./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety/test-0513.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c3fed411 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/memsafety/test-0513.i -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 aaec9a71c2206d3d9fbfa56b3c6172e3ff60aad385f0ad346fdbde53f8ce1a2e --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-18 20:33:25,009 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-18 20:33:25,012 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-18 20:33:25,057 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-18 20:33:25,057 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-18 20:33:25,061 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-18 20:33:25,062 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-18 20:33:25,065 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-18 20:33:25,067 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-18 20:33:25,073 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-18 20:33:25,074 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-18 20:33:25,075 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-18 20:33:25,076 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-18 20:33:25,079 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-18 20:33:25,080 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-18 20:33:25,085 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-18 20:33:25,088 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-18 20:33:25,089 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-18 20:33:25,090 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-18 20:33:25,094 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-18 20:33:25,097 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-18 20:33:25,098 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-18 20:33:25,100 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-18 20:33:25,101 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-18 20:33:25,105 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-18 20:33:25,106 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-18 20:33:25,106 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-18 20:33:25,108 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-18 20:33:25,108 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-18 20:33:25,109 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-18 20:33:25,109 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-18 20:33:25,110 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-18 20:33:25,112 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-18 20:33:25,113 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-18 20:33:25,114 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-18 20:33:25,114 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-18 20:33:25,115 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-18 20:33:25,115 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-18 20:33:25,115 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-18 20:33:25,116 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-18 20:33:25,116 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-18 20:33:25,117 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-18 20:33:25,154 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-18 20:33:25,157 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-18 20:33:25,158 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-18 20:33:25,158 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-18 20:33:25,159 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-18 20:33:25,159 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-18 20:33:25,160 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-18 20:33:25,160 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-18 20:33:25,160 INFO L138 SettingsManager]: * Use SBE=true [2021-12-18 20:33:25,161 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-18 20:33:25,161 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-18 20:33:25,162 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-18 20:33:25,162 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-18 20:33:25,162 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-18 20:33:25,162 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-18 20:33:25,162 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-18 20:33:25,163 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-18 20:33:25,163 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-18 20:33:25,163 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-18 20:33:25,163 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-18 20:33:25,163 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-18 20:33:25,164 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-18 20:33:25,164 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-18 20:33:25,164 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-18 20:33:25,164 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-18 20:33:25,165 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 20:33:25,165 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-18 20:33:25,166 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-18 20:33:25,167 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-18 20:33:25,167 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-18 20:33:25,167 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-18 20:33:25,167 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aaec9a71c2206d3d9fbfa56b3c6172e3ff60aad385f0ad346fdbde53f8ce1a2e [2021-12-18 20:33:25,385 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-18 20:33:25,402 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-18 20:33:25,404 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-18 20:33:25,405 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-18 20:33:25,406 INFO L275 PluginConnector]: CDTParser initialized [2021-12-18 20:33:25,407 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/test-0513.i [2021-12-18 20:33:25,471 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69f784e09/6a2ff6607e48435ba86d6b74d847fcbc/FLAGa69063ae8 [2021-12-18 20:33:25,864 INFO L306 CDTParser]: Found 1 translation units. [2021-12-18 20:33:25,865 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0513.i [2021-12-18 20:33:25,879 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69f784e09/6a2ff6607e48435ba86d6b74d847fcbc/FLAGa69063ae8 [2021-12-18 20:33:26,200 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69f784e09/6a2ff6607e48435ba86d6b74d847fcbc [2021-12-18 20:33:26,203 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-18 20:33:26,205 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-18 20:33:26,206 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-18 20:33:26,206 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-18 20:33:26,209 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-18 20:33:26,210 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 08:33:26" (1/1) ... [2021-12-18 20:33:26,212 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fc67a00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:33:26, skipping insertion in model container [2021-12-18 20:33:26,212 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 08:33:26" (1/1) ... [2021-12-18 20:33:26,218 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-18 20:33:26,255 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-18 20:33:26,467 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 20:33:26,481 INFO L203 MainTranslator]: Completed pre-run [2021-12-18 20:33:26,530 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 20:33:26,553 INFO L208 MainTranslator]: Completed translation [2021-12-18 20:33:26,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:33:26 WrapperNode [2021-12-18 20:33:26,554 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-18 20:33:26,555 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-18 20:33:26,555 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-18 20:33:26,555 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-18 20:33:26,561 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:33:26" (1/1) ... [2021-12-18 20:33:26,572 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:33:26" (1/1) ... [2021-12-18 20:33:26,591 INFO L137 Inliner]: procedures = 123, calls = 37, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 124 [2021-12-18 20:33:26,591 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-18 20:33:26,592 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-18 20:33:26,592 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-18 20:33:26,592 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-18 20:33:26,599 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:33:26" (1/1) ... [2021-12-18 20:33:26,599 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:33:26" (1/1) ... [2021-12-18 20:33:26,604 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:33:26" (1/1) ... [2021-12-18 20:33:26,604 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:33:26" (1/1) ... [2021-12-18 20:33:26,611 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:33:26" (1/1) ... [2021-12-18 20:33:26,615 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:33:26" (1/1) ... [2021-12-18 20:33:26,616 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:33:26" (1/1) ... [2021-12-18 20:33:26,618 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-18 20:33:26,619 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-18 20:33:26,619 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-18 20:33:26,619 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-18 20:33:26,620 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:33:26" (1/1) ... [2021-12-18 20:33:26,626 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 20:33:26,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 20:33:26,644 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) [2021-12-18 20:33:26,651 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 [2021-12-18 20:33:26,675 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-18 20:33:26,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-18 20:33:26,675 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-18 20:33:26,675 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-18 20:33:26,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-18 20:33:26,675 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-18 20:33:26,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-18 20:33:26,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-18 20:33:26,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-18 20:33:26,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-18 20:33:26,755 INFO L236 CfgBuilder]: Building ICFG [2021-12-18 20:33:26,757 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-18 20:33:27,094 INFO L277 CfgBuilder]: Performing block encoding [2021-12-18 20:33:27,100 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-18 20:33:27,101 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-12-18 20:33:27,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 08:33:27 BoogieIcfgContainer [2021-12-18 20:33:27,103 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-18 20:33:27,104 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-18 20:33:27,104 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-18 20:33:27,107 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-18 20:33:27,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 08:33:26" (1/3) ... [2021-12-18 20:33:27,108 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e23c373 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 08:33:27, skipping insertion in model container [2021-12-18 20:33:27,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:33:26" (2/3) ... [2021-12-18 20:33:27,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e23c373 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 08:33:27, skipping insertion in model container [2021-12-18 20:33:27,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 08:33:27" (3/3) ... [2021-12-18 20:33:27,110 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0513.i [2021-12-18 20:33:27,114 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-18 20:33:27,115 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 62 error locations. [2021-12-18 20:33:27,159 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-18 20:33:27,167 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 [2021-12-18 20:33:27,168 INFO L340 AbstractCegarLoop]: Starting to check reachability of 62 error locations. [2021-12-18 20:33:27,179 INFO L276 IsEmpty]: Start isEmpty. Operand has 132 states, 69 states have (on average 2.101449275362319) internal successors, (145), 131 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 20:33:27,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-18 20:33:27,184 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 20:33:27,185 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-18 20:33:27,185 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 58 more)] === [2021-12-18 20:33:27,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 20:33:27,190 INFO L85 PathProgramCache]: Analyzing trace with hash 28740643, now seen corresponding path program 1 times [2021-12-18 20:33:27,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 20:33:27,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492229923] [2021-12-18 20:33:27,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 20:33:27,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 20:33:27,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 20:33:27,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 20:33:27,311 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 20:33:27,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492229923] [2021-12-18 20:33:27,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492229923] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 20:33:27,313 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 20:33:27,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-18 20:33:27,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322926342] [2021-12-18 20:33:27,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 20:33:27,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-18 20:33:27,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 20:33:27,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-18 20:33:27,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-18 20:33:27,355 INFO L87 Difference]: Start difference. First operand has 132 states, 69 states have (on average 2.101449275362319) internal successors, (145), 131 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 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) [2021-12-18 20:33:27,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 20:33:27,385 INFO L93 Difference]: Finished difference Result 132 states and 140 transitions. [2021-12-18 20:33:27,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-18 20:33:27,388 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 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 [2021-12-18 20:33:27,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 20:33:27,398 INFO L225 Difference]: With dead ends: 132 [2021-12-18 20:33:27,398 INFO L226 Difference]: Without dead ends: 130 [2021-12-18 20:33:27,401 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-18 20:33:27,405 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 20:33:27,405 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 20:33:27,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-12-18 20:33:27,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2021-12-18 20:33:27,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 68 states have (on average 2.0294117647058822) internal successors, (138), 129 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 20:33:27,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 138 transitions. [2021-12-18 20:33:27,456 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 138 transitions. Word has length 5 [2021-12-18 20:33:27,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 20:33:27,456 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 138 transitions. [2021-12-18 20:33:27,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 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) [2021-12-18 20:33:27,457 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 138 transitions. [2021-12-18 20:33:27,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-18 20:33:27,457 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 20:33:27,457 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-18 20:33:27,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-18 20:33:27,459 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 58 more)] === [2021-12-18 20:33:27,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 20:33:27,460 INFO L85 PathProgramCache]: Analyzing trace with hash 889570808, now seen corresponding path program 1 times [2021-12-18 20:33:27,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 20:33:27,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376652920] [2021-12-18 20:33:27,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 20:33:27,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 20:33:27,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 20:33:27,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 20:33:27,527 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 20:33:27,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376652920] [2021-12-18 20:33:27,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376652920] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 20:33:27,528 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 