./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength5.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c60dc3ce59c2c65912da9b7b458247bdc42b4524b29b39bec7ce63758c18c031 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 05:55:01,493 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 05:55:01,497 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 05:55:01,547 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 05:55:01,548 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 05:55:01,552 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 05:55:01,554 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 05:55:01,556 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 05:55:01,558 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 05:55:01,564 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 05:55:01,565 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 05:55:01,566 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 05:55:01,566 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 05:55:01,569 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 05:55:01,570 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 05:55:01,577 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 05:55:01,578 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 05:55:01,579 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 05:55:01,581 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 05:55:01,586 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 05:55:01,588 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 05:55:01,589 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 05:55:01,590 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 05:55:01,591 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 05:55:01,595 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 05:55:01,595 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 05:55:01,596 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 05:55:01,597 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 05:55:01,598 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 05:55:01,599 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 05:55:01,599 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 05:55:01,600 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 05:55:01,601 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 05:55:01,602 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 05:55:01,604 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 05:55:01,604 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 05:55:01,604 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 05:55:01,605 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 05:55:01,605 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 05:55:01,606 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 05:55:01,606 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 05:55:01,608 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-16 05:55:01,641 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 05:55:01,641 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 05:55:01,642 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 05:55:01,642 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 05:55:01,643 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 05:55:01,643 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 05:55:01,644 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 05:55:01,644 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 05:55:01,644 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 05:55:01,644 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 05:55:01,645 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 05:55:01,645 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-16 05:55:01,646 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 05:55:01,646 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 05:55:01,646 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 05:55:01,646 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-16 05:55:01,646 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-16 05:55:01,646 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-16 05:55:01,647 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 05:55:01,647 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-16 05:55:01,647 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 05:55:01,647 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 05:55:01,648 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 05:55:01,648 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 05:55:01,648 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 05:55:01,648 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 05:55:01,648 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 05:55:01,649 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 05:55:01,650 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 05:55:01,650 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 05:55:01,650 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 05:55:01,650 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c60dc3ce59c2c65912da9b7b458247bdc42b4524b29b39bec7ce63758c18c031 [2021-12-16 05:55:01,867 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 05:55:01,898 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 05:55:01,900 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 05:55:01,901 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 05:55:01,902 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 05:55:01,903 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength5.c [2021-12-16 05:55:01,961 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf3f03d6b/7dc05047af47457a8869eb87c6431273/FLAG81f9ad836 [2021-12-16 05:55:02,340 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 05:55:02,341 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength5.c [2021-12-16 05:55:02,350 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf3f03d6b/7dc05047af47457a8869eb87c6431273/FLAG81f9ad836 [2021-12-16 05:55:02,363 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf3f03d6b/7dc05047af47457a8869eb87c6431273 [2021-12-16 05:55:02,365 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 05:55:02,367 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 05:55:02,368 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 05:55:02,368 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 05:55:02,371 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 05:55:02,371 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 05:55:02" (1/1) ... [2021-12-16 05:55:02,372 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5aa0353e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:55:02, skipping insertion in model container [2021-12-16 05:55:02,373 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 05:55:02" (1/1) ... [2021-12-16 05:55:02,378 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 05:55:02,388 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 05:55:02,519 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 05:55:02,525 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 05:55:02,538 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 05:55:02,557 INFO L208 MainTranslator]: Completed translation [2021-12-16 05:55:02,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:55:02 WrapperNode [2021-12-16 05:55:02,558 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 05:55:02,559 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 05:55:02,559 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 05:55:02,561 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 05:55:02,567 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:55:02" (1/1) ... [2021-12-16 05:55:02,575 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:55:02" (1/1) ... [2021-12-16 05:55:02,595 INFO L137 Inliner]: procedures = 8, calls = 14, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 70 [2021-12-16 05:55:02,596 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 05:55:02,597 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 05:55:02,597 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 05:55:02,597 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 05:55:02,603 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:55:02" (1/1) ... [2021-12-16 05:55:02,604 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:55:02" (1/1) ... [2021-12-16 05:55:02,606 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:55:02" (1/1) ... [2021-12-16 05:55:02,606 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:55:02" (1/1) ... [2021-12-16 05:55:02,609 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:55:02" (1/1) ... [2021-12-16 05:55:02,612 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:55:02" (1/1) ... [2021-12-16 05:55:02,613 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:55:02" (1/1) ... [2021-12-16 05:55:02,614 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 05:55:02,615 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 05:55:02,615 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 05:55:02,615 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 05:55:02,619 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:55:02" (1/1) ... [2021-12-16 05:55:02,624 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 05:55:02,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 05:55:02,643 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) [2021-12-16 05:55:02,655 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 [2021-12-16 05:55:02,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-16 05:55:02,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 05:55:02,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 05:55:02,682 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-16 05:55:02,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-16 05:55:02,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-16 05:55:02,736 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 05:55:02,737 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 05:55:02,851 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 05:55:02,856 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 05:55:02,856 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-12-16 05:55:02,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 05:55:02 BoogieIcfgContainer [2021-12-16 05:55:02,857 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 05:55:02,859 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 05:55:02,859 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 05:55:02,866 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 05:55:02,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 05:55:02" (1/3) ... [2021-12-16 05:55:02,867 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52a5536b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 05:55:02, skipping insertion in model container [2021-12-16 05:55:02,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:55:02" (2/3) ... [2021-12-16 05:55:02,868 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52a5536b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 05:55:02, skipping