant sequences [2021-09-22 14:20:38,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878799331] [2021-09-22 14:20:38,724 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-09-22 14:20:38,724 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-09-22 14:20:38,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-09-22 14:20:38,726 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-09-22 14:20:38,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-09-22 14:20:39,083 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-09-22 14:20:39,083 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-09-22 14:20:39,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 77 conjunts are in the unsatisfiable core [2021-09-22 14:20:39,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-09-22 14:20:39,116 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-09-22 14:20:39,117 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 825 treesize of output 819 [2021-09-22 14:20:39,367 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-09-22 14:20:39,397 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-09-22 14:20:39,398 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2021-09-22 14:20:39,675 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-09-22 14:20:39,676 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 31 [2021-09-22 14:20:40,070 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 36 [2021-09-22 14:20:40,152 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:20:40,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878799331] provided 0 perfect and 1 imperfect interpolant sequences [2021-09-22 14:20:40,153 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-09-22 14:20:40,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18] total 26 [2021-09-22 14:20:40,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514658579] [2021-09-22 14:20:40,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-09-22 14:20:40,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:20:40,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-09-22 14:20:40,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=671, Unknown=0, NotChecked=0, Total=756 [2021-09-22 14:20:40,155 INFO L87 Difference]: Start difference. First operand 1057 states and 2543 transitions. Second operand has 28 states, 27 states have (on average 2.037037037037037) internal successors, (55), 27 states have internal predecessors, (55), 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) [2021-09-22 14:20:41,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:20:41,552 INFO L93 Difference]: Finished difference Result 1459 states and 3357 transitions. [2021-09-22 14:20:41,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-09-22 14:20:41,552 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 2.037037037037037) internal successors, (55), 27 states have internal predecessors, (55), 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 36 [2021-09-22 14:20:41,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:20:41,558 INFO L225 Difference]: With dead ends: 1459 [2021-09-22 14:20:41,558 INFO L226 Difference]: Without dead ends: 1382 [2021-09-22 14:20:41,559 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 24 SyntacticMatches, 7 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 591 ImplicationChecksByTransitivity, 1186.1ms TimeCoverageRelationStatistics Valid=286, Invalid=1970, Unknown=0, NotChecked=0, Total=2256 [2021-09-22 14:20:41,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1382 states. [2021-09-22 14:20:41,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1382 to 1148. [2021-09-22 14:20:41,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1148 states, 1146 states have (on average 2.397905759162304) internal successors, (2748), 1147 states have internal predecessors, (2748), 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) [2021-09-22 14:20:41,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1148 states to 1148 states and 2748 transitions. [2021-09-22 14:20:41,584 INFO L78 Accepts]: Start accepts. Automaton has 1148 states and 2748 transitions. Word has length 36 [2021-09-22 14:20:41,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:20:41,585 INFO L470 AbstractCegarLoop]: Abstraction has 1148 states and 2748 transitions. [2021-09-22 14:20:41,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 2.037037037037037) internal successors, (55), 27 states have internal predecessors, (55), 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) [2021-09-22 14:20:41,585 INFO L276 IsEmpty]: Start isEmpty. Operand 1148 states and 2748 transitions. [2021-09-22 14:20:41,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-09-22 14:20:41,588 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:20:41,588 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:20:41,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-09-22 14:20:41,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-09-22 14:20:41,805 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-09-22 14:20:41,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:20:41,805 INFO L82 PathProgramCache]: Analyzing trace with hash 1136628459, now seen corresponding path program 3 times [2021-09-22 14:20:41,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:20:41,805 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059686160] [2021-09-22 14:20:41,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:20:41,806 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:20:41,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:20:42,342 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:20:42,342 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:20:42,342 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059686160] [2021-09-22 14:20:42,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059686160] provided 0 perfect and 1 imperfect interpolant sequences [2021-09-22 14:20:42,342 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1336205515] [2021-09-22 14:20:42,343 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-09-22 14:20:42,343 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-09-22 14:20:42,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-09-22 14:20:42,351 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-09-22 14:20:42,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-09-22 14:20:42,694 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-09-22 14:20:42,695 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-09-22 14:20:42,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 77 conjunts are in the unsatisfiable core [2021-09-22 14:20:42,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-09-22 14:20:42,726 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-09-22 14:20:42,727 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 3238 treesize of output 3140 [2021-09-22 14:20:43,470 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-09-22 14:20:43,534 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-09-22 14:20:43,534 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2021-09-22 14:20:43,766 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-09-22 14:20:43,767 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 31 [2021-09-22 14:20:44,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 36 [2021-09-22 14:20:44,266 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:20:44,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1336205515] provided 0 perfect and 1 imperfect interpolant sequences [2021-09-22 14:20:44,266 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-09-22 14:20:44,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18] total 26 [2021-09-22 14:20:44,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645603948] [2021-09-22 14:20:44,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-09-22 14:20:44,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:20:44,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-09-22 14:20:44,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=671, Unknown=0, NotChecked=0, Total=756 [2021-09-22 14:20:44,267 INFO L87 Difference]: Start difference. First operand 1148 states and 2748 transitions. Second operand has 28 states, 27 states have (on average 2.037037037037037) internal successors, (55), 27 states have internal predecessors, (55), 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) [2021-09-22 14:20:46,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:20:46,285 INFO L93 Difference]: Finished difference Result 1795 states and 4056 transitions. [2021-09-22 14:20:46,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-09-22 14:20:46,293 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 2.037037037037037) internal successors, (55), 27 states have internal predecessors, (55), 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 36 [2021-09-22 14:20:46,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:20:46,299 INFO L225 Difference]: With dead ends: 1795 [2021-09-22 14:20:46,299 INFO L226 Difference]: Without dead ends: 1654 [2021-09-22 14:20:46,300 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 24 SyntacticMatches, 7 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 880 ImplicationChecksByTransitivity, 1714.4ms TimeCoverageRelationStatistics Valid=439, Invalid=2867, Unknown=0, NotChecked=0, Total=3306 [2021-09-22 14:20:46,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1654 states. [2021-09-22 14:20:46,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1654 to 1135. [2021-09-22 14:20:46,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1135 states, 1133 states have (on average 2.383053839364519) internal successors, (2700), 1134 states have internal predecessors, (2700), 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) [2021-09-22 14:20:46,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1135 states to 1135 states and 2700 transitions. [2021-09-22 14:20:46,328 INFO L78 Accepts]: Start accepts. Automaton has 1135 states and 2700 transitions. Word has length 36 [2021-09-22 14:20:46,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:20:46,328 INFO L470 AbstractCegarLoop]: Abstraction has 1135 states and 2700 transitions. [2021-09-22 14:20:46,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 2.037037037037037) internal successors, (55), 27 states have internal predecessors, (55), 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) [2021-09-22 14:20:46,328 INFO L276 IsEmpty]: Start isEmpty. Operand 1135 states and 2700 transitions. [2021-09-22 14:20:46,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-09-22 14:20:46,331 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:20:46,331 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:20:46,355 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-09-22 14:20:46,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-09-22 14:20:46,550 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-09-22 14:20:46,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:20:46,551 INFO L82 PathProgramCache]: Analyzing trace with hash -768162463, now seen corresponding path program 4 times [2021-09-22 14:20:46,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:20:46,551 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537116636] [2021-09-22 14:20:46,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:20:46,551 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:20:46,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:20:47,250 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:20:47,250 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:20:47,250 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537116636] [2021-09-22 14:20:47,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537116636] provided 0 perfect and 1 imperfect interpolant sequences [2021-09-22 14:20:47,250 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724946702] [2021-09-22 14:20:47,251 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-09-22 14:20:47,251 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-09-22 14:20:47,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-09-22 14:20:47,260 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-09-22 14:20:47,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-09-22 14:20:47,659 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-09-22 14:20:47,659 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-09-22 14:20:47,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 68 conjunts are in the unsatisfiable core [2021-09-22 14:20:47,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-09-22 14:20:47,682 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-09-22 14:20:47,682 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 997 treesize of output 985 [2021-09-22 14:20:48,027 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 66 [2021-09-22 14:20:48,370 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-09-22 14:20:48,371 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 49 [2021-09-22 14:20:48,487 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-09-22 14:20:48,488 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 43 [2021-09-22 14:20:48,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 45 [2021-09-22 14:20:49,080 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:20:49,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1724946702] provided 0 perfect and 1 imperfect interpolant sequences [2021-09-22 14:20:49,080 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-09-22 14:20:49,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 19] total 43 [2021-09-22 14:20:49,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069819133] [2021-09-22 14:20:49,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2021-09-22 14:20:49,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:20:49,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-09-22 14:20:49,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=1817, Unknown=0, NotChecked=0, Total=1980 [2021-09-22 14:20:49,082 INFO L87 Difference]: Start difference. First operand 1135 states and 2700 transitions. Second operand has 45 states, 44 states have (on average 1.6363636363636365) internal successors, (72), 44 states have internal predecessors, (72), 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) [2021-09-22 14:21:06,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:21:06,919 INFO L93 Difference]: Finished difference Result 2799 states and 6124 transitions. [2021-09-22 14:21:06,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2021-09-22 14:21:06,920 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 44 states have (on average 1.6363636363636365) internal successors, (72), 44 states have internal predecessors, (72), 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 36 [2021-09-22 14:21:06,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:21:06,928 INFO L225 Difference]: With dead ends: 2799 [2021-09-22 14:21:06,928 INFO L226 Difference]: Without dead ends: 2593 [2021-09-22 14:21:06,931 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7040 ImplicationChecksByTransitivity, 16133.9ms TimeCoverageRelationStatistics Valid=2652, Invalid=20300, Unknown=0, NotChecked=0, Total=22952 [2021-09-22 14:21:06,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2593 states. [2021-09-22 14:21:06,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2593 to 943. [2021-09-22 14:21:06,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 943 states, 941 states have (on average 2.290116896918172) internal successors, (2155), 942 states have internal predecessors, (2155), 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) [2021-09-22 14:21:06,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 943 states to 943 states and 2155 transitions. [2021-09-22 14:21:06,964 INFO L78 Accepts]: Start accepts. Automaton has 943 states and 2155 transitions. Word has length 36 [2021-09-22 14:21:06,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:21:06,964 INFO L470 AbstractCegarLoop]: Abstraction has 943 states and 2155 transitions. [2021-09-22 14:21:06,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 44 states have (on average 1.6363636363636365) internal successors, (72), 44 states have internal predecessors, (72), 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) [2021-09-22 14:21:06,965 INFO L276 IsEmpty]: Start isEmpty. Operand 943 states and 2155 transitions. [2021-09-22 14:21:06,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-09-22 14:21:06,966 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:21:06,966 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:21:06,992 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-09-22 14:21:07,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-09-22 14:21:07,192 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-09-22 14:21:07,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:21:07,193 INFO L82 PathProgramCache]: Analyzing trace with hash 688948273, now seen corresponding path program 1 times [2021-09-22 14:21:07,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:21:07,193 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204697500] [2021-09-22 14:21:07,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:21:07,193 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:21:07,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:21:07,266 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 25 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-09-22 14:21:07,266 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:21:07,267 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204697500] [2021-09-22 14:21:07,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204697500] provided 0 perfect and 1 imperfect interpolant sequences [2021-09-22 14:21:07,267 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166580159] [2021-09-22 14:21:07,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:21:07,267 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-09-22 14:21:07,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-09-22 14:21:07,281 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-09-22 14:21:07,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-09-22 14:21:07,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:21:07,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 10 conjunts are in the unsatisfiable core [2021-09-22 14:21:07,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-09-22 14:21:07,815 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 25 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-09-22 14:21:07,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166580159] provided 0 perfect and 1 imperfect interpolant sequences [2021-09-22 14:21:07,815 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-09-22 14:21:07,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2021-09-22 14:21:07,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661290507] [2021-09-22 14:21:07,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-09-22 14:21:07,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:21:07,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-09-22 14:21:07,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-09-22 14:21:07,817 INFO L87 Difference]: Start difference. First operand 943 states and 2155 transitions. Second operand has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 11 states have internal predecessors, (49), 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) [2021-09-22 14:21:07,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:21:07,916 INFO L93 Difference]: Finished difference Result 1637 states and 3559 transitions. [2021-09-22 14:21:07,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-09-22 14:21:07,917 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 11 states have internal predecessors, (49), 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 38 [2021-09-22 14:21:07,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:21:07,922 INFO L225 Difference]: With dead ends: 1637 [2021-09-22 14:21:07,922 INFO L226 Difference]: Without dead ends: 1637 [2021-09-22 14:21:07,922 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 66.8ms TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2021-09-22 14:21:07,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1637 states. [2021-09-22 14:21:07,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1637 to 1017. [2021-09-22 14:21:07,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1017 states, 1015 states have (on average 2.329064039408867) internal successors, (2364), 1016 states have internal predecessors, (2364), 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) [2021-09-22 14:21:07,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1017 states to 1017 states and 2364 transitions. [2021-09-22 14:21:07,969 INFO L78 Accepts]: Start accepts. Automaton has 1017 states and 2364 transitions. Word has length 38 [2021-09-22 14:21:07,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:21:07,969 INFO L470 AbstractCegarLoop]: Abstraction has 1017 states and 2364 transitions. [2021-09-22 14:21:07,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 11 states have internal predecessors, (49), 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) [2021-09-22 14:21:07,970 INFO L276 IsEmpty]: Start isEmpty. Operand 1017 states and 2364 transitions. [2021-09-22 14:21:07,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-09-22 14:21:07,972 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:21:07,972 INFO L512 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1] [2021-09-22 14:21:07,998 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-09-22 14:21:08,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-09-22 14:21:08,185 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-09-22 14:21:08,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:21:08,185 INFO L82 PathProgramCache]: Analyzing trace with hash 1036950096, now seen corresponding path program 5 times [2021-09-22 14:21:08,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:21:08,185 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101505188] [2021-09-22 14:21:08,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:21:08,185 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:21:08,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:21:08,249 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 56 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:21:08,249 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:21:08,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101505188] [2021-09-22 14:21:08,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101505188] provided 0 perfect and 1 imperfect interpolant sequences [2021-09-22 14:21:08,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367935707] [2021-09-22 14:21:08,250 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-09-22 14:21:08,250 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-09-22 14:21:08,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-09-22 14:21:08,251 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-09-22 14:21:08,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-09-22 14:21:08,736 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-09-22 14:21:08,737 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-09-22 14:21:08,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 7 conjunts are in the unsatisfiable core [2021-09-22 14:21:08,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-09-22 14:21:08,847 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:21:08,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1367935707] provided 1 perfect and 0 imperfect interpolant sequences [2021-09-22 14:21:08,847 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-09-22 14:21:08,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 9 [2021-09-22 14:21:08,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31646479] [2021-09-22 14:21:08,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-09-22 14:21:08,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:21:08,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-09-22 14:21:08,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-09-22 14:21:08,848 INFO L87 Difference]: Start difference. First operand 1017 states and 2364 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 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) [2021-09-22 14:21:08,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:21:08,872 INFO L93 Difference]: Finished difference Result 2427 states and 5423 transitions. [2021-09-22 14:21:08,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-09-22 14:21:08,873 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 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 41 [2021-09-22 14:21:08,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:21:08,877 INFO L225 Difference]: With dead ends: 2427 [2021-09-22 14:21:08,877 INFO L226 Difference]: Without dead ends: 1507 [2021-09-22 14:21:08,878 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 21.