./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e19ca921 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/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 13ad8bc9cfa3954c0bae4db0509cb11733a45600a9e4ff56ca5bdd4aceeb1fc0 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 00:06:44,526 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 00:06:44,528 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 00:06:44,565 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 00:06:44,565 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 00:06:44,566 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 00:06:44,567 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 00:06:44,568 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 00:06:44,569 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 00:06:44,570 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 00:06:44,570 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 00:06:44,571 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 00:06:44,571 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 00:06:44,572 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 00:06:44,573 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 00:06:44,573 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 00:06:44,574 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 00:06:44,574 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 00:06:44,577 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 00:06:44,578 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 00:06:44,580 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 00:06:44,584 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 00:06:44,584 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 00:06:44,585 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 00:06:44,587 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 00:06:44,589 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 00:06:44,590 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 00:06:44,590 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 00:06:44,591 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 00:06:44,592 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 00:06:44,592 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 00:06:44,593 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 00:06:44,594 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 00:06:44,595 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 00:06:44,596 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 00:06:44,596 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 00:06:44,597 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 00:06:44,597 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 00:06:44,597 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 00:06:44,598 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 00:06:44,599 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 00:06:44,599 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-22 00:06:44,616 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 00:06:44,619 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 00:06:44,619 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 00:06:44,619 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 00:06:44,620 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 00:06:44,620 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 00:06:44,621 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 00:06:44,621 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 00:06:44,621 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 00:06:44,621 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 00:06:44,622 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 00:06:44,622 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-22 00:06:44,622 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 00:06:44,622 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 00:06:44,622 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 00:06:44,622 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-22 00:06:44,622 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-22 00:06:44,623 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-22 00:06:44,623 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 00:06:44,623 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-22 00:06:44,623 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 00:06:44,623 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 00:06:44,624 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 00:06:44,624 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 00:06:44,624 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 00:06:44,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 00:06:44,624 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 00:06:44,624 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 00:06:44,625 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 00:06:44,625 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 00:06:44,625 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 00:06:44,625 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 13ad8bc9cfa3954c0bae4db0509cb11733a45600a9e4ff56ca5bdd4aceeb1fc0 [2021-12-22 00:06:44,835 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 00:06:44,861 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 00:06:44,863 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 00:06:44,864 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 00:06:44,865 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 00:06:44,866 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2.c [2021-12-22 00:06:44,915 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/169f912da/676f3571e2cd434296ee07a8a53c6c93/FLAGfc5dfa68b [2021-12-22 00:06:45,227 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 00:06:45,227 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2.c [2021-12-22 00:06:45,231 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/169f912da/676f3571e2cd434296ee07a8a53c6c93/FLAGfc5dfa68b [2021-12-22 00:06:45,685 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/169f912da/676f3571e2cd434296ee07a8a53c6c93 [2021-12-22 00:06:45,687 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 00:06:45,688 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 00:06:45,689 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 00:06:45,689 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 00:06:45,691 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 00:06:45,692 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:06:45" (1/1) ... [2021-12-22 00:06:45,692 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a6d2af6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:06:45, skipping insertion in model container [2021-12-22 00:06:45,692 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:06:45" (1/1) ... [2021-12-22 00:06:45,696 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 00:06:45,704 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 00:06:45,783 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 00:06:45,788 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 00:06:45,803 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 00:06:45,811 INFO L208 MainTranslator]: Completed translation [2021-12-22 00:06:45,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:06:45 WrapperNode [2021-12-22 00:06:45,811 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 00:06:45,812 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 00:06:45,812 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 00:06:45,812 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 00:06:45,818 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:06:45" (1/1) ... [2021-12-22 00:06:45,822 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:06:45" (1/1) ... [2021-12-22 00:06:45,834 INFO L137 Inliner]: procedures = 9, calls = 17, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 87 [2021-12-22 00:06:45,835 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 00:06:45,835 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 00:06:45,835 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 00:06:45,835 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 00:06:45,840 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:06:45" (1/1) ... [2021-12-22 00:06:45,841 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:06:45" (1/1) ... [2021-12-22 00:06:45,842 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:06:45" (1/1) ... [2021-12-22 00:06:45,842 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:06:45" (1/1) ... [2021-12-22 00:06:45,845 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:06:45" (1/1) ... [2021-12-22 00:06:45,848 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:06:45" (1/1) ... [2021-12-22 00:06:45,848 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:06:45" (1/1) ... [2021-12-22 00:06:45,850 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 00:06:45,850 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 00:06:45,850 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 00:06:45,851 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 00:06:45,851 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:06:45" (1/1) ... [2021-12-22 00:06:45,857 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 00:06:45,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 00:06:45,880 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) [2021-12-22 00:06:45,886 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 [2021-12-22 00:06:45,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-22 00:06:45,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 00:06:45,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 00:06:45,907 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-22 00:06:45,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 00:06:45,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 00:06:45,950 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 00:06:45,951 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 00:06:46,109 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 00:06:46,113 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 00:06:46,114 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-12-22 00:06:46,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:06:46 BoogieIcfgContainer [2021-12-22 00:06:46,115 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 00:06:46,116 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 00:06:46,116 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 00:06:46,124 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 00:06:46,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 12:06:45" (1/3) ... [2021-12-22 00:06:46,125 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65ec7fd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:06:46, skipping insertion in model container [2021-12-22 00:06:46,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:06:45" (2/3) ... [2021-12-22 00:06:46,125 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65ec7fd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:06:46, skipping insertion in model container [2021-12-22 00:06:46,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:06:46" (3/3) ... [2021-12-22 00:06:46,126 INFO L111 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength2.c [2021-12-22 00:06:46,130 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 00:06:46,133 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-12-22 00:06:46,183 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 00:06:46,188 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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 [2021-12-22 00:06:46,188 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-12-22 00:06:46,205 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 28 states have (on average 1.75) internal successors, (49), 39 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) [2021-12-22 00:06:46,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-22 00:06:46,216 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:06:46,217 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-22 00:06:46,217 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-12-22 00:06:46,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:06:46,225 INFO L85 PathProgramCache]: Analyzing trace with hash 28698921, now seen corresponding path program 1 times [2021-12-22 00:06:46,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:06:46,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735069491] [2021-12-22 00:06:46,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:06:46,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:06:46,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:06:46,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:06:46,405 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:06:46,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735069491] [2021-12-22 00:06:46,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735069491] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:06:46,406 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:06:46,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 00:06:46,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967980409] [2021-12-22 00:06:46,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:06:46,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 00:06:46,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:06:46,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 00:06:46,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 00:06:46,433 INFO L87 Difference]: Start difference. First operand has 40 states, 28 states have (on average 1.75) internal successors, (49), 39 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) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:06:46,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:06:46,509 INFO L93 Difference]: Finished difference Result 69 states and 76 transitions. [2021-12-22 00:06:46,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 00:06:46,511 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2021-12-22 00:06:46,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:06:46,516 INFO L225 Difference]: With dead ends: 69 [2021-12-22 00:06:46,517 INFO L226 Difference]: Without dead ends: 65 [2021-12-22 00:06:46,519 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 00:06:46,521 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 69 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 00:06:46,522 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 84 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 00:06:46,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-12-22 00:06:46,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 39. [2021-12-22 00:06:46,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 28 states have (on average 1.5357142857142858) internal successors, (43), 38 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) [2021-12-22 00:06:46,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2021-12-22 00:06:46,548 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 5 [2021-12-22 00:06:46,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:06:46,549 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2021-12-22 00:06:46,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:06:46,549 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2021-12-22 00:06:46,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-22 00:06:46,550 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:06:46,550 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:06:46,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 00:06:46,550 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-12-22 00:06:46,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:06:46,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1809811544, now seen corresponding path program 1 times [2021-12-22 00:06:46,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:06:46,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532920496] [2021-12-22 00:06:46,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:06:46,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:06:46,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:06:46,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:06:46,630 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:06:46,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532920496] [2021-12-22 00:06:46,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532920496] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:06:46,630 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:06:46,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 00:06:46,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828765727] [2021-12-22 00:06:46,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:06:46,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 00:06:46,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:06:46,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 00:06:46,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 00:06:46,633 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:06:46,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:06:46,707 INFO L93 Difference]: Finished difference Result 70 states and 77 transitions. [2021-12-22 00:06:46,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 00:06:46,708 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2021-12-22 00:06:46,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:06:46,710 INFO L225 Difference]: With dead ends: 70 [2021-12-22 00:06:46,710 INFO L226 Difference]: Without dead ends: 70 [2021-12-22 00:06:46,711 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-22 00:06:46,715 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 81 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 00:06:46,715 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 116 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 00:06:46,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-12-22 00:06:46,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 41. [2021-12-22 00:06:46,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 30 states have (on average 1.5) internal successors, (45), 40 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:06:46,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2021-12-22 00:06:46,725 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 7 [2021-12-22 00:06:46,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:06:46,725 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2021-12-22 00:06:46,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:06:46,726 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2021-12-22 00:06:46,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-22 00:06:46,726 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:06:46,726 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:06:46,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 00:06:46,727 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-12-22 00:06:46,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:06:46,730 INFO L85 PathProgramCache]: Analyzing trace with hash -489510905, now seen corresponding path program 1 times [2021-12-22 00:06:46,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:06:46,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589316358] [2021-12-22 00:06:46,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:06:46,731 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:06:46,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:06:46,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:06:46,789 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:06:46,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589316358] [2021-12-22 00:06:46,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589316358] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:06:46,791 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:06:46,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 00:06:46,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580480660] [2021-12-22 00:06:46,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:06:46,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 00:06:46,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:06:46,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 00:06:46,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 00:06:46,793 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:06:46,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:06:46,829 INFO L93 Difference]: Finished difference Result 75 states and 82 transitions. [2021-12-22 00:06:46,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 00:06:46,830 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2021-12-22 00:06:46,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:06:46,830 INFO L225 Difference]: With dead ends: 75 [2021-12-22 00:06:46,830 INFO L226 Difference]: Without dead ends: 