insertion in model container [2021-12-16 05:55:02,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 05:55:02" (3/3) ... [2021-12-16 05:55:02,869 INFO L111 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength5.c [2021-12-16 05:55:02,874 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 05:55:02,874 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2021-12-16 05:55:02,911 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 05:55:02,917 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 [2021-12-16 05:55:02,917 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-12-16 05:55:02,929 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 30 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:55:02,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-16 05:55:02,933 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:55:02,934 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-16 05:55:02,934 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION (and 5 more)] === [2021-12-16 05:55:02,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:55:02,939 INFO L85 PathProgramCache]: Analyzing trace with hash 28698920, now seen corresponding path program 1 times [2021-12-16 05:55:02,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:55:02,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748006743] [2021-12-16 05:55:02,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:55:02,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:55:03,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:55:03,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:55:03,158 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:55:03,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748006743] [2021-12-16 05:55:03,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748006743] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 05:55:03,159 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 05:55:03,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 05:55:03,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263297315] [2021-12-16 05:55:03,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 05:55:03,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 05:55:03,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:55:03,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 05:55:03,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 05:55:03,215 INFO L87 Difference]: Start difference. First operand has 31 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 30 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:55:03,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:55:03,361 INFO L93 Difference]: Finished difference Result 76 states and 81 transitions. [2021-12-16 05:55:03,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 05:55:03,364 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-12-16 05:55:03,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:55:03,370 INFO L225 Difference]: With dead ends: 76 [2021-12-16 05:55:03,371 INFO L226 Difference]: Without dead ends: 68 [2021-12-16 05:55:03,374 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 05:55:03,379 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 60 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 05:55:03,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 61 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 05:55:03,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-12-16 05:55:03,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 32. [2021-12-16 05:55:03,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 31 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) [2021-12-16 05:55:03,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2021-12-16 05:55:03,415 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 5 [2021-12-16 05:55:03,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:55:03,416 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2021-12-16 05:55:03,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:55:03,416 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2021-12-16 05:55:03,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-16 05:55:03,417 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:55:03,417 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-16 05:55:03,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 05:55:03,418 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION (and 5 more)] === [2021-12-16 05:55:03,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:55:03,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1809810359, now seen corresponding path program 1 times [2021-12-16 05:55:03,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:55:03,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468420186] [2021-12-16 05:55:03,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:55:03,422 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:55:03,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:55:03,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:55:03,488 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:55:03,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468420186] [2021-12-16 05:55:03,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468420186] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 05:55:03,488 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 05:55:03,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 05:55:03,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723774246] [2021-12-16 05:55:03,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 05:55:03,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 05:55:03,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:55:03,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 05:55:03,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 05:55:03,491 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:55:03,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:55:03,517 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2021-12-16 05:55:03,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 05:55:03,518 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-12-16 05:55:03,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:55:03,519 INFO L225 Difference]: With dead ends: 30 [2021-12-16 05:55:03,519 INFO L226 Difference]: Without dead ends: 30 [2021-12-16 05:55:03,519 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 [2021-12-16 05:55:03,520 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 21 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 05:55:03,521 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 22 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 05:55:03,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-12-16 05:55:03,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-12-16 05:55:03,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 24 states have (on average 1.375) internal successors, (33), 29 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:55:03,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2021-12-16 05:55:03,525 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 7 [2021-12-16 05:55:03,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:55:03,525 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2021-12-16 05:55:03,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:55:03,525 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2021-12-16 05:55:03,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-16 05:55:03,526 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:55:03,526 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-16 05:55:03,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 05:55:03,526 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION (and 5 more)] === [2021-12-16 05:55:03,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:55:03,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1809810360, now seen corresponding path program 1 times [2021-12-16 05:55:03,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:55:03,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713094575] [2021-12-16 05:55:03,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:55:03,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:55:03,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:55:03,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:55:03,606 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:55:03,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713094575] [2021-12-16 05:55:03,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713094575] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 05:55:03,611 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 05:55:03,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 05:55:03,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499664745] [2021-12-16 05:55:03,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 05:55:03,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 05:55:03,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:55:03,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 05:55:03,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-16 05:55:03,616 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:55:03,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:55:03,662 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2021-12-16 05:55:03,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 05:55:03,662 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-12-16 05:55:03,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:55:03,663 INFO L225 Difference]: With dead ends: 35 [2021-12-16 05:55:03,663 INFO L226 Difference]: Without dead ends: 35 [2021-12-16 05:55:03,664 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-16 05:55:03,665 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 8 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 05:55:03,665 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 39 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 05:55:03,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-12-16 05:55:03,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2021-12-16 05:55:03,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 27 states have (on average 1.3333333333333333) internal successors, (36), 32 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) [2021-12-16 05:55:03,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2021-12-16 05:55:03,669 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 7 [2021-12-16 05:55:03,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:55:03,669 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2021-12-16 05:55:03,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:55:03,670 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2021-12-16 05:55:03,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-16 05:55:03,670 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:55:03,670 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 05:55:03,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-16 05:55:03,671 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION (and 5 more)] === [2021-12-16 