./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety-ext/dll_extends_pointer.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 3a877d22 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-ext/dll_extends_pointer.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 b19ed65fc9d9f8e19f4d644b05d37e3da28cb107a90eedb15c652c094a7f23f1 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 14:00:49,287 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 14:00:49,290 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 14:00:49,351 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 14:00:49,351 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 14:00:49,354 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 14:00:49,356 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 14:00:49,360 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 14:00:49,361 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 14:00:49,362 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 14:00:49,362 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 14:00:49,363 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 14:00:49,364 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 14:00:49,365 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 14:00:49,366 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 14:00:49,366 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 14:00:49,367 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 14:00:49,368 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 14:00:49,369 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 14:00:49,370 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 14:00:49,371 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 14:00:49,372 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 14:00:49,372 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 14:00:49,373 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 14:00:49,375 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 14:00:49,375 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 14:00:49,375 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 14:00:49,376 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 14:00:49,376 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 14:00:49,377 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 14:00:49,377 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 14:00:49,378 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 14:00:49,378 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 14:00:49,379 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 14:00:49,379 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 14:00:49,380 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 14:00:49,380 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 14:00:49,380 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 14:00:49,380 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 14:00:49,381 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 14:00:49,382 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 14:00:49,382 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-15 14:00:49,399 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 14:00:49,402 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 14:00:49,402 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 14:00:49,403 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 14:00:49,403 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 14:00:49,404 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 14:00:49,404 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 14:00:49,404 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 14:00:49,405 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 14:00:49,405 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 14:00:49,405 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 14:00:49,406 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-15 14:00:49,406 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 14:00:49,406 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 14:00:49,406 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 14:00:49,406 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-15 14:00:49,406 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-15 14:00:49,406 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-15 14:00:49,407 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 14:00:49,407 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 14:00:49,407 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 14:00:49,407 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 14:00:49,407 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 14:00:49,407 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 14:00:49,408 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 14:00:49,408 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 14:00:49,408 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 14:00:49,408 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 14:00:49,408 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 14:00:49,408 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 14:00:49,409 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 14:00:49,409 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b19ed65fc9d9f8e19f4d644b05d37e3da28cb107a90eedb15c652c094a7f23f1 [2021-12-15 14:00:49,600 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 14:00:49,618 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 14:00:49,620 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 14:00:49,620 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 14:00:49,621 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 14:00:49,622 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety-ext/dll_extends_pointer.i [2021-12-15 14:00:49,692 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ecb1fb81/3676ac32e99e4eaf9149adf05d1b42b8/FLAG19d43fcb9 [2021-12-15 14:00:50,097 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 14:00:50,097 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety-ext/dll_extends_pointer.i [2021-12-15 14:00:50,108 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ecb1fb81/3676ac32e99e4eaf9149adf05d1b42b8/FLAG19d43fcb9 [2021-12-15 14:00:50,123 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ecb1fb81/3676ac32e99e4eaf9149adf05d1b42b8 [2021-12-15 14:00:50,125 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 14:00:50,126 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 14:00:50,129 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 14:00:50,129 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 14:00:50,131 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 14:00:50,131 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 02:00:50" (1/1) ... [2021-12-15 14:00:50,132 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@727dd3a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:00:50, skipping insertion in model container [2021-12-15 14:00:50,132 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 02:00:50" (1/1) ... [2021-12-15 14:00:50,141 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 14:00:50,177 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 14:00:50,485 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 14:00:50,493 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 14:00:50,547 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 14:00:50,566 INFO L208 MainTranslator]: Completed translation [2021-12-15 14:00:50,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:00:50 WrapperNode [2021-12-15 14:00:50,567 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 14:00:50,568 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 14:00:50,568 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 14:00:50,569 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 14:00:50,574 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:00:50" (1/1) ... [2021-12-15 14:00:50,597 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:00:50" (1/1) ... [2021-12-15 14:00:50,617 INFO L137 Inliner]: procedures = 123, calls = 21, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 63 [2021-12-15 14:00:50,618 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 14:00:50,619 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 14:00:50,619 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 14:00:50,619 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 14:00:50,624 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:00:50" (1/1) ... [2021-12-15 14:00:50,624 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:00:50" (1/1) ... [2021-12-15 14:00:50,633 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:00:50" (1/1) ... [2021-12-15 14:00:50,633 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:00:50" (1/1) ... [2021-12-15 14:00:50,642 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:00:50" (1/1) ... [2021-12-15 14:00:50,649 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:00:50" (1/1) ... [2021-12-15 14:00:50,650 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:00:50" (1/1) ... [2021-12-15 14:00:50,652 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 14:00:50,656 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 14:00:50,657 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 14:00:50,657 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 14:00:50,658 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:00:50" (1/1) ... [2021-12-15 14:00:50,663 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 14:00:50,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 14:00:50,681 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) [2021-12-15 14:00:50,702 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 [2021-12-15 14:00:50,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-15 14:00:50,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 14:00:50,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-15 14:00:50,732 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-15 14:00:50,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-15 14:00:50,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 14:00:50,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 14:00:50,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 14:00:50,824 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 14:00:50,834 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 14:00:51,085 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 14:00:51,090 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 14:00:51,096 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-15 14:00:51,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 02:00:51 BoogieIcfgContainer [2021-12-15 14:00:51,097 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 14:00:51,099 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 14:00:51,099 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 14:00:51,101 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 14:00:51,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 02:00:50" (1/3) ... [2021-12-15 14:00:51,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64261edc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 02:00:51, skipping insertion in model container [2021-12-15 14:00:51,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:00:50" (2/3) ... [2021-12-15 14:00:51,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64261edc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 02:00:51, skipping insertion in model container [2021-12-15 14:00:51,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 02:00:51" (3/3) ... [2021-12-15 14:00:51,103 INFO L111 eAbstractionObserver]: Analyzing ICFG dll_extends_pointer.i [2021-12-15 14:00:51,110 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 14:00:51,110 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 27 error locations. [2021-12-15 14:00:51,163 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 14:00:51,167 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 [2021-12-15 14:00:51,180 INFO L340 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2021-12-15 14:00:51,189 INFO L276 IsEmpty]: Start isEmpty. Operand has 59 states, 31 states have (on average 2.064516129032258) internal successors, (64), 58 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:00:51,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-12-15 14:00:51,199 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:00:51,200 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-12-15 14:00:51,200 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-12-15 14:00:51,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:00:51,207 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2021-12-15 14:00:51,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:00:51,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059486539] [2021-12-15 14:00:51,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:51,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:00:51,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:51,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:00:51,365 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:00:51,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059486539] [2021-12-15 14:00:51,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059486539] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:00:51,366 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:00:51,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 14:00:51,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255510241] [2021-12-15 14:00:51,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:00:51,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 14:00:51,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:00:51,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 14:00:51,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 14:00:51,392 INFO L87 Difference]: Start difference. First operand has 59 states, 31 states have (on average 2.064516129032258) internal successors, (64), 58 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:00:51,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:00:51,467 INFO L93 Difference]: Finished difference Result 63 states and 66 transitions. [2021-12-15 14:00:51,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 14:00:51,471 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 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 3 [2021-12-15 14:00:51,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:00:51,476 INFO L225 Difference]: With dead ends: 63 [2021-12-15 14:00:51,482 INFO L226 Difference]: Without dead ends: 59 [2021-12-15 14:00:51,485 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 [2021-12-15 14:00:51,488 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 40 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 14:00:51,489 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 33 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 14:00:51,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-12-15 14:00:51,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 53. [2021-12-15 14:00:51,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 33 states have (on average 1.7575757575757576) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:00:51,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 58 transitions. [2021-12-15 14:00:51,513 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 58 transitions. Word has length 3 [2021-12-15 14:00:51,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:00:51,514 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 58 transitions. [2021-12-15 14:00:51,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:00:51,514 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 58 transitions. [2021-12-15 14:00:51,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-12-15 14:00:51,515 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:00:51,515 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-12-15 14:00:51,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 14:00:51,515 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-12-15 14:00:51,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:00:51,516 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2021-12-15 14:00:51,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:00:51,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392827649] [2021-12-15 14:00:51,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:51,517 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:00:51,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:51,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:00:51,562 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:00:51,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392827649] [2021-12-15 14:00:51,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392827649] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:00:51,562 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:00:51,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 14:00:51,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306358812] [2021-12-15 14:00:51,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:00:51,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 14:00:51,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:00:51,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 14:00:51,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 14:00:51,566 INFO L87 Difference]: Start difference. First operand 53 states and 58 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:00:51,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:00:51,622 INFO L93 Difference]: Finished difference Result 55 states and 61 transitions. [2021-12-15 14:00:51,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 14:00:51,622 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 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 3 [2021-12-15 14:00:51,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:00:51,623 INFO L225 Difference]: With dead ends: 55 [2021-12-15 14:00:51,624 INFO L226 Difference]: Without dead ends: 55 [2021-12-15 14:00:51,624 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 [2021-12-15 14:00:51,627 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 17 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 14:00:51,628 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 51 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 14:00:51,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-12-15 14:00:51,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 48. [2021-12-15 14:00:51,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 33 states have (on average 1.606060606060606) internal successors, (53), 47 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:00:51,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 53 transitions. [2021-12-15 14:00:51,632 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 53 transitions. Word has length 3 [2021-12-15 14:00:51,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:00:51,632 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 53 transitions. [2021-12-15 14:00:51,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:00:51,632 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 53 transitions. [2021-12-15 14:00:51,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-15 14:00:51,633 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:00:51,633 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:00:51,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-15 14:00:51,633 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-12-15 14:00:51,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:00:51,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1115897518, now seen corresponding path program 1 times [2021-12-15 14:00:51,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:00:51,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37917363] [2021-12-15 14:00:51,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:51,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:00:51,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:51,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:00:51,690 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:00:51,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37917363] [2021-12-15 14:00:51,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37917363] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:00:51,691 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:00:51,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 14:00:51,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176462260] [2021-12-15 14:00:51,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:00:51,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 14:00:51,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:00:51,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 14:00:51,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 14:00:51,693 INFO L87 Difference]: Start difference. First operand 48 states and 53 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:00:51,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:00:51,771 INFO L93 Difference]: Finished difference Result 58 states and 61 transitions. [2021-12-15 14:00:51,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-15 14:00:51,772 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-12-15 14:00:51,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:00:51,773 INFO L225 Difference]: With dead ends: 58 [2021-12-15 14:00:51,773 INFO L226 Difference]: Without dead ends: 58 [2021-12-15 14:00:51,773 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 [2021-12-15 14:00:51,774 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 47 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 14:00:51,774 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 31 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 14:00:51,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-12-15 14:00:51,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 51. [2021-12-15 14:00:51,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 37 states have (on average 1.5945945945945945) internal successors, (59), 50 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:00:51,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 59 transitions. [2021-12-15 14:00:51,778 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 59 transitions. Word has length 10 [2021-12-15 14:00:51,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:00:51,778 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 59 transitions. [2021-12-15 14:00:51,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:00:51,779 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 59 transitions. [2021-12-15 14:00:51,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-15 14:00:51,779 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:00:51,779 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:00:51,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-15 14:00:51,780 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-12-15 14:00:51,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:00:51,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1115897519, now seen corresponding path program 1 times [2021-12-15 14:00:51,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:00:51,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077263176] [2021-12-15 14:00:51,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:51,781 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:00:51,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:51,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:00:51,829 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:00:51,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077263176] [2021-12-15 14:00:51,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077263176] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:00:51,830 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:00:51,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 14:00:51,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002628708] [2021-12-15 14:00:51,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:00:51,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 14:00:51,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:00:51,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 14:00:51,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 14:00:51,832 INFO L87 Difference]: Start difference. First operand 51 states and 59 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:00:51,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:00:51,898 INFO L93 Difference]: Finished difference Result 87 states and 99 transitions. [2021-12-15 14:00:51,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 14:00:51,899 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-12-15 14:00:51,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:00:51,900 INFO L225 Difference]: With dead ends: 87 [2021-12-15 14:00:51,900 INFO L226 Difference]: Without dead ends: 87 [2021-12-15 14:00:51,900 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 [2021-12-15 14:00:51,901 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 47 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 14:00:51,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 53 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 14:00:51,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-12-15 14:00:51,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 67. [2021-12-15 14:00:51,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 53 states have (on average 1.528301886792453) internal successors, (81), 66 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:00:51,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 81 transitions. [2021-12-15 14:00:51,905 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 81 transitions. Word has length 10 [2021-12-15 14:00:51,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:00:51,906 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 81 transitions. [2021-12-15 14:00:51,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:00:51,906 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 81 transitions. [2021-12-15 14:00:51,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-15 14:00:51,906 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:00:51,906 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:00:51,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-15 14:00:51,907 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-12-15 14:00:51,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:00:51,907 INFO L85 PathProgramCache]: Analyzing trace with hash 233083786, now seen corresponding path program 1 times [2021-12-15 14:00:51,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:00:51,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699477770] [2021-12-15 14:00:51,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:51,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:00:51,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:51,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:00:51,949 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:00:51,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699477770] [2021-12-15 14:00:51,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699477770] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:00:51,949 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:00:51,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-15 14:00:51,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712958803] [2021-12-15 14:00:51,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:00:51,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 14:00:51,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:00:51,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 14:00:51,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 14:00:51,951 INFO L87 Difference]: Start difference. First operand 67 states and 81 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:00:51,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:00:51,995 INFO L93 Difference]: Finished difference Result 90 states and 104 transitions. [2021-12-15 14:00:51,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 14:00:51,995 