75 [2021-12-22 00:06:46,830 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-22 00:06:46,835 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 61 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 00:06:46,837 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 152 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 00:06:46,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-12-22 00:06:46,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 45. [2021-12-22 00:06:46,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 34 states have (on average 1.4705882352941178) internal successors, (50), 44 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:06:46,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2021-12-22 00:06:46,842 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 11 [2021-12-22 00:06:46,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:06:46,843 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2021-12-22 00:06:46,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:06:46,843 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2021-12-22 00:06:46,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-22 00:06:46,843 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:06:46,844 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:06:46,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 00:06:46,844 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-12-22 00:06:46,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:06:46,845 INFO L85 PathProgramCache]: Analyzing trace with hash -489508983, now seen corresponding path program 1 times [2021-12-22 00:06:46,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:06:46,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669320857] [2021-12-22 00:06:46,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:06:46,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:06:46,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:06:46,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:06:46,914 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:06:46,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669320857] [2021-12-22 00:06:46,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669320857] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:06:46,914 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:06:46,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 00:06:46,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784306728] [2021-12-22 00:06:46,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:06:46,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 00:06:46,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:06:46,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 00:06:46,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-22 00:06:46,916 INFO L87 Difference]: Start difference. First operand 45 states and 50 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:06:46,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:06:46,942 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2021-12-22 00:06:46,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 00:06:46,942 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2021-12-22 00:06:46,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:06:46,943 INFO L225 Difference]: With dead ends: 43 [2021-12-22 00:06:46,943 INFO L226 Difference]: Without dead ends: 43 [2021-12-22 00:06:46,943 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-22 00:06:46,944 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 46 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 00:06:46,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 31 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 00:06:46,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-12-22 00:06:46,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-12-22 00:06:46,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 34 states have (on average 1.411764705882353) internal successors, (48), 42 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:06:46,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2021-12-22 00:06:46,947 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 11 [2021-12-22 00:06:46,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:06:46,947 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2021-12-22 00:06:46,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:06:46,947 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2021-12-22 00:06:46,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-22 00:06:46,948 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:06:46,948 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:06:46,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-22 00:06:46,948 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-12-22 00:06:46,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:06:46,948 INFO L85 PathProgramCache]: Analyzing trace with hash -489508982, now seen corresponding path program 1 times [2021-12-22 00:06:46,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:06:46,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048943356] [2021-12-22 00:06:46,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:06:46,949 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:06:46,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:06:47,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:06:47,046 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:06:47,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048943356] [2021-12-22 00:06:47,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048943356] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:06:47,046 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:06:47,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 00:06:47,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498554250] [2021-12-22 00:06:47,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:06:47,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 00:06:47,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:06:47,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 00:06:47,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 00:06:47,049 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:06:47,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:06:47,102 INFO L93 Difference]: Finished difference Result 50 states and 55 transitions. [2021-12-22 00:06:47,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 00:06:47,102 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2021-12-22 00:06:47,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:06:47,103 INFO L225 Difference]: With dead ends: 50 [2021-12-22 00:06:47,103 INFO L226 Difference]: Without dead ends: 50 [2021-12-22 00:06:47,103 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-12-22 00:06:47,104 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 8 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 00:06:47,104 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 69 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 00:06:47,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-12-22 00:06:47,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2021-12-22 00:06:47,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 39 states have (on average 1.358974358974359) internal successors, (53), 47 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:06:47,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 53 transitions. [2021-12-22 00:06:47,110 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 53 transitions. Word has length 11 [2021-12-22 00:06:47,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:06:47,110 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 53 transitions. [2021-12-22 00:06:47,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:06:47,111 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 53 transitions. [2021-12-22 00:06:47,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-22 00:06:47,114 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:06:47,114 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:06:47,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-22 00:06:47,114 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-12-22 00:06:47,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:06:47,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1675839934, now seen corresponding path program 1 times [2021-12-22 00:06:47,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:06:47,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521477511] [2021-12-22 00:06:47,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:06:47,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:06:47,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:06:47,172 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:06:47,172 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:06:47,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521477511] [2021-12-22 00:06:47,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521477511] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:06:47,173 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:06:47,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 00:06:47,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019992131] [2021-12-22 00:06:47,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:06:47,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 00:06:47,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:06:47,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 00:06:47,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 00:06:47,174 INFO L87 Difference]: Start difference. First operand 48 states and 53 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 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) [2021-12-22 00:06:47,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:06:47,200 INFO L93 Difference]: Finished difference Result 47 states and 52 transitions. [2021-12-22 00:06:47,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 00:06:47,201 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 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 [2021-12-22 00:06:47,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:06:47,202 INFO L225 Difference]: With dead ends: 47 [2021-12-22 00:06:47,202 INFO L226 Difference]: Without dead ends: 47 [2021-12-22 00:06:47,202 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 00:06:47,204 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 44 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 00:06:47,205 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 36 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 00:06:47,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-12-22 00:06:47,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2021-12-22 00:06:47,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 39 states have (on average 1.3333333333333333) internal successors, (52), 46 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) [2021-12-22 00:06:47,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 52 transitions. [2021-12-22 00:06:47,216 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 52 transitions. Word has length 16 [2021-12-22 00:06:47,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:06:47,217 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 52 transitions. [2021-12-22 00:06:47,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 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) [2021-12-22 00:06:47,217 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 52 transitions. [2021-12-22 00:06:47,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-22 00:06:47,217 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:06:47,217 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:06:47,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-22 00:06:47,218 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-12-22 00:06:47,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:06:47,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1675839933, now seen corresponding path program 1 times [2021-12-22 00:06:47,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:06:47,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380177734] [2021-12-22 00:06:47,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:06:47,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:06:47,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:06:47,297 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:06:47,297 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:06:47,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380177734] [2021-12-22 00:06:47,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380177734] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 00:06:47,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194981317] [2021-12-22 00:06:47,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:06:47,298 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 00:06:47,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 00:06:47,300 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) [2021-12-22 00:06:47,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-22 00:06:47,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:06:47,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 27 conjunts are in the unsatisfiable core [2021-12-22 00:06:47,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:06:47,424 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2021-12-22 00:06:47,475 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-22 00:06:47,477 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 18 [2021-12-22 00:06:47,580 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2021-12-22 00:06:47,670 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-22 00:06:47,671 INFO L387 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 11 treesize of output 11 [2021-12-22 00:06:47,737 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-22 00:06:47,737 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 18 [2021-12-22 00:06:47,796 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:06:47,797 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 00:06:49,130 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_foo_~n#1_3| Int) (v_ArrVal_54 Int)) (or (and (<= 0 |c_ULTIMATE.start_main_~#b~0#1.offset|) (forall ((|v_ULTIMATE.start_foo_~#a~0#1.base_12| Int)) (<= (+ |c_ULTIMATE.start_main_~#b~0#1.offset| 4) (select (store |c_#length| |v_ULTIMATE.start_foo_~#a~0#1.base_12| v_ArrVal_54) |c_ULTIMATE.start_main_~#b~0#1.base|)))) (not (<= (* |v_ULTIMATE.start_foo_~n#1_3| 4) v_ArrVal_54)) (< |v_ULTIMATE.start_foo_~n#1_3| |c_ULTIMATE.start_main_~i~2#1|))) is different from false [2021-12-22 00:06:49,646 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_foo_~n#1_3| Int) (v_ArrVal_54 Int)) (or (and (<= 0 |c_ULTIMATE.start_main_~#b~0#1.offset|) (forall ((|v_ULTIMATE.start_foo_~#a~0#1.base_12| Int)) (<= (+ |c_ULTIMATE.start_main_~#b~0#1.offset| 4) (select (store |c_#length| |v_ULTIMATE.start_foo_~#a~0#1.base_12| v_ArrVal_54) |c_ULTIMATE.start_main_~#b~0#1.base|)))) (not (<= (* |v_ULTIMATE.start_foo_~n#1_3| 4) v_ArrVal_54)) (< |v_ULTIMATE.start_foo_~n#1_3| (+ |c_ULTIMATE.start_main_~i~2#1| 1)))) is different from false [2021-12-22 00:06:52,058 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 10 treesize of output 8 [2021-12-22 00:06:55,060 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_foo_~#a~0#1.base_14| Int) (|v_ULTIMATE.start_foo_~n#1_3| Int) (v_ArrVal_54 Int)) (or (not (<= (* |v_ULTIMATE.start_foo_~n#1_3| 4) v_ArrVal_54)) (= |v_ULTIMATE.start_foo_~#a~0#1.base_14| |c_ULTIMATE.start_main_~#b~0#1.base|) (and (forall ((|v_ULTIMATE.start_foo_~#a~0#1.base_12| Int) (v_ArrVal_52 Int)) (<= (+ |c_ULTIMATE.start_main_~#b~0#1.offset| 4) (select (store (store |c_#length| |v_ULTIMATE.start_foo_~#a~0#1.base_14| v_ArrVal_52) |v_ULTIMATE.start_foo_~#a~0#1.base_12| v_ArrVal_54) |c_ULTIMATE.start_main_~#b~0#1.base|))) (<= 0 |c_ULTIMATE.start_main_~#b~0#1.offset|)) (< |v_ULTIMATE.start_foo_~n#1_3| (+ |c_ULTIMATE.start_main_~i~2#1| 1)))) is different from false [2021-12-22 00:06:55,084 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-12-22 00:06:55,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [194981317] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 00:06:55,085 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 00:06:55,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 7] total 15 [2021-12-22 00:06:55,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728358075] [2021-12-22 00:06:55,086 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 00:06:55,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-22 00:06:55,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:06:55,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-22 00:06:55,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=122, Unknown=3, NotChecked=72, Total=240 [2021-12-22 00:06:55,087 INFO L87 Difference]: Start difference. First operand 47 states and 52 transitions. Second operand has 16 states, 15 states have (on average 2.933333333333333) internal successors, (44), 16 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:06:57,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:06:57,397 INFO L93 Difference]: Finished difference Result 102 states and 120 transitions. [2021-12-22 00:06:57,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-22 00:06:57,397 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.933333333333333) internal successors, (44), 16 states have internal predecessors, (44), 0 states have call successors, (0), 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 [2021-12-22 00:06:57,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:06:57,398 INFO L225 Difference]: With dead ends: 102 [2021-12-22 00:06:57,399 INFO L226 Difference]: Without dead ends: 102 [2021-12-22 00:06:57,399 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 22 SyntacticMatches, 6 SemanticMatches, 21 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=95, Invalid=294, Unknown=3, NotChecked=114, Total=506 [2021-12-22 00:06:57,399 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 87 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 299 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 00:06:57,399 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 166 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 98 Invalid, 0 Unknown, 299 Unchecked, 0.1s Time] [2021-12-22 00:06:57,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-12-22 00:06:57,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 71. [2021-12-22 00:06:57,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 63 states have (on average 1.3968253968253967) internal successors, (88), 70 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) [2021-12-22 00:06:57,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 88 transitions. [2021-12-22 00:06:57,402 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 88 transitions. Word has length 16 [2021-12-22 00:06:57,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:06:57,402 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 88 transitions. [2021-12-22 00:06:57,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.933333333333333) internal successors, (44), 16 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:06:57,402 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 88 transitions. [2021-12-22 00:06:57,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-22 00:06:57,403 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:06:57,403 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:06:57,422 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-22 00:06:57,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 00:06:57,612 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-12-22 00:06:57,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:06:57,612 INFO L85 PathProgramCache]: Analyzing trace with hash -411440119, now seen corresponding path program 1 times [2021-12-22 00:06:57,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:06:57,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005003016] [2021-12-22 00:06:57,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:06:57,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:06:57,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:06:57,643 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:06:57,643 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:06:57,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005003016] [2021-12-22 00:06:57,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005003016] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 00:06:57,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590913902] [2021-12-22 00:06:57,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:06:57,644 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 00:06:57,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 00:06:57,645 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) [2021-12-22 00:06:57,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-22 00:06:57,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:06:57,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-22 00:06:57,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:06:57,707 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:06:57,707 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 00:06:57,738 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:06:57,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [590913902] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 00:06:57,739 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 00:06:57,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-12-22 00:06:57,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107733549] [2021-12-22 00:06:57,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 00:06:57,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 00:06:57,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:06:57,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 00:06:57,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-12-22 00:06:57,740 INFO L87 Difference]: Start difference. First operand 71 states and 88 transitions. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:06:57,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:06:57,762 INFO L93 Difference]: Finished difference Result 161 states and 199 transitions. [2021-12-22 00:06:57,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 00:06:57,763 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 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 [2021-12-22 00:06:57,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:06:57,763 INFO L225 Difference]: With dead ends: 161 [2021-12-22 00:06:57,763 INFO L226 Difference]: Without dead ends: 161 [2021-12-22 00:06:57,764 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-12-22 00:06:57,764 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 118 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 00:06:57,765 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 101 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 00:06:57,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-12-22 00:06:57,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 149. [2021-12-22 00:06:57,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 141 states have (on average 1.4113475177304964) internal successors, (199), 148 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:06:57,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 199 transitions. [2021-12-22 00:06:57,775 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 199 transitions. Word has length 17 [2021-12-22 00:06:57,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:06:57,775 INFO L470 AbstractCegarLoop]: Abstraction has 149 states and 199 transitions. [2021-12-22 00:06:57,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:06:57,775 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 199 transitions. [2021-12-22 00:06:57,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-22 00:06:57,776 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:06:57,776 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:06:57,794 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-22 00:06:57,991 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,SelfDestructingSolverStorable7 [2021-12-22 00:06:57,991 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-12-22 00:06:57,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:06:57,992 INFO L85 PathProgramCache]: Analyzing trace with hash -411430410, now seen corresponding path program 1 times [2021-12-22 00:06:57,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:06:57,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134134336] [2021-12-22 00:06:57,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:06:57,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:06:58,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:06:58,011 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-22 00:06:58,011 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:06:58,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134134336] [2021-12-22 00:06:58,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134134336] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:06:58,012 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:06:58,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 00:06:58,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263471222] [2021-12-22 00:06:58,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:06:58,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 00:06:58,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:06:58,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 00:06:58,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:06:58,013 INFO L87 Difference]: Start difference. First operand 149 states and 199 transitions. Second operand has 3 states, 2 states have (on average 8.5) 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) [2021-12-22 00:06:58,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:06:58,025 INFO L93 Difference]: Finished difference Result 148 states and 194 transitions. [2021-12-22 00:06:58,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 00:06:58,025 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.5) 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 [2021-12-22 00:06:58,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:06:58,026 INFO L225 Difference]: With dead ends: 148 [2021-12-22 00:06:58,026 INFO L226 Difference]: Without dead ends: 148 [2021-12-22 00:06:58,026 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:06:58,026 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 16 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 00:06:58,027 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 39 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 00:06:58,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-12-22 00:06:58,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2021-12-22 00:06:58,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 141 states have (on average 1.375886524822695) internal successors, (194), 147 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:06:58,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 194 transitions. [2021-12-22 00:06:58,029 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 194 transitions. Word has length 17 [2021-12-22 00:06:58,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:06:58,030 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 194 transitions. [2021-12-22 00:06:58,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.5) 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) [2021-12-22 00:06:58,030 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 194 transitions. [2021-12-22 00:06:58,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-22 00:06:58,030 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:06:58,030 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:06:58,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-22 00:06:58,031 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-12-22 00:06:58,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:06:58,031 INFO L85 PathProgramCache]: Analyzing trace with hash -411430409, now seen corresponding path program 1 times [2021-12-22 00:06:58,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:06:58,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899660948] [2021-12-22 00:06:58,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:06:58,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:06:58,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:06:58,087 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:06:58,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:06:58,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899660948] [2021-12-22 00:06:58,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899660948] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 00:06:58,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650042614] [2021-12-22 00:06:58,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:06:58,088 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 00:06:58,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 00:06:58,104 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) [2021-12-22 00:06:58,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-22 00:06:58,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:06:58,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-22 00:06:58,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:06:58,187 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2021-12-22 00:06:58,205 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:06:58,205 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 00:06:58,240 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:06:58,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [650042614] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 00:06:58,240 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 00:06:58,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2021-12-22 00:06:58,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932729634] [2021-12-22 00:06:58,241 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 00:06:58,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 00:06:58,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:06:58,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 00:06:58,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-22 00:06:58,242 INFO L87 Difference]: Start difference. First operand 148 states and 194 transitions. Second operand has 7 states, 6 states have (on average 5.5) internal successors, (33), 7 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) [2021-12-22 00:06:58,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:06:58,320 INFO L93 Difference]: Finished difference Result 230 states and 302 transitions. [2021-12-22 00:06:58,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 00:06:58,320 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.5) internal successors, (33), 7 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 17 [2021-12-22 00:06:58,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:06:58,321 INFO L225 Difference]: With dead ends: 230 [2021-12-22 00:06:58,321 INFO L226 Difference]: Without dead ends: 230 [2021-12-22 00:06:58,322 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-12-22 00:06:58,322 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 94 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 00:06:58,322 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 85 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 00:06:58,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2021-12-22 00:06:58,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 157. [2021-12-22 00:06:58,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 150 states have (on average 1.38) internal successors, (207), 156 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:06:58,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 207 transitions. [2021-12-22 00:06:58,325 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 207 transitions. Word has length 17 [2021-12-22 00:06:58,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:06:58,325 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 207 transitions. [2021-12-22 00:06:58,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.5) internal successors, (33), 7 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) [2021-12-22 00:06:58,325 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 207 transitions. [2021-12-22 00:06:58,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-22 00:06:58,326 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:06:58,326 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:06:58,344 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-22 00:06:58,539 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 [2021-12-22 00:06:58,539 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-12-22 00:06:58,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:06:58,540 INFO L85 PathProgramCache]: Analyzing trace with hash 130511665, now seen corresponding path program 1 times [2021-12-22 00:06:58,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:06:58,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078561632] [2021-12-22 00:06:58,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:06:58,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:06:58,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:06:58,559 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-22 00:06:58,559 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:06:58,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078561632] [2021-12-22 00:06:58,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078561632] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:06:58,559 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:06:58,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 00:06:58,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203016941] [2021-12-22 00:06:58,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:06:58,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 00:06:58,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:06:58,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 00:06:58,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 00:06:58,561 INFO L87 Difference]: Start difference. First operand 157 states and 207 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:06:58,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:06:58,581 INFO L93 Difference]: Finished difference Result 156 states and 202 transitions. [2021-12-22 00:06:58,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 00:06:58,581 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2021-12-22 00:06:58,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:06:58,582 INFO L225 Difference]: With dead ends: 156 [2021-12-22 00:06:58,582 INFO L226 Difference]: Without dead ends: 156 [2021-12-22 00:06:58,582 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 00:06:58,582 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 23 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 00:06:58,583 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 53 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 00:06:58,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-12-22 00:06:58,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2021-12-22 00:06:58,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 150 states have (on average 1.3466666666666667) internal successors, (202), 155 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:06:58,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 202 transitions. [2021-12-22 00:06:58,585 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 202 transitions. Word has length 18 [2021-12-22 00:06:58,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:06:58,585 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 202 transitions. [2021-12-22 00:06:58,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:06:58,586 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 202 transitions. [2021-12-22 00:06:58,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-22 00:06:58,586 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:06:58,586 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:06:58,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-22 00:06:58,586 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-12-22 00:06:58,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:06:58,587 INFO L85 PathProgramCache]: Analyzing trace with hash 130511666, now seen corresponding path program 1 times [2021-12-22 00:06:58,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:06:58,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883964208] [2021-12-22 00:06:58,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:06:58,587 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:06:58,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:06:58,632 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:06:58,633 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:06:58,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883964208] [2021-12-22 00:06:58,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883964208] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 00:06:58,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439282724] [2021-12-22 00:06:58,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:06:58,633 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 00:06:58,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 00:06:58,634 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) [2021-12-22 00:06:58,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-22 00:06:58,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:06:58,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-22 00:06:58,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:06:58,721 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:06:58,721 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 00:06:58,760 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:06:58,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1439282724] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 00:06:58,761 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 00:06:58,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2021-12-22 00:06:58,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503062484] [2021-12-22 00:06:58,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 00:06:58,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 00:06:58,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:06:58,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 00:06:58,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-12-22 00:06:58,762 INFO L87 Difference]: Start difference. First operand 156 states and 202 transitions. Second operand has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 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) [2021-12-22 00:06:58,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:06:58,836 INFO L93 Difference]: Finished difference Result 167 states and 207 transitions. [2021-12-22 00:06:58,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 00:06:58,837 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 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 18 [2021-12-22 00:06:58,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:06:58,838 INFO L225 Difference]: With dead ends: 167 [2021-12-22 00:06:58,838 INFO L226 Difference]: Without dead ends: 167 [2021-12-22 00:06:58,838 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-12-22 00:06:58,838 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 63 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 00:06:58,839 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 117 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 00:06:58,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-12-22 00:06:58,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 156. [2021-12-22 00:06:58,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 150 states have (on average 1.3133333333333332) internal successors, (197), 155 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:06:58,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 197 transitions. [2021-12-22 00:06:58,841 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 197 transitions. Word has length 18 [2021-12-22 00:06:58,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:06:58,841 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 197 transitions. [2021-12-22 00:06:58,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 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) [2021-12-22 00:06:58,842 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 197 transitions. [2021-12-22 00:06:58,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-22 00:06:58,842 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:06:58,842 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:06:58,861 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-22 00:06:59,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 00:06:59,059 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-12-22 00:06:59,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:06:59,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1752050598, now seen corresponding path program 1 times [2021-12-22 00:06:59,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:06:59,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652529852] [2021-12-22 00:06:59,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:06:59,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:06:59,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:06:59,106 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:06:59,106 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:06:59,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652529852] [2021-12-22 