20:33:27,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-18 20:33:27,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64542532] [2021-12-18 20:33:27,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 20:33:27,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 20:33:27,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 20:33:27,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 20:33:27,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 20:33:27,534 INFO L87 Difference]: Start difference. First operand 130 states and 138 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 20:33:27,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 20:33:27,678 INFO L93 Difference]: Finished difference Result 176 states and 186 transitions. [2021-12-18 20:33:27,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 20:33:27,679 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-12-18 20:33:27,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 20:33:27,680 INFO L225 Difference]: With dead ends: 176 [2021-12-18 20:33:27,682 INFO L226 Difference]: Without dead ends: 175 [2021-12-18 20:33:27,682 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 [2021-12-18 20:33:27,684 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 42 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 20:33:27,685 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 192 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 20:33:27,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-12-18 20:33:27,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 133. [2021-12-18 20:33:27,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 71 states have (on average 2.0) internal successors, (142), 132 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 20:33:27,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 142 transitions. [2021-12-18 20:33:27,695 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 142 transitions. Word has length 6 [2021-12-18 20:33:27,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 20:33:27,695 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 142 transitions. [2021-12-18 20:33:27,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 20:33:27,695 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 142 transitions. [2021-12-18 20:33:27,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-18 20:33:27,696 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 20:33:27,696 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-18 20:33:27,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-18 20:33:27,696 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 58 more)] === [2021-12-18 20:33:27,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 20:33:27,697 INFO L85 PathProgramCache]: Analyzing trace with hash 889570732, now seen corresponding path program 1 times [2021-12-18 20:33:27,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 20:33:27,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673882108] [2021-12-18 20:33:27,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 20:33:27,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 20:33:27,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 20:33:27,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 20:33:27,740 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 20:33:27,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673882108] [2021-12-18 20:33:27,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673882108] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 20:33:27,741 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 20:33:27,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 20:33:27,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120790511] [2021-12-18 20:33:27,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 20:33:27,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 20:33:27,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 20:33:27,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 20:33:27,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 20:33:27,744 INFO L87 Difference]: Start difference. First operand 133 states and 142 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 20:33:27,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 20:33:27,810 INFO L93 Difference]: Finished difference Result 145 states and 152 transitions. [2021-12-18 20:33:27,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 20:33:27,811 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-12-18 20:33:27,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 20:33:27,812 INFO L225 Difference]: With dead ends: 145 [2021-12-18 20:33:27,812 INFO L226 Difference]: Without dead ends: 144 [2021-12-18 20:33:27,812 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 20:33:27,813 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 15 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 20:33:27,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 229 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 20:33:27,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-12-18 20:33:27,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 138. [2021-12-18 20:33:27,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 76 states have (on average 1.9736842105263157) internal successors, (150), 137 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 20:33:27,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 150 transitions. [2021-12-18 20:33:27,820 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 150 transitions. Word has length 6 [2021-12-18 20:33:27,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 20:33:27,821 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 150 transitions. [2021-12-18 20:33:27,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 20:33:27,821 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 150 transitions. [2021-12-18 20:33:27,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-18 20:33:27,822 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 20:33:27,822 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-18 20:33:27,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-18 20:33:27,822 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 58 more)] === [2021-12-18 20:33:27,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 20:33:27,823 INFO L85 PathProgramCache]: Analyzing trace with hash 889571339, now seen corresponding path program 1 times [2021-12-18 20:33:27,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 20:33:27,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710276468] [2021-12-18 20:33:27,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 20:33:27,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 20:33:27,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 20:33:27,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 20:33:27,863 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 20:33:27,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710276468] [2021-12-18 20:33:27,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710276468] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 20:33:27,864 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 20:33:27,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-18 20:33:27,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167587619] [2021-12-18 20:33:27,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 20:33:27,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 20:33:27,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 20:33:27,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 20:33:27,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 20:33:27,866 INFO L87 Difference]: Start difference. First operand 138 states and 150 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 20:33:27,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 20:33:27,968 INFO L93 Difference]: Finished difference Result 169 states and 183 transitions. [2021-12-18 20:33:27,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 20:33:27,968 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-12-18 20:33:27,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 20:33:27,972 INFO L225 Difference]: With dead ends: 169 [2021-12-18 20:33:27,974 INFO L226 Difference]: Without dead ends: 169 [2021-12-18 20:33:27,974 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 [2021-12-18 20:33:27,984 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 75 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 20:33:27,985 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 167 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 20:33:27,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-12-18 20:33:27,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 139. [2021-12-18 20:33:27,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 80 states have (on average 1.9125) internal successors, (153), 138 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 20:33:27,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 153 transitions. [2021-12-18 20:33:28,000 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 153 transitions. Word has length 6 [2021-12-18 20:33:28,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 20:33:28,000 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 153 transitions. [2021-12-18 20:33:28,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 20:33:28,000 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 153 transitions. [2021-12-18 20:33:28,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-18 20:33:28,001 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 20:33:28,001 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-18 20:33:28,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-18 20:33:28,001 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 58 more)] === [2021-12-18 20:33:28,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 20:33:28,002 INFO L85 PathProgramCache]: Analyzing trace with hash 889571340, now seen corresponding path program 1 times [2021-12-18 20:33:28,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 20:33:28,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401666287] [2021-12-18 20:33:28,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 20:33:28,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 20:33:28,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 20:33:28,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 20:33:28,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 20:33:28,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401666287] [2021-12-18 20:33:28,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401666287] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 20:33:28,089 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 20:33:28,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-18 20:33:28,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066668906] [2021-12-18 20:33:28,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 20:33:28,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 20:33:28,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 20:33:28,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 20:33:28,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 20:33:28,092 INFO L87 Difference]: Start difference. First operand 139 states and 153 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 20:33:28,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 20:33:28,185 INFO L93 Difference]: Finished difference Result 137 states and 149 transitions. [2021-12-18 20:33:28,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 20:33:28,185 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-12-18 20:33:28,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 20:33:28,186 INFO L225 Difference]: With dead ends: 137 [2021-12-18 20:33:28,186 INFO L226 Difference]: Without dead ends: 137 [2021-12-18 20:33:28,187 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 [2021-12-18 20:33:28,192 INFO L933 BasicCegarLoop]: 119 mSDtfsCounter, 22 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 20:33:28,192 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 173 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 20:33:28,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-12-18 20:33:28,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2021-12-18 20:33:28,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 80 states have (on average 1.8625) internal successors, (149), 136 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 20:33:28,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 149 transitions. [2021-12-18 20:33:28,198 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 149 transitions. Word has length 6 [2021-12-18 20:33:28,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 20:33:28,198 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 149 transitions. [2021-12-18 20:33:28,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 20:33:28,198 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 149 transitions. [2021-12-18 20:33:28,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-18 20:33:28,199 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 20:33:28,199 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 20:33:28,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-18 20:33:28,199 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 58 more)] === [2021-12-18 20:33:28,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 20:33:28,200 INFO L85 PathProgramCache]: Analyzing trace with hash -2119659887, now seen corresponding path program 1 times [2021-12-18 20:33:28,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 20:33:28,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003343808] [2021-12-18 20:33:28,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 20:33:28,201 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 20:33:28,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 20:33:28,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 20:33:28,244 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 20:33:28,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003343808] [2021-12-18 20:33:28,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003343808] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 20:33:28,245 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 20:33:28,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-18 20:33:28,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933524297] [2021-12-18 20:33:28,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 20:33:28,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 20:33:28,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 20:33:28,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 20:33:28,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 20:33:28,247 INFO L87 Difference]: Start difference. First operand 137 states and 149 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 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) [2021-12-18 20:33:28,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 20:33:28,319 INFO L93 Difference]: Finished difference Result 133 states and 145 transitions. [2021-12-18 20:33:28,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 20:33:28,320 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 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 [2021-12-18 20:33:28,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 20:33:28,321 INFO L225 Difference]: With dead ends: 133 [2021-12-18 20:33:28,321 INFO L226 Difference]: Without dead ends: 133 [2021-12-18 20:33:28,321 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 [2021-12-18 20:33:28,322 INFO L933 BasicCegarLoop]: 113 mSDtfsCounter, 23 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 20:33:28,322 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 168 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 20:33:28,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-12-18 20:33:28,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2021-12-18 20:33:28,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 80 states have (on average 1.8125) internal successors, (145), 132 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 20:33:28,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 145 transitions. [2021-12-18 20:33:28,327 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 145 transitions. Word has length 11 [2021-12-18 20:33:28,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 20:33:28,327 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 145 transitions. [2021-12-18 20:33:28,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 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) [2021-12-18 20:33:28,327 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 145 transitions. [2021-12-18 20:33:28,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-18 20:33:28,328 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 20:33:28,328 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 20:33:28,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-18 20:33:28,328 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 58 more)] === [2021-12-18 20:33:28,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 20:33:28,329 INFO L85 PathProgramCache]: Analyzing trace with hash -2119659886, now seen corresponding path program 1 times [2021-12-18 20:33:28,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 20:33:28,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082371226] [2021-12-18 20:33:28,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 20:33:28,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 20:33:28,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 20:33:28,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 