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-12-15 14:00:51,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:00:51,996 INFO L225 Difference]: With dead ends: 90 [2021-12-15 14:00:51,996 INFO L226 Difference]: Without dead ends: 90 [2021-12-15 14:00:51,996 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 [2021-12-15 14:00:51,997 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 50 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 14:00:51,997 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 58 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 14:00:51,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-12-15 14:00:52,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 67. [2021-12-15 14:00:52,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 53 states have (on average 1.490566037735849) internal successors, (79), 66 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:00:52,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 79 transitions. [2021-12-15 14:00:52,001 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 79 transitions. Word has length 11 [2021-12-15 14:00:52,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:00:52,001 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 79 transitions. [2021-12-15 14:00:52,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:00:52,001 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 79 transitions. [2021-12-15 14:00:52,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-15 14:00:52,002 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:00:52,002 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:00:52,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-15 14:00:52,002 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-12-15 14:00:52,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:00:52,003 INFO L85 PathProgramCache]: Analyzing trace with hash 683852015, now seen corresponding path program 1 times [2021-12-15 14:00:52,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:00:52,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91159689] [2021-12-15 14:00:52,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:52,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:00:52,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:52,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:00:52,065 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:00:52,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91159689] [2021-12-15 14:00:52,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91159689] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:00:52,065 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:00:52,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 14:00:52,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860940232] [2021-12-15 14:00:52,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:00:52,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 14:00:52,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:00:52,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 14:00:52,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-15 14:00:52,067 INFO L87 Difference]: Start difference. First operand 67 states and 79 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:00:52,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:00:52,097 INFO L93 Difference]: Finished difference Result 66 states and 78 transitions. [2021-12-15 14:00:52,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 14:00:52,098 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-12-15 14:00:52,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:00:52,098 INFO L225 Difference]: With dead ends: 66 [2021-12-15 14:00:52,099 INFO L226 Difference]: Without dead ends: 66 [2021-12-15 14:00:52,099 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-15 14:00:52,099 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 27 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 14:00:52,100 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 45 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 14:00:52,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-12-15 14:00:52,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2021-12-15 14:00:52,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 53 states have (on average 1.471698113207547) internal successors, (78), 65 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:00:52,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 78 transitions. [2021-12-15 14:00:52,103 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 78 transitions. Word has length 13 [2021-12-15 14:00:52,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:00:52,103 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 78 transitions. [2021-12-15 14:00:52,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:00:52,103 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 78 transitions. [2021-12-15 14:00:52,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-15 14:00:52,104 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:00:52,104 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:00:52,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-15 14:00:52,104 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-12-15 14:00:52,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:00:52,105 INFO L85 PathProgramCache]: Analyzing trace with hash -833158411, now seen corresponding path program 1 times [2021-12-15 14:00:52,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:00:52,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890419390] [2021-12-15 14:00:52,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:52,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:00:52,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:52,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:00:52,196 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:00:52,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890419390] [2021-12-15 14:00:52,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890419390] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:00:52,197 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:00:52,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-15 14:00:52,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450698489] [2021-12-15 14:00:52,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:00:52,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-15 14:00:52,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:00:52,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-15 14:00:52,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-15 14:00:52,199 INFO L87 Difference]: Start difference. First operand 66 states and 78 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:00:52,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:00:52,313 INFO L93 Difference]: Finished difference Result 73 states and 82 transitions. [2021-12-15 14:00:52,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-15 14:00:52,313 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2021-12-15 14:00:52,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:00:52,314 INFO L225 Difference]: With dead ends: 73 [2021-12-15 14:00:52,314 INFO L226 Difference]: Without dead ends: 73 [2021-12-15 14:00:52,314 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-12-15 14:00:52,315 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 53 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 14:00:52,315 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 84 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 14:00:52,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-12-15 14:00:52,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 61. [2021-12-15 14:00:52,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 48 states have (on average 1.4375) internal successors, (69), 60 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:00:52,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 69 transitions. [2021-12-15 14:00:52,318 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 69 transitions. Word has length 15 [2021-12-15 14:00:52,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:00:52,318 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 69 transitions. [2021-12-15 14:00:52,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:00:52,318 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 69 transitions. [2021-12-15 14:00:52,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-15 14:00:52,319 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:00:52,319 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:00:52,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-15 14:00:52,319 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-12-15 14:00:52,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:00:52,320 INFO L85 PathProgramCache]: Analyzing trace with hash -833147426, now seen corresponding path program 1 times [2021-12-15 14:00:52,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:00:52,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932416589] [2021-12-15 14:00:52,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:52,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:00:52,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:52,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:00:52,348 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:00:52,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932416589] [2021-12-15 14:00:52,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932416589] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:00:52,348 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:00:52,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 14:00:52,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132664621] [2021-12-15 14:00:52,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:00:52,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 14:00:52,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:00:52,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 14:00:52,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 14:00:52,350 INFO L87 Difference]: Start difference. First operand 61 states and 69 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:00:52,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:00:52,400 INFO L93 Difference]: Finished difference Result 77 states and 85 transitions. [2021-12-15 14:00:52,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 14:00:52,400 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2021-12-15 14:00:52,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:00:52,401 INFO L225 Difference]: With dead ends: 77 [2021-12-15 14:00:52,401 INFO L226 Difference]: Without dead ends: 77 [2021-12-15 14:00:52,401 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 [2021-12-15 14:00:52,402 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 41 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 14:00:52,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 60 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 14:00:52,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-12-15 14:00:52,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 70. [2021-12-15 14:00:52,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 57 states have (on average 1.4912280701754386) internal successors, (85), 69 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:00:52,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 85 transitions. [2021-12-15 14:00:52,405 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 85 transitions. Word has length 15 [2021-12-15 14:00:52,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:00:52,405 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 85 transitions. [2021-12-15 14:00:52,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:00:52,406 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 85 transitions. [2021-12-15 14:00:52,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-15 14:00:52,406 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:00:52,406 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:00:52,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-15 14:00:52,406 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-12-15 14:00:52,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:00:52,407 INFO L85 PathProgramCache]: Analyzing trace with hash 321145941, now seen corresponding path program 1 times [2021-12-15 14:00:52,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:00:52,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371743464] [2021-12-15 14:00:52,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:52,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:00:52,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:52,483 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:00:52,483 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:00:52,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371743464] [2021-12-15 14:00:52,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371743464] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 14:00:52,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1862276113] [2021-12-15 14:00:52,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:52,484 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 14:00:52,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 14:00:52,488 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) [2021-12-15 14:00:52,550 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-15 14:00:52,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:52,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 31 conjunts are in the unsatisfiable core [2021-12-15 14:00:52,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 14:00:52,682 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 [2021-12-15 14:00:52,704 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 [2021-12-15 14:00:52,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 14:00:52,754 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 [2021-12-15 14:00:52,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 14:00:52,773 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 [2021-12-15 14:00:52,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 14:00:52,795 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 [2021-12-15 14:00:52,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 14:00:52,799 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 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 [2021-12-15 14:00:52,883 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 14:00:52,883 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-15 14:00:52,893 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 14:00:52,895 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 14:00:52,895 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 15 treesize of output 10 [2021-12-15 14:00:52,939 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:00:52,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 14:00:53,277 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 21 treesize of output 19 [2021-12-15 14:00:53,281 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 19 treesize of output 17 [2021-12-15 14:00:53,285 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 23 treesize of output 21 [2021-12-15 14:00:53,295 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 22 treesize of output 20 [2021-12-15 14:00:53,328 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:00:53,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1862276113] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 14:00:53,328 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 14:00:53,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 12 [2021-12-15 14:00:53,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706274691] [2021-12-15 14:00:53,329 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 14:00:53,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-15 14:00:53,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:00:53,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-15 14:00:53,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-12-15 14:00:53,331 INFO L87 Difference]: Start difference. First operand 70 states and 85 transitions. Second operand has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:00:53,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:00:53,529 INFO L93 Difference]: Finished difference Result 85 states and 100 transitions. [2021-12-15 14:00:53,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-15 14:00:53,530 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-12-15 14:00:53,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:00:53,531 INFO L225 Difference]: With dead ends: 85 [2021-12-15 14:00:53,531 INFO L226 Difference]: Without dead ends: 85 [2021-12-15 14:00:53,531 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 31 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2021-12-15 14:00:53,532 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 97 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 27 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 14:00:53,532 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 203 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 150 Invalid, 0 Unknown, 27 Unchecked, 0.1s Time] [2021-12-15 14:00:53,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-12-15 14:00:53,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 81. [2021-12-15 14:00:53,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 68 states have (on average 1.4264705882352942) internal successors, (97), 80 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:00:53,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 97 transitions. [2021-12-15 14:00:53,534 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 97 transitions. Word has length 18 [2021-12-15 14:00:53,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:00:53,534 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 97 transitions. [2021-12-15 14:00:53,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:00:53,535 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 97 transitions. [2021-12-15 14:00:53,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-15 14:00:53,538 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:00:53,538 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:00:53,575 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-15 14:00:53,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 14:00:53,738 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-12-15 14:00:53,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:00:53,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1365588675, now seen corresponding path program 1 times [2021-12-15 14:00:53,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:00:53,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343417113] [2021-12-15 14:00:53,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:53,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:00:53,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:53,846 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:00:53,846 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:00:53,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343417113] [2021-12-15 14:00:53,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343417113] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 14:00:53,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560835412] [2021-12-15 14:00:53,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:53,846 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 14:00:53,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 14:00:53,848 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) [2021-12-15 14:00:53,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-15 14:00:53,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:53,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-15 14:00:53,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 14:00:54,005 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 5 [2021-12-15 14:00:54,026 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:00:54,026 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 14:00:54,082 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:00:54,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560835412] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 14:00:54,083 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 14:00:54,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2021-12-15 14:00:54,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099817030] [2021-12-15 14:00:54,083 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 14:00:54,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-15 14:00:54,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:00:54,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-15 14:00:54,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-15 14:00:54,084 INFO L87 Difference]: Start difference. First operand 81 states and 97 transitions. Second operand has 6 states, 5 states have (on average 4.6) 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) [2021-12-15 14:00:54,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:00:54,153 INFO L93 Difference]: Finished difference Result 83 states and 98 transitions. [2021-12-15 14:00:54,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-15 14:00:54,153 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.6) 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 19 [2021-12-15 14:00:54,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:00:54,154 INFO L225 Difference]: With dead ends: 83 [2021-12-15 14:00:54,154 INFO L226 Difference]: Without dead ends: 72 [2021-12-15 14:00:54,154 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 33 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-12-15 14:00:54,154 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 6 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 27 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 14:00:54,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 110 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 90 Invalid, 0 Unknown, 27 Unchecked, 0.1s Time] [2021-12-15 14:00:54,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-12-15 14:00:54,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2021-12-15 14:00:54,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 59 states have (on average 1.4745762711864407) internal successors, (87), 71 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:00:54,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 87 transitions. [2021-12-15 14:00:54,156 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 87 transitions. Word has length 19 [2021-12-15 14:00:54,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:00:54,157 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 87 transitions. [2021-12-15 14:00:54,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.6) 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) [2021-12-15 14:00:54,157 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 87 transitions. [2021-12-15 14:00:54,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-15 14:00:54,157 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:00:54,157 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:00:54,189 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-15 14:00:54,389 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,SelfDestructingSolverStorable9 [2021-12-15 14:00:54,390 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-12-15 14:00:54,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:00:54,390 INFO L85 PathProgramCache]: Analyzing trace with hash -190050214, now seen corresponding path program 1 times [2021-12-15 14:00:54,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:00:54,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060329445] [2021-12-15 14:00:54,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:54,391 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:00:54,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:54,433 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:00:54,433 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:00:54,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060329445] [2021-12-15 14:00:54,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060329445] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:00:54,433 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:00:54,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-15 14:00:54,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562058720] [2021-12-15 14:00:54,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:00:54,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-15 14:00:54,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:00:54,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-15 14:00:54,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-15 14:00:54,434 INFO L87 Difference]: Start difference. First operand 72 states and 87 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:00:54,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:00:54,485 INFO L93 Difference]: Finished difference Result 81 states and 88 transitions. [2021-12-15 14:00:54,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-15 14:00:54,486 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-12-15 14:00:54,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:00:54,486 INFO L225 Difference]: With dead ends: 81 [2021-12-15 14:00:54,486 INFO L226 Difference]: Without dead ends: 81 [2021-12-15 14:00:54,486 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-12-15 14:00:54,487 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 46 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 14:00:54,487 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 59 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 14:00:54,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-12-15 14:00:54,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 68. [2021-12-15 14:00:54,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 56 states have (on average 1.3928571428571428) internal successors, (78), 67 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:00:54,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 78 transitions. [2021-12-15 14:00:54,489 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 78 transitions. Word has length 19 [2021-12-15 14:00:54,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:00:54,489 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 78 transitions. [2021-12-15 14:00:54,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:00:54,489 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 78 transitions. [2021-12-15 14:00:54,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-15 14:00:54,489 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:00:54,489 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] [2021-12-15 14:00:54,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-15 14:00:54,490 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-12-15 14:00:54,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:00:54,490 INFO L85 PathProgramCache]: Analyzing trace with hash -36338646, now seen corresponding path program 1 times [2021-12-15 14:00:54,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:00:54,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202387729] [2021-12-15 14:00:54,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:54,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:00:54,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:54,565 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:00:54,566 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:00:54,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202387729] [2021-12-15 14:00:54,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202387729] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:00:54,566 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:00:54,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-15 14:00:54,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470985989] [2021-12-15 14:00:54,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:00:54,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-15 14:00:54,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:00:54,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-15 