05:55:03,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:55:03,672 INFO L85 PathProgramCache]: Analyzing trace with hash -352773613, now seen corresponding path program 1 times [2021-12-16 05:55:03,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:55:03,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764700183] [2021-12-16 05:55:03,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:55:03,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:55:03,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:55:03,718 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-16 05:55:03,719 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:55:03,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764700183] [2021-12-16 05:55:03,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764700183] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 05:55:03,719 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 05:55:03,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 05:55:03,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979202062] [2021-12-16 05:55:03,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 05:55:03,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 05:55:03,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:55:03,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 05:55:03,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 05:55:03,721 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:55:03,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:55:03,751 INFO L93 Difference]: Finished difference Result 58 states and 64 transitions. [2021-12-16 05:55:03,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 05:55:03,752 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 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 12 [2021-12-16 05:55:03,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:55:03,753 INFO L225 Difference]: With dead ends: 58 [2021-12-16 05:55:03,754 INFO L226 Difference]: Without dead ends: 58 [2021-12-16 05:55:03,754 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 [2021-12-16 05:55:03,755 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 24 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 05:55:03,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 43 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 05:55:03,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-12-16 05:55:03,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 35. [2021-12-16 05:55:03,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 29 states have (on average 1.3448275862068966) internal successors, (39), 34 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:55:03,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2021-12-16 05:55:03,768 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 12 [2021-12-16 05:55:03,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:55:03,769 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2021-12-16 05:55:03,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:55:03,769 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2021-12-16 05:55:03,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-16 05:55:03,770 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:55:03,770 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 05:55:03,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-16 05:55:03,770 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION (and 5 more)] === [2021-12-16 05:55:03,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:55:03,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1948884381, now seen corresponding path program 1 times [2021-12-16 05:55:03,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:55:03,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503468306] [2021-12-16 05:55:03,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:55:03,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:55:03,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:55:03,854 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:55:03,855 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:55:03,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503468306] [2021-12-16 05:55:03,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503468306] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 05:55:03,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1107207102] [2021-12-16 05:55:03,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:55:03,856 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 05:55:03,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 05:55:03,858 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) [2021-12-16 05:55:03,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-16 05:55:03,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:55:03,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-16 05:55:03,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 05:55:04,108 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:55:04,108 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 05:55:04,221 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 27 treesize of output 23 [2021-12-16 05:55:04,281 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:55:04,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1107207102] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 05:55:04,282 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 05:55:04,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2021-12-16 05:55:04,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411351455] [2021-12-16 05:55:04,282 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 05:55:04,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 05:55:04,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:55:04,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 05:55:04,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-12-16 05:55:04,289 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand has 9 states, 8 states have (on average 3.5) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:55:04,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:55:04,390 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2021-12-16 05:55:04,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 05:55:04,390 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-12-16 05:55:04,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:55:04,395 INFO L225 Difference]: With dead ends: 41 [2021-12-16 05:55:04,396 INFO L226 Difference]: Without dead ends: 41 [2021-12-16 05:55:04,398 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-16 05:55:04,399 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 91 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 05:55:04,400 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 42 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 05:55:04,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-12-16 05:55:04,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 36. [2021-12-16 05:55:04,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 30 states have (on average 1.3333333333333333) internal successors, (40), 35 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:55:04,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2021-12-16 05:55:04,404 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 13 [2021-12-16 05:55:04,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:55:04,404 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2021-12-16 05:55:04,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:55:04,405 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2021-12-16 05:55:04,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-16 05:55:04,405 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:55:04,406 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 05:55:04,432 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-16 05:55:04,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 05:55:04,619 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION (and 5 more)] === [2021-12-16 05:55:04,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:55:04,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1948919938, now seen corresponding path program 1 times [2021-12-16 05:55:04,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:55:04,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644122830] [2021-12-16 05:55:04,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:55:04,620 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:55:04,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:55:04,657 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-16 05:55:04,657 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:55:04,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644122830] [2021-12-16 05:55:04,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644122830] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 05:55:04,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108837229] [2021-12-16 05:55:04,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:55:04,657 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 05:55:04,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 05:55:04,659 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) [2021-12-16 05:55:04,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-16 05:55:04,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:55:04,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-16 05:55:04,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 05:55:04,720 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-16 05:55:04,720 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 1 case distinctions, treesize of input 9 treesize of output 15 [2021-12-16 05:55:04,748 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-16 05:55:04,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 05:55:04,784 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-16 05:55:04,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1108837229] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 05:55:04,784 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 05:55:04,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2021-12-16 05:55:04,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62792045] [2021-12-16 05:55:04,785 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 05:55:04,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 05:55:04,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:55:04,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 05:55:04,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 05:55:04,786 INFO L87 Difference]: Start difference. First operand 36 states and 40 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) [2021-12-16 05:55:04,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:55:04,807 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2021-12-16 05:55:04,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 05:55:04,808 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 [2021-12-16 05:55:04,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:55:04,809 INFO L225 Difference]: With dead ends: 35 [2021-12-16 05:55:04,809 INFO L226 Difference]: Without dead ends: 35 [2021-12-16 05:55:04,810 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 05:55:04,812 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 38 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 05:55:04,813 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 22 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 05:55:04,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-12-16 05:55:04,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-12-16 05:55:04,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 30 states have (on average 1.3) internal successors, (39), 34 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:55:04,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2021-12-16 05:55:04,824 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 13 [2021-12-16 05:55:04,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:55:04,824 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2021-12-16 05:55:04,825 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) [2021-12-16 05:55:04,825 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2021-12-16 05:55:04,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-16 05:55:04,825 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:55:04,825 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 05:55:04,851 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-16 05:55:05,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-12-16 05:55:05,040 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION (and 5 more)] === [2021-12-16 05:55:05,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:55:05,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1948919939, now seen corresponding path program 1 times [2021-12-16 05:55:05,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:55:05,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292104323] [2021-12-16 05:55:05,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:55:05,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:55:05,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:55:05,105 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-16 05:55:05,106 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:55:05,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292104323] [2021-12-16 05:55:05,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292104323] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 05:55:05,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648233876] [2021-12-16 05:55:05,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:55:05,107 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 05:55:05,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 05:55:05,108 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) [2021-12-16 05:55:05,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-16 05:55:05,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:55:05,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-16 05:55:05,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 05:55:05,180 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-16 05:55:05,181 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 1 case distinctions, treesize of input 9 treesize of output 15 [2021-12-16 05:55:05,266 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-16 05:55:05,267 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 05:55:05,346 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-16 05:55:05,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648233876] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 05:55:05,346 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 05:55:05,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2021-12-16 05:55:05,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521893248] [2021-12-16 05:55:05,347 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 05:55:05,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 05:55:05,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:55:05,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 05:55:05,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-12-16 05:55:05,348 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand has 8 states, 7 states have (on average 5.285714285714286) internal successors, (37), 8 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:55:05,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:55:05,436 INFO L93 Difference]: Finished difference Result 80 states and 89 transitions. [2021-12-16 05:55:05,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 05:55:05,436 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.285714285714286) internal successors, (37), 8 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-12-16 05:55:05,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:55:05,437 INFO L225 Difference]: With dead ends: 80 [2021-12-16 05:55:05,437 INFO L226 Difference]: Without dead ends: 80 [2021-12-16 05:55:05,437 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-12-16 05:55:05,438 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 146 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 05:55:05,438 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 49 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 05:55:05,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-12-16 05:55:05,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 41. [2021-12-16 05:55:05,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 40 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:55:05,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2021-12-16 05:55:05,441 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 13 [2021-12-16 05:55:05,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:55:05,441 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2021-12-16 05:55:05,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.285714285714286) internal successors, (37), 8 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:55:05,441 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2021-12-16 05:55:05,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-16 05:55:05,442 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:55:05,442 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-12-16 05:55:05,467 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-16 05:55:05,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 05:55:05,664 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION (and 5 more)] === [2021-12-16 05:55:05,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:55:05,665 INFO L85 PathProgramCache]: Analyzing trace with hash 286926307, now seen corresponding path program 1 times [2021-12-16 05:55:05,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:55:05,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722159184] [2021-12-16 05:55:05,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:55:05,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:55:05,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:55:05,715 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:55:05,715 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:55:05,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722159184] [2021-12-16 05:55:05,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722159184] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 05:55:05,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245270592] [2021-12-16 05:55:05,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:55:05,716 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 05:55:05,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 05:55:05,717 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) [2021-12-16 05:55:05,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-16 05:55:05,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:55:05,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-16 05:55:05,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 05:55:05,802 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:55:05,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 05:55:05,838 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:55:05,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245270592] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 05:55:05,838 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 05:55:05,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2021-12-16 05:55:05,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575837423] [2021-12-16 05:55:05,838 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 05:55:05,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 05:55:05,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:55:05,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 05:55:05,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-12-16 05:55:05,840 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 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) [2021-12-16 05:55:05,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:55:05,947 INFO L93 Difference]: Finished difference Result 48 states and 53 transitions. [2021-12-16 05:55:05,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 05:55:05,948 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 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 14 [2021-12-16 05:55:05,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:55:05,948 INFO L225 Difference]: With dead ends: 48 [2021-12-16 05:55:05,948 INFO L226 Difference]: Without dead ends: 48 [2021-12-16 05:55:05,949 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-12-16 05:55:05,949 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 61 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 05:55:05,949 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 64 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 05:55:05,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-12-16 05:55:05,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 41. [2021-12-16 05:55:05,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 36 states have (on average 1.2777777777777777) internal successors, (46), 40 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:55:05,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2021-12-16 05:55:05,952 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 14 [2021-12-16 05:55:05,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:55:05,952 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2021-12-16 05:55:05,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 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) [2021-12-16 05:55:05,952 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2021-12-16 05:55:05,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-16 05:55:05,953 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:55:05,953 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 05:55:05,983 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-16 05:55:06,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 05:55:06,175 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION (and 5 more)] === [2021-12-16 05:55:06,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:55:06,176 INFO L85 PathProgramCache]: Analyzing trace with hash -153316857, now seen