20:33:28,369 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 20:33:28,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082371226] [2021-12-18 20:33:28,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082371226] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 20:33:28,369 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 20:33:28,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-18 20:33:28,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862840444] [2021-12-18 20:33:28,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 20:33:28,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 20:33:28,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 20:33:28,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 20:33:28,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 20:33:28,371 INFO L87 Difference]: Start difference. First operand 133 states and 145 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 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) [2021-12-18 20:33:28,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 20:33:28,442 INFO L93 Difference]: Finished difference Result 130 states and 142 transitions. [2021-12-18 20:33:28,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 20:33:28,443 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 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 [2021-12-18 20:33:28,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 20:33:28,444 INFO L225 Difference]: With dead ends: 130 [2021-12-18 20:33:28,444 INFO L226 Difference]: Without dead ends: 130 [2021-12-18 20:33:28,444 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 [2021-12-18 20:33:28,446 INFO L933 BasicCegarLoop]: 118 mSDtfsCounter, 12 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 20:33:28,446 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 179 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 20:33:28,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-12-18 20:33:28,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2021-12-18 20:33:28,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 80 states have (on average 1.775) internal successors, (142), 129 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 20:33:28,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 142 transitions. [2021-12-18 20:33:28,455 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 142 transitions. Word has length 11 [2021-12-18 20:33:28,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 20:33:28,456 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 142 transitions. [2021-12-18 20:33:28,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 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) [2021-12-18 20:33:28,456 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 142 transitions. [2021-12-18 20:33:28,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-18 20:33:28,457 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 20:33:28,457 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 20:33:28,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-18 20:33:28,458 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 58 more)] === [2021-12-18 20:33:28,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 20:33:28,459 INFO L85 PathProgramCache]: Analyzing trace with hash -967503371, now seen corresponding path program 1 times [2021-12-18 20:33:28,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 20:33:28,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830185794] [2021-12-18 20:33:28,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 20:33:28,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 20:33:28,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 20:33:28,533 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 20:33:28,534 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 20:33:28,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830185794] [2021-12-18 20:33:28,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830185794] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 20:33:28,534 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 20:33:28,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 20:33:28,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733092288] [2021-12-18 20:33:28,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 20:33:28,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 20:33:28,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 20:33:28,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 20:33:28,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 20:33:28,536 INFO L87 Difference]: Start difference. First operand 130 states and 142 transitions. Second operand has 4 states, 4 states have (on average 4.5) 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) [2021-12-18 20:33:28,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 20:33:28,641 INFO L93 Difference]: Finished difference Result 228 states and 248 transitions. [2021-12-18 20:33:28,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 20:33:28,642 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) 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 [2021-12-18 20:33:28,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 20:33:28,643 INFO L225 Difference]: With dead ends: 228 [2021-12-18 20:33:28,643 INFO L226 Difference]: Without dead ends: 228 [2021-12-18 20:33:28,644 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 [2021-12-18 20:33:28,644 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 126 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 20:33:28,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 251 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 20:33:28,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2021-12-18 20:33:28,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 130. [2021-12-18 20:33:28,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 80 states have (on average 1.75) internal successors, (140), 129 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 20:33:28,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 140 transitions. [2021-12-18 20:33:28,649 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 140 transitions. Word has length 18 [2021-12-18 20:33:28,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 20:33:28,649 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 140 transitions. [2021-12-18 20:33:28,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) 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) [2021-12-18 20:33:28,650 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 140 transitions. [2021-12-18 20:33:28,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-18 20:33:28,650 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 20:33:28,651 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 20:33:28,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-18 20:33:28,651 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 58 more)] === [2021-12-18 20:33:28,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 20:33:28,652 INFO L85 PathProgramCache]: Analyzing trace with hash -967503447, now seen corresponding path program 1 times [2021-12-18 20:33:28,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 20:33:28,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360427721] [2021-12-18 20:33:28,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 20:33:28,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 20:33:28,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 20:33:28,721 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 20:33:28,722 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 20:33:28,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360427721] [2021-12-18 20:33:28,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360427721] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 20:33:28,722 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 20:33:28,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 20:33:28,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935239769] [2021-12-18 20:33:28,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 20:33:28,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 20:33:28,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 20:33:28,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 20:33:28,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-18 20:33:28,724 INFO L87 Difference]: Start difference. First operand 130 states and 140 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 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) [2021-12-18 20:33:28,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 20:33:28,881 INFO L93 Difference]: Finished difference Result 124 states and 134 transitions. [2021-12-18 20:33:28,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 20:33:28,882 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 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 [2021-12-18 20:33:28,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 20:33:28,883 INFO L225 Difference]: With dead ends: 124 [2021-12-18 20:33:28,883 INFO L226 Difference]: Without dead ends: 124 [2021-12-18 20:33:28,884 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-18 20:33:28,886 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 46 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 20:33:28,887 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 213 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 20:33:28,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-12-18 20:33:28,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 123. [2021-12-18 20:33:28,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 81 states have (on average 1.654320987654321) internal successors, (134), 122 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 20:33:28,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 134 transitions. [2021-12-18 20:33:28,893 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 134 transitions. Word has length 18 [2021-12-18 20:33:28,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 20:33:28,893 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 134 transitions. [2021-12-18 20:33:28,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 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) [2021-12-18 20:33:28,894 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 134 transitions. [2021-12-18 20:33:28,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-18 20:33:28,895 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 20:33:28,895 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 20:33:28,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-18 20:33:28,895 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 58 more)] === [2021-12-18 20:33:28,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 20:33:28,896 INFO L85 PathProgramCache]: Analyzing trace with hash -967503446, now seen corresponding path program 1 times [2021-12-18 20:33:28,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 20:33:28,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870456106] [2021-12-18 20:33:28,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 20:33:28,897 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 20:33:28,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 20:33:28,995 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 20:33:28,996 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 20:33:28,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870456106] [2021-12-18 20:33:28,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870456106] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 20:33:28,997 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 20:33:28,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 20:33:28,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712118268] [2021-12-18 20:33:28,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 20:33:28,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 20:33:28,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 20:33:28,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 20:33:28,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 20:33:28,999 INFO L87 Difference]: Start difference. First operand 123 states and 134 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) [2021-12-18 20:33:29,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 20:33:29,153 INFO L93 Difference]: Finished difference Result 204 states and 223 transitions. [2021-12-18 20:33:29,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 20:33:29,153 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 [2021-12-18 20:33:29,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 20:33:29,155 INFO L225 Difference]: With dead ends: 204 [2021-12-18 20:33:29,155 INFO L226 Difference]: Without dead ends: 204 [2021-12-18 20:33:29,156 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-18 20:33:29,156 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 100 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 20:33:29,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 168 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 20:33:29,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2021-12-18 20:33:29,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 162. [2021-12-18 20:33:29,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 122 states have (on average 1.680327868852459) internal successors, (205), 161 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 20:33:29,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 205 transitions. [2021-12-18 20:33:29,164 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 205 transitions. Word has length 18 [2021-12-18 20:33:29,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 20:33:29,164 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 205 transitions. [2021-12-18 20:33:29,165 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) [2021-12-18 20:33:29,165 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 205 transitions. [2021-12-18 20:33:29,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-18 20:33:29,165 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 20:33:29,166 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 20:33:29,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-18 20:33:29,166 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 58 more)] === [2021-12-18 20:33:29,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 20:33:29,167 INFO L85 PathProgramCache]: Analyzing trace with hash 199814016, now seen corresponding path program 1 times [2021-12-18 20:33:29,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 20:33:29,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899553282] [2021-12-18 20:33:29,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 20:33:29,167 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 20:33:29,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 20:33:29,239 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 20:33:29,239 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 20:33:29,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899553282] [2021-12-18 20:33:29,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899553282] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 20:33:29,240 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 20:33:29,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 20:33:29,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439020888] [2021-12-18 20:33:29,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 20:33:29,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 20:33:29,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 20:33:29,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 20:33:29,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-18 20:33:29,242 INFO L87 Difference]: Start difference. First operand 162 states and 205 transitions. Second operand has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 20:33:29,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 20:33:29,344 INFO L93 Difference]: Finished difference Result 205 states and 224 transitions. [2021-12-18 20:33:29,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-18 20:33:29,345 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-12-18 20:33:29,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 20:33:29,346 INFO L225 Difference]: With dead ends: 205 [2021-12-18 20:33:29,346 INFO L226 Difference]: Without dead ends: 205 [2021-12-18 20:33:29,346 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-12-18 20:33:29,347 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 225 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 20:33:29,347 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [225 Valid, 309 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 20:33:29,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-12-18 20:33:29,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 163. [2021-12-18 20:33:29,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 123 states have (on average 1.6747967479674797) internal successors, (206), 162 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 20:33:29,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 206 transitions. [2021-12-18 20:33:29,351 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 206 transitions. Word has length 23 [2021-12-18 20:33:29,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 20:33:29,352 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 206 transitions. [2021-12-18 20:33:29,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 20:33:29,352 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 206 transitions. [2021-12-18 20:33:29,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-18 