14:00:54,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-15 14:00:54,567 INFO L87 Difference]: Start difference. First operand 68 states and 78 transitions. Second operand has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:00:54,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:00:54,688 INFO L93 Difference]: Finished difference Result 87 states and 95 transitions. [2021-12-15 14:00:54,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-15 14:00:54,688 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2021-12-15 14:00:54,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:00:54,689 INFO L225 Difference]: With dead ends: 87 [2021-12-15 14:00:54,689 INFO L226 Difference]: Without dead ends: 87 [2021-12-15 14:00:54,689 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-12-15 14:00:54,689 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 51 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 14:00:54,689 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 161 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 14:00:54,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-12-15 14:00:54,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 68. [2021-12-15 14:00:54,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 56 states have (on average 1.375) internal successors, (77), 67 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:00:54,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 77 transitions. [2021-12-15 14:00:54,691 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 77 transitions. Word has length 24 [2021-12-15 14:00:54,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:00:54,691 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 77 transitions. [2021-12-15 14:00:54,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:00:54,692 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 77 transitions. [2021-12-15 14:00:54,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-15 14:00:54,692 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:00:54,692 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] [2021-12-15 14:00:54,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-15 14:00:54,692 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-12-15 14:00:54,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:00:54,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1126497925, now seen corresponding path program 1 times [2021-12-15 14:00:54,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:00:54,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581161017] [2021-12-15 14:00:54,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:54,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:00:54,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:54,758 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:00:54,758 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:00:54,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581161017] [2021-12-15 14:00:54,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581161017] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:00:54,758 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:00:54,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-15 14:00:54,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710054933] [2021-12-15 14:00:54,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:00:54,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-15 14:00:54,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:00:54,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-15 14:00:54,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-15 14:00:54,759 INFO L87 Difference]: Start difference. First operand 68 states and 77 transitions. Second operand has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:00:54,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:00:54,890 INFO L93 Difference]: Finished difference Result 86 states and 94 transitions. [2021-12-15 14:00:54,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-15 14:00:54,891 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-12-15 14:00:54,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:00:54,891 INFO L225 Difference]: With dead ends: 86 [2021-12-15 14:00:54,891 INFO L226 Difference]: Without dead ends: 86 [2021-12-15 14:00:54,892 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-12-15 14:00:54,892 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 49 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 14:00:54,892 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 131 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 14:00:54,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-12-15 14:00:54,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 68. [2021-12-15 14:00:54,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 56 states have (on average 1.3571428571428572) internal successors, (76), 67 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:00:54,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 76 transitions. [2021-12-15 14:00:54,894 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 76 transitions. Word has length 25 [2021-12-15 14:00:54,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:00:54,894 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 76 transitions. [2021-12-15 14:00:54,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:00:54,894 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 76 transitions. [2021-12-15 14:00:54,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-15 14:00:54,894 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:00:54,894 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] [2021-12-15 14:00:54,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-15 14:00:54,894 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-12-15 14:00:54,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:00:54,895 INFO L85 PathProgramCache]: Analyzing trace with hash -561697204, now seen corresponding path program 1 times [2021-12-15 14:00:54,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:00:54,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956913426] [2021-12-15 14:00:54,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:54,895 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:00:54,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:55,004 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:00:55,004 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:00:55,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956913426] [2021-12-15 14:00:55,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956913426] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:00:55,004 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:00:55,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-15 14:00:55,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993395089] [2021-12-15 14:00:55,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:00:55,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-15 14:00:55,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:00:55,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-15 14:00:55,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-15 14:00:55,005 INFO L87 Difference]: Start difference. First operand 68 states and 76 transitions. Second operand has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 7 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) [2021-12-15 14:00:55,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:00:55,092 INFO L93 Difference]: Finished difference Result 69 states and 76 transitions. [2021-12-15 14:00:55,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-15 14:00:55,093 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 7 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 [2021-12-15 14:00:55,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:00:55,093 INFO L225 Difference]: With dead ends: 69 [2021-12-15 14:00:55,093 INFO L226 Difference]: Without dead ends: 69 [2021-12-15 14:00:55,093 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2021-12-15 14:00:55,094 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 36 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 14:00:55,094 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 71 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 14:00:55,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-12-15 14:00:55,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2021-12-15 14:00:55,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 56 states have (on average 1.3392857142857142) internal successors, (75), 67 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:00:55,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 75 transitions. [2021-12-15 14:00:55,096 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 75 transitions. Word has length 26 [2021-12-15 14:00:55,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:00:55,096 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 75 transitions. [2021-12-15 14:00:55,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 7 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) [2021-12-15 14:00:55,096 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 75 transitions. [2021-12-15 14:00:55,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-15 14:00:55,096 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:00:55,096 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] [2021-12-15 14:00:55,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-15 14:00:55,096 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-12-15 14:00:55,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:00:55,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1337846250, now seen corresponding path program 1 times [2021-12-15 14:00:55,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:00:55,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523064911] [2021-12-15 14:00:55,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:55,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:00:55,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:55,225 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:00:55,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:00:55,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523064911] [2021-12-15 14:00:55,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523064911] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 14:00:55,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823708938] [2021-12-15 14:00:55,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:55,226 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 14:00:55,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 14:00:55,227 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) [2021-12-15 14:00:55,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-15 14:00:55,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:55,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 32 conjunts are in the unsatisfiable core [2021-12-15 14:00:55,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 14:00:55,342 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 [2021-12-15 14:00:55,363 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-15 14:00:55,363 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 [2021-12-15 14:00:55,380 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 [2021-12-15 14:00:55,410 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-15 14:00:55,410 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 [2021-12-15 14:00:55,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 14:00:55,459 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 31 treesize of output 26 [2021-12-15 14:00:55,526 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 14:00:55,527 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 14:00:55,527 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 25 treesize of output 16 [2021-12-15 14:00:55,554 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-12-15 14:00:55,559 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:00:55,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 14:00:55,756 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 14:00:55,756 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 31 treesize of output 35 [2021-12-15 14:00:55,826 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 14:00:55,826 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 38 treesize of output 31 [2021-12-15 14:00:55,831 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 14:00:55,832 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 55 treesize of output 51 [2021-12-15 14:00:55,835 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 38 treesize of output 36 [2021-12-15 14:00:55,838 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 36 treesize of output 34 [2021-12-15 14:00:55,910 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:00:55,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823708938] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 14:00:55,911 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 14:00:55,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 11] total 22 [2021-12-15 14:00:55,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260258581] [2021-12-15 14:00:55,911 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 14:00:55,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-12-15 14:00:55,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:00:55,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-12-15 14:00:55,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=440, Unknown=2, NotChecked=0, Total=506 [2021-12-15 14:00:55,912 INFO L87 Difference]: Start difference. First operand 68 states and 75 transitions. Second operand has 23 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 23 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:00:56,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:00:56,311 INFO L93 Difference]: Finished difference Result 95 states and 101 transitions. [2021-12-15 14:00:56,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-15 14:00:56,312 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 23 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-12-15 14:00:56,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:00:56,312 INFO L225 Difference]: With dead ends: 95 [2021-12-15 14:00:56,312 INFO L226 Difference]: Without dead ends: 95 [2021-12-15 14:00:56,313 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 36 SyntacticMatches, 6 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=244, Invalid=944, Unknown=2, NotChecked=0, Total=1190 [2021-12-15 14:00:56,313 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 205 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 88 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-15 14:00:56,313 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 132 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 317 Invalid, 0 Unknown, 88 Unchecked, 0.2s Time] [2021-12-15 14:00:56,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-12-15 14:00:56,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 73. [2021-12-15 14:00:56,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 61 states have (on average 1.360655737704918) internal successors, (83), 72 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:00:56,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 83 transitions. [2021-12-15 14:00:56,315 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 83 transitions. Word has length 26 [2021-12-15 14:00:56,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:00:56,315 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 83 transitions. [2021-12-15 14:00:56,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 23 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:00:56,315 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 83 transitions. [2021-12-15 14:00:56,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-15 14:00:56,315 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:00:56,315 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] [2021-12-15 14:00:56,351 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-15 14:00:56,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 14:00:56,519 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-12-15 14:00:56,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:00:56,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1337846251, now seen corresponding path program 1 times [2021-12-15 14:00:56,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:00:56,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436946154] [2021-12-15 14:00:56,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:56,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:00:56,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:56,650 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:00:56,650 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:00:56,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436946154] [2021-12-15 14:00:56,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436946154] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 14:00:56,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926029021] [2021-12-15 14:00:56,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:56,651 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 14:00:56,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 14:00:56,652 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) [2021-12-15 14:00:56,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-15 14:00:56,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:56,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 44 conjunts are in the unsatisfiable core [2021-12-15 14:00:56,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 14:00:56,797 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 [2021-12-15 14:00:56,845 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-15 14:00:56,845 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 [2021-12-15 14:00:56,873 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 [2021-12-15 14:00:56,878 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 [2021-12-15 14:00:56,908 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-15 14:00:56,908 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 [2021-12-15 14:00:56,916 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 [2021-12-15 14:00:56,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 14:00:56,962 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 31 treesize of output 26 [2021-12-15 14:00:56,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 14:00:56,967 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 [2021-12-15 14:00:57,033 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 14:00:57,034 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-15 14:00:57,036 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 14:00:57,038 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 14:00:57,038 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 25 treesize of output 16 [2021-12-15 14:00:57,098 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:00:57,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 14:00:57,419 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 14:00:57,419 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 40 treesize of output 44 [2021-12-15 14:00:57,541 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 14:00:57,541 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 57 treesize of output 50 [2021-12-15 14:00:57,545 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 14:00:57,545 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 50 treesize of output 50 [2021-12-15 14:00:57,552 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 14:00:57,552 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 76 treesize of output 72 [2021-12-15 14:00:57,558 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 14:00:57,558 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 84 treesize of output 84 [2021-12-15 14:00:57,562 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 59 treesize of output 57 [2021-12-15 14:00:57,565 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 55 [2021-12-15 14:00:57,568 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 55 treesize of output 53 [2021-12-15 14:00:57,806 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:00:57,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1926029021] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 14:00:57,807 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 14:00:57,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 26 [2021-12-15 14:00:57,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810191054] [2021-12-15 14:00:57,807 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 14:00:57,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-12-15 14:00:57,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:00:57,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-12-15 14:00:57,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=623, Unknown=1, NotChecked=0, Total=702 [2021-12-15 14:00:57,808 INFO L87 Difference]: Start difference. First operand 73 states and 83 transitions. Second operand has 27 states, 26 states have (on average 2.923076923076923) internal successors, (76), 27 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:00:58,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:00:58,496 INFO L93 Difference]: Finished difference Result 125 states and 139 transitions. [2021-12-15 14:00:58,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-15 14:00:58,497 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.923076923076923) internal successors, (76), 27 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-12-15 14:00:58,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:00:58,497 INFO L225 Difference]: With dead ends: 125 [2021-12-15 14:00:58,497 INFO L226 Difference]: Without dead ends: 125 [2021-12-15 14:00:58,498 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=208, Invalid=1273, Unknown=1, NotChecked=0, Total=1482 [2021-12-15 14:00:58,498 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 84 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 177 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-15 14:00:58,498 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 304 Invalid, 684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 462 Invalid, 0 Unknown, 177 Unchecked, 0.3s Time] [2021-12-15 14:00:58,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-12-15 14:00:58,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 100. [2021-12-15 14:00:58,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 88 states have (on average 1.3295454545454546) internal successors, (117), 99 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:00:58,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 117 transitions. [2021-12-15 14:00:58,500 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 117 transitions. Word has length 26 [2021-12-15 14:00:58,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:00:58,500 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 117 transitions. [2021-12-15 14:00:58,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 2.923076923076923) internal successors, (76), 27 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:00:58,500 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 117 transitions. [2021-12-15 14:00:58,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-15 14:00:58,502 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:00:58,502 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] [2021-12-15 14:00:58,539 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-15 14:00:58,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-12-15 14:00:58,719 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-12-15 14:00:58,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:00:58,720 INFO L85 PathProgramCache]: Analyzing trace with hash 94520065, now seen corresponding path program 1 times [2021-12-15 14:00:58,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:00:58,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246892928] [2021-12-15 14:00:58,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:58,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:00:58,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:58,875 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:00:58,875 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:00:58,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246892928] [2021-12-15 14:00:58,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246892928] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 14:00:58,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833151498] [2021-12-15 14:00:58,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:58,876 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 14:00:58,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 14:00:58,877 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) [2021-12-15 14:00:58,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-15 14:00:58,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:58,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 23 conjunts are in the unsatisfiable core [2021-12-15 14:00:58,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 14:00:58,988 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 [2021-12-15 14:00:59,014 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-15 14:00:59,014 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 [2021-12-15 14:00:59,030 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 [2021-12-15 14:00:59,068 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 14:00:59,069 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 18 treesize of output 18 [2021-12-15 14:00:59,107 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:00:59,108 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 14:00:59,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1833151498] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:00:59,108 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-15 14:00:59,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 18 [2021-12-15 14:00:59,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306871472] [2021-12-15 14:00:59,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:00:59,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-15 14:00:59,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:00:59,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-15 14:00:59,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2021-12-15 14:00:59,109 INFO L87 Difference]: Start difference. First operand 100 states and 117 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) [2021-12-15 14:00:59,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:00:59,273 INFO L93 Difference]: Finished difference Result 109 states and 125 transitions. [2021-12-15 14:00:59,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-15 14:00:59,273 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 [2021-12-15 14:00:59,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:00:59,274 INFO L225 Difference]: With dead ends: 109 [2021-12-15 14:00:59,274 INFO L226 Difference]: Without dead ends: 108 [2021-12-15 14:00:59,274 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=569, Unknown=0, NotChecked=0, Total=650 [2021-12-15 14:00:59,275 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 28 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 14:00:59,275 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 172 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 14:00:59,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-12-15 14:00:59,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 100. [2021-12-15 14:00:59,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 88 states have (on average 1.3181818181818181) internal successors, (116), 99 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:00:59,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 116 transitions. [2021-12-15 14:00:59,277 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 116 transitions. Word has length 27 [2021-12-15 14:00:59,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:00:59,277 