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-09-22 14:21:08,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1507 states. [2021-09-22 14:21:08,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1507 to 1071. [2021-09-22 14:21:08,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1071 states, 1069 states have (on average 2.0626753975678205) internal successors, (2205), 1070 states have internal predecessors, (2205), 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) [2021-09-22 14:21:08,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 2205 transitions. [2021-09-22 14:21:08,923 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 2205 transitions. Word has length 41 [2021-09-22 14:21:08,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:21:08,924 INFO L470 AbstractCegarLoop]: Abstraction has 1071 states and 2205 transitions. [2021-09-22 14:21:08,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 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) [2021-09-22 14:21:08,924 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 2205 transitions. [2021-09-22 14:21:08,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-09-22 14:21:08,926 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:21:08,926 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:21:08,954 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-09-22 14:21:09,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2021-09-22 14:21:09,147 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-09-22 14:21:09,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:21:09,147 INFO L82 PathProgramCache]: Analyzing trace with hash 803083900, now seen corresponding path program 2 times [2021-09-22 14:21:09,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:21:09,147 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387017552] [2021-09-22 14:21:09,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:21:09,147 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:21:09,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:21:09,251 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 49 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-09-22 14:21:09,251 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:21:09,251 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387017552] [2021-09-22 14:21:09,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387017552] provided 0 perfect and 1 imperfect interpolant sequences [2021-09-22 14:21:09,251 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154893002] [2021-09-22 14:21:09,251 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-09-22 14:21:09,252 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-09-22 14:21:09,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-09-22 14:21:09,253 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-09-22 14:21:09,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-09-22 14:21:09,714 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-09-22 14:21:09,715 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-09-22 14:21:09,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 12 conjunts are in the unsatisfiable core [2021-09-22 14:21:09,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-09-22 14:21:09,831 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 43 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-09-22 14:21:09,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [154893002] provided 0 perfect and 1 imperfect interpolant sequences [2021-09-22 14:21:09,831 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-09-22 14:21:09,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 12 [2021-09-22 14:21:09,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033505194] [2021-09-22 14:21:09,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-09-22 14:21:09,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:21:09,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-09-22 14:21:09,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-09-22 14:21:09,832 INFO L87 Difference]: Start difference. First operand 1071 states and 2205 transitions. Second operand has 13 states, 13 states have (on average 4.0) internal successors, (52), 12 states have internal predecessors, (52), 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) [2021-09-22 14:21:09,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:21:09,961 INFO L93 Difference]: Finished difference Result 1609 states and 3242 transitions. [2021-09-22 14:21:09,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-09-22 14:21:09,961 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 12 states have internal predecessors, (52), 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 45 [2021-09-22 14:21:09,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:21:09,970 INFO L225 Difference]: With dead ends: 1609 [2021-09-22 14:21:09,974 INFO L226 Difference]: Without dead ends: 1371 [2021-09-22 14:21:09,974 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 85.7ms TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2021-09-22 14:21:09,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1371 states. [2021-09-22 14:21:09,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1371 to 1063. [2021-09-22 14:21:09,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1063 states, 1061 states have (on average 2.0254476908576815) internal successors, (2149), 1062 states have internal predecessors, (2149), 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) [2021-09-22 14:21:10,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 2149 transitions. [2021-09-22 14:21:10,001 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 2149 transitions. Word has length 45 [2021-09-22 14:21:10,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:21:10,002 INFO L470 AbstractCegarLoop]: Abstraction has 1063 states and 2149 transitions. [2021-09-22 14:21:10,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 12 states have internal predecessors, (52), 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) [2021-09-22 14:21:10,003 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 2149 transitions. [2021-09-22 14:21:10,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-09-22 14:21:10,005 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:21:10,005 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:21:10,029 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-09-22 14:21:10,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-09-22 14:21:10,221 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-09-22 14:21:10,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:21:10,221 INFO L82 PathProgramCache]: Analyzing trace with hash -870986040, now seen corresponding path program 3 times [2021-09-22 14:21:10,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:21:10,222 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987302706] [2021-09-22 14:21:10,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:21:10,222 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:21:10,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:21:10,310 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 43 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-09-22 14:21:10,310 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:21:10,311 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987302706] [2021-09-22 14:21:10,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987302706] provided 0 perfect and 1 imperfect interpolant sequences [2021-09-22 14:21:10,311 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773173119] [2021-09-22 14:21:10,311 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-09-22 14:21:10,311 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-09-22 14:21:10,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-09-22 14:21:10,312 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-09-22 14:21:10,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-09-22 14:21:10,802 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-09-22 14:21:10,803 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-09-22 14:21:10,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 12 conjunts are in the unsatisfiable core [2021-09-22 14:21:10,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-09-22 14:21:10,914 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 43 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-09-22 14:21:10,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [773173119] provided 0 perfect and 1 imperfect interpolant sequences [2021-09-22 14:21:10,915 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-09-22 14:21:10,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 12 [2021-09-22 14:21:10,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821013010] [2021-09-22 14:21:10,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-09-22 14:21:10,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:21:10,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-09-22 14:21:10,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-09-22 14:21:10,916 INFO L87 Difference]: Start difference. First operand 1063 states and 2149 transitions. Second operand has 13 states, 13 states have (on average 4.0) internal successors, (52), 12 states have internal predecessors, (52), 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) [2021-09-22 14:21:11,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:21:11,026 INFO L93 Difference]: Finished difference Result 1545 states and 3053 transitions. [2021-09-22 14:21:11,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-09-22 14:21:11,026 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 12 states have internal predecessors, (52), 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 45 [2021-09-22 14:21:11,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:21:11,029 INFO L225 Difference]: With dead ends: 1545 [2021-09-22 14:21:11,029 INFO L226 Difference]: Without dead ends: 1513 [2021-09-22 14:21:11,030 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 69.4ms TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2021-09-22 14:21:11,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1513 states. [2021-09-22 14:21:11,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1513 to 987. [2021-09-22 14:21:11,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 987 states, 985 states have (on average 1.984771573604061) internal successors, (1955), 986 states have internal predecessors, (1955), 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) [2021-09-22 14:21:11,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 987 states to 987 states and 1955 transitions. [2021-09-22 14:21:11,050 INFO L78 Accepts]: Start accepts. Automaton has 987 states and 1955 transitions. Word has length 45 [2021-09-22 14:21:11,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:21:11,051 INFO L470 AbstractCegarLoop]: Abstraction has 987 states and 1955 transitions. [2021-09-22 14:21:11,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 12 states have internal predecessors, (52), 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) [2021-09-22 14:21:11,051 INFO L276 IsEmpty]: Start isEmpty. Operand 987 states and 1955 transitions. [2021-09-22 14:21:11,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-09-22 14:21:11,053 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:21:11,053 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:21:11,085 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-09-22 14:21:11,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-09-22 14:21:11,285 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-09-22 14:21:11,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:21:11,285 INFO L82 PathProgramCache]: Analyzing trace with hash 280658248, now seen corresponding path program 4 times [2021-09-22 14:21:11,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:21:11,285 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973982026] [2021-09-22 14:21:11,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:21:11,286 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:21:11,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:21:11,387 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 48 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-09-22 14:21:11,388 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:21:11,388 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973982026] [2021-09-22 14:21:11,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973982026] provided 0 perfect and 1 imperfect interpolant sequences [2021-09-22 14:21:11,388 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308994667] [2021-09-22 14:21:11,388 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-09-22 14:21:11,388 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-09-22 14:21:11,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-09-22 14:21:11,393 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-09-22 14:21:11,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-09-22 14:21:11,903 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-09-22 14:21:11,903 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-09-22 14:21:11,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 12 conjunts are in the unsatisfiable core [2021-09-22 14:21:11,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-09-22 14:21:12,019 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 48 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-09-22 14:21:12,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [308994667] provided 0 perfect and 1 imperfect interpolant sequences [2021-09-22 14:21:12,019 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-09-22 14:21:12,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2021-09-22 14:21:12,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165810366] [2021-09-22 14:21:12,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-09-22 14:21:12,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:21:12,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-09-22 14:21:12,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-09-22 14:21:12,020 INFO L87 Difference]: Start difference. First operand 987 states and 1955 transitions. Second operand has 14 states, 14 states have (on average 4.0) internal successors, (56), 13 states have internal predecessors, (56), 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) [2021-09-22 14:21:12,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:21:12,146 INFO L93 Difference]: Finished difference Result 1629 states and 3152 transitions. [2021-09-22 14:21:12,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-09-22 14:21:12,146 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.0) internal successors, (56), 13 states have internal predecessors, (56), 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 45 [2021-09-22 14:21:12,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:21:12,149 INFO L225 Difference]: With dead ends: 1629 [2021-09-22 14:21:12,149 INFO L226 Difference]: Without dead ends: 1625 [2021-09-22 14:21:12,149 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 94.5ms TimeCoverageRelationStatistics Valid=133, Invalid=373, Unknown=0, NotChecked=0, Total=506 [2021-09-22 14:21:12,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1625 states. [2021-09-22 14:21:12,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1625 to 987. [2021-09-22 14:21:12,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 987 states, 985 states have (on average 1.984771573604061) internal successors, (1955), 986 states have internal predecessors, (1955), 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) [2021-09-22 14:21:12,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 987 states to 987 states and 1955 transitions. [2021-09-22 14:21:12,170 INFO L78 Accepts]: Start accepts. Automaton has 987 states and 1955 transitions. Word has length 45 [2021-09-22 14:21:12,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:21:12,171 INFO L470 AbstractCegarLoop]: Abstraction has 987 states and 1955 transitions. [2021-09-22 14:21:12,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.0) internal successors, (56), 13 states have internal predecessors, (56), 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) [2021-09-22 14:21:12,171 INFO L276 IsEmpty]: Start isEmpty. Operand 987 states and 1955 transitions. [2021-09-22 14:21:12,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-09-22 14:21:12,173 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:21:12,173 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:21:12,196 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-09-22 14:21:12,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-09-22 14:21:12,389 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-09-22 14:21:12,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:21:12,389 INFO L82 PathProgramCache]: Analyzing trace with hash -317231720, now seen corresponding path program 5 times [2021-09-22 14:21:12,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:21:12,389 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879667041] [2021-09-22 14:21:12,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:21:12,390 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:21:12,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:21:13,138 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:21:13,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:21:13,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879667041] [2021-09-22 14:21:13,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879667041] provided 0 perfect and 1 imperfect interpolant sequences [2021-09-22 14:21:13,139 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772330257] [2021-09-22 14:21:13,139 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-09-22 14:21:13,139 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-09-22 14:21:13,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-09-22 14:21:13,140 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-09-22 14:21:13,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-09-22 14:21:13,622 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-09-22 14:21:13,622 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-09-22 14:21:13,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 93 conjunts are in the unsatisfiable core [2021-09-22 14:21:13,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-09-22 14:21:13,742 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-09-22 14:21:13,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-09-22 14:21:13,934 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2021-09-22 14:21:14,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-09-22 14:21:14,081 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2021-09-22 14:21:14,453 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 36 [2021-09-22 14:21:14,522 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 11 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:21:14,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1772330257] provided 0 perfect and 1 imperfect interpolant sequences [2021-09-22 14:21:14,522 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-09-22 14:21:14,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 25] total 31 [2021-09-22 14:21:14,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138389644] [2021-09-22 14:21:14,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-09-22 14:21:14,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:21:14,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-09-22 14:21:14,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=941, Unknown=0, NotChecked=0, Total=1056 [2021-09-22 14:21:14,524 INFO L87 Difference]: Start difference. First operand 987 states and 1955 transitions. Second operand has 33 states, 32 states have (on average 2.09375) internal successors, (67), 32 states have internal predecessors, (67), 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) [2021-09-22 14:21:17,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:21:17,258 INFO L93 Difference]: Finished difference Result 1775 states and 3524 transitions. [2021-09-22 14:21:17,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-09-22 14:21:17,259 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 2.09375) internal successors, (67), 32 states have internal predecessors, (67), 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 51 [2021-09-22 14:21:17,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:21:17,261 INFO L225 Difference]: With dead ends: 1775 [2021-09-22 14:21:17,261 INFO L226 Difference]: Without dead ends: 1256 [2021-09-22 14:21:17,262 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 40 SyntacticMatches, 8 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1543 ImplicationChecksByTransitivity, 2219.5ms TimeCoverageRelationStatistics Valid=771, Invalid=4779, Unknown=0, NotChecked=0, Total=5550 [2021-09-22 14:21:17,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1256 states. [2021-09-22 14:21:17,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1256 to 1086. [2021-09-22 14:21:17,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1086 states, 1084 states have (on average 1.9640221402214022) internal successors, (2129), 1085 states have internal predecessors, (2129), 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) [2021-09-22 14:21:17,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1086 states to 1086 states and 2129 transitions. [2021-09-22 14:21:17,280 INFO L78 Accepts]: Start accepts. Automaton has 1086 states and 2129 transitions. Word has length 51 [2021-09-22 14:21:17,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:21:17,281 INFO L470 AbstractCegarLoop]: Abstraction has 1086 states and 2129 transitions. [2021-09-22 14:21:17,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 2.09375) internal successors, (67), 32 states have internal predecessors, (67), 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) [2021-09-22 14:21:17,281 INFO L276 IsEmpty]: Start isEmpty. Operand 1086 states and 2129 transitions. [2021-09-22 14:21:17,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-09-22 14:21:17,284 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:21:17,284 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:21:17,308 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-09-22 14:21:17,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-09-22 14:21:17,497 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-09-22 14:21:17,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:21:17,498 INFO L82 PathProgramCache]: Analyzing trace with hash 1407807506, now seen corresponding path program 6 times [2021-09-22 14:21:17,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:21:17,498 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39376806] [2021-09-22 14:21:17,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:21:17,498 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:21:17,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:21:18,283 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:21:18,284 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:21:18,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39376806] [2021-09-22 14:21:18,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39376806] provided 0 perfect and 1 imperfect interpolant sequences [2021-09-22 14:21:18,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878749910] [2021-09-22 14:21:18,284 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-09-22 14:21:18,284 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-09-22 14:21:18,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-09-22 14:21:18,285 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-09-22 14:21:18,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-09-22 14:21:18,914 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-09-22 14:21:18,914 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-09-22 14:21:18,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 96 conjunts are in the unsatisfiable core [2021-09-22 14:21:18,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-09-22 14:21:18,946 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-09-22 14:21:18,946 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 682 treesize of output 662 [2021-09-22 14:21:19,254 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-09-22 14:21:19,278 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-09-22 14:21:19,278 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2021-09-22 14:21:19,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-09-22 14:21:19,542 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2021-09-22 14:21:19,799 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-09-22 14:21:19,799 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 31 [2021-09-22 14:21:20,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 36 [2021-09-22 14:21:20,445 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:21:20,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878749910] provided 0 perfect and 1 imperfect interpolant sequences [2021-09-22 14:21:20,446 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-09-22 14:21:20,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 23] total 36 [2021-09-22 14:21:20,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557706519] [2021-09-22 