20:33:29,353 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 20:33:29,353 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 20:33:29,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-18 20:33:29,353 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 58 more)] === [2021-12-18 20:33:29,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 20:33:29,354 INFO L85 PathProgramCache]: Analyzing trace with hash 198674982, now seen corresponding path program 1 times [2021-12-18 20:33:29,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 20:33:29,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430997897] [2021-12-18 20:33:29,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 20:33:29,354 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 20:33:29,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 20:33:29,452 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 20:33:29,452 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 20:33:29,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430997897] [2021-12-18 20:33:29,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430997897] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 20:33:29,453 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 20:33:29,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 20:33:29,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977472491] [2021-12-18 20:33:29,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 20:33:29,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 20:33:29,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 20:33:29,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 20:33:29,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-18 20:33:29,454 INFO L87 Difference]: Start difference. First operand 163 states and 206 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 20:33:29,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 20:33:29,592 INFO L93 Difference]: Finished difference Result 191 states and 235 transitions. [2021-12-18 20:33:29,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-18 20:33:29,593 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-12-18 20:33:29,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 20:33:29,594 INFO L225 Difference]: With dead ends: 191 [2021-12-18 20:33:29,594 INFO L226 Difference]: Without dead ends: 191 [2021-12-18 20:33:29,594 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-18 20:33:29,594 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 23 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 20:33:29,595 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 399 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 20:33:29,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2021-12-18 20:33:29,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 170. [2021-12-18 20:33:29,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 130 states have (on average 1.646153846153846) internal successors, (214), 169 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 20:33:29,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 214 transitions. [2021-12-18 20:33:29,598 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 214 transitions. Word has length 23 [2021-12-18 20:33:29,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 20:33:29,599 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 214 transitions. [2021-12-18 20:33:29,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 20:33:29,599 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 214 transitions. [2021-12-18 20:33:29,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-18 20:33:29,600 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 20:33:29,600 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 20:33:29,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-18 20:33:29,600 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr56REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 58 more)] === [2021-12-18 20:33:29,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 20:33:29,601 INFO L85 PathProgramCache]: Analyzing trace with hash -165115758, now seen corresponding path program 1 times [2021-12-18 20:33:29,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 20:33:29,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192359100] [2021-12-18 20:33:29,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 20:33:29,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 20:33:29,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 20:33:29,837 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 20:33:29,838 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 20:33:29,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192359100] [2021-12-18 20:33:29,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192359100] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 20:33:29,839 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 20:33:29,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-18 20:33:29,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348526210] [2021-12-18 20:33:29,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 20:33:29,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-18 20:33:29,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 20:33:29,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-18 20:33:29,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-18 20:33:29,841 INFO L87 Difference]: Start difference. First operand 170 states and 214 transitions. Second operand has 11 states, 10 states have (on average 2.6) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 20:33:30,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 20:33:30,342 INFO L93 Difference]: Finished difference Result 228 states and 279 transitions. [2021-12-18 20:33:30,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-18 20:33:30,342 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.6) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-12-18 20:33:30,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 20:33:30,343 INFO L225 Difference]: With dead ends: 228 [2021-12-18 20:33:30,343 INFO L226 Difference]: Without dead ends: 228 [2021-12-18 20:33:30,344 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2021-12-18 20:33:30,344 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 127 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 791 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-18 20:33:30,344 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 491 Invalid, 813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 791 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-18 20:33:30,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2021-12-18 20:33:30,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 177. [2021-12-18 20:33:30,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 137 states have (on average 1.6277372262773722) internal successors, (223), 176 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 20:33:30,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 223 transitions. [2021-12-18 20:33:30,348 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 223 transitions. Word has length 26 [2021-12-18 20:33:30,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 20:33:30,348 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 223 transitions. [2021-12-18 20:33:30,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.6) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 20:33:30,349 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 223 transitions. [2021-12-18 20:33:30,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-18 20:33:30,349 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 20:33:30,349 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 20:33:30,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-18 20:33:30,350 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr57REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 58 more)] === [2021-12-18 20:33:30,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 20:33:30,350 INFO L85 PathProgramCache]: Analyzing trace with hash -165115757, now seen corresponding path program 1 times [2021-12-18 20:33:30,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 20:33:30,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480093015] [2021-12-18 20:33:30,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 20:33:30,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 20:33:30,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 20:33:30,549 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 20:33:30,549 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 20:33:30,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480093015] [2021-12-18 20:33:30,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480093015] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 20:33:30,550 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 20:33:30,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-18 20:33:30,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247683127] [2021-12-18 20:33:30,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 20:33:30,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-18 20:33:30,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 20:33:30,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-18 20:33:30,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-12-18 20:33:30,552 INFO L87 Difference]: Start difference. First operand 177 states and 223 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 20:33:30,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 20:33:30,981 INFO L93 Difference]: Finished difference Result 207 states and 251 transitions. [2021-12-18 20:33:30,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-18 20:33:30,982 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-12-18 20:33:30,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 20:33:30,982 INFO L225 Difference]: With dead ends: 207 [2021-12-18 20:33:30,983 INFO L226 Difference]: Without dead ends: 207 [2021-12-18 20:33:30,983 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2021-12-18 20:33:30,983 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 94 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-18 20:33:30,983 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 354 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-18 20:33:30,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-12-18 20:33:30,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 177. [2021-12-18 20:33:30,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 137 states have (on average 1.6204379562043796) internal successors, (222), 176 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 20:33:30,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 222 transitions. [2021-12-18 20:33:30,987 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 222 transitions. Word has length 26 [2021-12-18 20:33:30,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 20:33:30,987 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 222 transitions. [2021-12-18 20:33:30,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 20:33:30,987 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 222 transitions. [2021-12-18 20:33:30,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-18 20:33:30,988 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 20:33:30,988 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 20:33:30,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-18 20:33:30,988 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 58 more)] === [2021-12-18 20:33:30,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 20:33:30,989 INFO L85 PathProgramCache]: Analyzing trace with hash -823622550, now seen corresponding path program 1 times [2021-12-18 20:33:30,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 20:33:30,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234310454] [2021-12-18 20:33:30,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 20:33:30,990 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 20:33:31,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 20:33:31,088 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 20:33:31,089 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 20:33:31,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234310454] [2021-12-18 20:33:31,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234310454] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 20:33:31,089 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 20:33:31,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-18 20:33:31,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740029337] [2021-12-18 20:33:31,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 20:33:31,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-18 20:33:31,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 20:33:31,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-18 20:33:31,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-12-18 20:33:31,091 INFO L87 Difference]: Start difference. First operand 177 states and 222 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 20:33:31,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 20:33:31,235 INFO L93 Difference]: Finished difference Result 194 states and 238 transitions. [2021-12-18 20:33:31,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-18 20:33:31,236 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-12-18 20:33:31,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 20:33:31,237 INFO L225 Difference]: With dead ends: 194 [2021-12-18 20:33:31,237 INFO L226 Difference]: Without dead ends: 194 [2021-12-18 20:33:31,237 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-12-18 20:33:31,238 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 48 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 20:33:31,238 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 412 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 20:33:31,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-12-18 20:33:31,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 177. [2021-12-18 20:33:31,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 137 states have (on average 1.6131386861313868) internal successors, (221), 176 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 20:33:31,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 221 transitions. [2021-12-18 20:33:31,241 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 221 transitions. Word has length 27 [2021-12-18 20:33:31,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 20:33:31,241 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 221 transitions. [2021-12-18 20:33:31,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 20:33:31,242 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 221 transitions. [2021-12-18 20:33:31,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-18 20:33:31,242 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 20:33:31,242 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 20:33:31,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-18 20:33:31,242 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 58 more)] === [2021-12-18 20:33:31,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 20:33:31,243 INFO L85 PathProgramCache]: Analyzing trace with hash 237551634, now seen corresponding path program 1 times [2021-12-18 20:33:31,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 20:33:31,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920466526] [2021-12-18 20:33:31,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 20:33:31,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 20:33:31,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 20:33:31,371 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 20:33:31,371 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 20:33:31,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920466526] [2021-12-18 20:33:31,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920466526] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 20:33:31,373 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 20:33:31,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-18 20:33:31,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826274482] [2021-12-18 20:33:31,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 20:33:31,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-18 20:33:31,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 20:33:31,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-18 20:33:31,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-12-18 20:33:31,376 INFO L87 Difference]: Start difference. First operand 177 states and 221 transitions. Second operand has 9 states, 8 states have (on average 3.5) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 20:33:31,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 20:33:31,618 INFO L93 Difference]: Finished difference Result 229 states and 275 transitions. [2021-12-18 20:33:31,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-18 20:33:31,619 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-12-18 20:33:31,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 20:33:31,620 INFO L225 Difference]: With dead ends: 229 [2021-12-18 20:33:31,620 INFO L226 Difference]: Without dead ends: 229 [2021-12-18 20:33:31,620 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2021-12-18 20:33:31,621 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 198 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-18 20:33:31,621 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [198 Valid, 463 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-18 20:33:31,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2021-12-18 