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 116 transitions. [2021-12-15 14:00:59,277 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) [2021-12-15 14:00:59,277 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 116 transitions. [2021-12-15 14:00:59,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-15 14:00:59,277 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:00:59,277 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] [2021-12-15 14:00:59,297 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-15 14:00:59,483 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,SelfDestructingSolverStorable16 [2021-12-15 14:00:59,483 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-12-15 14:00:59,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:00:59,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1476440114, now seen corresponding path program 1 times [2021-12-15 14:00:59,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:00:59,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181855964] [2021-12-15 14:00:59,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:59,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:00:59,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:59,589 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:00:59,589 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:00:59,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181855964] [2021-12-15 14:00:59,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181855964] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 14:00:59,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657116548] [2021-12-15 14:00:59,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:59,590 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 14:00:59,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 14:00:59,591 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) [2021-12-15 14:00:59,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-15 14:00:59,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:59,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 27 conjunts are in the unsatisfiable core [2021-12-15 14:00:59,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 14:00:59,692 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-15 14:00:59,744 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-15 14:00:59,744 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 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-15 14:00:59,766 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-15 14:00:59,790 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-15 14:00:59,791 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 27 treesize of output 28 [2021-12-15 14:00:59,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 14:00:59,851 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 25 [2021-12-15 14:00:59,909 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 14:00:59,911 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 14:00:59,911 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 24 treesize of output 15 [2021-12-15 14:00:59,925 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:00:59,926 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 14:01:00,497 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_766 (Array Int Int)) (|v_ULTIMATE.start_main_~list~0#1.offset_28| Int) (v_ArrVal_768 Int)) (or (< |v_ULTIMATE.start_main_~list~0#1.offset_28| 0) (< |c_ULTIMATE.start_main_~y~0#1.offset| |v_ULTIMATE.start_main_~list~0#1.offset_28|) (not (= 0 (select (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~list~0#1.base| v_ArrVal_766) |c_ULTIMATE.start_main_~y~0#1.base|) (+ |c_ULTIMATE.start_main_~y~0#1.offset| 8) v_ArrVal_768) |v_ULTIMATE.start_main_~list~0#1.offset_28|))))) is different from false [2021-12-15 14:01:00,506 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 14:01:00,507 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 24 treesize of output 25 [2021-12-15 14:01:00,509 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 43 treesize of output 39 [2021-12-15 14:01:00,511 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 14:01:00,516 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 14:01:00,517 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 34 treesize of output 38 [2021-12-15 14:01:00,519 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 14:01:00,521 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 20 treesize of output 18 [2021-12-15 14:01:00,660 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:01:00,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [657116548] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 14:01:00,661 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 14:01:00,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 11] total 22 [2021-12-15 14:01:00,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392712340] [2021-12-15 14:01:00,661 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 14:01:00,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-12-15 14:01:00,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:01:00,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-12-15 14:01:00,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=357, Unknown=2, NotChecked=38, Total=462 [2021-12-15 14:01:00,662 INFO L87 Difference]: Start difference. First operand 100 states and 116 transitions. Second operand has 22 states, 22 states have (on average 2.590909090909091) internal successors, (57), 22 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:01:01,021 WARN L838 $PredicateComparison]: unable to prove that (and (= 1 (select |c_#valid| |c_ULTIMATE.start_main_~y~0#1.base|)) (not (= |c_ULTIMATE.start_main_~list~0#1.base| |c_ULTIMATE.start_main_~y~0#1.base|)) (forall ((v_ArrVal_766 (Array Int Int)) (|v_ULTIMATE.start_main_~list~0#1.offset_28| Int) (v_ArrVal_768 Int)) (or (< |v_ULTIMATE.start_main_~list~0#1.offset_28| 0) (< |c_ULTIMATE.start_main_~y~0#1.offset| |v_ULTIMATE.start_main_~list~0#1.offset_28|) (not (= 0 (select (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~list~0#1.base| v_ArrVal_766) |c_ULTIMATE.start_main_~y~0#1.base|) (+ |c_ULTIMATE.start_main_~y~0#1.offset| 8) v_ArrVal_768) |v_ULTIMATE.start_main_~list~0#1.offset_28|))))) (not (= 0 |c_ULTIMATE.start_main_~y~0#1.base|)) (= |c_ULTIMATE.start_main_~y~0#1.offset| 0) (not (= 0 |c_ULTIMATE.start_main_~list~0#1.base|)) (= (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~y~0#1.base|) |c_ULTIMATE.start_main_~y~0#1.offset|) |c_ULTIMATE.start_main_~list~0#1.base|)) is different from false [2021-12-15 14:01:01,699 WARN L838 $PredicateComparison]: unable to prove that (and (= 1 (select |c_#valid| |c_ULTIMATE.start_main_~y~0#1.base|)) (not (= |c_ULTIMATE.start_main_~list~0#1.base| |c_ULTIMATE.start_main_~y~0#1.base|)) (not (= 0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|))) (forall ((v_ArrVal_766 (Array Int Int)) (|v_ULTIMATE.start_main_~list~0#1.offset_28| Int) (v_ArrVal_768 Int)) (or (< |v_ULTIMATE.start_main_~list~0#1.offset_28| 0) (< |c_ULTIMATE.start_main_~y~0#1.offset| |v_ULTIMATE.start_main_~list~0#1.offset_28|) (not (= 0 (select (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~list~0#1.base| v_ArrVal_766) |c_ULTIMATE.start_main_~y~0#1.base|) (+ |c_ULTIMATE.start_main_~y~0#1.offset| 8) v_ArrVal_768) |v_ULTIMATE.start_main_~list~0#1.offset_28|))))) (not (= 0 |c_ULTIMATE.start_main_~y~0#1.base|)) (= |c_ULTIMATE.start_main_~y~0#1.offset| 0) (not (= 0 |c_ULTIMATE.start_main_~list~0#1.base|)) (= (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~y~0#1.base|) |c_ULTIMATE.start_main_~y~0#1.offset|) |c_ULTIMATE.start_main_~list~0#1.base|)) is different from false [2021-12-15 14:01:01,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:01:01,764 INFO L93 Difference]: Finished difference Result 207 states and 233 transitions. [2021-12-15 14:01:01,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-12-15 14:01:01,765 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.590909090909091) internal successors, (57), 22 states have internal predecessors, (57), 0 states have call successors, (0), 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 [2021-12-15 14:01:01,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:01:01,765 INFO L225 Difference]: With dead ends: 207 [2021-12-15 14:01:01,765 INFO L226 Difference]: Without dead ends: 207 [2021-12-15 14:01:01,766 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=250, Invalid=1240, Unknown=4, NotChecked=228, Total=1722 [2021-12-15 14:01:01,767 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 134 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 318 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-15 14:01:01,767 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [134 Valid, 352 Invalid, 971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 588 Invalid, 0 Unknown, 318 Unchecked, 0.2s Time] [2021-12-15 14:01:01,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-12-15 14:01:01,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 148. [2021-12-15 14:01:01,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 136 states have (on average 1.25) internal successors, (170), 147 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:01:01,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 170 transitions. [2021-12-15 14:01:01,769 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 170 transitions. Word has length 27 [2021-12-15 14:01:01,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:01:01,769 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 170 transitions. [2021-12-15 14:01:01,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.590909090909091) internal successors, (57), 22 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:01:01,770 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 170 transitions. [2021-12-15 14:01:01,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-15 14:01:01,770 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:01:01,770 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] [2021-12-15 14:01:01,787 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-15 14:01:01,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-12-15 14:01:01,983 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-12-15 14:01:01,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:01:01,984 INFO L85 PathProgramCache]: Analyzing trace with hash -328711838, now seen corresponding path program 1 times [2021-12-15 14:01:01,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:01:01,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549098134] [2021-12-15 14:01:01,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:01:01,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:01:02,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:01:02,079 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:01:02,079 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:01:02,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549098134] [2021-12-15 14:01:02,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549098134] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:01:02,079 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:01:02,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-15 14:01:02,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046505557] [2021-12-15 14:01:02,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:01:02,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-15 14:01:02,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:01:02,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-15 14:01:02,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-12-15 14:01:02,081 INFO L87 Difference]: Start difference. First operand 148 states and 170 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) [2021-12-15 14:01:02,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:01:02,232 INFO L93 Difference]: Finished difference Result 167 states and 188 transitions. [2021-12-15 14:01:02,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-15 14:01:02,232 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 [2021-12-15 14:01:02,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:01:02,233 INFO L225 Difference]: With dead ends: 167 [2021-12-15 14:01:02,233 INFO L226 Difference]: Without dead ends: 167 [2021-12-15 14:01:02,233 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2021-12-15 14:01:02,233 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 70 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 14:01:02,234 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 94 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 14:01:02,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-12-15 14:01:02,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 148. [2021-12-15 14:01:02,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 136 states have (on average 1.2426470588235294) internal successors, (169), 147 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:01:02,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 169 transitions. [2021-12-15 14:01:02,236 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 169 transitions. Word has length 29 [2021-12-15 14:01:02,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:01:02,236 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 169 transitions. [2021-12-15 14:01:02,236 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) [2021-12-15 14:01:02,236 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 169 transitions. [2021-12-15 14:01:02,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-15 14:01:02,236 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:01:02,236 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] [2021-12-15 14:01:02,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-15 14:01:02,237 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-12-15 14:01:02,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:01:02,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1935506277, now seen corresponding path program 1 times [2021-12-15 14:01:02,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:01:02,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288343615] [2021-12-15 14:01:02,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:01:02,238 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:01:02,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:01:02,507 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:01:02,507 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:01:02,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288343615] [2021-12-15 14:01:02,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288343615] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 14:01:02,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851386812] [2021-12-15 14:01:02,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:01:02,507 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 14:01:02,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 14:01:02,508 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) [2021-12-15 14:01:02,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-15 14:01:02,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:01:02,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 44 conjunts are in the unsatisfiable core [2021-12-15 14:01:02,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 14:01:02,597 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 [2021-12-15 14:01:02,626 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-15 14:01:02,627 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 [2021-12-15 14:01:02,637 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 [2021-12-15 14:01:02,652 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-15 14:01:02,652 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 [2021-12-15 14:01:02,686 INFO L354 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2021-12-15 14:01:02,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2021-12-15 14:01:02,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 14:01:02,700 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 39 treesize of output 30 [2021-12-15 14:01:02,875 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 14:01:02,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 14:01:02,889 INFO L354 Elim1Store]: treesize reduction 12, result has 64.7 percent of original size [2021-12-15 14:01:02,889 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 46 treesize of output 41 [2021-12-15 14:01:02,959 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-15 14:01:02,959 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2021-12-15 14:01:03,008 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-12-15 14:01:03,013 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:01:03,013 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 14:01:20,179 INFO L354 Elim1Store]: treesize reduction 5, result has 89.8 percent of original size [2021-12-15 14:01:20,180 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 206 treesize of output 231 [2021-12-15 14:01:20,467 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_#t~malloc8#1.base_11| Int) (|v_ULTIMATE.start_main_~list~0#1.offset_32| Int)) (or (= |c_ULTIMATE.start_main_~list~0#1.base| |v_ULTIMATE.start_main_#t~malloc8#1.base_11|) (< |c_ULTIMATE.start_main_~y~0#1.offset| |v_ULTIMATE.start_main_~list~0#1.offset_32|) (and (forall ((v_ArrVal_904 (Array Int Int))) (not (= |c_ULTIMATE.start_main_~y~0#1.base| (select (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~list~0#1.base| v_ArrVal_904) |c_ULTIMATE.start_main_~y~0#1.base|) (+ |c_ULTIMATE.start_main_~y~0#1.offset| 8) |v_ULTIMATE.start_main_#t~malloc8#1.base_11|) |v_ULTIMATE.start_main_~list~0#1.offset_32|)))) (forall ((v_ArrVal_904 (Array Int Int))) (= |c_ULTIMATE.start_main_~list~0#1.base| (select (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~list~0#1.base| v_ArrVal_904) |c_ULTIMATE.start_main_~y~0#1.base|) (+ |c_ULTIMATE.start_main_~y~0#1.offset| 8) |v_ULTIMATE.start_main_#t~malloc8#1.base_11|) |v_ULTIMATE.start_main_~list~0#1.offset_32|))) (forall ((v_ArrVal_904 (Array Int Int))) (not (let ((.cse0 (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~list~0#1.base| v_ArrVal_904) |c_ULTIMATE.start_main_~y~0#1.base|) (+ |c_ULTIMATE.start_main_~y~0#1.offset| 8) |v_ULTIMATE.start_main_#t~malloc8#1.base_11|))) (= (select .cse0 |v_ULTIMATE.start_main_~list~0#1.offset_32|) (select .cse0 8)))))) (< |v_ULTIMATE.start_main_~list~0#1.offset_32| 0))) is different from false [2021-12-15 14:01:20,481 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 14:01:20,481 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 92 treesize of output 69 [2021-12-15 14:01:20,484 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 124 treesize of output 114 [2021-12-15 14:01:20,486 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 14:01:20,498 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 14:01:20,499 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 114 treesize of output 126 [2021-12-15 14:01:20,503 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 14:01:20,504 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 92 treesize of output 90 [2021-12-15 14:01:20,512 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 14:01:20,514 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 85 treesize of output 83 [2021-12-15 14:01:20,517 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 14:01:20,522 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 14:01:20,523 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 93 treesize of output 96 [2021-12-15 14:01:20,652 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:01:20,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851386812] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 14:01:20,653 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 14:01:20,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 17] total 37 [2021-12-15 14:01:20,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320120242] [2021-12-15 14:01:20,653 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 14:01:20,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-12-15 14:01:20,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:01:20,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-12-15 14:01:20,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=1166, Unknown=9, NotChecked=70, Total=1406 [2021-12-15 14:01:20,655 INFO L87 Difference]: Start difference. First operand 148 states and 169 transitions. Second operand has 38 states, 37 states have (on average 2.027027027027027) internal successors, (75), 38 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:01:21,135 WARN L838 $PredicateComparison]: unable to prove that (and (= 1 (select |c_#valid| |c_ULTIMATE.start_main_~y~0#1.base|)) (not (= |c_ULTIMATE.start_main_~list~0#1.base| |c_ULTIMATE.start_main_~y~0#1.base|)) (= |c_ULTIMATE.start_main_~y~0#1.offset| 0) (= (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~y~0#1.base|) |c_ULTIMATE.start_main_~y~0#1.offset|) |c_ULTIMATE.start_main_~list~0#1.base|) (forall ((|v_ULTIMATE.start_main_#t~malloc8#1.base_11| Int) (|v_ULTIMATE.start_main_~list~0#1.offset_32| Int)) (or (= |c_ULTIMATE.start_main_~list~0#1.base| |v_ULTIMATE.start_main_#t~malloc8#1.base_11|) (< |c_ULTIMATE.start_main_~y~0#1.offset| |v_ULTIMATE.start_main_~list~0#1.offset_32|) (and (forall ((v_ArrVal_904 (Array Int Int))) (not (= |c_ULTIMATE.start_main_~y~0#1.base| (select (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~list~0#1.base| v_ArrVal_904) |c_ULTIMATE.start_main_~y~0#1.base|) (+ |c_ULTIMATE.start_main_~y~0#1.offset| 8) |v_ULTIMATE.start_main_#t~malloc8#1.base_11|) |v_ULTIMATE.start_main_~list~0#1.offset_32|)))) (forall ((v_ArrVal_904 (Array Int Int))) (= |c_ULTIMATE.start_main_~list~0#1.base| (select (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~list~0#1.base| v_ArrVal_904) |c_ULTIMATE.start_main_~y~0#1.base|) (+ |c_ULTIMATE.start_main_~y~0#1.offset| 8) |v_ULTIMATE.start_main_#t~malloc8#1.base_11|) |v_ULTIMATE.start_main_~list~0#1.offset_32|))) (forall ((v_ArrVal_904 (Array Int Int))) (not (let ((.cse0 (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~list~0#1.base| v_ArrVal_904) |c_ULTIMATE.start_main_~y~0#1.base|) (+ |c_ULTIMATE.start_main_~y~0#1.offset| 8) |v_ULTIMATE.start_main_#t~malloc8#1.base_11|))) (= (select .cse0 |v_ULTIMATE.start_main_~list~0#1.offset_32|) (select .cse0 8)))))) (< |v_ULTIMATE.start_main_~list~0#1.offset_32| 0)))) is different from false [2021-12-15 14:01:21,755 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~list~0#1.base|))) (let ((.cse0 (select .cse1 |c_ULTIMATE.start_main_~list~0#1.offset|))) (and (= 1 (select |c_#valid| |c_ULTIMATE.start_main_~y~0#1.base|)) (not (= |c_ULTIMATE.start_main_~list~0#1.base| |c_ULTIMATE.start_main_~y~0#1.base|)) (= |c_ULTIMATE.start_main_~list~0#1.offset| 0) (not (= .cse0 |c_ULTIMATE.start_main_~list~0#1.base|)) (not (= .cse0 (select .cse1 8))) (= |c_ULTIMATE.start_main_~y~0#1.offset| 0) (= (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~y~0#1.base|) |c_ULTIMATE.start_main_~y~0#1.offset|) |c_ULTIMATE.start_main_~list~0#1.base|) (forall ((|v_ULTIMATE.start_main_#t~malloc8#1.base_11| Int) (|v_ULTIMATE.start_main_~list~0#1.offset_32| Int)) (or (= |c_ULTIMATE.start_main_~list~0#1.base| |v_ULTIMATE.start_main_#t~malloc8#1.base_11|) (< |c_ULTIMATE.start_main_~y~0#1.offset| |v_ULTIMATE.start_main_~list~0#1.offset_32|) (and (forall ((v_ArrVal_904 (Array Int Int))) (not (= |c_ULTIMATE.start_main_~y~0#1.base| (select (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~list~0#1.base| v_ArrVal_904) |c_ULTIMATE.start_main_~y~0#1.base|) (+ |c_ULTIMATE.start_main_~y~0#1.offset| 8) |v_ULTIMATE.start_main_#t~malloc8#1.base_11|) |v_ULTIMATE.start_main_~list~0#1.offset_32|)))) (forall ((v_ArrVal_904 (Array Int Int))) (= |c_ULTIMATE.start_main_~list~0#1.base| (select (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~list~0#1.base| v_ArrVal_904) |c_ULTIMATE.start_main_~y~0#1.base|) (+ |c_ULTIMATE.start_main_~y~0#1.offset| 8) |v_ULTIMATE.start_main_#t~malloc8#1.base_11|) |v_ULTIMATE.start_main_~list~0#1.offset_32|))) (forall ((v_ArrVal_904 (Array Int Int))) (not (let ((.cse2 (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~list~0#1.base| v_ArrVal_904) |c_ULTIMATE.start_main_~y~0#1.base|) (+ |c_ULTIMATE.start_main_~y~0#1.offset| 8) |v_ULTIMATE.start_main_#t~malloc8#1.base_11|))) (= (select .cse2 |v_ULTIMATE.start_main_~list~0#1.offset_32|) (select .cse2 8)))))) (< |v_ULTIMATE.start_main_~list~0#1.offset_32| 0))) (= (select |c_#valid| .cse0) 1)))) is different from false [2021-12-15 14:01:21,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:01:21,989 INFO L93 Difference]: Finished difference Result 203 states and 226 transitions. [2021-12-15 14:01:21,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-15 14:01:21,989 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 2.027027027027027) internal successors, (75), 38 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-12-15 14:01:21,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:01:21,991 INFO L225 Difference]: With dead ends: 203 [2021-12-15 14:01:21,995 INFO L226 Difference]: Without dead ends: 203 [2021-12-15 14:01:21,996 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 37 SyntacticMatches, 9 SemanticMatches, 49 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 815 ImplicationChecksByTransitivity, 18.2s TimeCoverageRelationStatistics Valid=320, Invalid=1937, Unknown=11, NotChecked=282, Total=2550 [2021-12-15 14:01:21,996 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 96 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 453 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 14:01:21,997 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 320 Invalid, 781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 290 Invalid, 0 Unknown, 453 Unchecked, 0.1s Time] [2021-12-15 14:01:21,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2021-12-15 14:01:22,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 193. [2021-12-15 14:01:22,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 181 states have (on average 1.2154696132596685) internal successors, (220), 192 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) [2021-12-15 14:01:22,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 220 transitions. [2021-12-15 14:01:22,000 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 220 transitions. Word has length 31 [2021-12-15 14:01:22,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:01:22,001 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 220 transitions. [2021-12-15 14:01:22,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 2.027027027027027) internal successors, (75), 38 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:01:22,001 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 220 transitions. [2021-12-15 14:01:22,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-15 14:01:22,001 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:01:22,002 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] [2021-12-15 14:01:22,035 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-15 14:01:22,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 14:01:22,221 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-12-15 14:01:22,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:01:22,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1935506278, now seen corresponding path program 1 times [2021-12-15 14:01:22,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:01:22,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870397863] [2021-12-15 14:01:22,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:01:22,222 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:01:22,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:01:22,351 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:01:22,352 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:01:22,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870397863] [2021-12-15 14:01:22,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870397863] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 14:01:22,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863900332] [2021-12-15 14:01:22,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:01:22,352 