00:06:59,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652529852] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 00:06:59,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689012729] [2021-12-22 00:06:59,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:06:59,107 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 00:06:59,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 00:06:59,109 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) [2021-12-22 00:06:59,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-22 00:06:59,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:06:59,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-22 00:06:59,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:06:59,225 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:06:59,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 00:06:59,275 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:06:59,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689012729] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 00:06:59,275 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 00:06:59,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2021-12-22 00:06:59,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881456976] [2021-12-22 00:06:59,276 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 00:06:59,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 00:06:59,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:06:59,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 00:06:59,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-12-22 00:06:59,277 INFO L87 Difference]: Start difference. First operand 156 states and 197 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:06:59,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:06:59,381 INFO L93 Difference]: Finished difference Result 156 states and 192 transitions. [2021-12-22 00:06:59,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-22 00:06:59,381 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 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 [2021-12-22 00:06:59,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:06:59,382 INFO L225 Difference]: With dead ends: 156 [2021-12-22 00:06:59,382 INFO L226 Difference]: Without dead ends: 156 [2021-12-22 00:06:59,382 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2021-12-22 00:06:59,383 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 146 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 00:06:59,383 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 109 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 00:06:59,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-12-22 00:06:59,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 154. [2021-12-22 00:06:59,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 148 states have (on average 1.2972972972972974) internal successors, (192), 153 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:06:59,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 192 transitions. [2021-12-22 00:06:59,385 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 192 transitions. Word has length 21 [2021-12-22 00:06:59,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:06:59,385 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 192 transitions. [2021-12-22 00:06:59,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:06:59,385 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 192 transitions. [2021-12-22 00:06:59,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-22 00:06:59,385 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:06:59,385 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:06:59,406 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-22 00:06:59,599 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,SelfDestructingSolverStorable12 [2021-12-22 00:06:59,599 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-12-22 00:06:59,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:06:59,600 INFO L85 PathProgramCache]: Analyzing trace with hash -93493367, now seen corresponding path program 1 times [2021-12-22 00:06:59,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:06:59,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157411834] [2021-12-22 00:06:59,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:06:59,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:06:59,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:06:59,649 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-22 00:06:59,650 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:06:59,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157411834] [2021-12-22 00:06:59,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157411834] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 00:06:59,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180828175] [2021-12-22 00:06:59,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:06:59,650 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 00:06:59,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 00:06:59,662 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) [2021-12-22 00:06:59,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-22 00:06:59,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:06:59,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-22 00:06:59,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:06:59,751 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2021-12-22 00:06:59,789 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-22 00:06:59,790 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 00:06:59,871 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-22 00:06:59,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180828175] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 00:06:59,871 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 00:06:59,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2021-12-22 00:06:59,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876536686] [2021-12-22 00:06:59,872 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 00:06:59,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 00:06:59,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:06:59,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 00:06:59,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-12-22 00:06:59,873 INFO L87 Difference]: Start difference. First operand 154 states and 192 transitions. Second operand has 10 states, 9 states have (on average 5.666666666666667) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:07:00,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:07:00,055 INFO L93 Difference]: Finished difference Result 248 states and 298 transitions. [2021-12-22 00:07:00,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-22 00:07:00,055 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.666666666666667) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-12-22 00:07:00,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:07:00,056 INFO L225 Difference]: With dead ends: 248 [2021-12-22 00:07:00,056 INFO L226 Difference]: Without dead ends: 248 [2021-12-22 00:07:00,058 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306 [2021-12-22 00:07:00,058 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 119 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 00:07:00,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 96 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 00:07:00,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2021-12-22 00:07:00,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 159. [2021-12-22 00:07:00,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 153 states have (on average 1.2875816993464053) internal successors, (197), 158 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:07:00,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 197 transitions. [2021-12-22 00:07:00,065 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 197 transitions. Word has length 23 [2021-12-22 00:07:00,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:07:00,065 INFO L470 AbstractCegarLoop]: Abstraction has 159 states and 197 transitions. [2021-12-22 00:07:00,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.666666666666667) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:07:00,065 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 197 transitions. [2021-12-22 00:07:00,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-22 00:07:00,066 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:07:00,066 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:07:00,083 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-22 00:07:00,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 00:07:00,276 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-12-22 00:07:00,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:07:00,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1409452358, now seen corresponding path program 1 times [2021-12-22 00:07:00,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:07:00,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103049915] [2021-12-22 00:07:00,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:07:00,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:07:00,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:07:00,331 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-22 00:07:00,331 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:07:00,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103049915] [2021-12-22 00:07:00,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103049915] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 00:07:00,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065698445] [2021-12-22 00:07:00,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:07:00,332 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 00:07:00,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 00:07:00,333 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) [2021-12-22 00:07:00,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-22 00:07:00,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:07:00,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-22 00:07:00,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:07:00,454 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-22 00:07:00,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 00:07:00,526 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-22 00:07:00,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2065698445] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 00:07:00,526 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 00:07:00,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 9 [2021-12-22 00:07:00,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551174737] [2021-12-22 00:07:00,527 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 00:07:00,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 00:07:00,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:07:00,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 00:07:00,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-12-22 00:07:00,528 INFO L87 Difference]: Start difference. First operand 159 states and 197 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 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) [2021-12-22 00:07:00,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:07:00,631 INFO L93 Difference]: Finished difference Result 154 states and 187 transitions. [2021-12-22 00:07:00,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-22 00:07:00,632 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 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 27 [2021-12-22 00:07:00,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:07:00,632 INFO L225 Difference]: With dead ends: 154 [2021-12-22 00:07:00,632 INFO L226 Difference]: Without dead ends: 154 [2021-12-22 00:07:00,633 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2021-12-22 00:07:00,633 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 68 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 00:07:00,633 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 128 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 00:07:00,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-12-22 00:07:00,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 144. [2021-12-22 00:07:00,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 138 states have (on average 1.2826086956521738) internal successors, (177), 143 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:07:00,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 177 transitions. [2021-12-22 00:07:00,636 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 177 transitions. Word has length 27 [2021-12-22 00:07:00,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:07:00,636 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 177 transitions. [2021-12-22 00:07:00,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 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) [2021-12-22 00:07:00,636 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 177 transitions. [2021-12-22 00:07:00,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-22 00:07:00,637 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:07:00,637 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:07:00,655 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-22 00:07:00,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 00:07:00,846 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-12-22 00:07:00,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:07:00,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1360755252, now seen corresponding path program 1 times [2021-12-22 00:07:00,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:07:00,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520382795] [2021-12-22 00:07:00,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:07:00,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:07:00,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:07:00,883 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-22 00:07:00,883 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:07:00,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520382795] [2021-12-22 00:07:00,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520382795] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 00:07:00,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825573418] [2021-12-22 00:07:00,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:07:00,884 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 00:07:00,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 00:07:00,885 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) [2021-12-22 00:07:00,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-22 00:07:00,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:07:00,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-22 00:07:00,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:07:01,007 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-22 00:07:01,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 00:07:01,066 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-22 00:07:01,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1825573418] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 00:07:01,067 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 00:07:01,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2021-12-22 00:07:01,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572413429] [2021-12-22 00:07:01,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 00:07:01,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-22 00:07:01,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:07:01,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-22 00:07:01,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-12-22 00:07:01,070 INFO L87 Difference]: Start difference. First operand 144 states and 177 transitions. Second operand has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:07:01,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:07:01,190 INFO L93 Difference]: Finished difference Result 146 states and 174 transitions. [2021-12-22 00:07:01,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-22 00:07:01,190 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 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 [2021-12-22 00:07:01,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:07:01,191 INFO L225 Difference]: With dead ends: 146 [2021-12-22 00:07:01,191 INFO L226 Difference]: Without dead ends: 146 [2021-12-22 00:07:01,191 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2021-12-22 00:07:01,192 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 210 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 00:07:01,192 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [210 Valid, 148 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 00:07:01,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-12-22 00:07:01,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 143. [2021-12-22 00:07:01,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 137 states have (on average 1.27007299270073) internal successors, (174), 142 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:07:01,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 174 transitions. [2021-12-22 00:07:01,195 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 174 transitions. Word has length 27 [2021-12-22 00:07:01,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:07:01,195 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 174 transitions. [2021-12-22 00:07:01,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:07:01,195 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 174 transitions. [2021-12-22 00:07:01,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-22 00:07:01,196 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:07:01,196 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:07:01,214 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-22 00:07:01,407 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,SelfDestructingSolverStorable15 [2021-12-22 00:07:01,407 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-12-22 00:07:01,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:07:01,408 INFO L85 PathProgramCache]: Analyzing trace with hash -144329733, now seen corresponding path program 1 times [2021-12-22 00:07:01,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:07:01,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344903514] [2021-12-22 00:07:01,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:07:01,408 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:07:01,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:07:01,561 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-22 00:07:01,561 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:07:01,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344903514] [2021-12-22 00:07:01,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344903514] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 00:07:01,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [393390049] [2021-12-22 00:07:01,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:07:01,562 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 00:07:01,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 00:07:01,562 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) [2021-12-22 00:07:01,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-22 00:07:01,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:07:01,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 53 conjunts are in the unsatisfiable core [2021-12-22 00:07:01,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:07:01,710 INFO L387 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 11 treesize of output 7 [2021-12-22 00:07:01,806 INFO L353 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-12-22 00:07:01,807 INFO L387 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 23 treesize of output 18 [2021-12-22 00:07:01,912 INFO L387 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 15 treesize of output 7 [2021-12-22 00:07:01,969 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:07:01,969 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 00:07:13,793 INFO L387 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 14 treesize of output 12 [2021-12-22 00:07:13,795 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 26 treesize of output 24 [2021-12-22 00:07:13,904 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:07:13,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [393390049] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 00:07:13,904 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 00:07:13,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 15, 15] total 32 [2021-12-22 00:07:13,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254355829] [2021-12-22 00:07:13,904 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 