20:33:31,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 179. [2021-12-18 20:33:31,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 139 states have (on average 1.60431654676259) internal successors, (223), 178 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 20:33:31,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 223 transitions. [2021-12-18 20:33:31,624 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 223 transitions. Word has length 28 [2021-12-18 20:33:31,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 20:33:31,625 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 223 transitions. [2021-12-18 20:33:31,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 20:33:31,625 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 223 transitions. [2021-12-18 20:33:31,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-18 20:33:31,625 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 20:33:31,625 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 20:33:31,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-18 20:33:31,625 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 58 more)] === [2021-12-18 20:33:31,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 20:33:31,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1225833714, now seen corresponding path program 1 times [2021-12-18 20:33:31,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 20:33:31,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284696276] [2021-12-18 20:33:31,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 20:33:31,626 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 20:33:31,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 20:33:31,733 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 20:33:31,734 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 20:33:31,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284696276] [2021-12-18 20:33:31,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284696276] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 20:33:31,734 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 20:33:31,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-18 20:33:31,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119337472] [2021-12-18 20:33:31,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 20:33:31,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-18 20:33:31,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 20:33:31,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-18 20:33:31,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-18 20:33:31,736 INFO L87 Difference]: Start difference. First operand 179 states and 223 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 20:33:31,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 20:33:31,960 INFO L93 Difference]: Finished difference Result 200 states and 244 transitions. [2021-12-18 20:33:31,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-18 20:33:31,961 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-12-18 20:33:31,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 20:33:31,962 INFO L225 Difference]: With dead ends: 200 [2021-12-18 20:33:31,962 INFO L226 Difference]: Without dead ends: 200 [2021-12-18 20:33:31,962 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2021-12-18 20:33:31,963 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 54 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-18 20:33:31,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 504 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-18 20:33:31,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-12-18 20:33:31,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 180. [2021-12-18 20:33:31,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 140 states have (on average 1.6) internal successors, (224), 179 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 20:33:31,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 224 transitions. [2021-12-18 20:33:31,967 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 224 transitions. Word has length 29 [2021-12-18 20:33:31,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 20:33:31,968 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 224 transitions. [2021-12-18 20:33:31,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 20:33:31,968 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 224 transitions. [2021-12-18 20:33:31,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-18 20:33:31,969 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 20:33:31,969 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 20:33:31,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-18 20:33:31,969 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 58 more)] === [2021-12-18 20:33:31,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 20:33:31,970 INFO L85 PathProgramCache]: Analyzing trace with hash 653860756, now seen corresponding path program 1 times [2021-12-18 20:33:31,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 20:33:31,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783427453] [2021-12-18 20:33:31,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 20:33:31,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 20:33:31,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 20:33:31,998 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-18 20:33:31,999 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 20:33:31,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783427453] [2021-12-18 20:33:31,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783427453] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 20:33:31,999 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 20:33:31,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 20:33:32,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793677145] [2021-12-18 20:33:32,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 20:33:32,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 20:33:32,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 20:33:32,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 20:33:32,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 20:33:32,001 INFO L87 Difference]: Start difference. First operand 180 states and 224 transitions. Second operand has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 20:33:32,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 20:33:32,133 INFO L93 Difference]: Finished difference Result 251 states and 315 transitions. [2021-12-18 20:33:32,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 20:33:32,134 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-12-18 20:33:32,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 20:33:32,135 INFO L225 Difference]: With dead ends: 251 [2021-12-18 20:33:32,135 INFO L226 Difference]: Without dead ends: 251 [2021-12-18 20:33:32,135 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-18 20:33:32,136 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 77 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 20:33:32,136 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 230 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 20:33:32,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2021-12-18 20:33:32,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 184. [2021-12-18 20:33:32,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 146 states have (on average 1.6095890410958904) internal successors, (235), 183 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 20:33:32,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 235 transitions. [2021-12-18 20:33:32,140 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 235 transitions. Word has length 30 [2021-12-18 20:33:32,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 20:33:32,140 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 235 transitions. [2021-12-18 20:33:32,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 20:33:32,140 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 235 transitions. [2021-12-18 20:33:32,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-18 20:33:32,140 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 20:33:32,140 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 20:33:32,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-18 20:33:32,141 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr56REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 58 more)] === [2021-12-18 20:33:32,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 20:33:32,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1294968215, now seen corresponding path program 1 times [2021-12-18 20:33:32,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 20:33:32,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604163868] [2021-12-18 20:33:32,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 20:33:32,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 20:33:32,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 20:33:32,426 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 20:33:32,426 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 20:33:32,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604163868] [2021-12-18 20:33:32,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604163868] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 20:33:32,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186166443] [2021-12-18 20:33:32,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 20:33:32,427 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 20:33:32,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 20:33:32,432 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) [2021-12-18 20:33:32,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-18 20:33:32,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 20:33:32,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 48 conjunts are in the unsatisfiable core [2021-12-18 20:33:32,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 20:33:32,637 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-18 20:33:32,652 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-18 20:33:32,700 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-12-18 20:33:32,705 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-12-18 20:33:32,777 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-18 20:33:32,777 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2021-12-18 20:33:32,808 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-18 20:33:32,808 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2021-12-18 20:33:32,896 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-18 20:33:32,897 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 24 [2021-12-18 20:33:32,903 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-12-18 20:33:33,215 INFO L388 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 [2021-12-18 20:33:33,733 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 20:33:33,743 INFO L354 Elim1Store]: treesize reduction 19, result has 29.6 percent of original size [2021-12-18 20:33:33,744 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 76 treesize of output 48 [2021-12-18 20:33:33,755 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 20:33:33,756 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 19 [2021-12-18 20:33:33,765 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-18 20:33:33,766 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-18 20:33:33,861 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 20:33:33,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 20:33:34,069 INFO L388 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 [2021-12-18 20:33:34,707 INFO L354 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2021-12-18 20:33:34,708 INFO L388 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 67 treesize of output 72 [2021-12-18 20:33:34,954 INFO L388 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 57 treesize of output 53 [2021-12-18 20:33:35,178 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_main_~lItem~0#1.base| Int) (v_arrayElimCell_16 Int) (v_ArrVal_422 (Array Int Int))) (let ((.cse2 (= 0 |c_ULTIMATE.start_main_~lItem~0#1.offset|))) (let ((.cse1 (store |c_#memory_$Pointer$.offset| |ULTIMATE.start_main_~lItem~0#1.base| v_ArrVal_422)) (.cse0 (not .cse2))) (or (and .cse0 (= v_arrayElimCell_16 |ULTIMATE.start_main_~lItem~0#1.base|)) (and (= (select (select .cse1 |c_ULTIMATE.start_main_~item~0#1.base|) 0) 0) .cse2) (and (= |c_ULTIMATE.start_main_~item~0#1.base| |ULTIMATE.start_main_~lItem~0#1.base|) .cse2) (and (= (select (select .cse1 v_arrayElimCell_16) 0) 0) .cse0))))) (forall ((v_arrayElimArr_1 (Array Int Int)) (|ULTIMATE.start_main_~lItem~0#1.base| Int)) (let ((.cse3 (select v_arrayElimArr_1 4))) (or (not (= (select v_arrayElimArr_1 (+ |c_ULTIMATE.start_main_~lItem~0#1.offset| 4)) |c_ULTIMATE.start_main_~item~0#1.base|)) (= (select (select (store |c_#memory_$Pointer$.base| |ULTIMATE.start_main_~lItem~0#1.base| v_arrayElimArr_1) .cse3) 0) 0) (= .cse3 |ULTIMATE.start_main_~lItem~0#1.base|))))) is different from false [2021-12-18 20:33:35,448 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_arrayElimArr_1 (Array Int Int)) (|ULTIMATE.start_main_~lItem~0#1.base| Int)) (let ((.cse0 (select v_arrayElimArr_1 4))) (or (not (= .cse0 |c_ULTIMATE.start_main_~item~0#1.base|)) (= (select (select (store |c_#memory_$Pointer$.base| |ULTIMATE.start_main_~lItem~0#1.base| v_arrayElimArr_1) .cse0) 0) 0) (= .cse0 |ULTIMATE.start_main_~lItem~0#1.base|)))) (forall ((|ULTIMATE.start_main_~lItem~0#1.base| Int) (v_ArrVal_422 (Array Int Int))) (or (= (select (select (store |c_#memory_$Pointer$.offset| |ULTIMATE.start_main_~lItem~0#1.base| v_ArrVal_422) |c_ULTIMATE.start_main_~item~0#1.base|) 0) 0) (= |c_ULTIMATE.start_main_~item~0#1.base| |ULTIMATE.start_main_~lItem~0#1.base|)))) is different from false [2021-12-18 20:33:35,482 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_main_~lItem~0#1.base| Int) (v_ArrVal_415 Int) (v_ArrVal_422 (Array Int Int))) (or (= (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~item~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~item~0#1.base|) (+ |c_ULTIMATE.start_main_~item~0#1.offset| 4) v_ArrVal_415)) |ULTIMATE.start_main_~lItem~0#1.base| v_ArrVal_422) |c_ULTIMATE.start_main_~item~0#1.base|) 0) 0) (= |c_ULTIMATE.start_main_~item~0#1.base| |ULTIMATE.start_main_~lItem~0#1.base|))) (forall ((v_arrayElimArr_1 (Array Int Int)) (|ULTIMATE.start_main_~lItem~0#1.base| Int) (v_ArrVal_418 Int)) (let ((.cse0 (select v_arrayElimArr_1 4))) (or (not (= .cse0 |c_ULTIMATE.start_main_~item~0#1.base|)) (= (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base|) (+ |c_ULTIMATE.start_main_~item~0#1.offset| 4) v_ArrVal_418)) |ULTIMATE.start_main_~lItem~0#1.base| v_arrayElimArr_1) .cse0) 0) 0) (= .cse0 |ULTIMATE.start_main_~lItem~0#1.base|))))) is different from false [2021-12-18 20:33:35,529 INFO L354 Elim1Store]: treesize reduction 23, result has 50.0 percent of original size [2021-12-18 20:33:35,529 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 35 [2021-12-18 20:33:35,531 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 20:33:35,535 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-18 20:33:35,536 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 20 treesize of output 11 [2021-12-18 20:33:35,541 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 20:33:35,543 INFO L354 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2021-12-18 20:33:35,543 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 1 [2021-12-18 20:33:35,549 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 20:33:35,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1186166443] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 20:33:35,549 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 20:33:35,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 18, 18] total 41 [2021-12-18 20:33:35,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965092966] [2021-12-18 20:33:35,550 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 20:33:35,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-12-18 20:33:35,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 20:33:35,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-12-18 20:33:35,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1238, Unknown=7, NotChecked=222, Total=1640 [2021-12-18 20:33:35,551 INFO L87 Difference]: Start difference. First operand 184 states and 235 transitions. Second operand has 41 states, 41 states have (on average 1.8048780487804879) internal successors, (74), 41 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 20:33:35,573 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_main_~lItem~0#1.base| Int) (v_ArrVal_415 Int) (v_ArrVal_422 (Array Int Int))) (or (= (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~item~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~item~0#1.base|) (+ |c_ULTIMATE.start_main_~item~0#1.offset| 4) v_ArrVal_415)) |ULTIMATE.start_main_~lItem~0#1.base| v_ArrVal_422) |c_ULTIMATE.start_main_~item~0#1.base|) 0) 0) (= |c_ULTIMATE.start_main_~item~0#1.base| |ULTIMATE.start_main_~lItem~0#1.base|))) (forall ((v_arrayElimArr_1 (Array Int Int)) (|ULTIMATE.start_main_~lItem~0#1.base| Int) (v_ArrVal_418 Int)) (let ((.cse0 (select v_arrayElimArr_1 4))) (or (not (= .cse0 |c_ULTIMATE.start_main_~item~0#1.base|)) (= (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base|) (+ |c_ULTIMATE.start_main_~item~0#1.offset| 4) v_ArrVal_418)) |ULTIMATE.start_main_~lItem~0#1.base| v_arrayElimArr_1) .cse0) 0) 0) (= .cse0 |ULTIMATE.start_main_~lItem~0#1.base|)))) (= (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|) 0) (= 1 (select |c_#valid| |c_ULTIMATE.start_main_~item~0#1.base|)) (= |c_ULTIMATE.start_main_~item~0#1.offset| 0) (= (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|) 0)) is different from false [2021-12-18 20:33:35,577 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_arrayElimArr_1 (Array Int Int)) (|ULTIMATE.start_main_~lItem~0#1.base| Int)) (let ((.cse0 (select v_arrayElimArr_1 4))) (or (not (= .cse0 |c_ULTIMATE.start_main_~item~0#1.base|)) (= (select (select (store |c_#memory_$Pointer$.base| |ULTIMATE.start_main_~lItem~0#1.base| v_arrayElimArr_1) .cse0) 0) 0) (= .cse0 |ULTIMATE.start_main_~lItem~0#1.base|)))) (forall ((|ULTIMATE.start_main_~lItem~0#1.base| Int) (v_ArrVal_422 (Array Int Int))) (or (= (select (select (store |c_#memory_$Pointer$.offset| |ULTIMATE.start_main_~lItem~0#1.base| v_ArrVal_422) |c_ULTIMATE.start_main_~item~0#1.base|) 0) 0) (= |c_ULTIMATE.start_main_~item~0#1.base| |ULTIMATE.start_main_~lItem~0#1.base|))) (= (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|) 0) (= 1 (select |c_#valid| |c_ULTIMATE.start_main_~item~0#1.base|)) (= |c_ULTIMATE.start_main_~item~0#1.offset| 0) (= (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|) 0)) is different from false [2021-12-18 20:33:35,581 WARN L838 $PredicateComparison]: unable to prove that (and (= (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|) 0) (forall ((|ULTIMATE.start_main_~lItem~0#1.base| Int) (v_arrayElimCell_16 Int) (v_ArrVal_422 (Array Int Int))) (let ((.cse2 (= 0 |c_ULTIMATE.start_main_~lItem~0#1.offset|))) (let ((.cse1 (store |c_#memory_$Pointer$.offset| |ULTIMATE.start_main_~lItem~0#1.base| v_ArrVal_422)) (.cse0 (not .cse2))) (or (and .cse0 (= v_arrayElimCell_16 |ULTIMATE.start_main_~lItem~0#1.base|)) (and (= (select (select .cse1 |c_ULTIMATE.start_main_~item~0#1.base|) 0) 0) .cse2) (and (= |c_ULTIMATE.start_main_~item~0#1.base| |ULTIMATE.start_main_~lItem~0#1.base|) .cse2) (and (= (select (select .cse1 v_arrayElimCell_16) 0) 0) .cse0))))) (not (= |c_ULTIMATE.start_main_~item~0#1.base| |c_ULTIMATE.start_main_~lItem~0#1.base|)) (= |c_ULTIMATE.start_main_~item~0#1.offset| 0) (= |c_ULTIMATE.start_main_~lItem~0#1.offset| 0) (forall ((v_arrayElimArr_1 (Array Int Int)) (|ULTIMATE.start_main_~lItem~0#1.base| Int)) (let ((.cse3 (select v_arrayElimArr_1 4))) (or (not (= (select v_arrayElimArr_1 (+ |c_ULTIMATE.start_main_~lItem~0#1.offset| 4)) |c_ULTIMATE.start_main_~item~0#1.base|)) (= (select (select (store |c_#memory_$Pointer$.base| |ULTIMATE.start_main_~lItem~0#1.base| v_arrayElimArr_1) .cse3) 0) 0) (= .cse3 |ULTIMATE.start_main_~lItem~0#1.base|)))) (= (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|) 0)) is different from false [2021-12-18 20:33:35,707 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (= (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|) 0)) (.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~data~0#1.base|) (+ |c_ULTIMATE.start_main_~data~0#1.offset| 4))) (.cse3 (= (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|) 0))) (and (forall ((|ULTIMATE.start_main_~lItem~0#1.base| Int) (v_ArrVal_415 Int) (v_ArrVal_422 (Array Int Int))) (or (= (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~item~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~item~0#1.base|) (+ |c_ULTIMATE.start_main_~item~0#1.offset| 4) v_ArrVal_415)) |ULTIMATE.start_main_~lItem~0#1.base| v_ArrVal_422) |c_ULTIMATE.start_main_~item~0#1.base|) 0) 0) (= |c_ULTIMATE.start_main_~item~0#1.base| |ULTIMATE.start_main_~lItem~0#1.base|))) (= (select (select |c_#memory_$Pointer$.base| .cse0) 0) 0) (forall ((v_arrayElimArr_1 (Array Int Int)) (|ULTIMATE.start_main_~lItem~0#1.base| Int) (v_ArrVal_418 Int)) (let ((.cse1 (select v_arrayElimArr_1 4))) (or (not (= .cse1 |c_ULTIMATE.start_main_~item~0#1.base|)) (= (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base|) (+ |c_ULTIMATE.start_main_~item~0#1.offset| 4) v_ArrVal_418)) |ULTIMATE.start_main_~lItem~0#1.base| v_arrayElimArr_1) .cse1) 0) 0) (= .cse1 |ULTIMATE.start_main_~lItem~0#1.base|)))) .cse2 (or (and .cse2 .cse3) (not (= 0 |c_ULTIMATE.start_main_~item~0#1.offset|))) (= |c_ULTIMATE.start_main_~data~0#1.offset| 0) (= 1 (select |c_#valid| |c_ULTIMATE.start_main_~item~0#1.base|)) (= |c_ULTIMATE.start_main_~item~0#1.offset| 0) (= (select (select |c_#memory_$Pointer$.offset| .cse0) 0) 0) .cse3)) is different from false [2021-12-18 20:33:36,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 20:33:36,157 INFO L93 Difference]: Finished difference Result 209 states and 261 transitions. [2021-12-18 20:33:36,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-18 20:33:36,158 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.8048780487804879) internal successors, (74), 41 states have internal predecessors, (74), 0 states have call successors, (0), 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 32 [2021-12-18 20:33:36,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 20:33:36,159 INFO L225 Difference]: With dead ends: 209 [2021-12-18 20:33:36,159 INFO L226 Difference]: Without dead ends: 209 [2021-12-18 20:33:36,160 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 38 SyntacticMatches, 4 SemanticMatches, 52 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 747 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=290, Invalid=1889, Unknown=11, NotChecked=672, Total=2862 [2021-12-18 20:33:36,160 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 194 mSDsluCounter, 1091 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 1190 SdHoareTripleChecker+Invalid, 1331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 850 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-18 20:33:36,161 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [194 Valid, 1190 Invalid, 1331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 442 Invalid, 0 Unknown, 850 Unchecked, 0.3s Time] [2021-12-18 20:33:36,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2021-12-18 20:33:36,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 186. [2021-12-18 20:33:36,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 148 states have (on average 1.6013513513513513) internal successors, (237), 185 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 20:33:36,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 237 transitions. [2021-12-18 20:33:36,165 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 237 transitions. Word has length 32 [2021-12-18 20:33:36,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 20:33:36,165 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 237 transitions. [2021-12-18 20:33:36,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.8048780487804879) internal successors, (74), 41 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 20:33:36,166 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 237 transitions. [2021-12-18 20:33:36,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-18 20:33:36,167 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 20:33:36,167 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 20:33:36,195 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-18 20:33:36,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 20:33:36,392 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 58 more)] === [2021-12-18 20:33:36,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 20:33:36,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1489307653, now seen corresponding path program 1 times [2021-12-18 20:33:36,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 20:33:36,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33157725] [2021-12-18 20:33:36,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 20:33:36,393 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 20:33:36,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 20:33:36,767 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 20:33:36,767 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 20:33:36,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33157725] [2021-12-18 20:33:36,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33157725] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 20:33:36,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931830190] [2021-12-18 20:33:36,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 20:33:36,768 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 20:33:36,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 20:33:36,772 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) [2021-12-18 20:33:36,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-18 20:33:36,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 20:33:36,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 32 conjunts are in the unsatisfiable core [2021-12-18 20:33:36,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 20:33:37,065 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-18 20:33:37,205 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 20:33:37,206 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 36 [2021-12-18 20:33:37,688 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 20:33:37,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 20:33:38,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 100 [2021-12-18 20:33:38,339 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 80 [2021-12-18 20:34:01,075 WARN L227 SmtUtils]: Spent 22.11s on a formula simplification. DAG size of input: 50 DAG size of output: 47 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-18 20:34:05,667 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 20:34:05,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1931830190] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 20:34:05,667 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 20:34:05,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 14] total 35 [2021-12-18 20:34:05,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939557074] [2021-12-18 20:34:05,668 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 20:34:05,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-12-18 20:34:05,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 20:34:05,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-12-18 20:34:05,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=1124, Unknown=0, NotChecked=0, Total=1260 [2021-12-18 20:34:05,669 INFO L87 Difference]: Start difference. First operand 186 states and 237 transitions. Second operand has 36 states, 35 states have (on average 2.5142857142857142) internal successors, (88), 36 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) [2021-12-18 20:34:06,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 20:34:06,235 INFO L93 Difference]: Finished difference Result 188 states and 238 transitions. [2021-12-18 20:34:06,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-18 20:34:06,236 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 2.5142857142857142) internal successors, (88), 36 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-12-18 20:34:06,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 20:34:06,237 INFO L225 Difference]: With dead ends: 188 [2021-12-18 20:34:06,237 INFO L226 Difference]: Without dead ends: 171 [2021-12-18 20:34:06,238 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 41 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 27.3s TimeCoverageRelationStatistics Valid=182, Invalid=1540, Unknown=0, NotChecked=0, Total=1722 [2021-12-18 20:34:06,238 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 24 mSDsluCounter, 800 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 898 SdHoareTripleChecker+Invalid, 886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 437 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-18 20:34:06,239 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 898 Invalid, 886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 442 Invalid, 0 Unknown, 437 Unchecked, 0.3s Time] [2021-12-18 20:34:06,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2021-12-18 20:34:06,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2021-12-18 20:34:06,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 133 states have (on average 1.6616541353383458) internal successors, (221), 170 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 20:34:06,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 221 transitions. [2021-12-18 20:34:06,242 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 221 transitions. Word has length 33 [2021-12-18 20:34:06,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 20:34:06,242 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 221 transitions. [2021-12-18 20:34:06,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 2.5142857142857142) internal successors, (88), 36 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) [2021-12-18 20:34:06,242 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 221 transitions. [2021-12-18 20:34:06,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-18 20:34:06,242 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 20:34:06,242 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 20:34:06,269 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-18 20:34:06,443 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,SelfDestructingSolverStorable19 [2021-12-18 20:34:06,443 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 58 more)] === [2021-12-18 20:34:06,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 20:34:06,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1756679628, now seen corresponding path program 1 times [2021-12-18 20:34:06,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 20:34:06,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161731282] [2021-12-18 20:34:06,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 20:34:06,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 20:34:06,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 20:34:06,575 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 20:34:06,575 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 20:34:06,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161731282] [2021-12-18 20:34:06,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161731282] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 20:34:06,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238420886] [2021-12-18 20:34:06,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 20:34:06,576 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 20:34:06,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 20:34:06,577 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) [2021-12-18 20:34:06,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-18 20:34:06,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 20:34:06,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 33 conjunts are in the unsatisfiable core [2021-12-18 20:34:06,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 20:34:06,718 INFO L388 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 [2021-12-18 20:34:06,746 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-18 20:34:06,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-12-18 20:34:06,763 INFO L388 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 [2021-12-18 20:34:06,769 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-18 20:34:06,770 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-18 20:34:06,825 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-18 20:34:06,831 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-18 20:34:06,856 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-18 20:34:06,857 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-12-18 20:34:06,861 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2021-12-18 20:34:06,952 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-12-18 20:34:06,956 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 15 treesize of output 7 [2021-12-18 20:34:06,975 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 20:34:06,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 20:34:07,059 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_623 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~lItem~0#1.base| v_ArrVal_623) |c_ULTIMATE.start_main_~data~0#1.base|) |c_ULTIMATE.start_main_~data~0#1.offset|) 4))) (forall ((v_ArrVal_623 (Array Int Int)) (v_ArrVal_624 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~lItem~0#1.base| v_ArrVal_623) |c_ULTIMATE.start_main_~data~0#1.base|) |c_ULTIMATE.start_main_~data~0#1.offset|) 8) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~lItem~0#1.base| v_ArrVal_624) |c_ULTIMATE.start_main_~data~0#1.base|) |c_ULTIMATE.start_main_~data~0#1.offset|))))) is different from false [2021-12-18 20:34:07,067 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 20:34:07,067 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 38 [2021-12-18 20:34:07,072 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 20:34:07,072 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2021-12-18 20:34:07,075 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 44 [2021-12-18 20:34:07,077 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 70 [2021-12-18 20:34:07,081 INFO L388 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 34 treesize of output 30 [2021-12-18 20:34:07,083 INFO L388 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 62 treesize of output 58 [2021-12-18 20:34:07,125 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 20:34:07,125 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 21 [2021-12-18 20:34:07,127 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 20:34:07,129 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 18 treesize of output 10 [2021-12-18 20:34:07,263 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-12-18 