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 14:01:22,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 14:01:22,353 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) [2021-12-15 14:01:22,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-15 14:01:22,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:01:22,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 50 conjunts are in the unsatisfiable core [2021-12-15 14:01:22,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 14:01:22,467 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 [2021-12-15 14:01:22,471 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 [2021-12-15 14:01:22,510 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-15 14:01:22,511 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 18 [2021-12-15 14:01:22,522 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-15 14:01:22,522 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 [2021-12-15 14:01:22,549 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 [2021-12-15 14:01:22,552 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 [2021-12-15 14:01:22,584 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-15 14:01:22,584 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 47 treesize of output 44 [2021-12-15 14:01:22,588 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 [2021-12-15 14:01:22,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 14:01:22,627 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-15 14:01:22,632 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-12-15 14:01:22,632 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 1 case distinctions, treesize of input 15 treesize of output 15 [2021-12-15 14:01:22,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 14:01:22,658 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 31 treesize of output 26 [2021-12-15 14:01:22,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 14:01:22,665 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 [2021-12-15 14:01:22,722 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 14:01:22,723 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-15 14:01:22,725 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 14:01:22,727 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 14:01:22,727 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 25 treesize of output 16 [2021-12-15 14:01:22,764 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:01:22,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 14:01:23,207 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-15 14:01:23,208 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 13 treesize of output 12 [2021-12-15 14:01:23,373 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 14:01:23,373 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 59 treesize of output 60 [2021-12-15 14:01:23,380 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 14:01:23,381 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 94 treesize of output 94 [2021-12-15 14:01:23,386 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 14:01:23,386 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 94 treesize of output 78 [2021-12-15 14:01:23,395 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 14:01:23,396 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 130 treesize of output 122 [2021-12-15 14:01:23,400 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 97 treesize of output 93 [2021-12-15 14:01:23,403 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 93 treesize of output 89 [2021-12-15 14:01:23,407 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 89 treesize of output 87 [2021-12-15 14:01:24,110 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:01:24,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1863900332] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 14:01:24,110 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 14:01:24,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 25 [2021-12-15 14:01:24,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100035414] [2021-12-15 14:01:24,111 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 14:01:24,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-15 14:01:24,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:01:24,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-15 14:01:24,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=562, Unknown=10, NotChecked=0, Total=650 [2021-12-15 14:01:24,113 INFO L87 Difference]: Start difference. First operand 193 states and 220 transitions. Second operand has 26 states, 25 states have (on average 3.0) internal successors, (75), 26 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:01:24,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:01:24,630 INFO L93 Difference]: Finished difference Result 224 states and 249 transitions. [2021-12-15 14:01:24,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-15 14:01:24,632 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 3.0) internal successors, (75), 26 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-12-15 14:01:24,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:01:24,633 INFO L225 Difference]: With dead ends: 224 [2021-12-15 14:01:24,633 INFO L226 Difference]: Without dead ends: 224 [2021-12-15 14:01:24,633 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 51 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=307, Invalid=1165, Unknown=10, NotChecked=0, Total=1482 [2021-12-15 14:01:24,633 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 143 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 256 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-15 14:01:24,634 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 203 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 356 Invalid, 0 Unknown, 256 Unchecked, 0.2s Time] [2021-12-15 14:01:24,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2021-12-15 14:01:24,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 178. [2021-12-15 14:01:24,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 166 states have (on average 1.2228915662650603) internal successors, (203), 177 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:01:24,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 203 transitions. [2021-12-15 14:01:24,638 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 203 transitions. Word has length 31 [2021-12-15 14:01:24,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:01:24,638 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 203 transitions. [2021-12-15 14:01:24,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 3.0) internal successors, (75), 26 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:01:24,638 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 203 transitions. [2021-12-15 14:01:24,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-15 14:01:24,639 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:01:24,639 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-15 14:01:24,656 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-15 14:01:24,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-12-15 14:01:24,847 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-12-15 14:01:24,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:01:24,848 INFO L85 PathProgramCache]: Analyzing trace with hash 678559033, now seen corresponding path program 1 times [2021-12-15 14:01:24,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:01:24,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051809021] [2021-12-15 14:01:24,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:01:24,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:01:24,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:01:25,103 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:01:25,103 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:01:25,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051809021] [2021-12-15 14:01:25,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051809021] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 14:01:25,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898193347] [2021-12-15 14:01:25,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:01:25,104 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 14:01:25,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 14:01:25,105 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 14:01:25,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-15 14:01:25,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:01:25,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 56 conjunts are in the unsatisfiable core [2021-12-15 14:01:25,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 14:01:25,204 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 [2021-12-15 14:01:25,215 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 13 treesize of output 9 [2021-12-15 14:01:25,217 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 15 treesize of output 11 [2021-12-15 14:01:25,292 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-15 14:01:25,292 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 11 treesize of output 11 [2021-12-15 14:01:25,339 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 [2021-12-15 14:01:25,343 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 [2021-12-15 14:01:25,390 INFO L354 Elim1Store]: treesize reduction 100, result has 17.4 percent of original size [2021-12-15 14:01:25,390 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 103 treesize of output 80 [2021-12-15 14:01:25,399 INFO L354 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2021-12-15 14:01:25,399 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 62 [2021-12-15 14:01:25,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 14:01:25,440 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 55 [2021-12-15 14:01:25,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 14:01:25,448 INFO L354 Elim1Store]: treesize reduction 65, result has 16.7 percent of original size [2021-12-15 14:01:25,448 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 66 treesize of output 59 [2021-12-15 14:01:25,911 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 14:01:25,913 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 14:01:25,918 INFO L354 Elim1Store]: treesize reduction 38, result has 7.3 percent of original size [2021-12-15 14:01:25,918 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 69 treesize of output 39 [2021-12-15 14:01:25,921 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 14:01:25,925 INFO L354 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2021-12-15 14:01:25,925 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 4 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 20 [2021-12-15 14:01:25,950 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:01:25,951 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 14:01:41,719 INFO L354 Elim1Store]: treesize reduction 2014, result has 23.8 percent of original size [2021-12-15 14:01:41,720 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 214669 treesize of output 108879 [2021-12-15 14:01:42,503 INFO L354 Elim1Store]: treesize reduction 462, result has 31.6 percent of original size [2021-12-15 14:01:42,504 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 178945 treesize of output 44910 [2021-12-15 14:01:42,607 INFO L354 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2021-12-15 14:01:42,608 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44910 treesize of output 43882 [2021-12-15 14:01:42,722 INFO L354 Elim1Store]: treesize reduction 17, result has 51.4 percent of original size [2021-12-15 14:01:42,723 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43882 treesize of output 41830 [2021-12-15 14:01:42,846 INFO L354 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2021-12-15 14:01:42,847 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41830 treesize of output 38956 [2021-12-15 14:01:42,928 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Should have been eliminated by DER [2021-12-15 14:01:42,928 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-15 14:01:42,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-12-15 14:01:42,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536940586] [2021-12-15 14:01:42,928 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-15 14:01:42,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-15 14:01:42,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:01:42,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-15 14:01:42,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1134, Unknown=7, NotChecked=0, Total=1260 [2021-12-15 14:01:42,929 INFO L87 Difference]: Start difference. First operand 178 states and 203 transitions. Second operand has 15 states, 15 states have (on average 2.066666666666667) internal successors, (31), 15 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) [2021-12-15 14:01:42,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-15 14:01:42,930 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 394 ImplicationChecksByTransitivity, 14.9s TimeCoverageRelationStatistics Valid=119, Invalid=1134, Unknown=7, NotChecked=0, Total=1260 [2021-12-15 14:01:42,930 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 1 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 [2021-12-15 14:01:42,930 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 3 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 14:01:42,947 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-15 14:01:43,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 14:01:43,144 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@5c73f651 at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.assertCodeBlock(IncrementalHoareTripleChecker.java:360) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.prepareAssertionStackAndAddTransition(IncrementalHoareTripleChecker.java:206) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkInternal(IncrementalHoareTripleChecker.java:131) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.checkInternal(ChainingHoareTripleChecker.java:455) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.checkInternal(ChainingHoareTripleChecker.java:103) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkInternal(CachingHoareTripleChecker.java:95) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$InternalSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:357) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.addOtherSuccessors(DeterministicInterpolantAutomaton.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:78) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1058) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:960) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:868) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:784) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-15 14:01:43,147 INFO L158 Benchmark]: Toolchain (without parser) took 53020.71ms. Allocated memory was 134.2MB in the beginning and 283.1MB in the end (delta: 148.9MB). Free memory was 111.5MB in the beginning and 110.3MB in the end (delta: 1.2MB). Peak memory consumption was 149.8MB. Max. memory is 16.1GB. [2021-12-15 14:01:43,147 INFO L158 Benchmark]: CDTParser took 0.55ms. Allocated memory is still 134.2MB. Free memory was 92.4MB in the beginning and 92.3MB in the end (delta: 64.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 14:01:43,147 INFO L158 Benchmark]: CACSL2BoogieTranslator took 438.37ms. Allocated memory is still 134.2MB. Free memory was 111.5MB in the beginning and 102.9MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 14:01:43,147 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.40ms. Allocated memory is still 134.2MB. Free memory was 102.9MB in the beginning and 100.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 14:01:43,147 INFO L158 Benchmark]: Boogie Preprocessor took 37.29ms. Allocated memory is still 134.2MB. Free memory was 100.8MB in the beginning and 99.6MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 14:01:43,148 INFO L158 Benchmark]: RCFGBuilder took 441.14ms. Allocated memory is still 134.2MB. Free memory was 99.6MB in the beginning and 85.7MB in the end (delta: 13.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-15 14:01:43,148 INFO L158 Benchmark]: TraceAbstraction took 52047.86ms. Allocated memory was 134.2MB in the beginning and 283.1MB in the end (delta: 148.9MB). Free memory was 85.4MB in the beginning and 110.3MB in the end (delta: -24.9MB). Peak memory consumption was 126.6MB. Max. memory is 16.1GB. [2021-12-15 14:01:43,148 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.55ms. Allocated memory is still 134.2MB. Free memory was 92.4MB in the beginning and 92.3MB in the end (delta: 64.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 438.37ms. Allocated memory is still 134.2MB. Free memory was 111.5MB in the beginning and 102.9MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.40ms. Allocated memory is still 134.2MB. Free memory was 102.9MB in the beginning and 100.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.29ms. Allocated memory is still 134.2MB. Free memory was 100.8MB in the beginning and 99.6MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 441.14ms. Allocated memory is still 134.2MB. Free memory was 99.6MB in the beginning and 85.7MB in the end (delta: 13.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 52047.86ms. Allocated memory was 134.2MB in the beginning and 283.1MB in the end (delta: 148.9MB). Free memory was 85.4MB in the beginning and 110.3MB in the end (delta: -24.9MB). Peak memory consumption was 126.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@5c73f651 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@5c73f651: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-15 14:01:43,187 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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-ext/dll_extends_pointer.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.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 b19ed65fc9d9f8e19f4d644b05d37e3da28cb107a90eedb15c652c094a7f23f1 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 14:01:45,071 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 14:01:45,073 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 14:01:45,104 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 14:01:45,105 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 14:01:45,107 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 14:01:45,108 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 14:01:45,112 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 14:01:45,114 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 14:01:45,117 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 14:01:45,118 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 14:01:45,121 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 14:01:45,121 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 14:01:45,123 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 14:01:45,124 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 14:01:45,127 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 14:01:45,127 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 14:01:45,128 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 14:01:45,130 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 14:01:45,134 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 14:01:45,135 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 14:01:45,136 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 14:01:45,137 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 14:01:45,138 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 14:01:45,143 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 14:01:45,143 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 14:01:45,143 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 14:01:45,150 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 14:01:45,151 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 14:01:45,151 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 14:01:45,151 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 14:01:45,152 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 14:01:45,153 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 14:01:45,154 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 14:01:45,154 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 14:01:45,155 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 14:01:45,155 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 14:01:45,155 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 14:01:45,156 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 14:01:45,157 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 14:01:45,157 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 14:01:45,158 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-12-15 14:01:45,186 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 14:01:45,187 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 14:01:45,188 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 14:01:45,188 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 14:01:45,189 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 14:01:45,189 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 14:01:45,190 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 14:01:45,190 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 14:01:45,190 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 14:01:45,190 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 14:01:45,191 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 14:01:45,191 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-15 14:01:45,191 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 14:01:45,191 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 14:01:45,191 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 14:01:45,192 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-15 14:01:45,192 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-15 14:01:45,192 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-15 14:01:45,192 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 14:01:45,192 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 14:01:45,192 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 14:01:45,193 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 14:01:45,193 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 14:01:45,193 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 14:01:45,193 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 14:01:45,193 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 14:01:45,193 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 14:01:45,193 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 14:01:45,194 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 14:01:45,194 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 14:01:45,194 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 14:01:45,194 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 14:01:45,194 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 14:01:45,194 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 14:01:45,195 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b19ed65fc9d9f8e19f4d644b05d37e3da28cb107a90eedb15c652c094a7f23f1 [2021-12-15 14:01:45,445 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 14:01:45,460 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 14:01:45,462 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 14:01:45,462 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 14:01:45,463 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 14:01:45,464 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety-ext/dll_extends_pointer.i [2021-12-15 14:01:45,508 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7886b5676/f2ea0128c2d94aa6a758e68bc6eb7609/FLAG8883d0d02 [2021-12-15 14:01:45,869 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 14:01:45,870 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety-ext/dll_extends_pointer.i [2021-12-15 14:01:45,882 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7886b5676/f2ea0128c2d94aa6a758e68bc6eb7609/FLAG8883d0d02 [2021-12-15 14:01:45,895 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7886b5676/f2ea0128c2d94aa6a758e68bc6eb7609 [2021-12-15 14:01:45,896 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 14:01:45,897 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 14:01:45,898 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 14:01:45,898 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 14:01:45,901 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 14:01:45,902 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 02:01:45" (1/1) ... [2021-12-15 14:01:45,902 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@530a586 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:01:45, skipping insertion in model container [2021-12-15 14:01:45,902 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 02:01:45" (1/1) ... [2021-12-15 14:01:45,907 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 14:01:45,932 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 14:01:46,203 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 14:01:46,217 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 14:01:46,261 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 14:01:46,286 INFO L208 MainTranslator]: Completed translation [2021-12-15 14:01:46,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:01:46 WrapperNode [2021-12-15 14:01:46,287 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 14:01:46,288 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 14:01:46,288 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 14:01:46,289 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 14:01:46,293 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:01:46" (1/1) ... [2021-12-15 14:01:46,322 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:01:46" (1/1) ... [2021-12-15 14:01:46,342 INFO L137 Inliner]: procedures = 124, calls = 21, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 62 [2021-12-15 14:01:46,343 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 14:01:46,344 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 14:01:46,344 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 14:01:46,344 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 14:01:46,350 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:01:46" (1/1) ... [2021-12-15 14:01:46,350 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:01:46" (1/1) ... [2021-12-15 14:01:46,356 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:01:46" (1/1) ... [2021-12-15 14:01:46,357 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:01:46" (1/1) ... [2021-12-15 14:01:46,373 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:01:46" (1/1) ... [2021-12-15 14:01:46,377 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:01:46" (1/1) ... [2021-12-15 14:01:46,381 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:01:46" (1/1) ... [2021-12-15 14:01:46,386 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 14:01:46,390 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 14:01:46,390 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 14:01:46,391 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 14:01:46,392 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:01:46" (1/1) ... [2021-12-15 14:01:46,397 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 14:01:46,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 14:01:46,445 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) [2021-12-15 14:01:46,464 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 [2021-12-15 14:01:46,477 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-15 14:01:46,477 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 14:01:46,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-15 14:01:46,477 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-15 14:01:46,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-15 14:01:46,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 14:01:46,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 14:01:46,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 14:01:46,600 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 14:01:46,602 