00:07:13,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-12-22 00:07:13,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:07:13,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-12-22 00:07:13,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=891, Unknown=4, NotChecked=0, Total=992 [2021-12-22 00:07:13,905 INFO L87 Difference]: Start difference. First operand 143 states and 174 transitions. Second operand has 32 states, 32 states have (on average 2.625) internal successors, (84), 32 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:07:14,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:07:14,527 INFO L93 Difference]: Finished difference Result 123 states and 144 transitions. [2021-12-22 00:07:14,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-12-22 00:07:14,528 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.625) internal successors, (84), 32 states have internal predecessors, (84), 0 states have call successors, (0), 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 31 [2021-12-22 00:07:14,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:07:14,528 INFO L225 Difference]: With dead ends: 123 [2021-12-22 00:07:14,528 INFO L226 Difference]: Without dead ends: 123 [2021-12-22 00:07:14,529 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 462 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=349, Invalid=2299, Unknown=4, NotChecked=0, Total=2652 [2021-12-22 00:07:14,529 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 87 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 106 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 00:07:14,530 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 328 Invalid, 600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 461 Invalid, 0 Unknown, 106 Unchecked, 0.2s Time] [2021-12-22 00:07:14,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-12-22 00:07:14,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 120. [2021-12-22 00:07:14,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 114 states have (on average 1.236842105263158) internal successors, (141), 119 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:07:14,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 141 transitions. [2021-12-22 00:07:14,532 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 141 transitions. Word has length 31 [2021-12-22 00:07:14,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:07:14,532 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 141 transitions. [2021-12-22 00:07:14,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.625) internal successors, (84), 32 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:07:14,532 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 141 transitions. [2021-12-22 00:07:14,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-12-22 00:07:14,533 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:07:14,533 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:07:14,551 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-22 00:07:14,751 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,SelfDestructingSolverStorable16 [2021-12-22 00:07:14,752 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-12-22 00:07:14,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:07:14,752 INFO L85 PathProgramCache]: Analyzing trace with hash 2032716941, now seen corresponding path program 1 times [2021-12-22 00:07:14,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:07:14,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281765807] [2021-12-22 00:07:14,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:07:14,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:07:14,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:07:14,862 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-22 00:07:14,862 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:07:14,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281765807] [2021-12-22 00:07:14,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281765807] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 00:07:14,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948912823] [2021-12-22 00:07:14,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:07:14,863 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 00:07:14,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 00:07:14,864 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) [2021-12-22 00:07:14,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-22 00:07:14,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:07:14,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 26 conjunts are in the unsatisfiable core [2021-12-22 00:07:14,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:07:15,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 00:07:15,088 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 19 treesize of output 21 [2021-12-22 00:07:15,095 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-22 00:07:15,095 INFO L387 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 11 treesize of output 11 [2021-12-22 00:07:15,165 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 17 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-22 00:07:15,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 00:07:15,287 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-22 00:07:15,288 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 25 treesize of output 21 [2021-12-22 00:07:15,294 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-22 00:07:15,294 INFO L387 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 13 treesize of output 12 [2021-12-22 00:07:15,427 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 17 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-22 00:07:15,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [948912823] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 00:07:15,427 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 00:07:15,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 17 [2021-12-22 00:07:15,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172247349] [2021-12-22 00:07:15,428 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 00:07:15,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-22 00:07:15,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:07:15,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-22 00:07:15,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2021-12-22 00:07:15,429 INFO L87 Difference]: Start difference. First operand 120 states and 141 transitions. Second operand has 18 states, 17 states have (on average 7.117647058823529) internal successors, (121), 18 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:07:15,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:07:15,682 INFO L93 Difference]: Finished difference Result 200 states and 238 transitions. [2021-12-22 00:07:15,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-22 00:07:15,682 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 7.117647058823529) internal successors, (121), 18 states have internal predecessors, (121), 0 states have call successors, (0), 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 [2021-12-22 00:07:15,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:07:15,683 INFO L225 Difference]: With dead ends: 200 [2021-12-22 00:07:15,683 INFO L226 Difference]: Without dead ends: 200 [2021-12-22 00:07:15,683 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=149, Invalid=501, Unknown=0, NotChecked=0, Total=650 [2021-12-22 00:07:15,684 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 151 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 33 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 00:07:15,684 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 199 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 194 Invalid, 0 Unknown, 33 Unchecked, 0.1s Time] [2021-12-22 00:07:15,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-12-22 00:07:15,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 99. [2021-12-22 00:07:15,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 94 states have (on average 1.1914893617021276) internal successors, (112), 98 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:07:15,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 112 transitions. [2021-12-22 00:07:15,686 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 112 transitions. Word has length 41 [2021-12-22 00:07:15,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:07:15,686 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 112 transitions. [2021-12-22 00:07:15,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 7.117647058823529) internal successors, (121), 18 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:07:15,686 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 112 transitions. [2021-12-22 00:07:15,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-22 00:07:15,687 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:07:15,687 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:07:15,707 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-22 00:07:15,887 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,SelfDestructingSolverStorable17 [2021-12-22 00:07:15,887 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-12-22 00:07:15,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:07:15,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1410284307, now seen corresponding path program 1 times [2021-12-22 00:07:15,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:07:15,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064355099] [2021-12-22 00:07:15,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:07:15,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:07:15,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:07:15,963 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 29 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-22 00:07:15,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:07:15,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064355099] [2021-12-22 00:07:15,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064355099] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 00:07:15,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019160506] [2021-12-22 00:07:15,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:07:15,964 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 00:07:15,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 00:07:15,965 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) [2021-12-22 00:07:15,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-22 00:07:16,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:07:16,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-22 00:07:16,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:07:16,101 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2021-12-22 00:07:16,163 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 15 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-22 00:07:16,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 00:07:16,274 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 15 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-22 00:07:16,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2019160506] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 00:07:16,274 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 00:07:16,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2021-12-22 00:07:16,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870745580] [2021-12-22 00:07:16,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 00:07:16,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-22 00:07:16,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:07:16,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-22 00:07:16,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-12-22 00:07:16,275 INFO L87 Difference]: Start difference. First operand 99 states and 112 transitions. Second operand has 11 states, 10 states have (on average 6.7) internal successors, (67), 11 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) [2021-12-22 00:07:16,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:07:16,408 INFO L93 Difference]: Finished difference Result 126 states and 144 transitions. [2021-12-22 00:07:16,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 00:07:16,409 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 6.7) internal successors, (67), 11 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 42 [2021-12-22 00:07:16,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:07:16,410 INFO L225 Difference]: With dead ends: 126 [2021-12-22 00:07:16,410 INFO L226 Difference]: Without dead ends: 126 [2021-12-22 00:07:16,410 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2021-12-22 00:07:16,410 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 98 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 00:07:16,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 153 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 00:07:16,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-12-22 00:07:16,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 101. [2021-12-22 00:07:16,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 96 states have (on average 1.1875) internal successors, (114), 100 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:07:16,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 114 transitions. [2021-12-22 00:07:16,412 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 114 transitions. Word has length 42 [2021-12-22 00:07:16,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:07:16,412 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 114 transitions. [2021-12-22 00:07:16,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 6.7) internal successors, (67), 11 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) [2021-12-22 00:07:16,412 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 114 transitions. [2021-12-22 00:07:16,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-12-22 00:07:16,413 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:07:16,413 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:07:16,432 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-22 00:07:16,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 00:07:16,613 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-12-22 00:07:16,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:07:16,614 INFO L85 PathProgramCache]: Analyzing trace with hash 183114832, now seen corresponding path program 2 times [2021-12-22 00:07:16,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:07:16,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024104777] [2021-12-22 00:07:16,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:07:16,614 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:07:16,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:07:16,660 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 38 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-22 00:07:16,660 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:07:16,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024104777] [2021-12-22 00:07:16,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024104777] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 00:07:16,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135710002] [2021-12-22 00:07:16,661 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-22 00:07:16,661 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 00:07:16,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 00:07:16,662 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) [2021-12-22 00:07:16,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-22 00:07:16,722 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-22 00:07:16,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 00:07:16,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-22 00:07:16,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:07:16,851 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 10 proven. 32 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-22 00:07:16,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 00:07:16,931 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 10 proven. 32 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-22 00:07:16,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1135710002] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 00:07:16,931 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 00:07:16,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2021-12-22 00:07:16,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890364528] [2021-12-22 00:07:16,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 00:07:16,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-22 00:07:16,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:07:16,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-22 00:07:16,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-12-22 00:07:16,932 INFO L87 Difference]: Start difference. First operand 101 states and 114 transitions. Second operand has 13 states, 13 states have (on average 5.846153846153846) internal successors, (76), 13 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:07:17,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:07:17,100 INFO L93 Difference]: Finished difference Result 118 states and 128 transitions. [2021-12-22 00:07:17,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-22 00:07:17,100 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.846153846153846) internal successors, (76), 13 states have internal predecessors, (76), 0 states have call successors, (0), 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 46 [2021-12-22 00:07:17,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:07:17,101 INFO L225 Difference]: With dead ends: 118 [2021-12-22 00:07:17,101 INFO L226 Difference]: Without dead ends: 118 [2021-12-22 00:07:17,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 86 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=142, Invalid=364, Unknown=0, NotChecked=0, Total=506 [2021-12-22 00:07:17,101 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 311 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 00:07:17,102 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [311 Valid, 167 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 00:07:17,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-12-22 00:07:17,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 99. [2021-12-22 00:07:17,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 94 states have (on average 1.1595744680851063) internal successors, (109), 98 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:07:17,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 109 transitions. [2021-12-22 00:07:17,104 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 109 transitions. Word has length 46 [2021-12-22 00:07:17,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:07:17,104 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 109 transitions. [2021-12-22 00:07:17,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.846153846153846) internal successors, (76), 13 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:07:17,104 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 109 transitions. [2021-12-22 00:07:17,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-12-22 00:07:17,105 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:07:17,105 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2021-12-22 00:07:17,121 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-12-22 00:07:17,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 00:07:17,318 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-12-22 00:07:17,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:07:17,318 INFO L85 PathProgramCache]: Analyzing trace with hash 457132991, now seen corresponding path program 2 times [2021-12-22 00:07:17,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:07:17,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662089189] [2021-12-22 00:07:17,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:07:17,318 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:07:17,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:07:17,371 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 13 proven. 