20:34:07,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1238420886] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 20:34:07,263 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 20:34:07,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 18 [2021-12-18 20:34:07,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221342568] [2021-12-18 20:34:07,263 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 20:34:07,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-18 20:34:07,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 20:34:07,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-18 20:34:07,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=254, Unknown=1, NotChecked=32, Total=342 [2021-12-18 20:34:07,264 INFO L87 Difference]: Start difference. First operand 171 states and 221 transitions. Second operand has 19 states, 18 states have (on average 4.888888888888889) internal successors, (88), 19 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) [2021-12-18 20:34:07,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 20:34:07,822 INFO L93 Difference]: Finished difference Result 190 states and 236 transitions. [2021-12-18 20:34:07,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-18 20:34:07,823 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 4.888888888888889) internal successors, (88), 19 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-12-18 20:34:07,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 20:34:07,824 INFO L225 Difference]: With dead ends: 190 [2021-12-18 20:34:07,824 INFO L226 Difference]: Without dead ends: 190 [2021-12-18 20:34:07,824 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 64 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=135, Invalid=518, Unknown=1, NotChecked=48, Total=702 [2021-12-18 20:34:07,825 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 173 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 762 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 103 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-18 20:34:07,825 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [173 Valid, 619 Invalid, 885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 762 Invalid, 0 Unknown, 103 Unchecked, 0.4s Time] [2021-12-18 20:34:07,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-12-18 20:34:07,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 171. [2021-12-18 20:34:07,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 133 states have (on average 1.6541353383458646) internal successors, (220), 170 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 20:34:07,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 220 transitions. [2021-12-18 20:34:07,828 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 220 transitions. Word has length 37 [2021-12-18 20:34:07,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 20:34:07,828 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 220 transitions. [2021-12-18 20:34:07,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 4.888888888888889) internal successors, (88), 19 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) [2021-12-18 20:34:07,829 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 220 transitions. [2021-12-18 20:34:07,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-18 20:34:07,829 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 20:34:07,829 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 20:34:07,855 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-18 20:34:08,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 20:34:08,040 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 58 more)] === [2021-12-18 20:34:08,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 20:34:08,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1756679629, now seen corresponding path program 1 times [2021-12-18 20:34:08,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 20:34:08,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197136857] [2021-12-18 20:34:08,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 20:34:08,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 20:34:08,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 20:34:08,146 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 20:34:08,147 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 20:34:08,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197136857] [2021-12-18 20:34:08,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197136857] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 20:34:08,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664119492] [2021-12-18 20:34:08,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 20:34:08,147 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 20:34:08,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 20:34:08,152 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) [2021-12-18 20:34:08,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-18 20:34:08,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 20:34:08,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 25 conjunts are in the unsatisfiable core [2021-12-18 20:34:08,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 20:34:08,283 INFO L388 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 [2021-12-18 20:34:08,312 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-18 20:34:08,313 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-12-18 20:34:08,336 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-18 20:34:08,337 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-12-18 20:34:08,380 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-18 20:34:08,404 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-18 20:34:08,404 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2021-12-18 20:34:08,465 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-12-18 20:34:08,481 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 20:34:08,481 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 20:34:08,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664119492] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 20:34:08,481 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 20:34:08,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 13 [2021-12-18 20:34:08,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661543313] [2021-12-18 20:34:08,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 20:34:08,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-18 20:34:08,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 20:34:08,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-18 20:34:08,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-12-18 20:34:08,483 INFO L87 Difference]: Start difference. First operand 171 states and 220 transitions. Second operand has 8 states, 7 states have (on average 5.285714285714286) internal successors, (37), 8 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 20:34:08,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 20:34:08,686 INFO L93 Difference]: Finished difference Result 176 states and 222 transitions. [2021-12-18 20:34:08,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-18 20:34:08,689 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.285714285714286) internal successors, (37), 8 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2021-12-18 20:34:08,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 20:34:08,690 INFO L225 Difference]: With dead ends: 176 [2021-12-18 20:34:08,690 INFO L226 Difference]: Without dead ends: 176 [2021-12-18 20:34:08,690 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2021-12-18 20:34:08,690 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 83 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 72 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-18 20:34:08,691 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 291 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 239 Invalid, 0 Unknown, 72 Unchecked, 0.2s Time] [2021-12-18 20:34:08,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-12-18 20:34:08,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 171. [2021-12-18 20:34:08,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 133 states have (on average 1.6466165413533835) internal successors, (219), 170 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 20:34:08,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 219 transitions. [2021-12-18 20:34:08,694 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 219 transitions. Word has length 37 [2021-12-18 20:34:08,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 20:34:08,694 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 219 transitions. [2021-12-18 20:34:08,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.285714285714286) internal successors, (37), 8 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 20:34:08,694 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 219 transitions. [2021-12-18 20:34:08,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-12-18 20:34:08,694 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 20:34:08,694 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 20:34:08,719 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-18 20:34:08,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 20:34:08,895 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr56REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 58 more)] === [2021-12-18 20:34:08,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 20:34:08,895 INFO L85 PathProgramCache]: Analyzing trace with hash 507133380, now seen corresponding path program 1 times [2021-12-18 20:34:08,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 20:34:08,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736532247] [2021-12-18 20:34:08,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 20:34:08,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 20:34:08,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 20:34:09,002 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 20:34:09,003 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 20:34:09,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736532247] [2021-12-18 20:34:09,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736532247] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 20:34:09,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511138525] [2021-12-18 20:34:09,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 20:34:09,004 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 20:34:09,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 20:34:09,005 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) [2021-12-18 20:34:09,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-18 20:34:09,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 20:34:09,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 21 conjunts are in the unsatisfiable core [2021-12-18 20:34:09,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 20:34:09,142 INFO L388 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 [2021-12-18 20:34:09,167 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-18 20:34:09,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-12-18 20:34:09,183 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-18 20:34:09,183 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-18 20:34:09,197 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-18 20:34:09,206 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-18 20:34:09,207 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 22 [2021-12-18 20:34:09,218 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2021-12-18 20:34:09,229 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 20:34:09,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 20:34:09,257 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_887 (Array Int Int))) (not (= |c_ULTIMATE.start_main_~data~0#1.base| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~lItem~0#1.base| v_ArrVal_887) |c_ULTIMATE.start_main_~data~0#1.base|) |c_ULTIMATE.start_main_~data~0#1.offset|)))) is different from false [2021-12-18 20:34:09,262 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 20:34:09,262 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 20 [2021-12-18 20:34:09,263 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 25 [2021-12-18 20:34:09,267 INFO L388 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 6 treesize of output 4 [2021-12-18 20:34:09,346 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-12-18 20:34:09,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [511138525] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 20:34:09,346 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 20:34:09,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 12 [2021-12-18 20:34:09,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723696991] [2021-12-18 20:34:09,347 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 20:34:09,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-18 20:34:09,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 20:34:09,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-18 20:34:09,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=84, Unknown=1, NotChecked=18, Total=132 [2021-12-18 20:34:09,348 INFO L87 Difference]: Start difference. First operand 171 states and 219 transitions. Second operand has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 20:34:09,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 20:34:09,584 INFO L93 Difference]: Finished difference Result 171 states and 216 transitions. [2021-12-18 20:34:09,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-18 20:34:09,584 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 0 states have call successors, (0), 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 40 [2021-12-18 20:34:09,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 20:34:09,585 INFO L225 Difference]: With dead ends: 171 [2021-12-18 20:34:09,585 INFO L226 Difference]: Without dead ends: 171 [2021-12-18 20:34:09,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 76 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=94, Invalid=251, Unknown=1, NotChecked=34, Total=380 [2021-12-18 20:34:09,586 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 138 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 85 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-18 20:34:09,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 456 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 309 Invalid, 0 Unknown, 85 Unchecked, 0.2s Time] [2021-12-18 20:34:09,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2021-12-18 20:34:09,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 167. [2021-12-18 20:34:09,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 129 states have (on average 1.6589147286821706) internal successors, (214), 166 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 20:34:09,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 214 transitions. [2021-12-18 20:34:09,589 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 214 transitions. Word has length 40 [2021-12-18 20:34:09,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 20:34:09,589 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 214 transitions. [2021-12-18 20:34:09,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 20:34:09,589 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 214 transitions. [2021-12-18 20:34:09,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-12-18 20:34:09,589 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 20:34:09,590 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 20:34:09,618 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-18 20:34:09,803 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,SelfDestructingSolverStorable22 [2021-12-18 20:34:09,804 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 58 more)] === [2021-12-18 20:34:09,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 20:34:09,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1119299147, now seen corresponding path program 1 times [2021-12-18 20:34:09,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 20:34:09,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452854099] [2021-12-18 20:34:09,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 20:34:09,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 20:34:09,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 20:34:09,862 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-18 20:34:09,862 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 20:34:09,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452854099] [2021-12-18 20:34:09,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452854099] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 20:34:09,863 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 20:34:09,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-18 20:34:09,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125473887] [2021-12-18 20:34:09,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 20:34:09,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 20:34:09,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 20:34:09,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 20:34:09,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-18 20:34:09,864 INFO L87 Difference]: Start difference. First operand 167 states and 214 transitions. Second operand has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 20:34:09,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 20:34:09,990 INFO L93 Difference]: Finished difference Result 166 states and 212 transitions. [2021-12-18 20:34:09,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-18 20:34:09,990 