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 14:01:46,907 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 14:01:46,912 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 14:01:46,912 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-15 14:01:46,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 02:01:46 BoogieIcfgContainer [2021-12-15 14:01:46,914 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 14:01:46,915 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 14:01:46,916 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 14:01:46,918 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 14:01:46,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 02:01:45" (1/3) ... [2021-12-15 14:01:46,919 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a4c62b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 02:01:46, skipping insertion in model container [2021-12-15 14:01:46,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:01:46" (2/3) ... [2021-12-15 14:01:46,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a4c62b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 02:01:46, skipping insertion in model container [2021-12-15 14:01:46,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 02:01:46" (3/3) ... [2021-12-15 14:01:46,921 INFO L111 eAbstractionObserver]: Analyzing ICFG dll_extends_pointer.i [2021-12-15 14:01:46,924 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 14:01:46,925 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 27 error locations. [2021-12-15 14:01:46,955 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 14:01:46,960 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 [2021-12-15 14:01:46,961 INFO L340 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2021-12-15 14:01:46,975 INFO L276 IsEmpty]: Start isEmpty. Operand has 57 states, 29 states have (on average 2.1379310344827585) internal successors, (62), 56 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:01:46,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-12-15 14:01:46,980 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:01:46,980 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-12-15 14:01:46,981 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-12-15 14:01:46,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:01:46,987 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2021-12-15 14:01:46,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 14:01:46,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1907381168] [2021-12-15 14:01:46,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:01:46,997 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 14:01:46,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 14:01:47,013 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 14:01:47,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-15 14:01:47,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:01:47,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-15 14:01:47,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 14:01:47,142 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 [2021-12-15 14:01:47,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:01:47,150 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 14:01:47,150 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 14:01:47,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1907381168] [2021-12-15 14:01:47,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1907381168] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:01:47,151 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:01:47,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 14:01:47,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896297314] [2021-12-15 14:01:47,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:01:47,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 14:01:47,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 14:01:47,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 14:01:47,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 14:01:47,175 INFO L87 Difference]: Start difference. First operand has 57 states, 29 states have (on average 2.1379310344827585) internal successors, (62), 56 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:01:47,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:01:47,275 INFO L93 Difference]: Finished difference Result 61 states and 64 transitions. [2021-12-15 14:01:47,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 14:01:47,277 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 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 3 [2021-12-15 14:01:47,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:01:47,285 INFO L225 Difference]: With dead ends: 61 [2021-12-15 14:01:47,290 INFO L226 Difference]: Without dead ends: 57 [2021-12-15 14:01:47,291 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 [2021-12-15 14:01:47,294 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 38 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 14:01:47,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 31 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 14:01:47,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-12-15 14:01:47,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 51. [2021-12-15 14:01:47,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 31 states have (on average 1.8064516129032258) internal successors, (56), 50 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:01:47,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 56 transitions. [2021-12-15 14:01:47,321 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 56 transitions. Word has length 3 [2021-12-15 14:01:47,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:01:47,321 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 56 transitions. [2021-12-15 14:01:47,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:01:47,322 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 56 transitions. [2021-12-15 14:01:47,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-12-15 14:01:47,322 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:01:47,323 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-12-15 14:01:47,346 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-15 14:01:47,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 14:01:47,530 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-12-15 14:01:47,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:01:47,532 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2021-12-15 14:01:47,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 14:01:47,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1769828574] [2021-12-15 14:01:47,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:01:47,533 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 14:01:47,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 14:01:47,535 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 14:01:47,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-15 14:01:47,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:01:47,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-15 14:01:47,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 14:01:47,609 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 [2021-12-15 14:01:47,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:01:47,617 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 14:01:47,617 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 14:01:47,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1769828574] [2021-12-15 14:01:47,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1769828574] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:01:47,618 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:01:47,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 14:01:47,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797289442] [2021-12-15 14:01:47,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:01:47,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 14:01:47,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 14:01:47,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 14:01:47,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 14:01:47,626 INFO L87 Difference]: Start difference. First operand 51 states and 56 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:01:47,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:01:47,699 INFO L93 Difference]: Finished difference Result 52 states and 58 transitions. [2021-12-15 14:01:47,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 14:01:47,700 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 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 3 [2021-12-15 14:01:47,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:01:47,700 INFO L225 Difference]: With dead ends: 52 [2021-12-15 14:01:47,701 INFO L226 Difference]: Without dead ends: 52 [2021-12-15 14:01:47,701 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 [2021-12-15 14:01:47,702 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 15 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 14:01:47,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 48 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 14:01:47,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-12-15 14:01:47,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 46. [2021-12-15 14:01:47,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 31 states have (on average 1.6451612903225807) internal successors, (51), 45 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:01:47,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2021-12-15 14:01:47,705 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 3 [2021-12-15 14:01:47,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:01:47,706 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2021-12-15 14:01:47,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:01:47,706 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2021-12-15 14:01:47,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-15 14:01:47,706 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:01:47,707 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:01:47,718 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-12-15 14:01:47,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 14:01:47,907 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-12-15 14:01:47,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:01:47,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1837114924, now seen corresponding path program 1 times [2021-12-15 14:01:47,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 14:01:47,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1495761811] [2021-12-15 14:01:47,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:01:47,909 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 14:01:47,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 14:01:47,912 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 14:01:47,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-15 14:01:48,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:01:48,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-15 14:01:48,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 14:01:48,032 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 [2021-12-15 14:01:48,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:01:48,056 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 14:01:48,056 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 14:01:48,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1495761811] [2021-12-15 14:01:48,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1495761811] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:01:48,057 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:01:48,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 14:01:48,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002187553] [2021-12-15 14:01:48,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:01:48,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 14:01:48,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 14:01:48,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 14:01:48,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 14:01:48,058 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:01:48,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:01:48,174 INFO L93 Difference]: Finished difference Result 56 states and 59 transitions. [2021-12-15 14:01:48,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-15 14:01:48,174 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2021-12-15 14:01:48,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:01:48,175 INFO L225 Difference]: With dead ends: 56 [2021-12-15 14:01:48,175 INFO L226 Difference]: Without dead ends: 56 [2021-12-15 14:01:48,175 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-15 14:01:48,176 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 44 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 14:01:48,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 29 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 14:01:48,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-12-15 14:01:48,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 49. [2021-12-15 14:01:48,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 35 states have (on average 1.6285714285714286) internal successors, (57), 48 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:01:48,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 57 transitions. [2021-12-15 14:01:48,180 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 57 transitions. Word has length 9 [2021-12-15 14:01:48,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:01:48,180 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 57 transitions. [2021-12-15 14:01:48,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:01:48,180 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 57 transitions. [2021-12-15 14:01:48,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-15 14:01:48,181 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:01:48,181 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:01:48,205 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-12-15 14:01:48,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 14:01:48,382 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-12-15 14:01:48,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:01:48,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1837114925, now seen corresponding path program 1 times [2021-12-15 14:01:48,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 14:01:48,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [182347870] [2021-12-15 14:01:48,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:01:48,383 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 14:01:48,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 14:01:48,385 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 14:01:48,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-15 14:01:48,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:01:48,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-15 14:01:48,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 14:01:48,478 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 [2021-12-15 14:01:48,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:01:48,531 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 14:01:48,531 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 14:01:48,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [182347870] [2021-12-15 14:01:48,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [182347870] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:01:48,531 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:01:48,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 14:01:48,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921869004] [2021-12-15 14:01:48,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:01:48,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 14:01:48,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 14:01:48,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 14:01:48,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 14:01:48,533 INFO L87 Difference]: Start difference. First operand 49 states and 57 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:01:48,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:01:48,670 INFO L93 Difference]: Finished difference Result 83 states and 95 transitions. [2021-12-15 14:01:48,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 14:01:48,671 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2021-12-15 14:01:48,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:01:48,671 INFO L225 Difference]: With dead ends: 83 [2021-12-15 14:01:48,671 INFO L226 Difference]: Without dead ends: 83 [2021-12-15 14:01:48,672 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-15 14:01:48,672 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 43 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 14:01:48,673 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 50 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 14:01:48,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-12-15 14:01:48,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 64. [2021-12-15 14:01:48,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 50 states have (on average 1.56) internal successors, (78), 63 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:01:48,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 78 transitions. [2021-12-15 14:01:48,677 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 78 transitions. Word has length 9 [2021-12-15 14:01:48,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:01:48,677 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 78 transitions. [2021-12-15 14:01:48,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:01:48,677 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 78 transitions. [2021-12-15 14:01:48,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-15 14:01:48,678 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:01:48,678 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:01:48,701 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-12-15 14:01:48,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 14:01:48,886 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-12-15 14:01:48,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:01:48,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1115986890, now seen corresponding path program 1 times [2021-12-15 14:01:48,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 14:01:48,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1291569435] [2021-12-15 14:01:48,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:01:48,888 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 14:01:48,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 14:01:48,890 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 14:01:48,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-15 14:01:48,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:01:48,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-15 14:01:48,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 14:01:48,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:01:48,983 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 14:01:48,983 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 14:01:48,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1291569435] [2021-12-15 14:01:48,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1291569435] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:01:48,983 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:01:48,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-15 14:01:48,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661859250] [2021-12-15 14:01:48,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:01:48,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 14:01:48,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 14:01:48,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 14:01:48,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 14:01:48,985 INFO L87 Difference]: Start difference. First operand 64 states and 78 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:01:49,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:01:49,082 INFO L93 Difference]: Finished difference Result 87 states and 101 transitions. [2021-12-15 14:01:49,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 14:01:49,082 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-12-15 14:01:49,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:01:49,083 INFO L225 Difference]: With dead ends: 87 [2021-12-15 14:01:49,083 INFO L226 Difference]: Without dead ends: 87 [2021-12-15 14:01:49,083 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-15 14:01:49,084 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 47 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 14:01:49,084 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 49 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 14:01:49,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-12-15 14:01:49,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 64. [2021-12-15 14:01:49,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 50 states have (on average 1.52) internal successors, (76), 63 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:01:49,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 76 transitions. [2021-12-15 14:01:49,087 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 76 transitions. Word has length 10 [2021-12-15 14:01:49,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:01:49,088 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 76 transitions. [2021-12-15 14:01:49,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:01:49,088 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 76 transitions. [2021-12-15 14:01:49,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-15 14:01:49,088 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:01:49,088 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:01:49,095 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-12-15 14:01:49,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 14:01:49,295 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-12-15 14:01:49,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:01:49,295 INFO L85 PathProgramCache]: Analyzing trace with hash 236809714, now seen corresponding path program 1 times [2021-12-15 14:01:49,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 14:01:49,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [976999681] [2021-12-15 14:01:49,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:01:49,296 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 14:01:49,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 14:01:49,297 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 14:01:49,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-12-15 14:01:49,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:01:49,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-15 14:01:49,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 14:01:49,398 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 [2021-12-15 14:01:49,402 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 [2021-12-15 14:01:49,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 14:01:49,444 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-12-15 14:01:49,454 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-15 14:01:49,454 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 14 treesize of output 14 [2021-12-15 14:01:49,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:01:49,465 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 14:01:49,466 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 14:01:49,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [976999681] [2021-12-15 14:01:49,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [976999681] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:01:49,466 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:01:49,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 14:01:49,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759063433] [2021-12-15 14:01:49,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:01:49,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 14:01:49,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 14:01:49,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 14:01:49,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-15 14:01:49,467 INFO L87 Difference]: Start difference. First operand 64 states and 76 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:01:49,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:01:49,553 INFO L93 Difference]: Finished difference Result 63 states and 75 transitions. [2021-12-15 14:01:49,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 14:01:49,554 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-12-15 14:01:49,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:01:49,554 INFO L225 Difference]: With dead ends: 63 [2021-12-15 14:01:49,554 INFO L226 Difference]: Without dead ends: 63 [2021-12-15 14:01:49,554 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-15 14:01:49,555 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 13 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 14:01:49,555 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 50 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 14:01:49,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-12-15 14:01:49,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2021-12-15 14:01:49,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 50 states have (on average 1.5) internal successors, (75), 62 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:01:49,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 75 transitions. [2021-12-15 14:01:49,558 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 75 transitions. Word has length 11 [2021-12-15 14:01:49,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:01:49,558 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 75 transitions. [2021-12-15 14:01:49,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:01:49,558 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 75 transitions. [2021-12-15 14:01:49,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-15 14:01:49,559 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:01:49,559 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:01:49,574 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-12-15 14:01:49,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 14:01:49,759 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-12-15 14:01:49,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:01:49,760 INFO L85 PathProgramCache]: Analyzing trace with hash 657991070, now seen corresponding path program 1 times [2021-12-15 14:01:49,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 14:01:49,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1279906790] [2021-12-15 14:01:49,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:01:49,760 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 14:01:49,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 14:01:49,761 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 14:01:49,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-12-15 14:01:49,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:01:49,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-15 14:01:49,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 14:01:49,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:01:49,936 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 14:01:49,936 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 14:01:49,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1279906790] [2021-12-15 14:01:49,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1279906790] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:01:49,937 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:01:49,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 14:01:49,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827004742] [2021-12-15 14:01:49,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:01:49,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-15 14:01:49,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 