corresponding path program 1 times [2021-12-16 05:55:06,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:55:06,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138245279] [2021-12-16 05:55:06,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:55:06,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:55:06,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:55:06,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:55:06,228 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:55:06,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138245279] [2021-12-16 05:55:06,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138245279] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 05:55:06,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46644036] [2021-12-16 05:55:06,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:55:06,229 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 05:55:06,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 05:55:06,230 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) [2021-12-16 05:55:06,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-16 05:55:06,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:55:06,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-16 05:55:06,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 05:55:06,340 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 [2021-12-16 05:55:06,395 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-16 05:55:06,397 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-16 05:55:06,397 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 17 treesize of output 10 [2021-12-16 05:55:06,414 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:55:06,414 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 05:55:06,461 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 14 treesize of output 12 [2021-12-16 05:55:06,464 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 26 treesize of output 24 [2021-12-16 05:55:06,525 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:55:06,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [46644036] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 05:55:06,526 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 05:55:06,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 9, 9] total 17 [2021-12-16 05:55:06,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393748451] [2021-12-16 05:55:06,527 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 05:55:06,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-16 05:55:06,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:55:06,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-16 05:55:06,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2021-12-16 05:55:06,528 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand has 17 states, 17 states have (on average 2.411764705882353) internal successors, (41), 17 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:55:06,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:55:06,681 INFO L93 Difference]: Finished difference Result 78 states and 86 transitions. [2021-12-16 05:55:06,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-16 05:55:06,682 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.411764705882353) internal successors, (41), 17 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-12-16 05:55:06,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:55:06,683 INFO L225 Difference]: With dead ends: 78 [2021-12-16 05:55:06,683 INFO L226 Difference]: Without dead ends: 78 [2021-12-16 05:55:06,683 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=123, Invalid=339, Unknown=0, NotChecked=0, Total=462 [2021-12-16 05:55:06,684 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 55 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 05:55:06,684 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 116 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 05:55:06,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-12-16 05:55:06,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 47. [2021-12-16 05:55:06,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 42 states have (on average 1.2619047619047619) internal successors, (53), 46 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) [2021-12-16 05:55:06,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2021-12-16 05:55:06,686 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 16 [2021-12-16 05:55:06,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:55:06,687 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2021-12-16 05:55:06,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.411764705882353) internal successors, (41), 17 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:55:06,687 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2021-12-16 05:55:06,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-16 05:55:06,687 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:55:06,687 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 05:55:06,712 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-16 05:55:06,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 05:55:06,888 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION (and 5 more)] === [2021-12-16 05:55:06,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:55:06,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1980019516, now seen corresponding path program 1 times [2021-12-16 05:55:06,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:55:06,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203787961] [2021-12-16 05:55:06,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:55:06,889 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:55:06,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:55:06,934 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:55:06,934 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:55:06,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203787961] [2021-12-16 05:55:06,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203787961] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 05:55:06,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016036463] [2021-12-16 05:55:06,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:55:06,935 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 05:55:06,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 05:55:06,936 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) [2021-12-16 05:55:06,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-16 05:55:07,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:55:07,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-16 05:55:07,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 05:55:07,067 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:55:07,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 05:55:07,117 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:55:07,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016036463] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 05:55:07,117 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 05:55:07,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2021-12-16 05:55:07,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647224061] [2021-12-16 05:55:07,117 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 05:55:07,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-16 05:55:07,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:55:07,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-16 05:55:07,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-12-16 05:55:07,118 INFO L87 Difference]: Start difference. First operand 47 states and 53 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 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) [2021-12-16 05:55:07,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:55:07,264 INFO L93 Difference]: Finished difference Result 95 states and 102 transitions. [2021-12-16 05:55:07,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-16 05:55:07,265 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 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 17 [2021-12-16 05:55:07,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:55:07,265 INFO L225 Difference]: With dead ends: 95 [2021-12-16 05:55:07,265 INFO L226 Difference]: Without dead ends: 95 [2021-12-16 05:55:07,266 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2021-12-16 05:55:07,266 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 212 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 05:55:07,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [212 Valid, 71 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 05:55:07,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-12-16 05:55:07,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 53. [2021-12-16 05:55:07,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 48 states have (on average 1.2291666666666667) internal successors, (59), 52 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) [2021-12-16 05:55:07,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 59 transitions. [2021-12-16 05:55:07,270 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 59 transitions. Word has length 17 [2021-12-16 05:55:07,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:55:07,270 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 59 transitions. [2021-12-16 05:55:07,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 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) [2021-12-16 05:55:07,270 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 59 transitions. [2021-12-16 05:55:07,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-16 05:55:07,271 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:55:07,271 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 05:55:07,298 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-16 05:55:07,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 05:55:07,484 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION (and 5 more)] === [2021-12-16 05:55:07,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:55:07,484 INFO L85 PathProgramCache]: Analyzing trace with hash -128290732, now seen corresponding path program 1 times [2021-12-16 05:55:07,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:55:07,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003116434] [2021-12-16 05:55:07,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:55:07,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:55:07,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:55:07,548 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-16 05:55:07,548 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:55:07,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003116434] [2021-12-16 05:55:07,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003116434] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 05:55:07,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356073741] [2021-12-16 05:55:07,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:55:07,549 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 05:55:07,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 05:55:07,550 