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 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 [2021-12-18 20:34:09,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 20:34:09,991 INFO L225 Difference]: With dead ends: 166 [2021-12-18 20:34:09,992 INFO L226 Difference]: Without dead ends: 166 [2021-12-18 20:34:09,992 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-18 20:34:09,993 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 25 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 20:34:09,993 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 305 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 20:34:09,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-12-18 20:34:09,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2021-12-18 20:34:09,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 129 states have (on average 1.6434108527131783) internal successors, (212), 165 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 20:34:09,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 212 transitions. [2021-12-18 20:34:09,996 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 212 transitions. Word has length 41 [2021-12-18 20:34:09,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 20:34:09,997 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 212 transitions. [2021-12-18 20:34:09,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 20:34:09,997 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 212 transitions. [2021-12-18 20:34:09,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-12-18 20:34:09,998 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 20:34:09,998 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 20:34:09,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-18 20:34:09,998 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 58 more)] === [2021-12-18 20:34:09,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 20:34:09,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1119299146, now seen corresponding path program 1 times [2021-12-18 20:34:09,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 20:34:09,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699482113] [2021-12-18 20:34:09,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 20:34:09,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 20:34:10,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 20:34:10,168 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 20:34:10,169 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 20:34:10,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699482113] [2021-12-18 20:34:10,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699482113] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 20:34:10,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37213552] [2021-12-18 20:34:10,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 20:34:10,169 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 20:34:10,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 20:34:10,170 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) [2021-12-18 20:34:10,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-18 20:34:10,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 20:34:10,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 28 conjunts are in the unsatisfiable core [2021-12-18 20:34:10,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 20:34:10,401 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-18 20:34:10,438 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-12-18 20:34:10,439 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 23 [2021-12-18 20:34:10,598 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2021-12-18 20:34:10,602 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2021-12-18 20:34:10,638 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 20:34:10,638 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 20:34:10,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [37213552] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 20:34:10,638 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 20:34:10,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [11] total 21 [2021-12-18 20:34:10,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217459399] [2021-12-18 20:34:10,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 20:34:10,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-18 20:34:10,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 20:34:10,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-18 20:34:10,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=393, Unknown=0, NotChecked=0, Total=462 [2021-12-18 20:34:10,640 INFO L87 Difference]: Start difference. First operand 166 states and 212 transitions. Second operand has 12 states, 11 states have (on average 3.727272727272727) internal successors, (41), 12 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 20:34:11,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 20:34:11,011 INFO L93 Difference]: Finished difference Result 226 states and 253 transitions. [2021-12-18 20:34:11,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-18 20:34:11,011 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.727272727272727) internal successors, (41), 12 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-12-18 20:34:11,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 20:34:11,012 INFO L225 Difference]: With dead ends: 226 [2021-12-18 20:34:11,012 INFO L226 Difference]: Without dead ends: 226 [2021-12-18 20:34:11,013 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=152, Invalid=660, Unknown=0, NotChecked=0, Total=812 [2021-12-18 20:34:11,013 INFO L933 BasicCegarLoop]: 77 mSDtfsCounter, 571 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 571 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-18 20:34:11,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [571 Valid, 369 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-18 20:34:11,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-12-18 20:34:11,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 166. [2021-12-18 20:34:11,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 129 states have (on average 1.627906976744186) internal successors, (210), 165 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 20:34:11,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 210 transitions. [2021-12-18 20:34:11,023 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 210 transitions. Word has length 41 [2021-12-18 20:34:11,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 20:34:11,024 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 210 transitions. [2021-12-18 20:34:11,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.727272727272727) internal successors, (41), 12 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 20:34:11,024 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 210 transitions. [2021-12-18 20:34:11,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-18 20:34:11,025 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 20:34:11,025 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 20:34:11,054 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-18 20:34:11,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 20:34:11,226 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 58 more)] === [2021-12-18 20:34:11,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 20:34:11,226 INFO L85 PathProgramCache]: Analyzing trace with hash -716785192, now seen corresponding path program 1 times [2021-12-18 20:34:11,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 20:34:11,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057056175] [2021-12-18 20:34:11,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 20:34:11,227 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 20:34:11,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 20:34:11,354 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 20:34:11,354 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 20:34:11,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057056175] [2021-12-18 20:34:11,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057056175] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 20:34:11,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642275688] [2021-12-18 20:34:11,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 20:34:11,355 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 20:34:11,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 20:34:11,356 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) [2021-12-18 20:34:11,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-18 20:34:11,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 20:34:11,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-18 20:34:11,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 20:34:11,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-18 20:34:11,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 20:34:11,639 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-18 20:34:11,699 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-18 20:34:11,716 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 20:34:11,717 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 20:34:11,924 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 20:34:11,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1642275688] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 20:34:11,925 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 20:34:11,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 18 [2021-12-18 20:34:11,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434618205] [2021-12-18 20:34:11,925 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 20:34:11,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-18 20:34:11,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 20:34:11,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-18 20:34:11,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2021-12-18 20:34:11,926 INFO L87 Difference]: Start difference. First operand 166 states and 210 transitions. Second operand has 19 states, 18 states have (on average 5.277777777777778) internal successors, (95), 19 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 20:34:12,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 20:34:12,406 INFO L93 Difference]: Finished difference Result 186 states and 212 transitions. [2021-12-18 20:34:12,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-12-18 20:34:12,412 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 5.277777777777778) internal successors, (95), 19 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-12-18 20:34:12,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 20:34:12,413 INFO L225 Difference]: With dead ends: 186 [2021-12-18 20:34:12,413 INFO L226 Difference]: Without dead ends: 186 [2021-12-18 20:34:12,414 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 83 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 404 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=341, Invalid=1219, Unknown=0, NotChecked=0, Total=1560 [2021-12-18 20:34:12,415 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 475 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 11 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-18 20:34:12,416 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [475 Valid, 574 Invalid, 495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 433 Invalid, 0 Unknown, 11 Unchecked, 0.2s Time] [2021-12-18 20:34:12,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2021-12-18 20:34:12,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 166. [2021-12-18 20:34:12,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 129 states have (on average 1.62015503875969) internal successors, (209), 165 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 20:34:12,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 209 transitions. [2021-12-18 20:34:12,421 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 209 transitions. Word has length 45 [2021-12-18 20:34:12,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 20:34:12,421 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 209 transitions. [2021-12-18 20:34:12,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 5.277777777777778) internal successors, (95), 19 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 20:34:12,422 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 209 transitions. [2021-12-18 20:34:12,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-18 20:34:12,423 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 20:34:12,423 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 20:34:12,464 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-18 20:34:12,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 20:34:12,647 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 58 more)] === [2021-12-18 20:34:12,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 20:34:12,647 INFO L85 PathProgramCache]: Analyzing trace with hash 829868235, now seen corresponding path program 1 times [2021-12-18 20:34:12,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 20:34:12,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017015027] [2021-12-18 20:34:12,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 20:34:12,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 20:34:12,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 20:34:13,009 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 20:34:13,009 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 20:34:13,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017015027] [2021-12-18 20:34:13,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017015027] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 20:34:13,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586827722] [2021-12-18 20:34:13,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 20:34:13,010 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 20:34:13,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 20:34:13,011 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) [2021-12-18 20:34:13,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-18 20:34:13,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 20:34:13,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 59 conjunts are in the unsatisfiable core [2021-12-18 20:34:13,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 20:34:13,178 INFO L388 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 [2021-12-18 20:34:13,196 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-18 20:34:13,196 INFO L388 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 14 [2021-12-18 20:34:13,255 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-18 20:34:13,306 INFO L354 Elim1Store]: treesize reduction 60, result has 31.0 percent of original size [2021-12-18 20:34:13,306 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 41 [2021-12-18 20:34:13,364 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-12-18 20:34:13,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-12-18 20:34:13,486 INFO L354 Elim1Store]: treesize reduction 78, result has 31.6 percent of original size [2021-12-18 20:34:13,487 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 31 treesize of output 53 [2021-12-18 20:34:13,636 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 30 [2021-12-18 20:34:13,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 20:34:13,709 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 28 [2021-12-18 20:34:13,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 20:34:13,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 20:34:13,796 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-12-18 20:34:13,797 INFO L388 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 48 [2021-12-18 20:34:14,266 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 20:34:14,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 20:34:14,268 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 62 treesize of output 28 [2021-12-18 20:34:14,275 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-12-18 20:34:14,620 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-18 20:34:14,620 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 30 [2021-12-18 20:34:14,683 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 20:34:14,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 20:34:15,007 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2021-12-18 20:34:20,165 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 20:34:20,165 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 306 treesize of output 196 [2021-12-18 20:34:20,170 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 20:34:20,183 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 20:34:20,184 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1702 treesize of output 1688 [2021-12-18 20:34:20,206 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 20:34:20,211 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 20:34:20,211 INFO L388 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 0 case distinctions, treesize of input 2160 treesize of output 2000 [2021-12-18 20:34:20,224 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 20:34:20,229 INFO L388 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 1201 treesize of output 1169 [2021-12-18 20:34:20,250 INFO L388 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 8 treesize of output 4 [2021-12-18 20:34:20,271 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 20:34:20,292 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 20:34:20,292 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 2220 treesize of output 2196 Killed by 15