14:01:49,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-15 14:01:49,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-15 14:01:49,938 INFO L87 Difference]: Start difference. First operand 63 states and 75 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:01:50,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:01:50,054 INFO L93 Difference]: Finished difference Result 86 states and 98 transitions. [2021-12-15 14:01:50,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-15 14:01:50,054 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 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 14 [2021-12-15 14:01:50,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:01:50,055 INFO L225 Difference]: With dead ends: 86 [2021-12-15 14:01:50,055 INFO L226 Difference]: Without dead ends: 86 [2021-12-15 14:01:50,055 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-12-15 14:01:50,056 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 75 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 14:01:50,056 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 38 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 14:01:50,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-12-15 14:01:50,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 72. [2021-12-15 14:01:50,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 59 states have (on average 1.5423728813559323) internal successors, (91), 71 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:01:50,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 91 transitions. [2021-12-15 14:01:50,059 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 91 transitions. Word has length 14 [2021-12-15 14:01:50,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:01:50,059 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 91 transitions. [2021-12-15 14:01:50,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:01:50,059 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 91 transitions. [2021-12-15 14:01:50,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-15 14:01:50,060 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:01:50,060 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:01:50,068 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-12-15 14:01:50,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 14:01:50,260 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-12-15 14:01:50,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:01:50,261 INFO L85 PathProgramCache]: Analyzing trace with hash 657980085, now seen corresponding path program 1 times [2021-12-15 14:01:50,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 14:01:50,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1019752085] [2021-12-15 14:01:50,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:01:50,261 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 14:01:50,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 14:01:50,262 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 14:01:50,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-12-15 14:01:50,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:01:50,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-15 14:01:50,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 14:01:50,350 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 13 treesize of output 9 [2021-12-15 14:01:50,356 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 15 treesize of output 11 [2021-12-15 14:01:50,439 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 19 treesize of output 7 [2021-12-15 14:01:50,445 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 21 treesize of output 9 [2021-12-15 14:01:50,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:01:50,462 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 14:01:50,462 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 14:01:50,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1019752085] [2021-12-15 14:01:50,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1019752085] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:01:50,462 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:01:50,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-15 14:01:50,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233776008] [2021-12-15 14:01:50,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:01:50,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-15 14:01:50,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 14:01:50,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-15 14:01:50,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-15 14:01:50,463 INFO L87 Difference]: Start difference. First operand 72 states and 91 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:01:50,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:01:50,670 INFO L93 Difference]: Finished difference Result 77 states and 93 transitions. [2021-12-15 14:01:50,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-15 14:01:50,671 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 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 14 [2021-12-15 14:01:50,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:01:50,672 INFO L225 Difference]: With dead ends: 77 [2021-12-15 14:01:50,672 INFO L226 Difference]: Without dead ends: 77 [2021-12-15 14:01:50,672 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-12-15 14:01:50,673 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 35 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-15 14:01:50,673 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 97 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-15 14:01:50,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-12-15 14:01:50,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 67. [2021-12-15 14:01:50,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 54 states have (on average 1.5185185185185186) internal successors, (82), 66 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:01:50,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 82 transitions. [2021-12-15 14:01:50,676 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 82 transitions. Word has length 14 [2021-12-15 14:01:50,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:01:50,676 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 82 transitions. [2021-12-15 14:01:50,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:01:50,676 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 82 transitions. [2021-12-15 14:01:50,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-15 14:01:50,677 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:01:50,677 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:01:50,686 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-12-15 14:01:50,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 14:01:50,877 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-12-15 14:01:50,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:01:50,878 INFO L85 PathProgramCache]: Analyzing trace with hash -675555265, now seen corresponding path program 1 times [2021-12-15 14:01:50,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 14:01:50,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [935518115] [2021-12-15 14:01:50,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:01:50,878 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 14:01:50,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 14:01:50,882 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 14:01:50,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-12-15 14:01:50,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:01:50,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-15 14:01:50,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 14:01:51,017 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:01:51,017 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 14:01:51,018 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 14:01:51,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [935518115] [2021-12-15 14:01:51,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [935518115] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:01:51,018 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:01:51,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-15 14:01:51,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693531115] [2021-12-15 14:01:51,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:01:51,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-15 14:01:51,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 14:01:51,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-15 14:01:51,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-15 14:01:51,019 INFO L87 Difference]: Start difference. First operand 67 states and 82 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:01:51,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:01:51,153 INFO L93 Difference]: Finished difference Result 76 states and 83 transitions. [2021-12-15 14:01:51,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-15 14:01:51,153 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-12-15 14:01:51,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:01:51,153 INFO L225 Difference]: With dead ends: 76 [2021-12-15 14:01:51,154 INFO L226 Difference]: Without dead ends: 76 [2021-12-15 14:01:51,154 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-12-15 14:01:51,154 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 43 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 14:01:51,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 57 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 14:01:51,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-12-15 14:01:51,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 63. [2021-12-15 14:01:51,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 51 states have (on average 1.4313725490196079) internal successors, (73), 62 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:01:51,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 73 transitions. [2021-12-15 14:01:51,157 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 73 transitions. Word has length 16 [2021-12-15 14:01:51,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:01:51,157 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 73 transitions. [2021-12-15 14:01:51,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:01:51,157 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 73 transitions. [2021-12-15 14:01:51,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-15 14:01:51,158 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:01:51,158 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:01:51,171 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-12-15 14:01:51,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 14:01:51,365 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-12-15 14:01:51,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:01:51,365 INFO L85 PathProgramCache]: Analyzing trace with hash -18664237, now seen corresponding path program 1 times [2021-12-15 14:01:51,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 14:01:51,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1266678333] [2021-12-15 14:01:51,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:01:51,366 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 14:01:51,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 14:01:51,367 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 14:01:51,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-12-15 14:01:51,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:01:51,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 21 conjunts are in the unsatisfiable core [2021-12-15 14:01:51,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 14:01:51,526 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 [2021-12-15 14:01:51,544 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 [2021-12-15 14:01:51,585 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-12-15 14:01:51,585 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 21 treesize of output 20 [2021-12-15 14:01:51,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 14:01:51,603 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-15 14:01:51,636 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-12-15 14:01:51,636 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2021-12-15 14:01:51,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 14:01:51,642 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 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 [2021-12-15 14:01:51,672 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 [2021-12-15 14:01:51,675 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 [2021-12-15 14:01:51,716 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:01:51,717 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 14:01:51,800 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:01:51,800 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 14:01:51,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1266678333] [2021-12-15 14:01:51,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1266678333] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 14:01:51,800 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-15 14:01:51,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-12-15 14:01:51,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331058138] [2021-12-15 14:01:51,801 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-15 14:01:51,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-15 14:01:51,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 14:01:51,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-15 14:01:51,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-15 14:01:51,803 INFO L87 Difference]: Start difference. First operand 63 states and 73 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:01:52,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:01:52,069 INFO L93 Difference]: Finished difference Result 77 states and 87 transitions. [2021-12-15 14:01:52,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-15 14:01:52,070 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-12-15 14:01:52,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:01:52,071 INFO L225 Difference]: With dead ends: 77 [2021-12-15 14:01:52,071 INFO L226 Difference]: Without dead ends: 77 [2021-12-15 14:01:52,072 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-12-15 14:01:52,072 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 18 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-15 14:01:52,073 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 124 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-15 14:01:52,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-12-15 14:01:52,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 73. [2021-12-15 14:01:52,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 61 states have (on average 1.3770491803278688) internal successors, (84), 72 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:01:52,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 84 transitions. [2021-12-15 14:01:52,082 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 84 transitions. Word has length 17 [2021-12-15 14:01:52,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:01:52,082 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 84 transitions. [2021-12-15 14:01:52,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:01:52,082 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 84 transitions. [2021-12-15 14:01:52,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-15 14:01:52,083 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:01:52,083 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:01:52,090 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2021-12-15 14:01:52,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 14:01:52,289 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-12-15 14:01:52,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:01:52,290 INFO L85 PathProgramCache]: Analyzing trace with hash -578592253, now seen corresponding path program 1 times [2021-12-15 14:01:52,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 14:01:52,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [228256270] [2021-12-15 14:01:52,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:01:52,290 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 14:01:52,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 14:01:52,293 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 14:01:52,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-12-15 14:01:52,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:01:52,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-15 14:01:52,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 14:01:52,505 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:01:52,506 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 14:01:54,643 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:01:54,644 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 14:01:54,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [228256270] [2021-12-15 14:01:54,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [228256270] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 14:01:54,644 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-15 14:01:54,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-12-15 14:01:54,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139551460] [2021-12-15 14:01:54,644 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-15 14:01:54,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-15 14:01:54,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 14:01:54,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-15 14:01:54,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=37, Unknown=1, NotChecked=0, Total=56 [2021-12-15 14:01:54,645 INFO L87 Difference]: Start difference. First operand 73 states and 84 transitions. Second operand has 8 states, 7 states have (on average 5.0) internal successors, (35), 8 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:01:54,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:01:54,680 INFO L93 Difference]: Finished difference Result 75 states and 85 transitions. [2021-12-15 14:01:54,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-15 14:01:54,681 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.0) internal successors, (35), 8 states have internal predecessors, (35), 0 states have call successors, (0), 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 [2021-12-15 14:01:54,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:01:54,681 INFO L225 Difference]: With dead ends: 75 [2021-12-15 14:01:54,681 INFO L226 Difference]: Without dead ends: 64 [2021-12-15 14:01:54,681 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=18, Invalid=37, Unknown=1, NotChecked=0, Total=56 [2021-12-15 14:01:54,682 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 62 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 14:01:54,682 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 95 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 62 Unchecked, 0.0s Time] [2021-12-15 14:01:54,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-12-15 14:01:54,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-12-15 14:01:54,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 52 states have (on average 1.4230769230769231) internal successors, (74), 63 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) [2021-12-15 14:01:54,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 74 transitions. [2021-12-15 14:01:54,684 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 74 transitions. Word has length 18 [2021-12-15 14:01:54,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:01:54,684 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 74 transitions. [2021-12-15 14:01:54,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.0) internal successors, (35), 8 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:01:54,684 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 74 transitions. [2021-12-15 14:01:54,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-15 14:01:54,684 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:01:54,684 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:01:54,695 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-12-15 14:01:54,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 14:01:54,891 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-12-15 14:01:54,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:01:54,891 INFO L85 PathProgramCache]: Analyzing trace with hash -952974365, now seen corresponding path program 1 times [2021-12-15 14:01:54,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 14:01:54,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [374262374] [2021-12-15 14:01:54,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:01:54,892 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 14:01:54,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 14:01:54,893 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 14:01:54,894 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-12-15 14:01:54,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:01:54,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-15 14:01:54,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 14:01:55,008 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 13 treesize of output 9 [2021-12-15 14:01:55,077 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 15 treesize of output 7 [2021-12-15 14:01:55,083 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:01:55,083 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 14:01:55,084 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 14:01:55,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [374262374] [2021-12-15 14:01:55,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [374262374] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:01:55,084 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:01:55,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-15 14:01:55,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502709109] [2021-12-15 14:01:55,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:01:55,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-15 14:01:55,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 14:01:55,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-15 14:01:55,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-15 14:01:55,086 INFO L87 Difference]: Start difference. First operand 64 states and 74 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:01:55,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:01:55,374 INFO L93 Difference]: Finished difference Result 82 states and 90 transitions. [2021-12-15 14:01:55,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-15 14:01:55,375 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-12-15 14:01:55,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:01:55,375 INFO L225 Difference]: With dead ends: 82 [2021-12-15 14:01:55,375 INFO L226 Difference]: Without dead ends: 82 [2021-12-15 14:01:55,375 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-12-15 14:01:55,376 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 59 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-15 14:01:55,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 134 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-15 14:01:55,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-12-15 14:01:55,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 64. [2021-12-15 14:01:55,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 52 states have (on average 1.4038461538461537) internal successors, (73), 63 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:01:55,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 73 transitions. [2021-12-15 14:01:55,378 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 73 transitions. Word has length 21 [2021-12-15 14:01:55,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:01:55,378 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 73 transitions. [2021-12-15 14:01:55,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:01:55,378 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 73 transitions. [2021-12-15 14:01:55,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-15 14:01:55,379 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:01:55,379 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:01:55,397 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-12-15 14:01:55,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 14:01:55,587 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-12-15 14:01:55,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:01:55,587 INFO L85 PathProgramCache]: Analyzing trace with hash 522565856, now seen corresponding path program 1 times [2021-12-15 14:01:55,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 14:01:55,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1865814042] [2021-12-15 14:01:55,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:01:55,588 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 14:01:55,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 14:01:55,589 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 14:01:55,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-12-15 14:01:55,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:01:55,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-15 14:01:55,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 14:01:55,808 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 13 treesize of output 9 [2021-12-15 14:01:55,980 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 [2021-12-15 14:01:56,012 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:01:56,012 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 14:01:56,013 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 14:01:56,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1865814042] [2021-12-15 14:01:56,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1865814042] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:01:56,013 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:01:56,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-15 14:01:56,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503418796] [2021-12-15 14:01:56,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:01:56,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-15 14:01:56,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 14:01:56,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-15 14:01:56,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-15 14:01:56,014 INFO L87 Difference]: Start difference. First operand 64 states and 73 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:01:56,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:01:56,028 INFO L93 Difference]: Finished difference Result 80 states and 92 transitions. [2021-12-15 14:01:56,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-15 14:01:56,028 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-12-15 14:01:56,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:01:56,029 INFO L225 Difference]: With dead ends: 80 [2021-12-15 14:01:56,029 INFO L226 Difference]: Without dead ends: 80 [2021-12-15 14:01:56,029 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-15 14:01:56,029 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 20 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 34 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 14:01:56,030 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 85 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 34 Unchecked, 0.0s Time] [2021-12-15 14:01:56,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-12-15 14:01:56,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2021-12-15 14:01:56,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 67 states have (on average 1.3582089552238805) internal successors, (91), 78 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:01:56,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 91 transitions. [2021-12-15 14:01:56,032 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 91 transitions. Word has length 22 [2021-12-15 14:01:56,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:01:56,032 