25 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-22 00:07:17,371 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:07:17,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662089189] [2021-12-22 00:07:17,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662089189] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 00:07:17,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60132907] [2021-12-22 00:07:17,372 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-22 00:07:17,372 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 00:07:17,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 00:07:17,373 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) [2021-12-22 00:07:17,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-22 00:07:17,445 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-22 00:07:17,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 00:07:17,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-22 00:07:17,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:07:17,543 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 27 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-22 00:07:17,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 00:07:17,629 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 27 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-22 00:07:17,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [60132907] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 00:07:17,630 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 00:07:17,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2021-12-22 00:07:17,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712634240] [2021-12-22 00:07:17,630 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 00:07:17,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-22 00:07:17,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:07:17,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-22 00:07:17,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-12-22 00:07:17,631 INFO L87 Difference]: Start difference. First operand 99 states and 109 transitions. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:07:17,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:07:17,728 INFO L93 Difference]: Finished difference Result 101 states and 109 transitions. [2021-12-22 00:07:17,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 00:07:17,728 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 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 47 [2021-12-22 00:07:17,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:07:17,729 INFO L225 Difference]: With dead ends: 101 [2021-12-22 00:07:17,729 INFO L226 Difference]: Without dead ends: 101 [2021-12-22 00:07:17,729 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 89 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2021-12-22 00:07:17,729 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 60 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 00:07:17,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 198 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 00:07:17,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-12-22 00:07:17,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 99. [2021-12-22 00:07:17,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 94 states have (on average 1.1382978723404256) internal successors, (107), 98 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) [2021-12-22 00:07:17,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 107 transitions. [2021-12-22 00:07:17,731 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 107 transitions. Word has length 47 [2021-12-22 00:07:17,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:07:17,731 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 107 transitions. [2021-12-22 00:07:17,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:07:17,732 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 107 transitions. [2021-12-22 00:07:17,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-22 00:07:17,732 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:07:17,732 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2021-12-22 00:07:17,750 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-12-22 00:07:17,932 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,SelfDestructingSolverStorable20 [2021-12-22 00:07:17,932 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-12-22 00:07:17,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:07:17,933 INFO L85 PathProgramCache]: Analyzing trace with hash -269976254, now seen corresponding path program 3 times [2021-12-22 00:07:17,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:07:17,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833740305] [2021-12-22 00:07:17,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:07:17,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:07:17,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:07:18,030 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 1 proven. 49 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-22 00:07:18,031 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:07:18,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833740305] [2021-12-22 00:07:18,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833740305] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 00:07:18,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1093451592] [2021-12-22 00:07:18,031 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-22 00:07:18,031 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 00:07:18,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 00:07:18,037 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) [2021-12-22 00:07:18,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-22 00:07:18,109 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-12-22 00:07:18,109 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 00:07:18,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-22 00:07:18,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:07:18,307 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 34 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-12-22 00:07:18,307 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 00:07:18,598 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 38 treesize of output 34 [2021-12-22 00:07:18,663 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 29 proven. 6 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-12-22 00:07:18,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1093451592] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 00:07:18,663 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 00:07:18,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 24 [2021-12-22 00:07:18,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731916605] [2021-12-22 00:07:18,663 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 00:07:18,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-22 00:07:18,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:07:18,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-22 00:07:18,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=517, Unknown=0, NotChecked=0, Total=600 [2021-12-22 00:07:18,664 INFO L87 Difference]: Start difference. First operand 99 states and 107 transitions. Second operand has 25 states, 24 states have (on average 4.375) internal successors, (105), 25 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:07:19,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:07:19,412 INFO L93 Difference]: Finished difference Result 134 states and 147 transitions. [2021-12-22 00:07:19,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-22 00:07:19,414 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 4.375) internal successors, (105), 25 states have internal predecessors, (105), 0 states have call successors, (0), 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 52 [2021-12-22 00:07:19,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:07:19,415 INFO L225 Difference]: With dead ends: 134 [2021-12-22 00:07:19,415 INFO L226 Difference]: Without dead ends: 134 [2021-12-22 00:07:19,415 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=380, Invalid=1600, Unknown=0, NotChecked=0, Total=1980 [2021-12-22 00:07:19,415 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 340 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 00:07:19,416 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [340 Valid, 235 Invalid, 574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 00:07:19,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-12-22 00:07:19,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 96. [2021-12-22 00:07:19,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 92 states have (on average 1.1195652173913044) internal successors, (103), 95 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:07:19,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 103 transitions. [2021-12-22 00:07:19,418 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 103 transitions. Word has length 52 [2021-12-22 00:07:19,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:07:19,418 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 103 transitions. [2021-12-22 00:07:19,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 4.375) internal successors, (105), 25 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:07:19,418 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 103 transitions. [2021-12-22 00:07:19,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-22 00:07:19,418 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:07:19,418 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2021-12-22 00:07:19,435 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-12-22 00:07:19,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 00:07:19,625 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-12-22 00:07:19,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:07:19,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1642790799, now seen corresponding path program 2 times [2021-12-22 00:07:19,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:07:19,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014261425] [2021-12-22 00:07:19,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:07:19,626 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:07:19,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:07:19,683 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 11 proven. 43 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-22 00:07:19,683 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:07:19,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014261425] [2021-12-22 00:07:19,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014261425] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 00:07:19,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708905494] [2021-12-22 00:07:19,684 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-22 00:07:19,684 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 00:07:19,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 00:07:19,685 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) [2021-12-22 00:07:19,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-22 00:07:19,763 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-22 00:07:19,764 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 00:07:19,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-22 00:07:19,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:07:19,869 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 25 proven. 29 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-22 00:07:19,869 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 00:07:19,973 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 25 proven. 29 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-22 00:07:19,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1708905494] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 00:07:19,973 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 00:07:19,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2021-12-22 00:07:19,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159703776] [2021-12-22 00:07:19,973 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 00:07:19,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-22 00:07:19,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:07:19,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-22 00:07:19,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-12-22 00:07:19,974 INFO L87 Difference]: Start difference. First operand 96 states and 103 transitions. Second operand has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 13 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) [2021-12-22 00:07:20,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:07:20,099 INFO L93 Difference]: Finished difference Result 110 states and 117 transitions. [2021-12-22 00:07:20,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-22 00:07:20,099 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 13 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 56 [2021-12-22 00:07:20,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:07:20,100 INFO L225 Difference]: With dead ends: 110 [2021-12-22 00:07:20,100 INFO L226 Difference]: Without dead ends: 110 [2021-12-22 00:07:20,100 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 106 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2021-12-22 00:07:20,100 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 91 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 00:07:20,100 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 252 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 00:07:20,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-12-22 00:07:20,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 104. [2021-12-22 00:07:20,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 100 states have (on average 1.11) internal successors, (111), 103 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:07:20,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 111 transitions. [2021-12-22 00:07:20,102 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 111 transitions. Word has length 56 [2021-12-22 00:07:20,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:07:20,102 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 111 transitions. [2021-12-22 00:07:20,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 13 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) [2021-12-22 00:07:20,103 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 111 transitions. [2021-12-22 00:07:20,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-12-22 00:07:20,104 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:07:20,104 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2021-12-22 00:07:20,122 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-12-22 00:07:20,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 00:07:20,320 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-12-22 00:07:20,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:07:20,320 INFO L85 PathProgramCache]: Analyzing trace with hash 74449076, now seen corresponding path program 3 times [2021-12-22 00:07:20,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:07:20,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873466169] [2021-12-22 00:07:20,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:07:20,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:07:20,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:07:20,542 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-22 00:07:20,542 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:07:20,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873466169] [2021-12-22 00:07:20,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873466169] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 00:07:20,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969832092] [2021-12-22 00:07:20,543 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-22 00:07:20,543 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 00:07:20,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 00:07:20,544 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) [2021-12-22 00:07:20,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-12-22 00:07:20,642 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-12-22 00:07:20,642 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 00:07:20,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 35 conjunts are in the unsatisfiable core [2021-12-22 00:07:20,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:07:20,654 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2021-12-22 00:07:20,657 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2021-12-22 00:07:20,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 00:07:20,685 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 14 [2021-12-22 00:07:20,689 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-22 00:07:20,689 INFO L387 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 11 treesize of output 11 [2021-12-22 00:07:20,811 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-22 00:07:20,811 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 18 [2021-12-22 00:07:20,965 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2021-12-22 00:07:21,123 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-22 00:07:21,124 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 18 [2021-12-22 00:07:21,143 INFO L353 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-12-22 00:07:21,144 INFO L387 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 16 treesize of output 18 [2021-12-22 00:07:21,415 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-22 00:07:21,416 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 00:07:22,026 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-22 00:07:22,026 INFO L387 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 25 treesize of output 24 [2021-12-22 00:07:24,865 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 2 proven. 59 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-22 00:07:24,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [969832092] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 00:07:24,865 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 00:07:24,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 10] total 31 [2021-12-22 00:07:24,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407264144] [2021-12-22 00:07:24,866 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 00:07:24,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-12-22 00:07:24,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:07:24,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-12-22 00:07:24,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=788, Unknown=0, NotChecked=0, Total=992 [2021-12-22 00:07:24,867 INFO L87 Difference]: Start difference. First operand 104 states and 111 transitions. Second operand has 32 states, 31 states have (on average 5.064516129032258) internal successors, (157), 32 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:07:25,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:07:25,529 INFO L93 Difference]: Finished difference Result 167 states and 186 transitions. [2021-12-22 00:07:25,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-22 00:07:25,530 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 5.064516129032258) internal successors, (157), 32 states have internal predecessors, (157), 0 states have call successors, (0), 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 60 [2021-12-22 00:07:25,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:07:25,530 INFO L225 Difference]: With dead ends: 167 [2021-12-22 00:07:25,530 INFO L226 Difference]: Without dead ends: 167 [2021-12-22 00:07:25,531 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 105 SyntacticMatches, 7 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 418 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=476, Invalid=1594, Unknown=0, NotChecked=0, Total=2070 [2021-12-22 00:07:25,531 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 229 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 276 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 00:07:25,531 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [229 Valid, 295 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 241 Invalid, 0 Unknown, 276 Unchecked, 0.1s Time] [2021-12-22 00:07:25,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-12-22 00:07:25,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 163. [2021-12-22 00:07:25,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 159 states have (on average 1.1383647798742138) internal successors, (181), 162 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:07:25,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 181 transitions. [2021-12-22 00:07:25,534 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 181 transitions. Word has length 60 [2021-12-22 00:07:25,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:07:25,534 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 181 transitions. [2021-12-22 00:07:25,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 5.064516129032258) internal successors, (157), 32 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:07:25,534 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 181 transitions. [2021-12-22 00:07:25,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-12-22 00:07:25,534 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:07:25,535 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1] [2021-12-22 00:07:25,552 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-12-22 00:07:25,752 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,SelfDestructingSolverStorable23 [2021-12-22 00:07:25,752 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-12-22 00:07:25,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:07:25,752 INFO L85 PathProgramCache]: Analyzing trace with hash -809246151, now seen corresponding path program 1 times [2021-12-22 00:07:25,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:07:25,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662564379] [2021-12-22 00:07:25,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:07:25,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:07:25,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:07:25,889 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 33 proven. 