14:21:20,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-09-22 14:21:20,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:21:20,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-09-22 14:21:20,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1268, Unknown=0, NotChecked=0, Total=1406 [2021-09-22 14:21:20,447 INFO L87 Difference]: Start difference. First operand 1086 states and 2129 transitions. Second operand has 38 states, 37 states have (on average 2.1621621621621623) internal successors, (80), 37 states have internal predecessors, (80), 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) [2021-09-22 14:21:22,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:21:22,539 INFO L93 Difference]: Finished difference Result 1951 states and 3835 transitions. [2021-09-22 14:21:22,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-09-22 14:21:22,540 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 2.1621621621621623) internal successors, (80), 37 states have internal predecessors, (80), 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 51 [2021-09-22 14:21:22,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:21:22,542 INFO L225 Difference]: With dead ends: 1951 [2021-09-22 14:21:22,542 INFO L226 Difference]: Without dead ends: 1600 [2021-09-22 14:21:22,543 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 37 SyntacticMatches, 7 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1073 ImplicationChecksByTransitivity, 1760.6ms TimeCoverageRelationStatistics Valid=442, Invalid=3590, Unknown=0, NotChecked=0, Total=4032 [2021-09-22 14:21:22,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1600 states. [2021-09-22 14:21:22,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1600 to 1318. [2021-09-22 14:21:22,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1318 states, 1316 states have (on average 1.9202127659574468) internal successors, (2527), 1317 states have internal predecessors, (2527), 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) [2021-09-22 14:21:22,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1318 states to 1318 states and 2527 transitions. [2021-09-22 14:21:22,567 INFO L78 Accepts]: Start accepts. Automaton has 1318 states and 2527 transitions. Word has length 51 [2021-09-22 14:21:22,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:21:22,567 INFO L470 AbstractCegarLoop]: Abstraction has 1318 states and 2527 transitions. [2021-09-22 14:21:22,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 2.1621621621621623) internal successors, (80), 37 states have internal predecessors, (80), 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) [2021-09-22 14:21:22,567 INFO L276 IsEmpty]: Start isEmpty. Operand 1318 states and 2527 transitions. [2021-09-22 14:21:22,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-09-22 14:21:22,570 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:21:22,570 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:21:22,599 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-09-22 14:21:22,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-09-22 14:21:22,785 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-09-22 14:21:22,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:21:22,785 INFO L82 PathProgramCache]: Analyzing trace with hash 1520314356, now seen corresponding path program 7 times [2021-09-22 14:21:22,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:21:22,785 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266368097] [2021-09-22 14:21:22,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:21:22,785 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:21:22,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:21:23,607 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:21:23,607 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:21:23,607 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266368097] [2021-09-22 14:21:23,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266368097] provided 0 perfect and 1 imperfect interpolant sequences [2021-09-22 14:21:23,607 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449570652] [2021-09-22 14:21:23,608 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-09-22 14:21:23,608 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-09-22 14:21:23,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-09-22 14:21:23,608 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-09-22 14:21:23,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-09-22 14:21:24,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:21:24,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 106 conjunts are in the unsatisfiable core [2021-09-22 14:21:24,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-09-22 14:21:24,255 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-09-22 14:21:24,256 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 190 treesize of output 184 [2021-09-22 14:21:24,529 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-09-22 14:21:24,604 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-09-22 14:21:24,605 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2021-09-22 14:21:24,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-09-22 14:21:24,793 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2021-09-22 14:21:25,015 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-09-22 14:21:25,016 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 31 [2021-09-22 14:21:25,602 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 36 [2021-09-22 14:21:25,673 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:21:25,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1449570652] provided 0 perfect and 1 imperfect interpolant sequences [2021-09-22 14:21:25,674 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-09-22 14:21:25,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 26] total 37 [2021-09-22 14:21:25,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921015534] [2021-09-22 14:21:25,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-09-22 14:21:25,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:21:25,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-09-22 14:21:25,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=1339, Unknown=0, NotChecked=0, Total=1482 [2021-09-22 14:21:25,676 INFO L87 Difference]: Start difference. First operand 1318 states and 2527 transitions. Second operand has 39 states, 38 states have (on average 2.0789473684210527) internal successors, (79), 38 states have internal predecessors, (79), 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) [2021-09-22 14:21:28,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:21:28,839 INFO L93 Difference]: Finished difference Result 2072 states and 3979 transitions. [2021-09-22 14:21:28,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-09-22 14:21:28,840 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 2.0789473684210527) internal successors, (79), 38 states have internal predecessors, (79), 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 51 [2021-09-22 14:21:28,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:21:28,842 INFO L225 Difference]: With dead ends: 2072 [2021-09-22 14:21:28,842 INFO L226 Difference]: Without dead ends: 1809 [2021-09-22 14:21:28,843 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 36 SyntacticMatches, 7 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1875 ImplicationChecksByTransitivity, 2625.3ms TimeCoverageRelationStatistics Valid=735, Invalid=5907, Unknown=0, NotChecked=0, Total=6642 [2021-09-22 14:21:28,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1809 states. [2021-09-22 14:21:28,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1809 to 1379. [2021-09-22 14:21:28,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1379 states, 1377 states have (on average 1.9208424110384894) internal successors, (2645), 1378 states have internal predecessors, (2645), 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) [2021-09-22 14:21:28,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1379 states to 1379 states and 2645 transitions. [2021-09-22 14:21:28,867 INFO L78 Accepts]: Start accepts. Automaton has 1379 states and 2645 transitions. Word has length 51 [2021-09-22 14:21:28,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:21:28,868 INFO L470 AbstractCegarLoop]: Abstraction has 1379 states and 2645 transitions. [2021-09-22 14:21:28,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 2.0789473684210527) internal successors, (79), 38 states have internal predecessors, (79), 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) [2021-09-22 14:21:28,868 INFO L276 IsEmpty]: Start isEmpty. Operand 1379 states and 2645 transitions. [2021-09-22 14:21:28,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-09-22 14:21:28,870 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:21:28,870 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:21:28,907 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-09-22 14:21:29,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-09-22 14:21:29,085 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-09-22 14:21:29,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:21:29,085 INFO L82 PathProgramCache]: Analyzing trace with hash -1812159208, now seen corresponding path program 8 times [2021-09-22 14:21:29,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:21:29,085 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626721497] [2021-09-22 14:21:29,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:21:29,085 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:21:29,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:21:29,940 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:21:29,940 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:21:29,940 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626721497] [2021-09-22 14:21:29,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626721497] provided 0 perfect and 1 imperfect interpolant sequences [2021-09-22 14:21:29,940 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1297488364] [2021-09-22 14:21:29,940 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-09-22 14:21:29,940 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-09-22 14:21:29,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-09-22 14:21:29,942 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-09-22 14:21:29,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-09-22 14:21:30,644 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-09-22 14:21:30,645 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-09-22 14:21:30,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 96 conjunts are in the unsatisfiable core [2021-09-22 14:21:30,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-09-22 14:21:30,665 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-09-22 14:21:30,665 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 4509 treesize of output 4235 [2021-09-22 14:21:31,172 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-09-22 14:21:31,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-09-22 14:21:31,338 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2021-09-22 14:21:31,396 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-09-22 14:21:31,396 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2021-09-22 14:21:31,610 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-09-22 14:21:31,610 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 31 [2021-09-22 14:21:32,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 36 [2021-09-22 14:21:32,214 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:21:32,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1297488364] provided 0 perfect and 1 imperfect interpolant sequences [2021-09-22 14:21:32,215 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-09-22 14:21:32,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 24] total 37 [2021-09-22 14:21:32,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396827328] [2021-09-22 14:21:32,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-09-22 14:21:32,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:21:32,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-09-22 14:21:32,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=1337, Unknown=0, NotChecked=0, Total=1482 [2021-09-22 14:21:32,216 INFO L87 Difference]: Start difference. First operand 1379 states and 2645 transitions. Second operand has 39 states, 38 states have (on average 2.1052631578947367) internal successors, (80), 38 states have internal predecessors, (80), 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) [2021-09-22 14:21:35,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:21:35,030 INFO L93 Difference]: Finished difference Result 2152 states and 4139 transitions. [2021-09-22 14:21:35,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-09-22 14:21:35,031 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 2.1052631578947367) internal successors, (80), 38 states have internal predecessors, (80), 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 51 [2021-09-22 14:21:35,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:21:35,033 INFO L225 Difference]: With dead ends: 2152 [2021-09-22 14:21:35,033 INFO L226 Difference]: Without dead ends: 1515 [2021-09-22 14:21:35,034 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 36 SyntacticMatches, 7 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1563 ImplicationChecksByTransitivity, 2246.6ms TimeCoverageRelationStatistics Valid=628, Invalid=5072, Unknown=0, NotChecked=0, Total=5700 [2021-09-22 14:21:35,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1515 states. [2021-09-22 14:21:35,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1515 to 1088. [2021-09-22 14:21:35,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1088 states, 1087 states have (on average 1.9181232750689972) internal successors, (2085), 1087 states have internal predecessors, (2085), 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) [2021-09-22 14:21:35,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1088 states to 1088 states and 2085 transitions. [2021-09-22 14:21:35,053 INFO L78 Accepts]: Start accepts. Automaton has 1088 states and 2085 transitions. Word has length 51 [2021-09-22 14:21:35,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:21:35,054 INFO L470 AbstractCegarLoop]: Abstraction has 1088 states and 2085 transitions. [2021-09-22 14:21:35,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 2.1052631578947367) internal successors, (80), 38 states have internal predecessors, (80), 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) [2021-09-22 14:21:35,054 INFO L276 IsEmpty]: Start isEmpty. Operand 1088 states and 2085 transitions. [2021-09-22 14:21:35,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-09-22 14:21:35,056 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:21:35,056 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:21:35,079 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-09-22 14:21:35,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-09-22 14:21:35,260 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-09-22 14:21:35,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:21:35,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1890386318, now seen corresponding path program 9 times [2021-09-22 14:21:35,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:21:35,261 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301192675] [2021-09-22 14:21:35,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:21:35,261 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:21:35,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:21:36,242 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 2 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:21:36,242 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:21:36,242 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301192675] [2021-09-22 14:21:36,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301192675] provided 0 perfect and 1 imperfect interpolant sequences [2021-09-22 14:21:36,243 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789668260] [2021-09-22 14:21:36,243 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-09-22 14:21:36,243 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-09-22 14:21:36,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-09-22 14:21:36,244 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-09-22 14:21:36,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-09-22 14:21:37,075 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-09-22 14:21:37,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-09-22 14:21:37,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 92 conjunts are in the unsatisfiable core [2021-09-22 14:21:37,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-09-22 14:21:37,098 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-09-22 14:21:37,098 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 339 treesize of output 325 [2021-09-22 14:21:37,482 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 66 [2021-09-22 14:21:37,851 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-09-22 14:21:37,851 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 44 [2021-09-22 14:21:38,208 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-09-22 14:21:38,209 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 44 [2021-09-22 14:21:38,355 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-09-22 14:21:38,355 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 38 [2021-09-22 14:21:39,076 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 36 [2021-09-22 14:21:39,153 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:21:39,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789668260] provided 0 perfect and 1 imperfect interpolant sequences [2021-09-22 14:21:39,154 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-09-22 14:21:39,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 26] total 53 [2021-09-22 14:21:39,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823527026] [2021-09-22 14:21:39,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2021-09-22 14:21:39,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:21:39,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-09-22 14:21:39,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=2710, Unknown=0, NotChecked=0, Total=2970 [2021-09-22 14:21:39,155 INFO L87 Difference]: Start difference. First operand 1088 states and 2085 transitions. Second operand has 55 states, 54 states have (on average 1.8148148148148149) internal successors, (98), 54 states have internal predecessors, (98), 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) [2021-09-22 14:21:45,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:21:45,621 INFO L93 Difference]: Finished difference Result 1774 states and 3408 transitions. [2021-09-22 14:21:45,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-09-22 14:21:45,621 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 54 states have (on average 1.8148148148148149) internal successors, (98), 54 states have internal predecessors, (98), 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 51 [2021-09-22 14:21:45,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:21:45,623 INFO L225 Difference]: With dead ends: 1774 [2021-09-22 14:21:45,623 INFO L226 Difference]: Without dead ends: 922 [2021-09-22 14:21:45,624 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 27 SyntacticMatches, 3 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4109 ImplicationChecksByTransitivity, 5532.0ms TimeCoverageRelationStatistics Valid=1587, Invalid=12693, Unknown=0, NotChecked=0, Total=14280 [2021-09-22 14:21:45,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 922 states. [2021-09-22 14:21:45,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 922 to 534. [2021-09-22 14:21:45,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 533 states have (on average 1.9924953095684803) internal successors, (1062), 533 states have internal predecessors, (1062), 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) [2021-09-22 14:21:45,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 1062 transitions. [2021-09-22 14:21:45,632 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 1062 transitions. Word has length 51 [2021-09-22 14:21:45,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:21:45,633 INFO L470 AbstractCegarLoop]: Abstraction has 534 states and 1062 transitions. [2021-09-22 14:21:45,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 54 states have (on average 1.8148148148148149) internal successors, (98), 54 states have internal predecessors, (98), 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) [2021-09-22 14:21:45,633 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 1062 transitions. [2021-09-22 14:21:45,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-09-22 14:21:45,634 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:21:45,634 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:21:45,659 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-09-22 14:21:45,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-09-22 14:21:45,849 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-09-22 14:21:45,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:21:45,849 INFO L82 PathProgramCache]: Analyzing trace with hash -79843871, now seen corresponding path program 10 times [2021-09-22 14:21:45,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:21:45,849 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496041441] [2021-09-22 14:21:45,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:21:45,850 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:21:45,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:21:46,653 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:21:46,653 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:21:46,654 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496041441] [2021-09-22 14:21:46,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496041441] provided 0 perfect and 1 imperfect interpolant sequences [2021-09-22 14:21:46,654 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893132425] [2021-09-22 14:21:46,654 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-09-22 14:21:46,654 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-09-22 14:21:46,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-09-22 14:21:46,657 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-09-22 14:21:46,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-09-22 14:21:47,540 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-09-22 14:21:47,540 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-09-22 14:21:47,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 94 conjunts are in the unsatisfiable core [2021-09-22 14:21:47,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-09-22 14:21:47,719 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-09-22 14:21:47,931 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-09-22 14:21:47,931 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 31 [2021-09-22 14:21:48,129 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-09-22 14:21:48,129 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 31 [2021-09-22 14:21:48,530 INFO L354 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2021-09-22 14:21:48,530 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 41 [2021-09-22 14:21:48,582 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:21:48,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [893132425] provided 0 perfect and 1 imperfect interpolant sequences [2021-09-22 14:21:48,583 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-09-22 14:21:48,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25] total 33 [2021-09-22 14:21:48,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904320755] [2021-09-22 14:21:48,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-09-22 14:21:48,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:21:48,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-09-22 14:21:48,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=1102, Unknown=0, NotChecked=0, Total=1190 [2021-09-22 14:21:48,584 INFO L87 Difference]: Start difference. First operand 534 states and 1062 transitions. Second operand has 35 states, 34 states have (on average 2.1470588235294117) internal successors, (73), 34 states have internal predecessors, (73), 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) [2021-09-22 14:21:51,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:21:51,007 INFO L93 Difference]: Finished difference Result 1109 states and 2200 transitions. [2021-09-22 14:21:51,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-09-22 14:21:51,007 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 2.1470588235294117) internal successors, (73), 34 states have internal predecessors, (73), 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 58 [2021-09-22 14:21:51,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:21:51,009 INFO L225 Difference]: With dead ends: 1109 [2021-09-22 14:21:51,009 INFO