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) [2021-12-16 05:55:07,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-16 05:55:07,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:55:07,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 21 conjunts are in the unsatisfiable core [2021-12-16 05:55:07,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 05:55:07,622 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-12-16 05:55:07,627 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 9 treesize of output 11 [2021-12-16 05:55:07,762 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-16 05:55:07,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 05:55:07,889 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-16 05:55:07,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [356073741] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 05:55:07,890 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 05:55:07,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 8 [2021-12-16 05:55:07,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591909314] [2021-12-16 05:55:07,890 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 05:55:07,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 05:55:07,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:55:07,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 05:55:07,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-12-16 05:55:07,892 INFO L87 Difference]: Start difference. First operand 53 states and 59 transitions. Second operand has 9 states, 8 states have (on average 6.0) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:55:07,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:55:07,963 INFO L93 Difference]: Finished difference Result 100 states and 114 transitions. [2021-12-16 05:55:07,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 05:55:07,964 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.0) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-12-16 05:55:07,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:55:07,965 INFO L225 Difference]: With dead ends: 100 [2021-12-16 05:55:07,965 INFO L226 Difference]: Without dead ends: 100 [2021-12-16 05:55:07,965 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-12-16 05:55:07,966 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 46 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 05:55:07,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 71 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 05:55:07,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-12-16 05:55:07,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 94. [2021-12-16 05:55:07,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 89 states have (on average 1.2584269662921348) internal successors, (112), 93 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:55:07,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 112 transitions. [2021-12-16 05:55:07,979 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 112 transitions. Word has length 19 [2021-12-16 05:55:07,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:55:07,980 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 112 transitions. [2021-12-16 05:55:07,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.0) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:55:07,981 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 112 transitions. [2021-12-16 05:55:07,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-16 05:55:07,982 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:55:07,982 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 05:55:08,005 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-16 05:55:08,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 05:55:08,200 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION (and 5 more)] === [2021-12-16 05:55:08,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:55:08,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1688999147, now seen corresponding path program 1 times [2021-12-16 05:55:08,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:55:08,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678396993] [2021-12-16 05:55:08,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:55:08,200 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:55:08,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:55:08,266 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-16 05:55:08,267 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:55:08,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678396993] [2021-12-16 05:55:08,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678396993] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 05:55:08,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970123391] [2021-12-16 05:55:08,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:55:08,267 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 05:55:08,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 05:55:08,268 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) [2021-12-16 05:55:08,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-16 05:55:08,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:55:08,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 22 conjunts are in the unsatisfiable core [2021-12-16 05:55:08,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 05:55:08,400 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 [2021-12-16 05:55:08,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 05:55:08,521 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 [2021-12-16 05:55:08,570 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 [2021-12-16 05:55:08,585 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-16 05:55:08,585 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 05:55:10,713 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~1#1_41| Int)) (or (< |v_ULTIMATE.start_main_~i~1#1_41| (+ |c_ULTIMATE.start_main_~i~1#1| 1)) (forall ((v_ArrVal_165 Int)) (= (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#b~0#1.base|) (+ |c_ULTIMATE.start_main_~#b~0#1.offset| (* |v_ULTIMATE.start_main_~i~1#1_41| 4)) v_ArrVal_165) |c_ULTIMATE.start_main_~#b~0#1.offset|) 0)))) is different from false [2021-12-16 05:55:10,757 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 [2021-12-16 05:55:10,760 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 154 treesize of output 150 [2021-12-16 05:55:10,958 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 2 not checked. [2021-12-16 05:55:10,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1970123391] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 05:55:10,959 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 05:55:10,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 10, 11] total 21 [2021-12-16 05:55:10,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941538712] [2021-12-16 05:55:10,959 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 05:55:10,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-16 05:55:10,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:55:10,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-16 05:55:10,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=308, Unknown=1, NotChecked=36, Total=420 [2021-12-16 05:55:10,961 INFO L87 Difference]: Start difference. First operand 94 states and 112 transitions. Second operand has 21 states, 21 states have (on average 3.6666666666666665) internal successors, (77), 21 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) [2021-12-16 05:55:13,012 WARN L838 $PredicateComparison]: unable to prove that (and (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#b~0#1.base|) (+ |c_ULTIMATE.start_main_~#b~0#1.offset| (* |c_ULTIMATE.start_main_~i~1#1| 4))) 0) (= |c_ULTIMATE.start_foo_#res#1| 0) (= |c_ULTIMATE.start_main_~i~1#1| 0) (= 0 |c_ULTIMATE.start_main_~#b~0#1.offset|) (= |c_ULTIMATE.start_main_#t~ret3#1| 0) (forall ((|v_ULTIMATE.start_main_~i~1#1_41| Int)) (or (< |v_ULTIMATE.start_main_~i~1#1_41| (+ |c_ULTIMATE.start_main_~i~1#1| 1)) (forall ((v_ArrVal_165 Int)) (= (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#b~0#1.base|) (+ |c_ULTIMATE.start_main_~#b~0#1.offset| (* |v_ULTIMATE.start_main_~i~1#1_41| 4)) v_ArrVal_165) |c_ULTIMATE.start_main_~#b~0#1.offset|) 0)))) (= |c_ULTIMATE.start_foo_~i~0#1| 0)) is different from false [2021-12-16 05:55:15,015 WARN L838 $PredicateComparison]: unable to prove that (and (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#b~0#1.base|) (+ |c_ULTIMATE.start_main_~#b~0#1.offset| (* |c_ULTIMATE.start_main_~i~1#1| 4))) 0) (= |c_ULTIMATE.start_main_~i~1#1| 0) (= 0 |c_ULTIMATE.start_main_~#b~0#1.offset|) (forall ((|v_ULTIMATE.start_main_~i~1#1_41| Int)) (or (< |v_ULTIMATE.start_main_~i~1#1_41| (+ |c_ULTIMATE.start_main_~i~1#1| 1)) (forall ((v_ArrVal_165 Int)) (= (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#b~0#1.base|) (+ |c_ULTIMATE.start_main_~#b~0#1.offset| (* |v_ULTIMATE.start_main_~i~1#1_41| 4)) v_ArrVal_165) |c_ULTIMATE.start_main_~#b~0#1.offset|) 0))))) is different from false [2021-12-16 05:55:15,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:55:15,153 INFO L93 Difference]: Finished difference Result 111 states and 125 transitions. [2021-12-16 05:55:15,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-16 05:55:15,154 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.6666666666666665) internal successors, (77), 21 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) Word has length 28 [2021-12-16 05:55:15,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:55:15,156 INFO L225 Difference]: With dead ends: 111 [2021-12-16 05:55:15,156 INFO L226 Difference]: Without dead ends: 111 [2021-12-16 05:55:15,156 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=127, Invalid=482, Unknown=3, NotChecked=144, Total=756 [2021-12-16 05:55:15,157 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 164 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 45 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 05:55:15,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [164 Valid, 95 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 194 Invalid, 0 Unknown, 45 Unchecked, 0.1s Time] [2021-12-16 05:55:15,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-12-16 05:55:15,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 98. [2021-12-16 05:55:15,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 93 states have (on average 1.2473118279569892) internal successors, (116), 97 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) [2021-12-16 05:55:15,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 116 transitions. [2021-12-16 05:55:15,160 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 116 transitions. Word has length 28 [2021-12-16 05:55:15,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:55:15,160 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 116 transitions. [2021-12-16 05:55:15,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.6666666666666665) internal successors, (77), 21 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) [2021-12-16 05:55:15,160 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 116 