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 91 transitions. [2021-12-15 14:01:56,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:01:56,033 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 91 transitions. [2021-12-15 14:01:56,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-15 14:01:56,033 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:01:56,033 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] [2021-12-15 14:01:56,043 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-12-15 14:01:56,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 14:01:56,241 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-12-15 14:01:56,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:01:56,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1402337693, now seen corresponding path program 1 times [2021-12-15 14:01:56,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 14:01:56,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1708766293] [2021-12-15 14:01:56,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:01:56,242 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 14:01:56,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 14:01:56,243 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 14:01:56,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-12-15 14:01:56,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:01:56,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 21 conjunts are in the unsatisfiable core [2021-12-15 14:01:56,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 14:01:56,363 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 [2021-12-15 14:01:56,415 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-12-15 14:01:56,416 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 20 treesize of output 27 [2021-12-15 14:01:56,434 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 [2021-12-15 14:01:56,464 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-15 14:01:56,465 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 43 treesize of output 42 [2021-12-15 14:01:56,494 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-12-15 14:01:56,494 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 28 [2021-12-15 14:01:56,538 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 27 treesize of output 15 [2021-12-15 14:01:56,580 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-15 14:01:56,588 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:01:56,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 14:01:56,718 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 14:01:56,718 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 22 treesize of output 23 [2021-12-15 14:01:56,722 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 38 treesize of output 30 [2021-12-15 14:01:56,724 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 13 treesize of output 11 [2021-12-15 14:01:56,732 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 14:01:56,733 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 [2021-12-15 14:01:56,736 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 [2021-12-15 14:01:56,739 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 [2021-12-15 14:01:56,782 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:01:56,783 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 14:01:56,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1708766293] [2021-12-15 14:01:56,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1708766293] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 14:01:56,783 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-15 14:01:56,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 12 [2021-12-15 14:01:56,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909436979] [2021-12-15 14:01:56,783 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-15 14:01:56,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-15 14:01:56,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 14:01:56,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-15 14:01:56,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=123, Unknown=1, NotChecked=0, Total=156 [2021-12-15 14:01:56,784 INFO L87 Difference]: Start difference. First operand 79 states and 91 transitions. Second operand has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 13 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) [2021-12-15 14:01:57,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:01:57,357 INFO L93 Difference]: Finished difference Result 102 states and 112 transitions. [2021-12-15 14:01:57,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-15 14:01:57,358 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 13 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 23 [2021-12-15 14:01:57,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:01:57,358 INFO L225 Difference]: With dead ends: 102 [2021-12-15 14:01:57,358 INFO L226 Difference]: Without dead ends: 102 [2021-12-15 14:01:57,358 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 26 SyntacticMatches, 9 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=131, Invalid=374, Unknown=1, NotChecked=0, Total=506 [2021-12-15 14:01:57,359 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 110 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 43 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-15 14:01:57,359 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 91 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 315 Invalid, 0 Unknown, 43 Unchecked, 0.4s Time] [2021-12-15 14:01:57,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-12-15 14:01:57,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 84. [2021-12-15 14:01:57,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 72 states have (on average 1.375) internal successors, (99), 83 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:01:57,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 99 transitions. [2021-12-15 14:01:57,361 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 99 transitions. Word has length 23 [2021-12-15 14:01:57,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:01:57,361 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 99 transitions. [2021-12-15 14:01:57,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 13 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) [2021-12-15 14:01:57,361 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 99 transitions. [2021-12-15 14:01:57,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-15 14:01:57,362 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:01:57,362 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] [2021-12-15 14:01:57,373 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-12-15 14:01:57,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 14:01:57,573 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-12-15 14:01:57,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:01:57,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1402337692, now seen corresponding path program 1 times [2021-12-15 14:01:57,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 14:01:57,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1619151910] [2021-12-15 14:01:57,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:01:57,575 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 14:01:57,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 14:01:57,576 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 14:01:57,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-12-15 14:01:57,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:01:57,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 28 conjunts are in the unsatisfiable core [2021-12-15 14:01:57,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 14:01:57,763 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 [2021-12-15 14:01:57,769 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 [2021-12-15 14:01:57,838 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-15 14:01:57,838 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 18 [2021-12-15 14:01:57,864 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-15 14:01:57,865 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 14 treesize of output 14 [2021-12-15 14:01:57,907 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 [2021-12-15 14:01:57,913 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 [2021-12-15 14:01:57,951 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-15 14:01:57,951 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 [2021-12-15 14:01:57,956 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 [2021-12-15 14:01:58,001 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-12-15 14:01:58,002 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 21 treesize of output 20 [2021-12-15 14:01:58,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 14:01:58,007 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 31 treesize of output 26 [2021-12-15 14:01:58,053 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 [2021-12-15 14:01:58,056 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 [2021-12-15 14:01:58,112 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:01:58,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 14:01:58,617 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_438 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~list~0#1.base| v_ArrVal_438) |c_ULTIMATE.start_main_~y~0#1.base|) |c_ULTIMATE.start_main_~y~0#1.offset|))) (bvule .cse0 (bvadd .cse0 (_ bv4 32))))) (forall ((v_ArrVal_437 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_438 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~list~0#1.base| v_ArrVal_438) |c_ULTIMATE.start_main_~y~0#1.base|) |c_ULTIMATE.start_main_~y~0#1.offset|) (_ bv4 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~list~0#1.base| v_ArrVal_437) |c_ULTIMATE.start_main_~y~0#1.base|) |c_ULTIMATE.start_main_~y~0#1.offset|))))) is different from false [2021-12-15 14:01:58,629 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 14:01:58,629 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 [2021-12-15 14:01:58,636 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 14:01:58,636 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 [2021-12-15 14:01:58,639 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 [2021-12-15 14:01:58,641 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 [2021-12-15 14:01:58,651 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 [2021-12-15 14:01:58,655 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 [2021-12-15 14:01:58,785 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 14:01:58,786 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 35 treesize of output 28 [2021-12-15 14:01:58,788 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 40 treesize of output 28 [2021-12-15 14:01:58,793 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 13 treesize of output 9 [2021-12-15 14:01:59,186 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:01:59,186 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 14:01:59,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1619151910] [2021-12-15 14:01:59,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1619151910] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 14:01:59,186 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-15 14:01:59,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-12-15 14:01:59,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799923157] [2021-12-15 14:01:59,186 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-15 14:01:59,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-15 14:01:59,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 14:01:59,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-15 14:01:59,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=228, Unknown=1, NotChecked=30, Total=306 [2021-12-15 14:01:59,187 INFO L87 Difference]: Start difference. First operand 84 states and 99 transitions. Second operand has 18 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 18 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:02:00,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:02:00,024 INFO L93 Difference]: Finished difference Result 100 states and 113 transitions. [2021-12-15 14:02:00,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-15 14:02:00,025 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 18 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-12-15 14:02:00,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:02:00,025 INFO L225 Difference]: With dead ends: 100 [2021-12-15 14:02:00,026 INFO L226 Difference]: Without dead ends: 100 [2021-12-15 14:02:00,026 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=167, Invalid=486, Unknown=1, NotChecked=48, Total=702 [2021-12-15 14:02:00,026 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 93 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 149 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-15 14:02:00,026 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 113 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 229 Invalid, 0 Unknown, 149 Unchecked, 0.5s Time] [2021-12-15 14:02:00,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-12-15 14:02:00,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 87. [2021-12-15 14:02:00,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 75 states have (on average 1.3866666666666667) internal successors, (104), 86 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:02:00,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 104 transitions. [2021-12-15 14:02:00,028 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 104 transitions. Word has length 23 [2021-12-15 14:02:00,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:02:00,029 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 104 transitions. [2021-12-15 14:02:00,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 18 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:02:00,029 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 104 transitions. [2021-12-15 14:02:00,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-15 14:02:00,029 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:02:00,029 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:02:00,038 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-12-15 14:02:00,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 14:02:00,238 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-12-15 14:02:00,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:02:00,239 INFO L85 PathProgramCache]: Analyzing trace with hash -980327547, now seen corresponding path program 1 times [2021-12-15 14:02:00,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 14:02:00,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1883718880] [2021-12-15 14:02:00,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:02:00,239 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 14:02:00,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 14:02:00,241 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 14:02:00,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-12-15 14:02:00,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:02:00,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-15 14:02:00,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 14:02:00,348 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 [2021-12-15 14:02:00,361 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 13 treesize of output 9 [2021-12-15 14:02:00,419 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 20 treesize of output 12 [2021-12-15 14:02:00,429 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:02:00,429 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 14:02:00,429 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 14:02:00,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1883718880] [2021-12-15 14:02:00,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1883718880] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:02:00,430 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:02:00,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-15 14:02:00,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984934650] [2021-12-15 14:02:00,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:02:00,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-15 14:02:00,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 14:02:00,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-15 14:02:00,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-15 14:02:00,431 INFO L87 Difference]: Start difference. First operand 87 states and 104 transitions. Second operand has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:02:00,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:02:00,667 INFO L93 Difference]: Finished difference Result 88 states and 103 transitions. [2021-12-15 14:02:00,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-15 14:02:00,667 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-12-15 14:02:00,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:02:00,668 INFO L225 Difference]: With dead ends: 88 [2021-12-15 14:02:00,668 INFO L226 Difference]: Without dead ends: 88 [2021-12-15 14:02:00,668 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2021-12-15 14:02:00,669 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 29 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-15 14:02:00,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 68 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-15 14:02:00,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-12-15 14:02:00,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2021-12-15 14:02:00,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 75 states have (on average 1.3733333333333333) internal successors, (103), 86 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:02:00,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 103 transitions. [2021-12-15 14:02:00,671 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 103 transitions. Word has length 23 [2021-12-15 14:02:00,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:02:00,671 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 103 transitions. [2021-12-15 14:02:00,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:02:00,671 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 103 transitions. [2021-12-15 14:02:00,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-15 14:02:00,671 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:02:00,672 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:02:00,681 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2021-12-15 14:02:00,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 14:02:00,879 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-12-15 14:02:00,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:02:00,880 INFO L85 PathProgramCache]: Analyzing trace with hash -522796429, now seen corresponding path program 1 times [2021-12-15 14:02:00,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 14:02:00,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [576040301] [2021-12-15 14:02:00,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:02:00,887 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 14:02:00,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 14:02:00,889 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 14:02:00,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-12-15 14:02:01,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:02:01,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-15 14:02:01,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 14:02:01,038 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-15 14:02:01,070 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-15 14:02:01,071 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 1 case distinctions, treesize of input 14 treesize of output 14 [2021-12-15 14:02:01,092 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-15 14:02:01,115 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-15 14:02:01,115 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 27 treesize of output 28 [2021-12-15 14:02:01,163 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-12-15 14:02:01,163 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2021-12-15 14:02:01,196 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 24 treesize of output 12 [2021-12-15 14:02:01,224 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:02:01,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 14:02:01,325 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_532 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= (_ bv0 32) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~list~0#1.base| v_ArrVal_532) |c_ULTIMATE.start_main_~y~0#1.base|) |c_ULTIMATE.start_main_~y~0#1.offset|)))) is different from false [2021-12-15 14:02:01,330 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 14:02:01,331 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 [2021-12-15 14:02:01,333 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 [2021-12-15 14:02:01,494 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:02:01,494 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 14:02:01,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [576040301] [2021-12-15 14:02:01,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [576040301] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 14:02:01,494 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-15 14:02:01,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2021-12-15 14:02:01,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784374738] [2021-12-15 14:02:01,494 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-15 14:02:01,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-15 14:02:01,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 14:02:01,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-15 14:02:01,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=148, Unknown=1, NotChecked=24, Total=210 [2021-12-15 14:02:01,496 INFO L87 Difference]: Start difference. First operand 87 states and 103 transitions. Second operand has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:02:01,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:02:01,908 INFO L93 Difference]: Finished difference Result 127 states and 147 transitions. [2021-12-15 14:02:01,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-15 14:02:01,909 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 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 24 [2021-12-15 14:02:01,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:02:01,909 INFO L225 Difference]: With dead ends: 127 [2021-12-15 14:02:01,910 INFO L226 Difference]: Without dead ends: 127 [2021-12-15 14:02:01,910 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=302, Unknown=1, NotChecked=36, Total=420 [2021-12-15 14:02:01,910 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 47 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 134 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-15 14:02:01,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 172 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 184 Invalid, 0 Unknown, 134 Unchecked, 0.3s Time] [2021-12-15 14:02:01,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-12-15 14:02:01,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 119. [2021-12-15 14:02:01,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 107 states have (on average 1.308411214953271) internal successors, (140), 118 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) [2021-12-15 14:02:01,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 140 transitions. [2021-12-15 14:02:01,913 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 140 transitions. Word has length 24 [2021-12-15 14:02:01,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:02:01,913 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 140 transitions. [2021-12-15 14:02:01,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:02:01,914 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 140 transitions. [2021-12-15 14:02:01,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-15 14:02:01,914 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:02:01,914 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:02:01,929 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-12-15 14:02:02,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 14:02:02,128 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-12-15 14:02:02,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:02:02,128 INFO L85 PathProgramCache]: Analyzing trace with hash 973208805, now seen corresponding path program 1 times [2021-12-15 14:02:02,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 14:02:02,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [258717347] [2021-12-15 14:02:02,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:02:02,129 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 14:02:02,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 14:02:02,130 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 14:02:02,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-12-15 14:02:02,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:02:02,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 30 conjunts are in the unsatisfiable core [2021-12-15 14:02:02,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 14:02:02,330 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 [2021-12-15 14:02:02,335 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 [2021-12-15 14:02:02,397 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-15 14:02:02,397 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 18 [2021-12-15 14:02:02,407 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-15 14:02:02,407 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 14 treesize of output 14 [2021-12-15 14:02:02,449 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 [2021-12-15 14:02:02,454 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 [2021-12-15 14:02:02,489 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-15 14:02:02,490 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-12-15 14:02:02,494 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 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 [2021-12-15 14:02:02,559 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-12-15 14:02:02,559 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 21 treesize of output 20 [2021-12-15 14:02:02,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 14:02:02,565 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 31 treesize of output 26 [2021-12-15 14:02:02,616 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 [2021-12-15 14:02:02,621 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 [2021-12-15 14:02:02,742 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:02:02,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 14:02:03,140 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_583 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_584 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~list~0#1.base| v_ArrVal_583) |c_ULTIMATE.start_main_~y~0#1.base|) |c_ULTIMATE.start_main_~y~0#1.offset|) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~list~0#1.base| v_ArrVal_584) |c_ULTIMATE.start_main_~y~0#1.base|) |c_ULTIMATE.start_main_~y~0#1.offset|)))) (forall ((v_ArrVal_583 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~list~0#1.base| v_ArrVal_583) |c_ULTIMATE.start_main_~y~0#1.base|) |c_ULTIMATE.start_main_~y~0#1.offset|))) (bvule (bvadd .cse0 (_ bv8 32)) (bvadd .cse0 (_ bv12 32)))))) is different from false [2021-12-15 14:02:03,156 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 14:02:03,156 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 [2021-12-15 14:02:03,162 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 14:02:03,163 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 [2021-12-15 14:02:03,166 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 52 treesize of output 44 [2021-12-15 14:02:03,170 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 [2021-12-15 14:02:03,178 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 [2021-12-15 14:02:03,181 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