L226 Difference]: Without dead ends: 1109 [2021-09-22 14:21:51,010 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 47 SyntacticMatches, 7 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 843 ImplicationChecksByTransitivity, 1603.1ms TimeCoverageRelationStatistics Valid=320, Invalid=3586, Unknown=0, NotChecked=0, Total=3906 [2021-09-22 14:21:51,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1109 states. [2021-09-22 14:21:51,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1109 to 763. [2021-09-22 14:21:51,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 763 states, 762 states have (on average 1.973753280839895) internal successors, (1504), 762 states have internal predecessors, (1504), 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) [2021-09-22 14:21:51,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 763 states to 763 states and 1504 transitions. [2021-09-22 14:21:51,021 INFO L78 Accepts]: Start accepts. Automaton has 763 states and 1504 transitions. Word has length 58 [2021-09-22 14:21:51,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:21:51,021 INFO L470 AbstractCegarLoop]: Abstraction has 763 states and 1504 transitions. [2021-09-22 14:21:51,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 2.1470588235294117) internal successors, (73), 34 states have internal predecessors, (73), 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) [2021-09-22 14:21:51,021 INFO L276 IsEmpty]: Start isEmpty. Operand 763 states and 1504 transitions. [2021-09-22 14:21:51,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-09-22 14:21:51,023 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:21:51,023 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:21:51,044 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-09-22 14:21:51,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-09-22 14:21:51,224 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-09-22 14:21:51,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:21:51,224 INFO L82 PathProgramCache]: Analyzing trace with hash 54414975, now seen corresponding path program 11 times [2021-09-22 14:21:51,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:21:51,224 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121796553] [2021-09-22 14:21:51,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:21:51,225 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:21:51,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:21:52,101 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:21:52,101 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:21:52,101 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121796553] [2021-09-22 14:21:52,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121796553] provided 0 perfect and 1 imperfect interpolant sequences [2021-09-22 14:21:52,102 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858196667] [2021-09-22 14:21:52,102 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-09-22 14:21:52,102 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-09-22 14:21:52,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-09-22 14:21:52,103 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-09-22 14:21:52,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-09-22 14:21:53,093 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-09-22 14:21:53,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-09-22 14:21:53,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 103 conjunts are in the unsatisfiable core [2021-09-22 14:21:53,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-09-22 14:21:53,114 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-09-22 14:21:53,114 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 581 treesize of output 557 [2021-09-22 14:21:53,452 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-09-22 14:21:53,483 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-09-22 14:21:53,483 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2021-09-22 14:21:53,722 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-09-22 14:21:53,723 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 31 [2021-09-22 14:21:53,927 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-09-22 14:21:53,927 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 31 [2021-09-22 14:21:54,335 INFO L354 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2021-09-22 14:21:54,336 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 41 [2021-09-22 14:21:54,398 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:21:54,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [858196667] provided 0 perfect and 1 imperfect interpolant sequences [2021-09-22 14:21:54,398 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-09-22 14:21:54,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26] total 37 [2021-09-22 14:21:54,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381233574] [2021-09-22 14:21:54,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-09-22 14:21:54,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:21:54,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-09-22 14:21:54,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=1382, Unknown=0, NotChecked=0, Total=1482 [2021-09-22 14:21:54,399 INFO L87 Difference]: Start difference. First operand 763 states and 1504 transitions. Second operand has 39 states, 38 states have (on average 2.263157894736842) internal successors, (86), 38 states have internal predecessors, (86), 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) [2021-09-22 14:21:56,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:21:56,579 INFO L93 Difference]: Finished difference Result 1550 states and 3074 transitions. [2021-09-22 14:21:56,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-09-22 14:21:56,579 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 2.263157894736842) internal successors, (86), 38 states have internal predecessors, (86), 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 58 [2021-09-22 14:21:56,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:21:56,582 INFO L225 Difference]: With dead ends: 1550 [2021-09-22 14:21:56,583 INFO L226 Difference]: Without dead ends: 1550 [2021-09-22 14:21:56,584 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 45 SyntacticMatches, 6 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 710 ImplicationChecksByTransitivity, 1631.1ms TimeCoverageRelationStatistics Valid=286, Invalid=3620, Unknown=0, NotChecked=0, Total=3906 [2021-09-22 14:21:56,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1550 states. [2021-09-22 14:21:56,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1550 to 773. [2021-09-22 14:21:56,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 773 states, 772 states have (on average 1.9766839378238341) internal successors, (1526), 772 states have internal predecessors, (1526), 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) [2021-09-22 14:21:56,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 773 states to 773 states and 1526 transitions. [2021-09-22 14:21:56,602 INFO L78 Accepts]: Start accepts. Automaton has 773 states and 1526 transitions. Word has length 58 [2021-09-22 14:21:56,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:21:56,602 INFO L470 AbstractCegarLoop]: Abstraction has 773 states and 1526 transitions. [2021-09-22 14:21:56,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 2.263157894736842) internal successors, (86), 38 states have internal predecessors, (86), 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) [2021-09-22 14:21:56,602 INFO L276 IsEmpty]: Start isEmpty. Operand 773 states and 1526 transitions. [2021-09-22 14:21:56,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-09-22 14:21:56,604 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:21:56,604 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:21:56,647 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-09-22 14:21:56,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-09-22 14:21:56,821 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-09-22 14:21:56,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:21:56,821 INFO L82 PathProgramCache]: Analyzing trace with hash 166921825, now seen corresponding path program 12 times [2021-09-22 14:21:56,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:21:56,821 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209542828] [2021-09-22 14:21:56,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:21:56,821 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:21:56,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:21:57,681 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:21:57,681 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:21:57,681 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209542828] [2021-09-22 14:21:57,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209542828] provided 0 perfect and 1 imperfect interpolant sequences [2021-09-22 14:21:57,682 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328134968] [2021-09-22 14:21:57,682 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-09-22 14:21:57,682 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-09-22 14:21:57,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-09-22 14:21:57,683 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-09-22 14:21:57,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-09-22 14:21:58,785 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-09-22 14:21:58,785 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-09-22 14:21:58,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 95 conjunts are in the unsatisfiable core [2021-09-22 14:21:58,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-09-22 14:21:59,123 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 66 [2021-09-22 14:21:59,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-09-22 14:21:59,318 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 36 [2021-09-22 14:21:59,534 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-09-22 14:21:59,534 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 31 [2021-09-22 14:21:59,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-09-22 14:21:59,719 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2021-09-22 14:22:00,133 INFO L354 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2021-09-22 14:22:00,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 41 [2021-09-22 14:22:00,203 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:22:00,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1328134968] provided 0 perfect and 1 imperfect interpolant sequences [2021-09-22 14:22:00,203 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-09-22 14:22:00,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 25] total 40 [2021-09-22 14:22:00,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282616987] [2021-09-22 14:22:00,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2021-09-22 14:22:00,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:22:00,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-09-22 14:22:00,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=1620, Unknown=0, NotChecked=0, Total=1722 [2021-09-22 14:22:00,205 INFO L87 Difference]: Start difference. First operand 773 states and 1526 transitions. Second operand has 42 states, 41 states have (on average 2.1463414634146343) internal successors, (88), 41 states have internal predecessors, (88), 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) [2021-09-22 14:22:04,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:22:04,052 INFO L93 Difference]: Finished difference Result 1449 states and 2876 transitions. [2021-09-22 14:22:04,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-09-22 14:22:04,052 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 2.1463414634146343) internal successors, (88), 41 states have internal predecessors, (88), 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 58 [2021-09-22 14:22:04,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:22:04,055 INFO L225 Difference]: With dead ends: 1449 [2021-09-22 14:22:04,055 INFO L226 Difference]: Without dead ends: 1449 [2021-09-22 14:22:04,056 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 44 SyntacticMatches, 4 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1321 ImplicationChecksByTransitivity, 2980.6ms TimeCoverageRelationStatistics Valid=485, Invalid=5995, Unknown=0, NotChecked=0, Total=6480 [2021-09-22 14:22:04,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1449 states. [2021-09-22 14:22:04,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1449 to 704. [2021-09-22 14:22:04,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 704 states, 703 states have (on average 1.9786628733997156) internal successors, (1391), 703 states have internal predecessors, (1391), 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) [2021-09-22 14:22:04,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 1391 transitions. [2021-09-22 14:22:04,069 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 1391 transitions. Word has length 58 [2021-09-22 14:22:04,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:22:04,069 INFO L470 AbstractCegarLoop]: Abstraction has 704 states and 1391 transitions. [2021-09-22 14:22:04,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 2.1463414634146343) internal successors, (88), 41 states have internal predecessors, (88), 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) [2021-09-22 14:22:04,069 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 1391 transitions. [2021-09-22 14:22:04,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-09-22 14:22:04,070 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:22:04,070 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:22:04,091 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2021-09-22 14:22:04,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-09-22 14:22:04,273 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-09-22 14:22:04,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:22:04,273 INFO L82 PathProgramCache]: Analyzing trace with hash 1129415557, now seen corresponding path program 13 times [2021-09-22 14:22:04,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:22:04,273 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022893596] [2021-09-22 14:22:04,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:22:04,273 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:22:04,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:22:05,234 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:22:05,234 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:22:05,234 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022893596] [2021-09-22 14:22:05,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022893596] provided 0 perfect and 1 imperfect interpolant sequences [2021-09-22 14:22:05,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275863739] [2021-09-22 14:22:05,235 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-09-22 14:22:05,235 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-09-22 14:22:05,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-09-22 14:22:05,239 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-09-22 14:22:05,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-09-22 14:22:06,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:22:06,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 94 conjunts are in the unsatisfiable core [2021-09-22 14:22:06,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-09-22 14:22:06,714 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 66 [2021-09-22 14:22:07,095 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-09-22 14:22:07,096 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 46 [2021-09-22 14:22:07,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-09-22 14:22:07,243 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 36 [2021-09-22 14:22:07,494 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-09-22 14:22:07,494 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 31 [2021-09-22 14:22:07,918 INFO L354 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2021-09-22 14:22:07,919 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 41 [2021-09-22 14:22:07,982 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:22:07,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [275863739] provided 0 perfect and 1 imperfect interpolant sequences [2021-09-22 14:22:07,983 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-09-22 14:22:07,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27] total 45 [2021-09-22 14:22:07,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808579302] [2021-09-22 14:22:07,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2021-09-22 14:22:07,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:22:07,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-09-22 14:22:07,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=2041, Unknown=0, NotChecked=0, Total=2162 [2021-09-22 14:22:07,985 INFO L87 Difference]: Start difference. First operand 704 states and 1391 transitions. Second operand has 47 states, 46 states have (on average 2.0652173913043477) internal successors, (95), 46 states have internal predecessors, (95), 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) [2021-09-22 14:22:12,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:22:12,091 INFO L93 Difference]: Finished difference Result 1153 states and 2303 transitions. [2021-09-22 14:22:12,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-09-22 14:22:12,092 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 2.0652173913043477) internal successors, (95), 46 states have internal predecessors, (95), 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 58 [2021-09-22 14:22:12,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:22:12,095 INFO L225 Difference]: With dead ends: 1153 [2021-09-22 14:22:12,095 INFO L226 Difference]: Without dead ends: 1153 [2021-09-22 14:22:12,096 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1517 ImplicationChecksByTransitivity, 3219.2ms TimeCoverageRelationStatistics Valid=498, Invalid=6474, Unknown=0, NotChecked=0, Total=6972 [2021-09-22 14:22:12,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1153 states. [2021-09-22 14:22:12,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1153 to 732. [2021-09-22 14:22:12,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 732 states, 731 states have (on average 2.0259917920656636) internal successors, (1481), 731 states have internal predecessors, (1481), 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) [2021-09-22 14:22:12,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 1481 transitions. [2021-09-22 14:22:12,112 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 1481 transitions. Word has length 58 [2021-09-22 14:22:12,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:22:12,112 INFO L470 AbstractCegarLoop]: Abstraction has 732 states and 1481 transitions. [2021-09-22 14:22:12,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 2.0652173913043477) internal successors, (95), 46 states have internal predecessors, (95), 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) [2021-09-22 14:22:12,112 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 1481 transitions. [2021-09-22 14:22:12,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-09-22 14:22:12,114 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:22:12,114 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:22:12,145 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-09-22 14:22:12,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-09-22 14:22:12,341 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-09-22 14:22:12,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:22:12,341 INFO L82 PathProgramCache]: Analyzing trace with hash 536993787, now seen corresponding path program 14 times [2021-09-22 14:22:12,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:22:12,341 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106312105] [2021-09-22 14:22:12,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:22:12,346 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:22:12,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:22:13,407 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:22:13,407 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:22:13,408 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106312105] [2021-09-22 14:22:13,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106312105] provided 0 perfect and 1 imperfect interpolant sequences [2021-09-22 14:22:13,408 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298875878] [2021-09-22 14:22:13,408 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-09-22 14:22:13,408 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-09-22 14:22:13,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-09-22 14:22:13,409 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-09-22 14:22:13,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-09-22 14:22:14,694 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-09-22 14:22:14,694 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-09-22 14:22:14,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 91 conjunts are in the unsatisfiable core [2021-09-22 14:22:14,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-09-22 14:22:14,710 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-09-22 14:22:14,711 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 158 treesize of output 152 [2021-09-22 14:22:14,972 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-09-22 14:22:15,196 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-09-22 14:22:15,196 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 31 [2021-09-22 14:22:15,430 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-09-22 14:22:15,431 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 31 [2021-09-22 14:22:15,490 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-09-22 14:22:15,490 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2021-09-22 14:22:15,921 INFO L354 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2021-09-22 14:22:15,921 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 41 [2021-09-22 14:22:16,011 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:22:16,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1298875878] provided 0 perfect and 1 imperfect interpolant sequences [2021-09-22 14:22:16,012 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-09-22 14:22:16,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 27] total 39 [2021-09-22 14:22:16,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284945577] [2021-09-22 14:22:16,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-09-22 14:22:16,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:22:16,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-09-22 14:22:16,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=1527, Unknown=0, NotChecked=0, Total=1640 [2021-09-22 14:22:16,018 INFO L87 Difference]: Start difference. First operand 732 states and 1481 transitions. Second operand has 41 states, 40 states have (on average 1.875) internal successors, (75), 40 states have internal predecessors, (75), 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) [2021-09-22 14:22:19,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:22:19,157 INFO L93 Difference]: Finished difference Result 1346 states and 2698 transitions. [2021-09-22 14:22:19,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-09-22 14:22:19,157 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 1.875) internal successors, (75), 40 states have internal predecessors, (75), 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 58 [2021-09-22 14:22:19,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:22:19,159 INFO L225 Difference]: With dead ends: 1346 [2021-09-22 14:22:19,160 INFO L226 Difference]: Without dead ends: 1346 [2021-09-22 14:22:19,160 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 45 SyntacticMatches, 7 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1391 ImplicationChecksByTransitivity, 2232.2ms TimeCoverageRelationStatistics Valid=444, Invalid=5562, Unknown=0, NotChecked=0, Total=6006 [2021-09-22 14:22:19,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1346 states. [2021-09-22 14:22:19,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1346 to 646. [2021-09-22 14:22:19,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 646 states, 645 states have (on average 1.972093023255814) internal successors, (1272), 645 states have internal predecessors, (1272), 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) [2021-09-22 14:22:19,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 1272 transitions. [2021-09-22 14:22:19,173 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 1272 transitions. Word has length 58 [2021-09-22 14:22:19,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:22:19,173 INFO L470 AbstractCegarLoop]: Abstraction has 646 states and 1272 transitions. [2021-09-22 14:22:19,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 1.875) internal successors, (75), 40 states have internal predecessors, (75), 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) [2021-09-22 14:22:19,173 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 1272 transitions. [2021-09-22 14:22:19,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-09-22 14:22:19,175 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:22:19,175 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:22:19,205 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-09-22 14:22:19,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-09-22 14:22:19,396 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-09-22 14:22:19,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:22:19,397 INFO L82 PathProgramCache]: Analyzing trace with hash -1060816520, now seen corresponding path program 15 times [2021-09-22 14:22:19,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:22:19,397 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63481564] [2021-09-22 14:22:19,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:22:19,397 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:22:19,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:22:20,280 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:22:20,280 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:22:20,280 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63481564] [2021-09-22 14:22:20,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63481564] provided 0 perfect and 1 imperfect interpolant sequences [2021-09-22 14:22:20,280 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870858776] [2021-09-22 14:22:20,280 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-09-22 14:22:20,280 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-09-22 14:22:20,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-09-22 14:22:20,281 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-09-22 14:22:20,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-09-22 14:22:21,641 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-09-22 14:22:21,641 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-09-22 14:22:21,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 78 conjunts are in the unsatisfiable core [2021-09-22 14:22:21,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-09-22 14:22:21,796 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 66 [2021-09-22 14:22:22,078 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-09-22 14:22:22,078 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 49 [2021-09-22 14:22:22,328 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-09-22 14:22:22,328 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 49 [2021-09-22 14:22:22,913 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 36 [2021-09-22 14:22:22,994 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 42 proven. 