transitions. [2021-12-16 05:55:15,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-16 05:55:15,161 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:55:15,161 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2021-12-16 05:55:15,191 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-16 05:55:15,383 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,SelfDestructingSolverStorable11 [2021-12-16 05:55:15,383 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION (and 5 more)] === [2021-12-16 05:55:15,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:55:15,384 INFO L85 PathProgramCache]: Analyzing trace with hash -702798240, now seen corresponding path program 2 times [2021-12-16 05:55:15,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:55:15,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101001208] [2021-12-16 05:55:15,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:55:15,384 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:55:15,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:55:15,436 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-16 05:55:15,436 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:55:15,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101001208] [2021-12-16 05:55:15,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101001208] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 05:55:15,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682816761] [2021-12-16 05:55:15,437 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-16 05:55:15,437 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 05:55:15,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 05:55:15,438 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) [2021-12-16 05:55:15,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-16 05:55:15,494 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-16 05:55:15,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 05:55:15,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-16 05:55:15,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 05:55:15,611 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-16 05:55:15,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 05:55:15,819 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-16 05:55:15,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1682816761] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 05:55:15,820 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 05:55:15,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 7, 7] total 14 [2021-12-16 05:55:15,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889121215] [2021-12-16 05:55:15,820 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 05:55:15,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-16 05:55:15,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:55:15,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-16 05:55:15,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-12-16 05:55:15,822 INFO L87 Difference]: Start difference. First operand 98 states and 116 transitions. Second operand has 15 states, 14 states have (on average 5.5) internal successors, (77), 15 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) [2021-12-16 05:55:16,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:55:16,685 INFO L93 Difference]: Finished difference Result 300 states and 320 transitions. [2021-12-16 05:55:16,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-12-16 05:55:16,686 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 5.5) internal successors, (77), 15 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) Word has length 29 [2021-12-16 05:55:16,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:55:16,687 INFO L225 Difference]: With dead ends: 300 [2021-12-16 05:55:16,687 INFO L226 Difference]: Without dead ends: 300 [2021-12-16 05:55:16,688 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 555 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=606, Invalid=1464, Unknown=0, NotChecked=0, Total=2070 [2021-12-16 05:55:16,689 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 1190 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 231 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1190 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 231 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 05:55:16,689 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1190 Valid, 76 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [231 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 05:55:16,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2021-12-16 05:55:16,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 97. [2021-12-16 05:55:16,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 93 states have (on average 1.1827956989247312) internal successors, (110), 96 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:55:16,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 110 transitions. [2021-12-16 05:55:16,699 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 110 transitions. Word has length 29 [2021-12-16 05:55:16,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:55:16,699 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 110 transitions. [2021-12-16 05:55:16,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 5.5) internal successors, (77), 15 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) [2021-12-16 05:55:16,700 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 110 transitions. [2021-12-16 05:55:16,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-16 05:55:16,702 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:55:16,702 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2021-12-16 05:55:16,731 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-16 05:55:16,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-16 05:55:16,926 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION (and 5 more)] === [2021-12-16 05:55:16,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:55:16,926 INFO L85 PathProgramCache]: Analyzing trace with hash 777529983, now seen corresponding path program 1 times [2021-12-16 05:55:16,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:55:16,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565479051] [2021-12-16 05:55:16,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:55:16,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:55:16,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:55:16,991 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 7 proven. 33 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-16 05:55:16,991 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:55:16,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565479051] [2021-12-16 05:55:16,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565479051] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 05:55:16,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1447934459] [2021-12-16 05:55:16,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:55:16,991 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 05:55:16,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 05:55:16,992 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 05:55:16,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-16 05:55:17,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:55:17,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-16 05:55:17,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 05:55:17,155 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 13 proven. 27 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-16 05:55:17,155 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 05:55:17,241 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 13 proven. 27 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-16 05:55:17,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1447934459] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 05:55:17,241 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 05:55:17,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2021-12-16 05:55:17,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860366568] [2021-12-16 05:55:17,242 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 05:55:17,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-16 05:55:17,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:55:17,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-16 05:55:17,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-12-16 05:55:17,243 INFO L87 Difference]: Start difference. First operand 97 states and 110 transitions. Second operand has 13 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 13 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:55:17,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:55:17,547 INFO L93 Difference]: Finished difference Result 172 states and 184 transitions. [2021-12-16 05:55:17,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-16 05:55:17,547 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 13 states have internal predecessors, (61), 0 states have call successors, (0), 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 35 [2021-12-16 05:55:17,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:55:17,550 INFO L225 Difference]: With dead ends: 172 [2021-12-16 05:55:17,550 INFO L226 Difference]: Without dead ends: 172 [2021-12-16 05:55:17,551 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=223, Invalid=533, Unknown=0, NotChecked=0, Total=756 [2021-12-16 05:55:17,551 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 257 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 05:55:17,552 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [257 Valid, 126 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 05:55:17,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-12-16 05:55:17,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 95. [2021-12-16 05:55:17,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 91 states have (on average 1.164835164835165) internal successors, (106), 94 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:55:17,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 106 transitions. [2021-12-16 05:55:17,558 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 106 transitions. Word has length 35 [2021-12-16 05:55:17,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:55:17,559 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 106 transitions. [2021-12-16 05:55:17,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 13 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:55:17,559 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 106 transitions. [2021-12-16 05:55:17,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-12-16 05:55:17,561 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:55:17,562 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 05:55:17,590 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-16 05:55:17,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-16 05:55:17,779 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION (and 5 more)] === [2021-12-16 05:55:17,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:55:17,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1252804968, now