92 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-22 00:07:25,889 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:07:25,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662564379] [2021-12-22 00:07:25,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662564379] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 00:07:25,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642487775] [2021-12-22 00:07:25,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:07:25,890 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 00:07:25,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 00:07:25,891 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) [2021-12-22 00:07:25,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-12-22 00:07:25,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:07:25,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 25 conjunts are in the unsatisfiable core [2021-12-22 00:07:25,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:07:26,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 00:07:26,238 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 19 treesize of output 21 [2021-12-22 00:07:26,244 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-22 00:07:26,244 INFO L387 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 11 treesize of output 11 [2021-12-22 00:07:26,344 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 59 proven. 61 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-22 00:07:26,344 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 00:07:26,525 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-22 00:07:26,526 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 25 treesize of output 21 [2021-12-22 00:07:26,755 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 59 proven. 61 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-22 00:07:26,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642487775] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 00:07:26,756 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 00:07:26,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 23 [2021-12-22 00:07:26,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039519672] [2021-12-22 00:07:26,756 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 00:07:26,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-12-22 00:07:26,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:07:26,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-12-22 00:07:26,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=458, Unknown=0, NotChecked=0, Total=552 [2021-12-22 00:07:26,757 INFO L87 Difference]: Start difference. First operand 163 states and 181 transitions. Second operand has 24 states, 23 states have (on average 8.695652173913043) internal successors, (200), 24 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:07:27,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:07:27,226 INFO L93 Difference]: Finished difference Result 244 states and 276 transitions. [2021-12-22 00:07:27,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-22 00:07:27,231 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 8.695652173913043) internal successors, (200), 24 states have internal predecessors, (200), 0 states have call successors, (0), 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 75 [2021-12-22 00:07:27,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:07:27,231 INFO L225 Difference]: With dead ends: 244 [2021-12-22 00:07:27,231 INFO L226 Difference]: Without dead ends: 244 [2021-12-22 00:07:27,232 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=297, Invalid=1109, Unknown=0, NotChecked=0, Total=1406 [2021-12-22 00:07:27,232 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 259 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 24 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 00:07:27,232 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [259 Valid, 421 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 432 Invalid, 0 Unknown, 24 Unchecked, 0.2s Time] [2021-12-22 00:07:27,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2021-12-22 00:07:27,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 175. [2021-12-22 00:07:27,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 171 states have (on average 1.1461988304093567) internal successors, (196), 174 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:07:27,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 196 transitions. [2021-12-22 00:07:27,235 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 196 transitions. Word has length 75 [2021-12-22 00:07:27,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:07:27,235 INFO L470 AbstractCegarLoop]: Abstraction has 175 states and 196 transitions. [2021-12-22 00:07:27,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 8.695652173913043) internal successors, (200), 24 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:07:27,235 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 196 transitions. [2021-12-22 00:07:27,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-12-22 00:07:27,236 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:07:27,236 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1] [2021-12-22 00:07:27,255 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-12-22 00:07:27,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 00:07:27,453 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-12-22 00:07:27,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:07:27,453 INFO L85 PathProgramCache]: Analyzing trace with hash 683173057, now seen corresponding path program 1 times [2021-12-22 00:07:27,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:07:27,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740084869] [2021-12-22 00:07:27,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:07:27,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:07:27,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:07:27,543 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 37 proven. 88 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-22 00:07:27,544 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:07:27,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740084869] [2021-12-22 00:07:27,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740084869] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 00:07:27,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422384271] [2021-12-22 00:07:27,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:07:27,544 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 00:07:27,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 00:07:27,545 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) [2021-12-22 00:07:27,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-12-22 00:07:27,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:07:27,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-22 00:07:27,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:07:27,753 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2021-12-22 00:07:27,840 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 66 proven. 59 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-22 00:07:27,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 00:07:28,003 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 66 proven. 59 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-22 00:07:28,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1422384271] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 00:07:28,003 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 00:07:28,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2021-12-22 00:07:28,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493901430] [2021-12-22 00:07:28,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 00:07:28,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-22 00:07:28,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:07:28,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-22 00:07:28,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-12-22 00:07:28,004 INFO L87 Difference]: Start difference. First operand 175 states and 196 transitions. Second operand has 15 states, 14 states have (on average 7.285714285714286) internal successors, (102), 15 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:07:28,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:07:28,216 INFO L93 Difference]: Finished difference Result 223 states and 250 transitions. [2021-12-22 00:07:28,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-22 00:07:28,216 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 7.285714285714286) internal successors, (102), 15 states have internal predecessors, (102), 0 states have call successors, (0), 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 76 [2021-12-22 00:07:28,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:07:28,217 INFO L225 Difference]: With dead ends: 223 [2021-12-22 00:07:28,217 INFO L226 Difference]: Without dead ends: 223 [2021-12-22 00:07:28,219 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 144 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=115, Invalid=347, Unknown=0, NotChecked=0, Total=462 [2021-12-22 00:07:28,219 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 91 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 00:07:28,220 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 312 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 00:07:28,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2021-12-22 00:07:28,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 178. [2021-12-22 00:07:28,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 174 states have (on average 1.1436781609195403) internal successors, (199), 177 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:07:28,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 199 transitions. [2021-12-22 00:07:28,223 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 199 transitions. Word has length 76 [2021-12-22 00:07:28,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:07:28,223 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 199 transitions. [2021-12-22 00:07:28,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 7.285714285714286) internal successors, (102), 15 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:07:28,223 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 199 transitions. [2021-12-22 00:07:28,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-12-22 00:07:28,224 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:07:28,224 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1] [2021-12-22 00:07:28,241 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-12-22 00:07:28,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 00:07:28,433 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-12-22 00:07:28,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:07:28,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1737117148, now seen corresponding path program 2 times [2021-12-22 00:07:28,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:07:28,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403492962] [2021-12-22 00:07:28,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:07:28,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:07:28,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:07:28,506 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 13 proven. 137 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-22 00:07:28,507 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:07:28,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403492962] [2021-12-22 00:07:28,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403492962] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 00:07:28,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341825207] [2021-12-22 00:07:28,507 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-22 00:07:28,507 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 00:07:28,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 00:07:28,508 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) [2021-12-22 00:07:28,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-12-22 00:07:28,622 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-22 00:07:28,622 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 00:07:28,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-22 00:07:28,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:07:28,808 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 24 proven. 126 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-22 00:07:28,809 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 00:07:28,932 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 24 proven. 126 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-22 00:07:28,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341825207] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 00:07:28,932 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 00:07:28,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 16 [2021-12-22 00:07:28,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855733117] [2021-12-22 00:07:28,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 00:07:28,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-22 00:07:28,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:07:28,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-22 00:07:28,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2021-12-22 00:07:28,933 INFO L87 Difference]: Start difference. First operand 178 states and 199 transitions. Second operand has 16 states, 16 states have (on average 6.625) internal successors, (106), 16 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) [2021-12-22 00:07:29,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:07:29,197 INFO L93 Difference]: Finished difference Result 220 states and 242 transitions. [2021-12-22 00:07:29,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-22 00:07:29,198 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.625) internal successors, (106), 16 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 80 [2021-12-22 00:07:29,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:07:29,198 INFO L225 Difference]: With dead ends: 220 [2021-12-22 00:07:29,198 INFO L226 Difference]: Without dead ends: 220 [2021-12-22 00:07:29,199 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 153 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=290, Invalid=766, Unknown=0, NotChecked=0, Total=1056 [2021-12-22 00:07:29,199 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 378 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 00:07:29,199 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [378 Valid, 248 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 00:07:29,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-12-22 00:07:29,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 176. [2021-12-22 00:07:29,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 172 states have (on average 1.127906976744186) internal successors, (194), 175 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:07:29,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 194 transitions. [2021-12-22 00:07:29,202 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 194 transitions. Word has length 80 [2021-12-22 00:07:29,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:07:29,202 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 194 transitions. [2021-12-22 00:07:29,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.625) internal successors, (106), 16 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) [2021-12-22 00:07:29,202 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 194 transitions. [2021-12-22 00:07:29,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-12-22 00:07:29,203 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:07:29,203 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1] [2021-12-22 00:07:29,222 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-12-22 00:07:29,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 00:07:29,407 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-12-22 00:07:29,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:07:29,407 INFO L85 PathProgramCache]: Analyzing trace with hash 2063647327, now seen corresponding path program 4 times [2021-12-22 00:07:29,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:07:29,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311958466] [2021-12-22 00:07:29,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:07:29,408 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:07:29,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:07:29,480 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 91 proven. 78 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-12-22 00:07:29,480 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:07:29,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311958466] [2021-12-22 00:07:29,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311958466] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 00:07:29,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029251863] [2021-12-22 00:07:29,481 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-22 00:07:29,481 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 00:07:29,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 00:07:29,496 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) [2021-12-22 00:07:29,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-12-22 00:07:29,620 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-22 00:07:29,620 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 00:07:29,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-22 00:07:29,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:07:29,793 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 81 proven. 87 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-22 00:07:29,793 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 00:07:29,953 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 81 proven. 