41 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-09-22 14:22:22,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [870858776] provided 0 perfect and 1 imperfect interpolant sequences [2021-09-22 14:22:22,995 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-09-22 14:22:22,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 22] total 49 [2021-09-22 14:22:22,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715431282] [2021-09-22 14:22:22,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2021-09-22 14:22:22,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:22:22,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-09-22 14:22:22,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=2315, Unknown=0, NotChecked=0, Total=2450 [2021-09-22 14:22:22,996 INFO L87 Difference]: Start difference. First operand 646 states and 1272 transitions. Second operand has 50 states, 49 states have (on average 2.489795918367347) internal successors, (122), 50 states have internal predecessors, (122), 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) [2021-09-22 14:22:45,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:22:45,102 INFO L93 Difference]: Finished difference Result 2415 states and 4736 transitions. [2021-09-22 14:22:45,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2021-09-22 14:22:45,102 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 49 states have (on average 2.489795918367347) internal successors, (122), 50 states have internal predecessors, (122), 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 65 [2021-09-22 14:22:45,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:22:45,106 INFO L225 Difference]: With dead ends: 2415 [2021-09-22 14:22:45,106 INFO L226 Difference]: Without dead ends: 2415 [2021-09-22 14:22:45,108 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 130 SyntacticMatches, 1 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13209 ImplicationChecksByTransitivity, 19367.8ms TimeCoverageRelationStatistics Valid=3124, Invalid=38288, Unknown=0, NotChecked=0, Total=41412 [2021-09-22 14:22:45,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2415 states. [2021-09-22 14:22:45,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2415 to 692. [2021-09-22 14:22:45,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 691 states have (on average 2.0188133140376268) internal successors, (1395), 691 states have internal predecessors, (1395), 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) [2021-09-22 14:22:45,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1395 transitions. [2021-09-22 14:22:45,127 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1395 transitions. Word has length 65 [2021-09-22 14:22:45,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:22:45,127 INFO L470 AbstractCegarLoop]: Abstraction has 692 states and 1395 transitions. [2021-09-22 14:22:45,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 49 states have (on average 2.489795918367347) internal successors, (122), 50 states have internal predecessors, (122), 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) [2021-09-22 14:22:45,128 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1395 transitions. [2021-09-22 14:22:45,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-09-22 14:22:45,129 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:22:45,129 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:22:45,161 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2021-09-22 14:22:45,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-09-22 14:22:45,345 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-09-22 14:22:45,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:22:45,345 INFO L82 PathProgramCache]: Analyzing trace with hash -1389114510, now seen corresponding path program 16 times [2021-09-22 14:22:45,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:22:45,345 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877903930] [2021-09-22 14:22:45,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:22:45,345 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:22:45,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:22:46,393 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:22:46,394 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:22:46,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877903930] [2021-09-22 14:22:46,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877903930] provided 0 perfect and 1 imperfect interpolant sequences [2021-09-22 14:22:46,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939009775] [2021-09-22 14:22:46,394 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-09-22 14:22:46,394 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-09-22 14:22:46,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-09-22 14:22:46,395 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-09-22 14:22:46,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-09-22 14:22:47,752 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-09-22 14:22:47,753 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-09-22 14:22:47,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 86 conjunts are in the unsatisfiable core [2021-09-22 14:22:47,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-09-22 14:22:48,186 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 66 [2021-09-22 14:22:48,261 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-09-22 14:22:48,261 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 41 [2021-09-22 14:22:48,641 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-09-22 14:22:48,642 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 49 [2021-09-22 14:22:48,957 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-09-22 14:22:48,957 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 49 [2021-09-22 14:22:49,798 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 115 treesize of output 51 [2021-09-22 14:22:49,921 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 15 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:22:49,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939009775] provided 0 perfect and 1 imperfect interpolant sequences [2021-09-22 14:22:49,921 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-09-22 14:22:49,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 27] total 56 [2021-09-22 14:22:49,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868678797] [2021-09-22 14:22:49,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2021-09-22 14:22:49,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:22:49,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-09-22 14:22:49,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=3135, Unknown=0, NotChecked=0, Total=3306 [2021-09-22 14:22:49,922 INFO L87 Difference]: Start difference. First operand 692 states and 1395 transitions. Second operand has 58 states, 57 states have (on average 2.280701754385965) internal successors, (130), 57 states have internal predecessors, (130), 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) [2021-09-22 14:23:01,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:23:01,636 INFO L93 Difference]: Finished difference Result 1349 states and 2672 transitions. [2021-09-22 14:23:01,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-09-22 14:23:01,637 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 2.280701754385965) internal successors, (130), 57 states have internal predecessors, (130), 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 65 [2021-09-22 14:23:01,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:23:01,638 INFO L225 Difference]: With dead ends: 1349 [2021-09-22 14:23:01,638 INFO L226 Difference]: Without dead ends: 1349 [2021-09-22 14:23:01,639 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3077 ImplicationChecksByTransitivity, 10532.6ms TimeCoverageRelationStatistics Valid=1348, Invalid=12932, Unknown=0, NotChecked=0, Total=14280 [2021-09-22 14:23:01,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1349 states. [2021-09-22 14:23:01,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1349 to 610. [2021-09-22 14:23:01,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 609 states have (on average 2.0) internal successors, (1218), 609 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) [2021-09-22 14:23:01,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 1218 transitions. [2021-09-22 14:23:01,647 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 1218 transitions. Word has length 65 [2021-09-22 14:23:01,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:23:01,647 INFO L470 AbstractCegarLoop]: Abstraction has 610 states and 1218 transitions. [2021-09-22 14:23:01,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 2.280701754385965) internal successors, (130), 57 states have internal predecessors, (130), 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) [2021-09-22 14:23:01,648 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 1218 transitions. [2021-09-22 14:23:01,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-09-22 14:23:01,649 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:23:01,649 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:23:01,671 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-09-22 14:23:01,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-09-22 14:23:01,849 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-09-22 14:23:01,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:23:01,850 INFO L82 PathProgramCache]: Analyzing trace with hash -705914917, now seen corresponding path program 17 times [2021-09-22 14:23:01,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:23:01,850 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950734629] [2021-09-22 14:23:01,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:23:01,850 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:23:01,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:23:02,837 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 30 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:23:02,837 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:23:02,837 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950734629] [2021-09-22 14:23:02,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950734629] provided 0 perfect and 1 imperfect interpolant sequences [2021-09-22 14:23:02,837 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621824357] [2021-09-22 14:23:02,837 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-09-22 14:23:02,838 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-09-22 14:23:02,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-09-22 14:23:02,838 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-09-22 14:23:02,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-09-22 14:23:04,324 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-09-22 14:23:04,324 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-09-22 14:23:04,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 98 conjunts are in the unsatisfiable core [2021-09-22 14:23:04,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-09-22 14:23:04,439 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-09-22 14:23:04,614 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-09-22 14:23:04,614 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 31 [2021-09-22 14:23:04,798 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-09-22 14:23:04,799 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 31 [2021-09-22 14:23:05,004 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-09-22 14:23:05,004 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 31 [2021-09-22 14:23:05,649 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 36 [2021-09-22 14:23:05,717 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:23:05,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621824357] provided 0 perfect and 1 imperfect interpolant sequences [2021-09-22 14:23:05,717 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-09-22 14:23:05,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 27] total 45 [2021-09-22 14:23:05,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908249907] [2021-09-22 14:23:05,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2021-09-22 14:23:05,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:23:05,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-09-22 14:23:05,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=1971, Unknown=0, NotChecked=0, Total=2162 [2021-09-22 14:23:05,718 INFO L87 Difference]: Start difference. First operand 610 states and 1218 transitions. Second operand has 47 states, 46 states have (on average 2.3043478260869565) internal successors, (106), 46 states have internal predecessors, (106), 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) [2021-09-22 14:23:08,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:23:08,751 INFO L93 Difference]: Finished difference Result 1382 states and 2725 transitions. [2021-09-22 14:23:08,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-09-22 14:23:08,751 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 2.3043478260869565) internal successors, (106), 46 states have internal predecessors, (106), 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 66 [2021-09-22 14:23:08,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:23:08,752 INFO L225 Difference]: With dead ends: 1382 [2021-09-22 14:23:08,753 INFO L226 Difference]: Without dead ends: 751 [2021-09-22 14:23:08,753 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 50 SyntacticMatches, 7 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2192 ImplicationChecksByTransitivity, 2442.5ms TimeCoverageRelationStatistics Valid=711, Invalid=6771, Unknown=0, NotChecked=0, Total=7482 [2021-09-22 14:23:08,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751 states. [2021-09-22 14:23:08,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751 to 693. [2021-09-22 14:23:08,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 693 states, 692 states have (on average 2.0303468208092488) internal successors, (1405), 692 states have internal predecessors, (1405), 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) [2021-09-22 14:23:08,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1405 transitions. [2021-09-22 14:23:08,759 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1405 transitions. Word has length 66 [2021-09-22 14:23:08,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:23:08,760 INFO L470 AbstractCegarLoop]: Abstraction has 693 states and 1405 transitions. [2021-09-22 14:23:08,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 2.3043478260869565) internal successors, (106), 46 states have internal predecessors, (106), 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) [2021-09-22 14:23:08,760 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1405 transitions. [2021-09-22 14:23:08,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-09-22 14:23:08,761 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:23:08,761 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:23:08,784 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2021-09-22 14:23:08,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-09-22 14:23:08,965 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-09-22 14:23:08,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:23:08,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1410994721, now seen corresponding path program 18 times [2021-09-22 14:23:08,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:23:08,965 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758354642] [2021-09-22 14:23:08,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:23:08,966 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:23:09,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:23:09,867 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 30 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:23:09,868 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:23:09,868 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758354642] [2021-09-22 14:23:09,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758354642] provided 0 perfect and 1 imperfect interpolant sequences [2021-09-22 14:23:09,868 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309011042] [2021-09-22 14:23:09,868 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-09-22 14:23:09,868 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-09-22 14:23:09,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-09-22 14:23:09,869 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-09-22 14:23:09,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-09-22 14:23:11,481 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-09-22 14:23:11,481 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-09-22 14:23:11,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 108 conjunts are in the unsatisfiable core [2021-09-22 14:23:11,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-09-22 14:23:11,537 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-09-22 14:23:11,537 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1359 treesize of output 1317 [2021-09-22 14:23:11,865 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-09-22 14:23:11,889 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-09-22 14:23:11,889 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2021-09-22 14:23:12,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-09-22 14:23:12,057 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2021-09-22 14:23:12,235 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-09-22 14:23:12,235 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 31 [2021-09-22 14:23:12,418 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-09-22 14:23:12,418 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 31 [2021-09-22 14:23:13,087 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 36 [2021-09-22 14:23:13,166 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:23:13,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1309011042] provided 0 perfect and 1 imperfect interpolant sequences [2021-09-22 14:23:13,166 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-09-22 14:23:13,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 28] total 45 [2021-09-22 14:23:13,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772968601] [2021-09-22 14:23:13,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2021-09-22 14:23:13,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:23:13,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-09-22 14:23:13,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=1972, Unknown=0, NotChecked=0, Total=2162 [2021-09-22 14:23:13,167 INFO L87 Difference]: Start difference. First operand 693 states and 1405 transitions. Second operand has 47 states, 46 states have (on average 2.3043478260869565) internal successors, (106), 46 states have internal predecessors, (106), 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) [2021-09-22 14:23:15,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:23:15,994 INFO L93 Difference]: Finished difference Result 1425 states and 2823 transitions. [2021-09-22 14:23:15,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-09-22 14:23:15,995 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 2.3043478260869565) internal successors, (106), 46 states have internal predecessors, (106), 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 66 [2021-09-22 14:23:15,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:23:15,996 INFO L225 Difference]: With dead ends: 1425 [2021-09-22 14:23:15,996 INFO L226 Difference]: Without dead ends: 962 [2021-09-22 14:23:15,997 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 50 SyntacticMatches, 8 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1834 ImplicationChecksByTransitivity, 2145.6ms TimeCoverageRelationStatistics Valid=585, Invalid=5735, Unknown=0, NotChecked=0, Total=6320 [2021-09-22 14:23:15,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 962 states. [2021-09-22 14:23:16,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 962 to 872. [2021-09-22 14:23:16,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 872 states, 871 states have (on average 1.991963260619977) internal successors, (1735), 871 states have internal predecessors, (1735), 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) [2021-09-22 14:23:16,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 1735 transitions. [2021-09-22 14:23:16,005 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 1735 transitions. Word has length 66 [2021-09-22 14:23:16,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:23:16,005 INFO L470 AbstractCegarLoop]: Abstraction has 872 states and 1735 transitions. [2021-09-22 14:23:16,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 2.3043478260869565) internal successors, (106), 46 states have internal predecessors, (106), 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) [2021-09-22 14:23:16,005 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 1735 transitions. [2021-09-22 14:23:16,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-09-22 14:23:16,006 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:23:16,007 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:23:16,030 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2021-09-22 14:23:16,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-09-22 14:23:16,209 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-09-22 14:23:16,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:23:16,209 INFO L82 PathProgramCache]: Analyzing trace with hash -146384385, now seen corresponding path program 19 times [2021-09-22 14:23:16,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:23:16,209 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226923999] [2021-09-22 14:23:16,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:23:16,210 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:23:16,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:23:17,163 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 30 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:23:17,163 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:23:17,164 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226923999] [2021-09-22 14:23:17,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226923999] provided 0 perfect and 1 imperfect interpolant sequences [2021-09-22 14:23:17,164 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403027943] [2021-09-22 14:23:17,164 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-09-22 14:23:17,164 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-09-22 14:23:17,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-09-22 14:23:17,165 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-09-22 14:23:17,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-09-22 14:23:18,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:23:18,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 116 conjunts are in the unsatisfiable core [2021-09-22 14:23:18,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-09-22 14:23:18,838 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-09-22 14:23:18,839 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 687 treesize of output 675 [2021-09-22 14:23:19,066 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-09-22 14:23:19,131 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-09-22 14:23:19,131 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2021-09-22 14:23:19,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-09-22 14:23:19,319 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2021-09-22 14:23:19,512 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-09-22 14:23:19,512 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 31 [2021-09-22 14:23:19,690 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-09-22 14:23:19,690 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 31 [2021-09-22 14:23:20,384 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 36 [2021-09-22 14:23:20,476 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:23:20,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1403027943] provided 0 perfect and 1 imperfect interpolant sequences [2021-09-22 14:23:20,476 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-09-22 14:23:20,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 29] total 46 [2021-09-22 14:23:20,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712169834] [2021-09-22 14:23:20,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-09-22 14:23:20,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:23:20,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-09-22 14:23:20,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=2062, Unknown=0, NotChecked=0, Total=2256 [2021-09-22 14:23:20,478 INFO L87 Difference]: Start difference. First operand 872 states and 1735 transitions. Second operand has 48 states, 47 states have (on average 2.25531914893617) internal successors, (106), 47 states have internal predecessors, (106), 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) [2021-09-22 14:23:24,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:23:24,233 INFO L93 Difference]: Finished difference Result 1555 states and 3058 transitions. [2021-09-22 14:23:24,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-09-22 14:23:24,233 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 2.25531914893617) internal successors, (106), 47 states have internal predecessors, (106), 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 66 [2021-09-22 14:23:24,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:23:24,235 INFO L225 Difference]: With dead ends: 1555 [2021-09-22 14:23:24,235 INFO L226 Difference]: Without dead ends: 1048 [2021-09-22 14:23:24,235 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 49 SyntacticMatches, 8 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2743 ImplicationChecksByTransitivity, 2955.8ms TimeCoverageRelationStatistics Valid=846, Invalid=8274, Unknown=0, NotChecked=0, Total=9120 [2021-09-22 14:23:24,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1048 states. [2021-09-22 14:23:24,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1048 to 817. [2021-09-22 14:23:24,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 817 states, 816 states have (on average 1.9963235294117647) internal successors, (1629), 816 states have internal predecessors, (1629), 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) [2021-09-22 14:23:24,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 1629 transitions. [2021-09-22 14:23:24,243 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 1629 transitions. Word has length 66 [2021-09-22 14:23:24,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:23:24,243 INFO L470 AbstractCegarLoop]: Abstraction has 817 states and 1629 transitions. [2021-09-22 14:23:24,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 2.25531914893617) internal successors, (106), 47 states have internal predecessors, (106), 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) [2021-09-22 14:23:24,244 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 1629 transitions. [2021-09-22 14:23:24,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-09-22 14:23:24,245 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:23:24,245 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:23:24,269 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2021-09-22 14:23:24,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-09-22 14:23:24,446 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-09-22 14:23:24,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:23:24,446 INFO L82 PathProgramCache]: Analyzing trace with hash 134312027, now seen corresponding path program 20 times [2021-09-22 14:23:24,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:23:24,446 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622276297] [2021-09-22 14:23:24,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:23:24,446 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:23:24,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:23:25,442 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 30 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:23:25,442 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:23:25,442 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622276297] [2021-09-22 14:23:25,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622276297] provided 0 perfect and 1 imperfect interpolant sequences [2021-09-22 14:23:25,442 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603426295] [2021-09-22 14:23:25,442 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-09-22 14:23:25,442 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-09-22 14:23:25,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-09-22 14:23:25,443 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-09-22 14:23:25,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-09-22 14:23:27,230 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-09-22 14:23:27,230 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-09-22 14:23:27,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 108 conjunts are in the unsatisfiable core [2021-09-22 14:23:27,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-09-22 14:23:27,249 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-09-22 14:23:27,250 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 557 treesize of output 545 [2021-09-22 14:23:27,494 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-09-22 14:23:27,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-09-22 14:23:27,656 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2021-09-22 14:23:27,712 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-09-22 14:23:27,712 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2021-09-22 14:23:27,926 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-09-22 14:23:27,926 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 31 [2021-09-22 14:23:28,158 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-09-22 14:23:28,158 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 31 [2021-09-22 14:23:28,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 36 [2021-09-22 14:23:28,965 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:23:28,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [603426295] provided 0 perfect and 1 imperfect interpolant sequences [2021-09-22 14:23:28,965 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-09-22 14:23:28,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 29] total 46 [2021-09-22 14:23:28,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8102462] [2021-09-22 14:23:28,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-09-22 14:23:28,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:23:28,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-09-22 14:23:28,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=2058, Unknown=0, NotChecked=0, Total=2256 [2021-09-22 14:23:28,966 INFO L87 Difference]: Start difference. First operand 817 states and 1629 transitions. Second operand has 48 states, 47 states have (on average 2.25531914893617) internal successors, (106), 47 states have internal predecessors, (106), 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) [2021-09-22 14:23:31,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:23:31,881 INFO L93 Difference]: Finished difference Result 1419 states and 2811 transitions. [2021-09-22 14:23:31,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-09-22 14:23:31,881 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 2.25531914893617) internal successors, (106), 47 states have internal predecessors, (106), 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 66 [2021-09-22 14:23:31,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:23:31,882 INFO L225 Difference]: With dead ends: 1419 [2021-09-22 14:23:31,882 INFO L226 Difference]: Without dead ends: 956 [2021-09-22 14:23:31,883 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 49 SyntacticMatches, 8 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2194 ImplicationChecksByTransitivity, 2523.3ms TimeCoverageRelationStatistics Valid=672, Invalid=6810, Unknown=0, NotChecked=0, Total=7482 [2021-09-22 14:23:31,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 956 states. [2021-09-22 14:23:31,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 956 to 896. [2021-09-22 14:23:31,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 896 states, 895 states have (on average 1.9798882681564245) internal successors, (1772), 895 states have internal predecessors, (1772), 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) [2021-09-22 14:23:31,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 1772 transitions. [2021-09-22 14:23:31,891 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 1772 transitions. Word has length 66 [2021-09-22 14:23:31,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:23:31,891 INFO L470 AbstractCegarLoop]: Abstraction has 896 states and 1772 transitions. [2021-09-22 14:23:31,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 2.25531914893617) internal successors, (106), 47 states have internal predecessors, (106), 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) [2021-09-22 14:23:31,891 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 1772 transitions. [2021-09-22 14:23:31,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-09-22 14:23:31,892 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:23:31,892 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:23:31,916 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2021-09-22 14:23:32,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-09-22 14:23:32,093 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-09-22 14:23:32,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:23:32,093 INFO L82 PathProgramCache]: Analyzing trace with hash 1194494335, now seen corresponding path program 21 times [2021-09-22 14:23:32,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:23:32,094 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847893505] [2021-09-22 14:23:32,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:23:32,094 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:23:32,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:23:33,113 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 30 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:23:33,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:23:33,114 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847893505] [2021-09-22 14:23:33,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847893505] provided 0 perfect and 1 imperfect interpolant sequences [2021-09-22 14:23:33,114 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414008038] [2021-09-22 14:23:33,114 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-09-22 14:23:33,114 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-09-22 14:23:33,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-09-22 14:23:33,119 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-09-22 14:23:33,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-09-22 14:23:35,107 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-09-22 14:23:35,108 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-09-22 14:23:35,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 109 conjunts are in the unsatisfiable core [2021-09-22 14:23:35,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-09-22 14:23:35,141 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-09-22 14:23:35,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 6105 treesize of output 5817 [2021-09-22 14:23:35,828 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-09-22 14:23:36,035 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-09-22 14:23:36,035 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 31 [2021-09-22 14:23:36,260 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-09-22 14:23:36,261 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 31 [2021-09-22 14:23:36,340 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-09-22 14:23:36,340 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2021-09-22 14:23:36,573 INFO L354 Elim1Store]: treesize reduction 24, result has 38.5 percent of original size [2021-09-22 14:23:36,574 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 84 treesize of output 87 [2021-09-22 14:23:37,420 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 36 [2021-09-22 14:23:37,488 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:23:37,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [414008038] provided 0 perfect and 1 imperfect interpolant sequences [2021-09-22 14:23:37,489 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-09-22 14:23:37,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 29] total 47 [2021-09-22 14:23:37,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126861599] [2021-09-22 14:23:37,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2021-09-22 14:23:37,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:23:37,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-09-22 14:23:37,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=2144, Unknown=0, NotChecked=0, Total=2352 [2021-09-22 14:23:37,490 INFO L87 Difference]: Start difference. First operand 896 states and 1772 transitions. Second operand has 49 states, 48 states have (on average 2.2291666666666665) internal successors, (107), 48 states have internal predecessors, (107), 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) [2021-09-22 14:23:39,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:23:39,989 INFO L93 Difference]: Finished difference Result 1253 states and 2495 transitions. [2021-09-22 14:23:39,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-09-22 14:23:39,990 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 48 states have (on average 2.2291666666666665) internal successors, (107), 48 states have internal predecessors, (107), 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 66 [2021-09-22 14:23:39,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:23:39,991 INFO L225 Difference]: With dead ends: 1253 [2021-09-22 14:23:39,991 INFO L226 Difference]: Without dead ends: 990 [2021-09-22 14:23:39,992 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 48 SyntacticMatches, 8 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1884 ImplicationChecksByTransitivity, 2213.8ms TimeCoverageRelationStatistics Valid=552, Invalid=5768, Unknown=0, NotChecked=0, Total=6320 [2021-09-22 14:23:39,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 990 states. [2021-09-22 14:23:39,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 990 to 924. [2021-09-22 14:23:40,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 924 states, 923 states have (on average 1.9729144095341278) internal successors, (1821), 923 states have internal predecessors, (1821), 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) [2021-09-22 14:23:40,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 924 states to 924 states and 1821 transitions. [2021-09-22 14:23:40,002 INFO L78 Accepts]: Start accepts. Automaton has 924 states and 1821 transitions. Word has length 66 [2021-09-22 14:23:40,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:23:40,003 INFO L470 AbstractCegarLoop]: Abstraction has 924 states and 1821 transitions. [2021-09-22 14:23:40,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 48 states have (on average 2.2291666666666665) internal successors, (107), 48 states have internal predecessors, (107), 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) [2021-09-22 14:23:40,003 INFO L276 IsEmpty]: Start isEmpty. Operand 924 states and 1821 transitions. [2021-09-22 14:23:40,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-09-22 14:23:40,005 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:23:40,005 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:23:40,055 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2021-09-22 14:23:40,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-09-22 14:23:40,225 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-09-22 14:23:40,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:23:40,225 INFO L82 PathProgramCache]: Analyzing trace with hash 1666322421, now seen corresponding path program 22 times [2021-09-22 14:23:40,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:23:40,225 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98982599] [2021-09-22 14:23:40,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:23:40,225 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:23:40,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:23:41,519 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 20 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:23:41,520 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:23:41,520 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98982599] [2021-09-22 14:23:41,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98982599] provided 0 perfect and 1 imperfect interpolant sequences [2021-09-22 14:23:41,520 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349309964] [2021-09-22 14:23:41,520 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-09-22 14:23:41,520 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-09-22 14:23:41,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-09-22 14:23:41,521 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-09-22 14:23:41,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-09-22 14:23:43,528 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-09-22 14:23:43,529 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-09-22 14:23:43,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 103 conjunts are in the unsatisfiable core [2021-09-22 14:23:43,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-09-22 14:23:43,556 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-09-22 14:23:43,556 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 265 treesize of output 255 [2021-09-22 14:23:43,780 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 66 [2021-09-22 14:23:44,119 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-09-22 14:23:44,120 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 49 [2021-09-22 14:23:44,485 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-09-22 14:23:44,485 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 49 [2021-09-22 14:23:44,792 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-09-22 14:23:44,793 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 49 [2021-09-22 14:23:44,950 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-09-22 14:23:44,950 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 43 [2021-09-22 14:23:45,859 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 45 [2021-09-22 14:23:45,976 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 6 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:23:45,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349309964] provided 0 perfect and 1 imperfect interpolant sequences [2021-09-22 14:23:45,977 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-09-22 14:23:45,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 32] total 70 [2021-09-22 14:23:45,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337028492] [2021-09-22 14:23:45,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2021-09-22 14:23:45,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:23:45,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2021-09-22 14:23:45,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=303, Invalid=4809, Unknown=0, NotChecked=0, Total=5112 [2021-09-22 14:23:45,978 INFO L87 Difference]: Start difference. First operand 924 states and 1821 transitions. Second operand has 72 states, 71 states have (on average 1.8591549295774648) internal successors, (132), 71 states have internal predecessors, (132), 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) [2021-09-22 14:24:18,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:24:18,806 INFO L93 Difference]: Finished difference Result 1612 states and 3173 transitions. [2021-09-22 14:24:18,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2021-09-22 14:24:18,806 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 71 states have (on average 1.8591549295774648) internal successors, (132), 71 states have internal predecessors, (132), 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 66 [2021-09-22 14:24:18,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:24:18,807 INFO L225 Difference]: With dead ends: 1612 [2021-09-22 14:24:18,808 INFO L226 Difference]: Without dead ends: 1050 [2021-09-22 14:24:18,809 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10662 ImplicationChecksByTransitivity, 29259.5ms TimeCoverageRelationStatistics Valid=3353, Invalid=32937, Unknown=0, NotChecked=0, Total=36290 [2021-09-22 14:24:18,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1050 states. [2021-09-22 14:24:18,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1050 to 766. [2021-09-22 14:24:18,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 766 states, 765 states have (on average 1.9660130718954247) internal successors, (1504), 765 states have internal predecessors, (1504), 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) [2021-09-22 14:24:18,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 766 states to 766 states and 1504 transitions. [2021-09-22 14:24:18,819 INFO L78 Accepts]: Start accepts. Automaton has 766 states and 1504 transitions. Word has length 66 [2021-09-22 14:24:18,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:24:18,820 INFO L470 AbstractCegarLoop]: Abstraction has 766 states and 1504 transitions. [2021-09-22 14:24:18,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 71 states have (on average 1.8591549295774648) internal successors, (132), 71 states have internal predecessors, (132), 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) [2021-09-22 14:24:18,820 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states and 1504 transitions. [2021-09-22 14:24:18,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-09-22 14:24:18,821 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:24:18,821 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:24:18,849 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2021-09-22 14:24:19,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-09-22 14:24:19,033 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-09-22 14:24:19,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:24:19,033 INFO L82 PathProgramCache]: Analyzing trace with hash -574986900, now seen corresponding path program 23 times [2021-09-22 14:24:19,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:24:19,033 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126111737] [2021-09-22 14:24:19,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:24:19,033 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:24:19,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:24:20,408 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 42 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:24:20,409 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:24:20,409 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126111737] [2021-09-22 14:24:20,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126111737] provided 0 perfect and 1 imperfect interpolant sequences [2021-09-22 14:24:20,409 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058575211] [2021-09-22 