87 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-22 00:07:29,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2029251863] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 00:07:29,954 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 00:07:29,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 17 [2021-12-22 00:07:29,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774489523] [2021-12-22 00:07:29,954 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 00:07:29,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-22 00:07:29,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:07:29,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-22 00:07:29,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2021-12-22 00:07:29,955 INFO L87 Difference]: Start difference. First operand 176 states and 194 transitions. Second operand has 17 states, 17 states have (on average 6.764705882352941) internal successors, (115), 17 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:07:30,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:07:30,260 INFO L93 Difference]: Finished difference Result 197 states and 212 transitions. [2021-12-22 00:07:30,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-22 00:07:30,260 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.764705882352941) internal successors, (115), 17 states have internal predecessors, (115), 0 states have call successors, (0), 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 [2021-12-22 00:07:30,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:07:30,261 INFO L225 Difference]: With dead ends: 197 [2021-12-22 00:07:30,261 INFO L226 Difference]: Without dead ends: 197 [2021-12-22 00:07:30,261 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 169 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=199, Invalid=731, Unknown=0, NotChecked=0, Total=930 [2021-12-22 00:07:30,261 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 109 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 00:07:30,262 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 320 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 00:07:30,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-12-22 00:07:30,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 188. [2021-12-22 00:07:30,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 184 states have (on average 1.1032608695652173) internal successors, (203), 187 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:07:30,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 203 transitions. [2021-12-22 00:07:30,264 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 203 transitions. Word has length 89 [2021-12-22 00:07:30,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:07:30,264 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 203 transitions. [2021-12-22 00:07:30,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.764705882352941) internal successors, (115), 17 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:07:30,264 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 203 transitions. [2021-12-22 00:07:30,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-22 00:07:30,264 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:07:30,264 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1] [2021-12-22 00:07:30,285 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-12-22 00:07:30,471 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,SelfDestructingSolverStorable27 [2021-12-22 00:07:30,471 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-12-22 00:07:30,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:07:30,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1513850931, now seen corresponding path program 5 times [2021-12-22 00:07:30,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:07:30,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815063676] [2021-12-22 00:07:30,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:07:30,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:07:30,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:07:30,809 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-12-22 00:07:30,809 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:07:30,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815063676] [2021-12-22 00:07:30,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815063676] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 00:07:30,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647702712] [2021-12-22 00:07:30,809 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-22 00:07:30,809 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 00:07:30,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 00:07:30,810 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) [2021-12-22 00:07:30,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-12-22 00:07:30,988 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-12-22 00:07:30,988 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 00:07:30,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 136 conjunts are in the unsatisfiable core [2021-12-22 00:07:30,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:07:31,031 INFO L387 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 15 treesize of output 11 [2021-12-22 00:07:31,082 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-22 00:07:31,083 INFO L387 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 11 treesize of output 11 [2021-12-22 00:07:31,088 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2021-12-22 00:07:31,213 INFO L387 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 25 treesize of output 24 [2021-12-22 00:07:31,442 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 20 treesize of output 16 [2021-12-22 00:07:32,074 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-22 00:07:32,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 00:07:32,075 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 36 [2021-12-22 00:07:32,369 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-22 00:07:32,369 INFO L387 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 11 treesize of output 11 [2021-12-22 00:07:32,550 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-22 00:07:32,550 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 50 [2021-12-22 00:07:32,563 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 23 treesize of output 11 [2021-12-22 00:07:32,678 INFO L387 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 26 treesize of output 26 [2021-12-22 00:07:33,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 00:07:33,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 00:07:33,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 00:07:33,021 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-12-22 00:07:33,137 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-22 00:07:33,137 INFO L387 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 11 treesize of output 11 [2021-12-22 00:07:33,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 00:07:33,298 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-22 00:07:33,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 00:07:33,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 00:07:33,300 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 55 [2021-12-22 00:07:33,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 00:07:33,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 00:07:33,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 00:07:33,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 00:07:33,612 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-22 00:07:33,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 00:07:33,614 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 71 [2021-12-22 00:07:33,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 00:07:33,942 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-22 00:07:33,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 00:07:33,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 00:07:33,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 00:07:33,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 00:07:33,945 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 67 [2021-12-22 00:07:35,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 00:07:35,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 00:07:35,087 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 27 [2021-12-22 00:07:35,248 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 37 proven. 200 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-22 00:07:35,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 00:07:37,665 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-22 00:07:37,665 INFO L387 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 13 treesize of output 12 [2021-12-22 00:07:39,810 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_841 Int) (|v_ULTIMATE.start_foo_~#a~0#1.base_104| Int) (v_ArrVal_839 Int) (v_ArrVal_836 Int) (v_ArrVal_843 Int)) (let ((.cse2 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#b~0#1.base|) (+ |c_ULTIMATE.start_main_~#b~0#1.offset| (* |c_ULTIMATE.start_main_~i~2#1| 4)) v_ArrVal_836))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#b~0#1.base| .cse2))) (let ((.cse1 (store (select .cse0 |v_ULTIMATE.start_foo_~#a~0#1.base_104|) 0 v_ArrVal_839))) (let ((.cse3 (store .cse1 4 v_ArrVal_841))) (or (< v_ArrVal_841 (select (select (store .cse0 |v_ULTIMATE.start_foo_~#a~0#1.base_104| .cse1) |c_ULTIMATE.start_main_~#b~0#1.base|) (+ |c_ULTIMATE.start_main_~#b~0#1.offset| 4))) (= |c_ULTIMATE.start_main_~#b~0#1.base| |v_ULTIMATE.start_foo_~#a~0#1.base_104|) (< v_ArrVal_839 (select .cse2 |c_ULTIMATE.start_main_~#b~0#1.offset|)) (< v_ArrVal_843 (select (select (store .cse0 |v_ULTIMATE.start_foo_~#a~0#1.base_104| .cse3) |c_ULTIMATE.start_main_~#b~0#1.base|) (+ |c_ULTIMATE.start_main_~#b~0#1.offset| 8))) (< 0 (let ((.cse4 (store .cse3 8 v_ArrVal_843))) (+ v_ArrVal_843 (select .cse4 4) (select .cse4 0)))) (not (<= |c_ULTIMATE.start_main_#t~ret6#1| v_ArrVal_836)))))))) is different from false [2021-12-22 00:07:42,010 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_841 Int) (|v_ULTIMATE.start_foo_~#a~0#1.base_104| Int) (v_ArrVal_839 Int) (v_ArrVal_836 Int) (v_ArrVal_843 Int)) (let ((.cse2 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#b~0#1.base|) (+ |c_ULTIMATE.start_main_~#b~0#1.offset| (* |c_ULTIMATE.start_main_~i~2#1| 4)) v_ArrVal_836))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#b~0#1.base| .cse2))) (let ((.cse1 (store (select .cse0 |v_ULTIMATE.start_foo_~#a~0#1.base_104|) 0 v_ArrVal_839))) (let ((.cse3 (store .cse1 4 v_ArrVal_841))) (or (< v_ArrVal_836 |c_ULTIMATE.start_foo_#res#1|) (< v_ArrVal_841 (select (select (store .cse0 |v_ULTIMATE.start_foo_~#a~0#1.base_104| .cse1) |c_ULTIMATE.start_main_~#b~0#1.base|) (+ |c_ULTIMATE.start_main_~#b~0#1.offset| 4))) (= |c_ULTIMATE.start_main_~#b~0#1.base| |v_ULTIMATE.start_foo_~#a~0#1.base_104|) (< v_ArrVal_839 (select .cse2 |c_ULTIMATE.start_main_~#b~0#1.offset|)) (< v_ArrVal_843 (select (select (store .cse0 |v_ULTIMATE.start_foo_~#a~0#1.base_104| .cse3) |c_ULTIMATE.start_main_~#b~0#1.base|) (+ |c_ULTIMATE.start_main_~#b~0#1.offset| 8))) (< 0 (let ((.cse4 (store .cse3 8 v_ArrVal_843))) (+ v_ArrVal_843 (select .cse4 4) (select .cse4 0)))))))))) is different from false [2021-12-22 00:07:44,203 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_841 Int) (|v_ULTIMATE.start_foo_~#a~0#1.base_104| Int) (v_ArrVal_839 Int) (v_ArrVal_836 Int) (v_ArrVal_843 Int)) (let ((.cse2 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#b~0#1.base|) (+ |c_ULTIMATE.start_main_~#b~0#1.offset| (* |c_ULTIMATE.start_main_~i~2#1| 4)) v_ArrVal_836))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#b~0#1.base| .cse2))) (let ((.cse1 (store (select .cse0 |v_ULTIMATE.start_foo_~#a~0#1.base_104|) 0 v_ArrVal_839))) (let ((.cse3 (store .cse1 4 v_ArrVal_841))) (or (< v_ArrVal_841 (select (select (store .cse0 |v_ULTIMATE.start_foo_~#a~0#1.base_104| .cse1) |c_ULTIMATE.start_main_~#b~0#1.base|) (+ |c_ULTIMATE.start_main_~#b~0#1.offset| 4))) (= |c_ULTIMATE.start_main_~#b~0#1.base| |v_ULTIMATE.start_foo_~#a~0#1.base_104|) (< v_ArrVal_839 (select .cse2 |c_ULTIMATE.start_main_~#b~0#1.offset|)) (< v_ArrVal_843 (select (select (store .cse0 |v_ULTIMATE.start_foo_~#a~0#1.base_104| .cse3) |c_ULTIMATE.start_main_~#b~0#1.base|) (+ |c_ULTIMATE.start_main_~#b~0#1.offset| 8))) (< 0 (let ((.cse4 (store .cse3 8 v_ArrVal_843))) (+ v_ArrVal_843 (select .cse4 4) (select .cse4 0)))) (< v_ArrVal_836 |c_ULTIMATE.start_foo_~size#1|))))))) is different from false [2021-12-22 00:07:46,988 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_841 Int) (v_ArrVal_835 (Array Int Int)) (|v_ULTIMATE.start_foo_~#a~0#1.base_104| Int) (v_ArrVal_839 Int) (v_ArrVal_836 Int) (v_ArrVal_843 Int)) (let ((.cse5 (store |c_#memory_int| |c_ULTIMATE.start_foo_~#a~0#1.base| v_ArrVal_835))) (let ((.cse0 (store (select .cse5 |c_ULTIMATE.start_main_~#b~0#1.base|) (+ |c_ULTIMATE.start_main_~#b~0#1.offset| (* |c_ULTIMATE.start_main_~i~2#1| 4)) v_ArrVal_836))) (let ((.cse1 (store .cse5 |c_ULTIMATE.start_main_~#b~0#1.base| .cse0))) (let ((.cse3 (store (select .cse1 |v_ULTIMATE.start_foo_~#a~0#1.base_104|) 0 v_ArrVal_839))) (let ((.cse2 (store .cse3 4 v_ArrVal_841))) (or (< v_ArrVal_839 (select .cse0 |c_ULTIMATE.start_main_~#b~0#1.offset|)) (= |c_ULTIMATE.start_main_~#b~0#1.base| |v_ULTIMATE.start_foo_~#a~0#1.base_104|) (< v_ArrVal_843 (select (select (store .cse1 |v_ULTIMATE.start_foo_~#a~0#1.base_104| .cse2) |c_ULTIMATE.start_main_~#b~0#1.base|) (+ |c_ULTIMATE.start_main_~#b~0#1.offset| 8))) (< v_ArrVal_841 (select (select (store .cse1 |v_ULTIMATE.start_foo_~#a~0#1.base_104| .cse3) |c_ULTIMATE.start_main_~#b~0#1.base|) (+ |c_ULTIMATE.start_main_~#b~0#1.offset| 4))) (< 0 (let ((.cse4 (store .cse2 8 v_ArrVal_843))) (+ v_ArrVal_843 (select .cse4 0) (select .cse4 4)))) (< v_ArrVal_836 |c_ULTIMATE.start_foo_~size#1|)))))))) is different from false [2021-12-22 00:07:48,567 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_841 Int) (|v_ULTIMATE.start_foo_~#a~0#1.base_106| Int) (v_ArrVal_835 (Array Int Int)) (|v_ULTIMATE.start_foo_~#a~0#1.base_104| Int) (v_ArrVal_839 Int) (v_ArrVal_836 Int) (v_ArrVal_843 Int)) (let ((.cse5 (store |c_#memory_int| |v_ULTIMATE.start_foo_~#a~0#1.base_106| v_ArrVal_835))) (let ((.cse3 (store (select .cse5 |c_ULTIMATE.start_main_~#b~0#1.base|) (+ |c_ULTIMATE.start_main_~#b~0#1.offset| (* |c_ULTIMATE.start_main_~i~2#1| 4)) v_ArrVal_836))) (let ((.cse0 (store .cse5 |c_ULTIMATE.start_main_~#b~0#1.base| .cse3))) (let ((.cse1 (store (select .cse0 |v_ULTIMATE.start_foo_~#a~0#1.base_104|) 0 v_ArrVal_839))) (let ((.cse2 (store .cse1 4 v_ArrVal_841))) (or (< v_ArrVal_836 |c_ULTIMATE.start_main_~i~2#1|) (< v_ArrVal_841 (select (select (store .cse0 |v_ULTIMATE.start_foo_~#a~0#1.base_104| .cse1) |c_ULTIMATE.start_main_~#b~0#1.base|) (+ |c_ULTIMATE.start_main_~#b~0#1.offset| 4))) (not (= (select |c_#valid| |v_ULTIMATE.start_foo_~#a~0#1.base_106|) 0)) (= |c_ULTIMATE.start_main_~#b~0#1.base| |v_ULTIMATE.start_foo_~#a~0#1.base_104|) (< v_ArrVal_843 (select (select (store .cse0 |v_ULTIMATE.start_foo_~#a~0#1.base_104| .cse2) |c_ULTIMATE.start_main_~#b~0#1.base|) (+ |c_ULTIMATE.start_main_~#b~0#1.offset| 8))) (< v_ArrVal_839 (select .cse3 |c_ULTIMATE.start_main_~#b~0#1.offset|)) (< 0 (let ((.cse4 (store .cse2 8 v_ArrVal_843))) (+ (select .cse4 4) v_ArrVal_843 (select .cse4 0))))))))))) is different from false [2021-12-22 00:07:48,887 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_841 Int) (|v_ULTIMATE.start_foo_~#a~0#1.base_106| Int) (v_ArrVal_835 (Array Int Int)) (|v_ULTIMATE.start_foo_~#a~0#1.base_104| Int) (v_ArrVal_839 Int) (v_ArrVal_836 Int) (v_ArrVal_843 Int)) (let ((.cse5 (store |c_#memory_int| |v_ULTIMATE.start_foo_~#a~0#1.base_106| v_ArrVal_835))) (let ((.cse0 (store (select .cse5 |c_ULTIMATE.start_main_~#b~0#1.base|) (+ |c_ULTIMATE.start_main_~#b~0#1.offset| (* |c_ULTIMATE.start_main_~i~2#1| 4) 4) v_ArrVal_836))) (let ((.cse1 (store .cse5 |c_ULTIMATE.start_main_~#b~0#1.base| .cse0))) (let ((.cse4 (store (select .cse1 |v_ULTIMATE.start_foo_~#a~0#1.base_104|) 0 v_ArrVal_839))) (let ((.cse2 (store .cse4 4 v_ArrVal_841))) (or (< v_ArrVal_839 (select .cse0 |c_ULTIMATE.start_main_~#b~0#1.offset|)) (not (= (select |c_#valid| |v_ULTIMATE.start_foo_~#a~0#1.base_106|) 0)) (= |c_ULTIMATE.start_main_~#b~0#1.base| |v_ULTIMATE.start_foo_~#a~0#1.base_104|) (< v_ArrVal_836 (+ |c_ULTIMATE.start_main_~i~2#1| 1)) (< v_ArrVal_843 (select (select (store .cse1 |v_ULTIMATE.start_foo_~#a~0#1.base_104| .cse2) |c_ULTIMATE.start_main_~#b~0#1.base|) (+ |c_ULTIMATE.start_main_~#b~0#1.offset| 8))) (< 0 (let ((.cse3 (store .cse2 8 v_ArrVal_843))) (+ v_ArrVal_843 (select .cse3 4) (select .cse3 0)))) (< v_ArrVal_841 (select (select (store .cse1 |v_ULTIMATE.start_foo_~#a~0#1.base_104| .cse4) |c_ULTIMATE.start_main_~#b~0#1.base|) (+ |c_ULTIMATE.start_main_~#b~0#1.offset| 4)))))))))) is different from false [2021-12-22 00:07:49,169 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-22 00:07:49,169 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2021-12-22 00:07:50,537 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_841 Int) (|v_ULTIMATE.start_foo_~#a~0#1.base_106| Int) (v_ArrVal_835 (Array Int Int)) (|v_ULTIMATE.start_foo_~#a~0#1.base_104| Int) (v_ArrVal_839 Int) (v_ArrVal_836 Int) (v_ArrVal_832 Int) (v_ArrVal_843 Int)) (let ((.cse6 (* |c_ULTIMATE.start_main_~i~2#1| 4))) (let ((.cse5 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#b~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#b~0#1.base|) (+ |c_ULTIMATE.start_main_~#b~0#1.offset| .cse6) v_ArrVal_832)) |v_ULTIMATE.start_foo_~#a~0#1.base_106| v_ArrVal_835))) (let ((.cse4 (store (select .cse5 |c_ULTIMATE.start_main_~#b~0#1.base|) (+ |c_ULTIMATE.start_main_~#b~0#1.offset| .cse6 4) v_ArrVal_836))) (let ((.cse2 (store .cse5 |c_ULTIMATE.start_main_~#b~0#1.base| .cse4))) (let ((.cse3 (store (select .cse2 |v_ULTIMATE.start_foo_~#a~0#1.base_104|) 0 v_ArrVal_839))) (let ((.cse1 (store .cse3 4 v_ArrVal_841))) (or (< 0 (let ((.cse0 (store .cse1 8 v_ArrVal_843))) (+ v_ArrVal_843 (select .cse0 0) (select .cse0 4)))) (< v_ArrVal_841 (select (select (store .cse2 |v_ULTIMATE.start_foo_~#a~0#1.base_104| .cse3) |c_ULTIMATE.start_main_~#b~0#1.base|) (+ |c_ULTIMATE.start_main_~#b~0#1.offset| 4))) (< v_ArrVal_839 (select .cse4 |c_ULTIMATE.start_main_~#b~0#1.offset|)) (= |c_ULTIMATE.start_main_~#b~0#1.base| |v_ULTIMATE.start_foo_~#a~0#1.base_104|) (< v_ArrVal_843 (select (select (store .cse2 |v_ULTIMATE.start_foo_~#a~0#1.base_104| .cse1) |c_ULTIMATE.start_main_~#b~0#1.base|) (+ |c_ULTIMATE.start_main_~#b~0#1.offset| 8))) (< v_ArrVal_832 |c_ULTIMATE.start_foo_#res#1|) (< v_ArrVal_836 (+ |c_ULTIMATE.start_main_~i~2#1| 1)) (= |c_ULTIMATE.start_main_~#b~0#1.base| |v_ULTIMATE.start_foo_~#a~0#1.base_106|))))))))) is different from false [2021-12-22 00:07:54,857 WARN L838 $PredicateComparison]: unable to prove that (or (forall ((v_ArrVal_841 Int) (|v_ULTIMATE.start_foo_~#a~0#1.base_106| Int) (|v_ULTIMATE.start_foo_~#a~0#1.base_104| Int) (v_ArrVal_835 (Array Int Int)) (v_ArrVal_839 Int) (v_ArrVal_836 Int) (v_ArrVal_832 Int) (v_ArrVal_843 Int)) (let ((.cse6 (* |c_ULTIMATE.start_main_~i~2#1| 4))) (let ((.cse5 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#b~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#b~0#1.base|) (+ |c_ULTIMATE.start_main_~#b~0#1.offset| .cse6) v_ArrVal_832)) |v_ULTIMATE.start_foo_~#a~0#1.base_106| v_ArrVal_835))) (let ((.cse4 (store (select .cse5 |c_ULTIMATE.start_main_~#b~0#1.base|) (+ |c_ULTIMATE.start_main_~#b~0#1.offset| .cse6 4) v_ArrVal_836))) (let ((.cse2 (store .cse5 |c_ULTIMATE.start_main_~#b~0#1.base| .cse4))) (let ((.cse3 (store (select .cse2 |v_ULTIMATE.start_foo_~#a~0#1.base_104|) 0 v_ArrVal_839))) (let ((.cse1 (store .cse3 4 v_ArrVal_841))) (or (< 0 (let ((.cse0 (store .cse1 8 v_ArrVal_843))) (+ v_ArrVal_843 (select .cse0 0) (select .cse0 4)))) (< v_ArrVal_841 (select (select (store .cse2 |v_ULTIMATE.start_foo_~#a~0#1.base_104| .cse3) |c_ULTIMATE.start_main_~#b~0#1.base|) (+ |c_ULTIMATE.start_main_~#b~0#1.offset| 4))) (< v_ArrVal_832 |c_ULTIMATE.start_foo_~i~1#1|) (< v_ArrVal_839 (select .cse4 |c_ULTIMATE.start_main_~#b~0#1.offset|)) (= |c_ULTIMATE.start_main_~#b~0#1.base| |v_ULTIMATE.start_foo_~#a~0#1.base_104|) (< v_ArrVal_843 (select (select (store .cse2 |v_ULTIMATE.start_foo_~#a~0#1.base_104| .cse1) |c_ULTIMATE.start_main_~#b~0#1.base|) (+ |c_ULTIMATE.start_main_~#b~0#1.offset| 8))) (< v_ArrVal_836 (+ |c_ULTIMATE.start_main_~i~2#1| 1)) (= |c_ULTIMATE.start_main_~#b~0#1.base| |v_ULTIMATE.start_foo_~#a~0#1.base_106|))))))))) (forall ((|ULTIMATE.start_bar_~i~0#1| Int) (|ULTIMATE.start_bar_~b#1.offset| Int)) (let ((.cse8 (* |ULTIMATE.start_bar_~i~0#1| 4))) (let ((.cse7 (+ .cse8 |ULTIMATE.start_bar_~b#1.offset|))) (or (< (+ |c_ULTIMATE.start_bar_~res~0#1| (select (select |c_#memory_int| |c_ULTIMATE.start_bar_~b#1.base|) .cse7)) 0) (not (<= 0 .cse7)) (not (<= (+ .cse8 4 |ULTIMATE.start_bar_~b#1.offset|) (select |c_#length| |c_ULTIMATE.start_bar_~b#1.base|)))))))) is different from false [2021-12-22 00:07:55,864 WARN L838 $PredicateComparison]: unable to prove that (or (forall ((v_ArrVal_841 Int) (|v_ULTIMATE.start_foo_~#a~0#1.base_106| Int) (|v_ULTIMATE.start_foo_~#a~0#1.base_104| Int) (v_ArrVal_835 (Array Int Int)) (v_ArrVal_839 Int) (v_ArrVal_836 Int) (v_ArrVal_832 Int) (v_ArrVal_843 Int)) (let ((.cse6 (* |c_ULTIMATE.start_main_~i~2#1| 4))) (let ((.cse5 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#b~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#b~0#1.base|) (+ |c_ULTIMATE.start_main_~#b~0#1.offset| .cse6) v_ArrVal_832)) |v_ULTIMATE.start_foo_~#a~0#1.base_106| v_ArrVal_835))) (let ((.cse4 (store (select .cse5 |c_ULTIMATE.start_main_~#b~0#1.base|) (+ |c_ULTIMATE.start_main_~#b~0#1.offset| .cse6 4) v_ArrVal_836))) (let ((.cse2 (store .cse5 |c_ULTIMATE.start_main_~#b~0#1.base| .cse4))) (let ((.cse3 (store (select .cse2 |v_ULTIMATE.start_foo_~#a~0#1.base_104|) 0 v_ArrVal_839))) (let ((.cse1 (store .cse3 4 v_ArrVal_841))) (or (< 0 (let ((.cse0 (store .cse1 8 v_ArrVal_843))) (+ v_ArrVal_843 (select .cse0 0) (select .cse0 4)))) (< v_ArrVal_841 (select (select (store .cse2 |v_ULTIMATE.start_foo_~#a~0#1.base_104| .cse3) |c_ULTIMATE.start_main_~#b~0#1.base|) (+ |c_ULTIMATE.start_main_~#b~0#1.offset| 4))) (< v_ArrVal_832 |c_ULTIMATE.start_foo_~i~1#1|) (< v_ArrVal_839 (select .cse4 |c_ULTIMATE.start_main_~#b~0#1.offset|)) (= |c_ULTIMATE.start_main_~#b~0#1.base| |v_ULTIMATE.start_foo_~#a~0#1.base_104|) (< v_ArrVal_843 (select (select (store .cse2 |v_ULTIMATE.start_foo_~#a~0#1.base_104| .cse1) |c_ULTIMATE.start_main_~#b~0#1.base|) (+ |c_ULTIMATE.start_main_~#b~0#1.offset| 8))) (< v_ArrVal_836 (+ |c_ULTIMATE.start_main_~i~2#1| 1)) (= |c_ULTIMATE.start_main_~#b~0#1.base| |v_ULTIMATE.start_foo_~#a~0#1.base_106|))))))))) (forall ((|ULTIMATE.start_bar_~i~0#1| Int) (|ULTIMATE.start_bar_~b#1.offset| Int)) (let ((.cse8 (* |ULTIMATE.start_bar_~i~0#1| 4))) (let ((.cse7 (+ .cse8 |ULTIMATE.start_bar_~b#1.offset|))) (or (< (select (select |c_#memory_int| |c_ULTIMATE.start_foo_~#a~0#1.base|) .cse7) 0) (not (<= (+ .cse8 4 |ULTIMATE.start_bar_~b#1.offset|) (select |c_#length| |c_ULTIMATE.start_foo_~#a~0#1.base|))) (not (<= 0 .cse7))))))) is different from false