14:24:20,409 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-09-22 14:24:20,409 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-09-22 14:24:20,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-09-22 14:24:20,410 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-09-22 14:24:20,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-09-22 14:24:22,554 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-09-22 14:24:22,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-09-22 14:24:22,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 118 conjunts are in the unsatisfiable core [2021-09-22 14:24:22,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-09-22 14:24:22,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-09-22 14:24:22,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-09-22 14:24:22,849 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2021-09-22 14:24:23,044 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-09-22 14:24:23,045 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 31 [2021-09-22 14:24:23,238 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-09-22 14:24:23,238 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 31 [2021-09-22 14:24:23,434 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-09-22 14:24:23,434 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 31 [2021-09-22 14:24:24,290 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 36 [2021-09-22 14:24:24,373 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 150 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:24:24,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2058575211] provided 0 perfect and 1 imperfect interpolant sequences [2021-09-22 14:24:24,374 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-09-22 14:24:24,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 32] total 55 [2021-09-22 14:24:24,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274687586] [2021-09-22 14:24:24,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2021-09-22 14:24:24,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:24:24,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2021-09-22 14:24:24,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=2938, Unknown=0, NotChecked=0, Total=3192 [2021-09-22 14:24:24,375 INFO L87 Difference]: Start difference. First operand 766 states and 1504 transitions. Second operand has 57 states, 56 states have (on average 2.3392857142857144) internal successors, (131), 56 states have internal predecessors, (131), 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) [2021-09-22 14:24:26,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:24:26,868 INFO L93 Difference]: Finished difference Result 1181 states and 2327 transitions. [2021-09-22 14:24:26,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-09-22 14:24:26,869 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 56 states have (on average 2.3392857142857144) internal successors, (131), 56 states have internal predecessors, (131), 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 81 [2021-09-22 14:24:26,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:24:26,870 INFO L225 Difference]: With dead ends: 1181 [2021-09-22 14:24:26,870 INFO L226 Difference]: Without dead ends: 733 [2021-09-22 14:24:26,870 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 63 SyntacticMatches, 7 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2032 ImplicationChecksByTransitivity, 2309.1ms TimeCoverageRelationStatistics Valid=589, Invalid=6551, Unknown=0, NotChecked=0, Total=7140 [2021-09-22 14:24:26,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2021-09-22 14:24:26,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 733. [2021-09-22 14:24:26,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 733 states, 732 states have (on average 1.9521857923497268) internal successors, (1429), 732 states have internal predecessors, (1429), 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) [2021-09-22 14:24:26,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 1429 transitions. [2021-09-22 14:24:26,877 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 1429 transitions. Word has length 81 [2021-09-22 14:24:26,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:24:26,877 INFO L470 AbstractCegarLoop]: Abstraction has 733 states and 1429 transitions. [2021-09-22 14:24:26,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 56 states have (on average 2.3392857142857144) internal successors, (131), 56 states have internal predecessors, (131), 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) [2021-09-22 14:24:26,877 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 1429 transitions. [2021-09-22 14:24:26,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-09-22 14:24:26,878 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:24:26,878 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:24:26,903 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2021-09-22 14:24:27,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2021-09-22 14:24:27,079 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-09-22 14:24:27,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:24:27,079 INFO L82 PathProgramCache]: Analyzing trace with hash -779331994, now seen corresponding path program 24 times [2021-09-22 14:24:27,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:24:27,079 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925332571] [2021-09-22 14:24:27,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:24:27,079 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:24:27,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:24:28,538 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 42 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:24:28,538 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:24:28,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925332571] [2021-09-22 14:24:28,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925332571] provided 0 perfect and 1 imperfect interpolant sequences [2021-09-22 14:24:28,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602974329] [2021-09-22 14:24:28,538 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-09-22 14:24:28,539 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-09-22 14:24:28,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-09-22 14:24:28,539 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-09-22 14:24:28,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2021-09-22 14:24:30,921 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-09-22 14:24:30,921 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-09-22 14:24:30,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 111 conjunts are in the unsatisfiable core [2021-09-22 14:24:30,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-09-22 14:24:30,944 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-09-22 14:24:30,944 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1573 treesize of output 1503 [2021-09-22 14:24:31,372 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 66 [2021-09-22 14:24:31,445 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-09-22 14:24:31,445 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 42 [2021-09-22 14:24:31,828 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-09-22 14:24:31,829 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 44 [2021-09-22 14:24:32,112 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-09-22 14:24:32,112 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 44 [2021-09-22 14:24:32,408 INFO L354 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2021-09-22 14:24:32,408 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 52 [2021-09-22 14:24:32,932 INFO L354 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2021-09-22 14:24:32,932 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 60 [2021-09-22 14:24:34,429 INFO L354 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2021-09-22 14:24:34,430 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 56 [2021-09-22 14:24:46,756 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 64 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:24:46,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602974329] provided 0 perfect and 1 imperfect interpolant sequences [2021-09-22 14:24:46,756 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-09-22 14:24:46,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 36] total 78 [2021-09-22 14:24:46,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568835670] [2021-09-22 14:24:46,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2021-09-22 14:24:46,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:24:46,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2021-09-22 14:24:46,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=541, Invalid=5773, Unknown=6, NotChecked=0, Total=6320 [2021-09-22 14:24:46,759 INFO L87 Difference]: Start difference. First operand 733 states and 1429 transitions. Second operand has 80 states, 79 states have (on average 2.050632911392405) internal successors, (162), 79 states have internal predecessors, (162), 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) [2021-09-22 14:24:50,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:24:50,145 INFO L93 Difference]: Finished difference Result 1148 states and 2252 transitions. [2021-09-22 14:24:50,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-09-22 14:24:50,145 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 79 states have (on average 2.050632911392405) internal successors, (162), 79 states have internal predecessors, (162), 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 81 [2021-09-22 14:24:50,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:24:50,146 INFO L225 Difference]: With dead ends: 1148 [2021-09-22 14:24:50,146 INFO L226 Difference]: Without dead ends: 733 [2021-09-22 14:24:50,147 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3294 ImplicationChecksByTransitivity, 16332.8ms TimeCoverageRelationStatistics Valid=1104, Invalid=10232, Unknown=6, NotChecked=0, Total=11342 [2021-09-22 14:24:50,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2021-09-22 14:24:50,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 723. [2021-09-22 14:24:50,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 723 states, 722 states have (on average 1.948753462603878) internal successors, (1407), 722 states have internal predecessors, (1407), 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) [2021-09-22 14:24:50,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 1407 transitions. [2021-09-22 14:24:50,156 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 1407 transitions. Word has length 81 [2021-09-22 14:24:50,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:24:50,156 INFO L470 AbstractCegarLoop]: Abstraction has 723 states and 1407 transitions. [2021-09-22 14:24:50,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 79 states have (on average 2.050632911392405) internal successors, (162), 79 states have internal predecessors, (162), 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) [2021-09-22 14:24:50,157 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 1407 transitions. [2021-09-22 14:24:50,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-09-22 14:24:50,158 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:24:50,158 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:24:50,195 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2021-09-22 14:24:50,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-09-22 14:24:50,385 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-09-22 14:24:50,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:24:50,385 INFO L82 PathProgramCache]: Analyzing trace with hash 31954632, now seen corresponding path program 25 times [2021-09-22 14:24:50,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:24:50,385 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137819680] [2021-09-22 14:24:50,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:24:50,385 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:24:50,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:24:51,859 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 42 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:24:51,860 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:24:51,860 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137819680] [2021-09-22 14:24:51,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137819680] provided 0 perfect and 1 imperfect interpolant sequences [2021-09-22 14:24:51,860 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378365899] [2021-09-22 14:24:51,860 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-09-22 14:24:51,860 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-09-22 14:24:51,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-09-22 14:24:51,861 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-09-22 14:24:51,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-09-22 14:24:54,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:24:54,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 123 conjunts are in the unsatisfiable core [2021-09-22 14:24:54,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-09-22 14:24:54,281 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-09-22 14:24:54,282 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 3502 treesize of output 3244 [2021-09-22 14:24:54,584 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-09-22 14:24:54,646 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-09-22 14:24:54,646 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2021-09-22 14:24:54,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-09-22 14:24:54,827 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2021-09-22 14:24:55,033 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-09-22 14:24:55,034 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 31 [2021-09-22 14:24:55,238 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-09-22 14:24:55,239 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 31 [2021-09-22 14:24:55,448 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-09-22 14:24:55,449 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 31 [2021-09-22 14:24:56,373 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 36 [2021-09-22 14:24:56,463 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 150 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:24:56,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1378365899] provided 0 perfect and 1 imperfect interpolant sequences [2021-09-22 14:24:56,464 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-09-22 14:24:56,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 33] total 56 [2021-09-22 14:24:56,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706125287] [2021-09-22 14:24:56,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2021-09-22 14:24:56,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:24:56,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-09-22 14:24:56,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=263, Invalid=3043, Unknown=0, NotChecked=0, Total=3306 [2021-09-22 14:24:56,465 INFO L87 Difference]: Start difference. First operand 723 states and 1407 transitions. Second operand has 58 states, 57 states have (on average 2.3157894736842106) internal successors, (132), 57 states have internal predecessors, (132), 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) [2021-09-22 14:24:58,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:24:58,943 INFO L93 Difference]: Finished difference Result 1013 states and 1980 transitions. [2021-09-22 14:24:58,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-09-22 14:24:58,943 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 2.3157894736842106) internal successors, (132), 57 states have internal predecessors, (132), 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 81 [2021-09-22 14:24:58,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:24:58,944 INFO L225 Difference]: With dead ends: 1013 [2021-09-22 14:24:58,944 INFO L226 Difference]: Without dead ends: 608 [2021-09-22 14:24:58,945 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 63 SyntacticMatches, 7 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2137 ImplicationChecksByTransitivity, 2600.5ms TimeCoverageRelationStatistics Valid=609, Invalid=6873, Unknown=0, NotChecked=0, Total=7482 [2021-09-22 14:24:58,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2021-09-22 14:24:58,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 608. [2021-09-22 14:24:58,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 607 states have (on average 1.9275123558484348) internal successors, (1170), 607 states have internal predecessors, (1170), 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) [2021-09-22 14:24:58,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 1170 transitions. [2021-09-22 14:24:58,953 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 1170 transitions. Word has length 81 [2021-09-22 14:24:58,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:24:58,953 INFO L470 AbstractCegarLoop]: Abstraction has 608 states and 1170 transitions. [2021-09-22 14:24:58,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 2.3157894736842106) internal successors, (132), 57 states have internal predecessors, (132), 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) [2021-09-22 14:24:58,953 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 1170 transitions. [2021-09-22 14:24:58,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-09-22 14:24:58,954 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:24:58,954 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:24:58,980 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2021-09-22 14:24:59,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-09-22 14:24:59,155 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-09-22 14:24:59,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:24:59,155 INFO L82 PathProgramCache]: Analyzing trace with hash -1656128276, now seen corresponding path program 26 times [2021-09-22 14:24:59,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:24:59,155 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166749005] [2021-09-22 14:24:59,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:24:59,155 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:24:59,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:25:00,682 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 42 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:25:00,682 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:25:00,682 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166749005] [2021-09-22 14:25:00,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166749005] provided 0 perfect and 1 imperfect interpolant sequences [2021-09-22 14:25:00,683 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967425382] [2021-09-22 14:25:00,683 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-09-22 14:25:00,683 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-09-22 14:25:00,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-09-22 14:25:00,684 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-09-22 14:25:00,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2021-09-22 14:25:03,231 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-09-22 14:25:03,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-09-22 14:25:03,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 119 conjunts are in the unsatisfiable core [2021-09-22 14:25:03,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-09-22 14:25:03,252 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-09-22 14:25:03,253 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 127 treesize of output 123 [2021-09-22 14:25:03,514 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-09-22 14:25:03,755 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-09-22 14:25:03,755 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 31 [2021-09-22 14:25:03,819 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-09-22 14:25:03,820 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2021-09-22 14:25:04,042 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-09-22 14:25:04,043 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 31 [2021-09-22 14:25:04,258 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-09-22 14:25:04,259 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 31 [2021-09-22 14:25:04,490 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-09-22 14:25:04,490 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 31 [2021-09-22 14:25:05,423 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 36 [2021-09-22 14:25:05,514 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 150 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:25:05,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1967425382] provided 0 perfect and 1 imperfect interpolant sequences [2021-09-22 14:25:05,514 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-09-22 14:25:05,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 34] total 58 [2021-09-22 14:25:05,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035776987] [2021-09-22 14:25:05,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2021-09-22 14:25:05,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:25:05,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2021-09-22 14:25:05,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=283, Invalid=3257, Unknown=0, NotChecked=0, Total=3540 [2021-09-22 14:25:05,516 INFO L87 Difference]: Start difference. First operand 608 states and 1170 transitions. Second operand has 60 states, 59 states have (on average 2.2542372881355934) internal successors, (133), 59 states have internal predecessors, (133), 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) [2021-09-22 14:25:08,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:25:08,780 INFO L93 Difference]: Finished difference Result 997 states and 1916 transitions. [2021-09-22 14:25:08,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-09-22 14:25:08,780 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 59 states have (on average 2.2542372881355934) internal successors, (133), 59 states have internal predecessors, (133), 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 81 [2021-09-22 14:25:08,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:25:08,785 INFO L225 Difference]: With dead ends: 997 [2021-09-22 14:25:08,785 INFO L226 Difference]: Without dead ends: 707 [2021-09-22 14:25:08,786 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 62 SyntacticMatches, 6 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2709 ImplicationChecksByTransitivity, 3119.4ms TimeCoverageRelationStatistics Valid=756, Invalid=8556, Unknown=0, NotChecked=0, Total=9312 [2021-09-22 14:25:08,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2021-09-22 14:25:08,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 653. [2021-09-22 14:25:08,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 653 states, 652 states have (on average 1.927914110429448) internal successors, (1257), 652 states have internal predecessors, (1257), 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) [2021-09-22 14:25:08,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 1257 transitions. [2021-09-22 14:25:08,792 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 1257 transitions. Word has length 81 [2021-09-22 14:25:08,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:25:08,792 INFO L470 AbstractCegarLoop]: Abstraction has 653 states and 1257 transitions. [2021-09-22 14:25:08,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 59 states have (on average 2.2542372881355934) internal successors, (133), 59 states have internal predecessors, (133), 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) [2021-09-22 14:25:08,792 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 1257 transitions. [2021-09-22 14:25:08,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-09-22 14:25:08,793 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:25:08,794 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:25:08,830 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2021-09-22 14:25:09,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2021-09-22 14:25:09,017 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-09-22 14:25:09,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:25:09,017 INFO L82 PathProgramCache]: Analyzing trace with hash -316246200, now seen corresponding path program 27 times [2021-09-22 14:25:09,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:25:09,018 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801730368] [2021-09-22 14:25:09,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:25:09,018 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:25:09,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:25:10,609 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 42 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:25:10,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:25:10,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801730368] [2021-09-22 14:25:10,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801730368] provided 0 perfect and 1 imperfect interpolant sequences [2021-09-22 14:25:10,610 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518269145] [2021-09-22 14:25:10,610 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-09-22 14:25:10,610 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-09-22 14:25:10,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-09-22 14:25:10,611 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-09-22 14:25:10,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2021-09-22 14:25:13,439 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-09-22 14:25:13,439 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-09-22 14:25:13,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 123 conjunts are in the unsatisfiable core [2021-09-22 14:25:13,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-09-22 14:25:13,456 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-09-22 14:25:13,456 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 166 treesize of output 160 [2021-09-22 14:25:13,819 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 66 [2021-09-22 14:25:14,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-09-22 14:25:14,289 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 38 [2021-09-22 14:25:14,602 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-09-22 14:25:14,603 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 31 [2021-09-22 14:25:14,663 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-09-22 14:25:14,663 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2021-09-22 14:25:14,894 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-09-22 14:25:14,895 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 31 [2021-09-22 14:25:15,109 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-09-22 14:25:15,109 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 31 [2021-09-22 14:25:16,113 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 36 [2021-09-22 14:25:16,218 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 150 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:25:16,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1518269145] provided 0 perfect and 1 imperfect interpolant sequences [2021-09-22 14:25:16,219 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-09-22 14:25:16,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 35] total 67 [2021-09-22 14:25:16,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652208415] [2021-09-22 14:25:16,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2021-09-22 14:25:16,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:25:16,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2021-09-22 14:25:16,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=348, Invalid=4344, Unknown=0, NotChecked=0, Total=4692 [2021-09-22 14:25:16,220 INFO L87 Difference]: Start difference. First operand 653 states and 1257 transitions. Second operand has 69 states, 68 states have (on average 2.176470588235294) internal successors, (148), 68 states have internal predecessors, (148), 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) [2021-09-22 14:25:19,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:25:19,747 INFO L93 Difference]: Finished difference Result 1007 states and 1933 transitions. [2021-09-22 14:25:19,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-09-22 14:25:19,747 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 68 states have (on average 2.176470588235294) internal successors, (148), 68 states have internal predecessors, (148), 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 81 [2021-09-22 14:25:19,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:25:19,748 INFO L225 Difference]: With dead ends: 1007 [2021-09-22 14:25:19,748 INFO L226 Difference]: Without dead ends: 717 [2021-09-22 14:25:19,752 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 55 SyntacticMatches, 4 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3502 ImplicationChecksByTransitivity, 3795.2ms TimeCoverageRelationStatistics Valid=848, Invalid=10494, Unknown=0, NotChecked=0, Total=11342 [2021-09-22 14:25:19,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2021-09-22 14:25:19,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 618. [2021-09-22 14:25:19,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 618 states, 617 states have (on average 1.9238249594813615) internal successors, (1187), 617 states have internal predecessors, (1187), 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) [2021-09-22 14:25:19,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 1187 transitions. [2021-09-22 14:25:19,760 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 1187 transitions. Word has length 81 [2021-09-22 14:25:19,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:25:19,760 INFO L470 AbstractCegarLoop]: Abstraction has 618 states and 1187 transitions. [2021-09-22 14:25:19,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 68 states have (on average 2.176470588235294) internal successors, (148), 68 states have internal predecessors, (148), 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) [2021-09-22 14:25:19,761 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 1187 transitions. [2021-09-22 14:25:19,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-09-22 14:25:19,762 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:25:19,762 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:25:19,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2021-09-22 14:25:19,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2021-09-22 14:25:19,981 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-09-22 14:25:19,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:25:19,981 INFO L82 PathProgramCache]: Analyzing trace with hash -204592020, now seen corresponding path program 28 times [2021-09-22 14:25:19,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:25:19,981 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144731700] [2021-09-22 14:25:19,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:25:19,981 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:25:20,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:25:21,658 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 42 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:25:21,658 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:25:21,658 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144731700] [2021-09-22 14:25:21,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144731700] provided 0 perfect and 1 imperfect interpolant sequences [2021-09-22 14:25:21,659 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018637711] [2021-09-22 14:25:21,659 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-09-22 14:25:21,659 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-09-22 14:25:21,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-09-22 14:25:21,659 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-09-22 14:25:21,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2021-09-22 14:25:24,420 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-09-22 14:25:24,420 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-09-22 14:25:24,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 115 conjunts are in the unsatisfiable core [2021-09-22 14:25:24,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-09-22 14:25:24,435 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-09-22 14:25:24,435 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 420 treesize of output 386 [2021-09-22 14:25:24,736 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 66 [2021-09-22 14:25:25,162 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-09-22 14:25:25,162 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 49 [2021-09-22 14:25:25,522 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-09-22 14:25:25,523 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 49 [2021-09-22 14:25:25,954 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-09-22 14:25:25,954 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 49 [2021-09-22 14:25:26,126 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-09-22 14:25:26,127 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 43 [2021-09-22 14:25:26,383 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-09-22 14:25:26,383 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 49 [2021-09-22 14:25:27,581 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 45 [2021-09-22 14:25:47,950 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 6 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:25:47,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2018637711] provided 0 perfect and 1 imperfect interpolant sequences [2021-09-22 14:25:47,951 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-09-22 14:25:47,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 36] total 78 [2021-09-22 14:25:47,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401686988] [2021-09-22 14:25:47,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2021-09-22 14:25:47,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:25:47,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2021-09-22 14:25:47,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=337, Invalid=5973, Unknown=10, NotChecked=0, Total=6320 [2021-09-22 14:25:47,952 INFO L87 Difference]: Start difference. First operand 618 states and 1187 transitions. Second operand has 80 states, 79 states have (on average 2.050632911392405) internal successors, (162), 79 states have internal predecessors, (162), 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) [2021-09-22 14:26:40,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:26:40,923 INFO L93 Difference]: Finished difference Result 630 states and 1199 transitions. [2021-09-22 14:26:40,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-09-22 14:26:40,924 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 79 states have (on average 2.050632911392405) internal successors, (162), 79 states have internal predecessors, (162), 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 81 [2021-09-22 14:26:40,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:26:40,925 INFO L225 Difference]: With dead ends: 630 [2021-09-22 14:26:40,925 INFO L226 Difference]: Without dead ends: 332 [2021-09-22 14:26:40,926 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6162 ImplicationChecksByTransitivity, 69419.7ms TimeCoverageRelationStatistics Valid=2033, Invalid=21213, Unknown=10, NotChecked=0, Total=23256 [2021-09-22 14:26:40,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2021-09-22 14:26:40,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 322. [2021-09-22 14:26:40,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 321 states have (on average 1.8317757009345794) internal successors, (588), 321 states have internal predecessors, (588), 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) [2021-09-22 14:26:40,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 588 transitions. [2021-09-22 14:26:40,930 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 588 transitions. Word has length 81 [2021-09-22 14:26:40,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:26:40,930 INFO L470 AbstractCegarLoop]: Abstraction has 322 states and 588 transitions. [2021-09-22 14:26:40,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 79 states have (on average 2.050632911392405) internal successors, (162), 79 states have internal predecessors, (162), 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) [2021-09-22 14:26:40,930 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 588 transitions. [2021-09-22 14:26:40,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-09-22 14:26:40,931 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:26:40,931 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:26:40,961 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2021-09-22 14:26:41,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2021-09-22 14:26:41,132 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-09-22 14:26:41,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:26:41,132 INFO L82 PathProgramCache]: Analyzing trace with hash -672614070, now seen corresponding path program 29 times [2021-09-22 14:26:41,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:26:41,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798216718] [2021-09-22 14:26:41,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:26:41,132 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:26:41,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:26:41,275 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 129 proven. 44 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-09-22 14:26:41,276 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:26:41,276 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798216718] [2021-09-22 14:26:41,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798216718] provided 0 perfect and 1 imperfect interpolant sequences [2021-09-22 14:26:41,276 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628703662] [2021-09-22 14:26:41,276 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-09-22 14:26:41,276 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-09-22 14:26:41,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-09-22 14:26:41,286 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-09-22 14:26:41,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2021-09-22 14:26:44,243 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-09-22 14:26:44,243 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-09-22 14:26:44,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 7 conjunts are in the unsatisfiable core [2021-09-22 14:26:44,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-09-22 14:26:44,435 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 173 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-09-22 14:26:44,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628703662] provided 1 perfect and 0 imperfect interpolant sequences [2021-09-22 14:26:44,435 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-09-22 14:26:44,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 9 [2021-09-22 14:26:44,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347914539] [2021-09-22 14:26:44,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-09-22 14:26:44,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:26:44,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-09-22 14:26:44,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-09-22 14:26:44,436 INFO L87 Difference]: Start difference. First operand 322 states and 588 transitions. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 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) [2021-09-22 14:26:44,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:26:44,453 INFO L93 Difference]: Finished difference Result 274 states and 492 transitions. [2021-09-22 14:26:44,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-09-22 14:26:44,454 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 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 89 [2021-09-22 14:26:44,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:26:44,454 INFO L225 Difference]: With dead ends: 274 [2021-09-22 14:26:44,454 INFO L226 Difference]: Without dead ends: 0 [2021-09-22 14:26:44,454 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 26.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-09-22 14:26:44,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-09-22 14:26:44,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-09-22 14:26:44,454 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) [2021-09-22 14:26:44,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-09-22 14:26:44,455 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 89 [2021-09-22 14:26:44,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:26:44,455 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-09-22 14:26:44,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 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) [2021-09-22 14:26:44,455 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-09-22 14:26:44,455 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-09-22 14:26:44,457 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-09-22 14:26:44,457 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-09-22 14:26:44,458 INFO L764 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION [2021-09-22 14:26:44,458 INFO L764 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION [2021-09-22 14:26:44,458 INFO L764 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION [2021-09-22 14:26:44,458 INFO L764 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION [2021-09-22 14:26:44,487 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2021-09-22 14:26:44,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2021-09-22 14:26:44,662 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-09-22 14:26:44,663 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-09-22 14:26:44,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.09 02:26:44 BasicIcfg [2021-09-22 14:26:44,664 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-09-22 14:26:44,664 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-09-22 14:26:44,664 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-09-22 14:26:44,665 INFO L275 PluginConnector]: Witness Printer initialized [2021-09-22 14:26:44,665 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.09 02:20:01" (3/4) ... [2021-09-22 14:26:44,667 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-09-22 14:26:44,672 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure t1 [2021-09-22 14:26:44,673 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure t2 [2021-09-22 14:26:44,675 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-09-22 14:26:44,675 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-09-22 14:26:44,675 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-09-22 14:26:44,676 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-09-22 14:26:44,702 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-09-22 14:26:44,702 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-09-22 14:26:44,703 INFO L168 Benchmark]: Toolchain (without parser) took 404517.57 ms. Allocated memory was 52.4 MB in the beginning and 861.9 MB in the end (delta: 809.5 MB). Free memory was 27.1 MB in the beginning and 495.0 MB in the end (delta: -468.0 MB). Peak memory consumption was 340.5 MB. Max. memory is 16.1 GB. [2021-09-22 14:26:44,703 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 52.4 MB. Free memory was 34.1 MB in the beginning and 34.1 MB in the end (delta: 24.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-09-22 14:26:44,704 INFO L168 Benchmark]: CACSL2BoogieTranslator took 519.96 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 26.8 MB in the beginning and 45.0 MB in the end (delta: -18.2 MB). Peak memory consumption was 11.4 MB. Max. memory is 16.1 GB. [2021-09-22 14:26:44,705 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.21 ms. Allocated memory is still 62.9 MB. Free memory was 45.0 MB in the beginning and 42.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-09-22 14:26:44,705 INFO L168 Benchmark]: Boogie Preprocessor took 24.90 ms. Allocated memory is still 62.9 MB. Free memory was 42.4 MB in the beginning and 40.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-09-22 14:26:44,707 INFO L168 Benchmark]: RCFGBuilder took 502.91 ms. Allocated memory is still 62.9 MB. Free memory was 40.8 MB in the beginning and 42.9 MB in the end (delta: -2.0 MB). Peak memory consumption was 16.5 MB. Max. memory is 16.1 GB. [2021-09-22 14:26:44,707 INFO L168 Benchmark]: TraceAbstraction took 403381.71 ms. Allocated memory was 62.9 MB in the beginning and 861.9 MB in the end (delta: 799.0 MB). Free memory was 42.3 MB in the beginning and 497.6 MB in the end (delta: -455.4 MB). Peak memory consumption was 344.1 MB. Max. memory is 16.1 GB. [2021-09-22 14:26:44,707 INFO L168 Benchmark]: Witness Printer took 38.20 ms. Allocated memory is still 861.9 MB. Free memory was 497.6 MB in the beginning and 495.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-09-22 14:26:44,708 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 52.4 MB. Free memory was 34.1 MB in the beginning and 34.1 MB in the end (delta: 24.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 519.96 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 26.8 MB in the beginning and 45.0 MB in the end (delta: -18.2 MB). Peak memory consumption was 11.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.21 ms. Allocated memory is still 62.9 MB. Free memory was 45.0 MB in the beginning and 42.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.90 ms. Allocated memory is still 62.9 MB. Free memory was 42.4 MB in the beginning and 40.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 502.91 ms. Allocated memory is still 62.9 MB. Free memory was 40.8 MB in the beginning and 42.9 MB in the end (delta: -2.0 MB). Peak memory consumption was 16.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 403381.71 ms. Allocated memory was 62.9 MB in the beginning and 861.9 MB in the end (delta: 799.0 MB). Free memory was 42.3 MB in the beginning and 497.6 MB in the end (delta: -455.4 MB). Peak memory consumption was 344.1 MB. Max. memory is 16.1 GB. * Witness Printer took 38.20 ms. Allocated memory is still 861.9 MB. Free memory was 497.6 MB in the beginning and 495.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6192.8ms, 149 PlacesBefore, 38 PlacesAfterwards, 152 TransitionsBefore, 36 TransitionsAfterwards, 6156 CoEnabledTransitionPairs, 6 FixpointIterations, 37 TrivialSequentialCompositions, 80 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 20 ConcurrentYvCompositions, 5 ChoiceCompositions, 142 TotalNumberOfCompositions, 8550 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6575, positive: 6406, positive conditional: 0, positive unconditional: 6406, negative: 169, negative conditional: 0, negative unconditional: 169, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 4428, positive: 4372, positive conditional: 0, positive unconditional: 4372, negative: 56, negative conditional: 0, negative unconditional: 56, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 4428, positive: 4358, positive conditional: 0, positive unconditional: 4358, negative: 70, negative conditional: 0, negative unconditional: 70, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 70, positive: 14, positive conditional: 0, positive unconditional: 14, negative: 56, negative conditional: 0, negative unconditional: 56, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 126, positive: 25, positive conditional: 0, positive unconditional: 25, negative: 101, negative conditional: 0, negative unconditional: 101, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 6575, positive: 2034, positive conditional: 0, positive unconditional: 2034, negative: 113, negative conditional: 0, negative unconditional: 113, unknown: 4428, unknown conditional: 0, unknown unconditional: 4428] , Statistics on independence cache: Total cache size (in pairs): 273, Positive cache size: 249, Positive conditional cache size: 0, Positive unconditional cache size: 249, Negative cache size: 24, Negative conditional cache size: 0, Negative unconditional cache size: 24 - 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: 941]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 941]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 234 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 403181.6ms, OverallIterations: 48, TraceHistogramMax: 6, EmptinessCheckTime: 88.6ms, AutomataDifference: 223500.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 6255.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 3776 SDtfs, 18224 SDslu, 71385 SDs, 0 SdLazy, 111503 SolverSat, 4644 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 51267.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4905 GetRequests, 1751 SyntacticMatches, 143 SemanticMatches, 3011 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86715 ImplicationChecksByTransitivity, 229123.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1379occurred in iteration=26, InterpolantAutomatonStates: 1847, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 814.0ms AutomataMinimizationTime, 48 MinimizatonAttempts, 16128 StatesRemovedByMinimization, 44 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 790.3ms SsaConstructionTime, 4446.8ms SatisfiabilityAnalysisTime, 116632.2ms InterpolantComputationTime, 4476 NumberOfCodeBlocks, 4462 NumberOfCodeBlocksAsserted, 158 NumberOfCheckSat, 4387 ConstructedInterpolants, 2 QuantifiedInterpolants, 99712 SizeOfPredicates, 1523 NumberOfNonLiveVariables, 15468 ConjunctsInSsa, 3009 ConjunctsInUnsatCore, 89 InterpolantComputations, 9 PerfectInterpolantSequences, 1178/5662 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-09-22 14:26:44,774 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...