seen corresponding path program 1 times [2021-12-16 05:55:17,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:55:17,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272348105] [2021-12-16 05:55:17,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:55:17,780 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:55:17,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:55:17,863 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 20 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-16 05:55:17,863 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:55:17,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272348105] [2021-12-16 05:55:17,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272348105] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 05:55:17,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498906347] [2021-12-16 05:55:17,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:55:17,864 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 05:55:17,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 05:55:17,865 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 05:55:17,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-16 05:55:17,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:55:17,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-16 05:55:17,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 05:55:18,027 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 23 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-16 05:55:18,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 05:55:18,135 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 23 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-16 05:55:18,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1498906347] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 05:55:18,135 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 05:55:18,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2021-12-16 05:55:18,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820079596] [2021-12-16 05:55:18,136 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 05:55:18,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-16 05:55:18,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:55:18,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-16 05:55:18,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-12-16 05:55:18,138 INFO L87 Difference]: Start difference. First operand 95 states and 106 transitions. Second operand has 12 states, 12 states have (on average 5.166666666666667) internal successors, (62), 12 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) [2021-12-16 05:55:18,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:55:18,296 INFO L93 Difference]: Finished difference Result 103 states and 109 transitions. [2021-12-16 05:55:18,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 05:55:18,296 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.166666666666667) internal successors, (62), 12 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) Word has length 41 [2021-12-16 05:55:18,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:55:18,297 INFO L225 Difference]: With dead ends: 103 [2021-12-16 05:55:18,297 INFO L226 Difference]: Without dead ends: 103 [2021-12-16 05:55:18,297 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 76 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2021-12-16 05:55:18,298 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 73 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 05:55:18,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 83 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 05:55:18,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-12-16 05:55:18,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 95. [2021-12-16 05:55:18,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 91 states have (on average 1.1318681318681318) internal successors, (103), 94 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) [2021-12-16 05:55:18,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 103 transitions. [2021-12-16 05:55:18,300 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 103 transitions. Word has length 41 [2021-12-16 05:55:18,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:55:18,300 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 103 transitions. [2021-12-16 05:55:18,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.166666666666667) internal successors, (62), 12 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) [2021-12-16 05:55:18,301 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 103 transitions. [2021-12-16 05:55:18,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-12-16 05:55:18,301 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:55:18,301 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 05:55:18,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-16 05:55:18,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-16 05:55:18,515 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION (and 5 more)] === [2021-12-16 05:55:18,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:55:18,516 INFO L85 PathProgramCache]: Analyzing trace with hash -2037391793, now seen corresponding path program 2 times [2021-12-16 05:55:18,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:55:18,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004867756] [2021-12-16 05:55:18,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:55:18,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:55:18,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:55:18,589 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-16 05:55:18,589 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:55:18,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004867756] [2021-12-16 05:55:18,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004867756] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 05:55:18,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957604167] [2021-12-16 05:55:18,589 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-16 05:55:18,590 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 05:55:18,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 05:55:18,591 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 05:55:18,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-16 05:55:18,668 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-16 05:55:18,668 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 05:55:18,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-16 05:55:18,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 05:55:18,936 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 6 proven. 33 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-16 05:55:18,936 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 05:55:19,091 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 24 treesize of output 20 [2021-12-16 05:55:19,204 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 6 proven. 33 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-16 05:55:19,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1957604167] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 05:55:19,204 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 05:55:19,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2021-12-16 05:55:19,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772352055] [2021-12-16 05:55:19,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 05:55:19,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-16 05:55:19,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:55:19,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-16 05:55:19,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-12-16 05:55:19,206 INFO L87 Difference]: Start difference. First operand 95 states and 103 transitions. Second operand has 16 states, 16 states have (on average 7.25) internal successors, (116), 16 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) [2021-12-16 05:55:19,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:55:19,420 INFO L93 Difference]: Finished difference Result 116 states and 120 transitions. [2021-12-16 05:55:19,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-16 05:55:19,421 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.25) internal successors, (116), 16 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) Word has length 46 [2021-12-16 05:55:19,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:55:19,421 INFO L225 Difference]: With dead ends: 116 [2021-12-16 05:55:19,421 INFO L226 Difference]: Without dead ends: 116 [2021-12-16 05:55:19,422 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=128, Invalid=334, Unknown=0, NotChecked=0, Total=462 [2021-12-16 05:55:19,422 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 248 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 05:55:19,422 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [248 Valid, 127 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 05:55:19,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-12-16 05:55:19,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 99. [2021-12-16 05:55:19,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 95 states have (on average 1.1263157894736842) internal successors, (107), 98 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:55:19,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 107 transitions. [2021-12-16 05:55:19,425 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 107 transitions. Word has length 46 [2021-12-16 05:55:19,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:55:19,425 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 107 transitions. [2021-12-16 05:55:19,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.25) internal successors, (116), 16 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) [2021-12-16 05:55:19,425 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 107 transitions. [2021-12-16 05:55:19,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-16 05:55:19,425 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:55:19,425 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1] [2021-12-16 05:55:19,450 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-12-16 05:55:19,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-12-16 05:55:19,648 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION (and 5 more)] === [2021-12-16 05:55:19,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:55:19,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1258264466, now seen corresponding path program 2 times [2021-12-16 05:55:19,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:55:19,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087206916] [2021-12-16 05:55:19,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:55:19,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:55:19,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:55:19,721 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 2 proven. 48 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-12-16 05:55:19,721 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:55:19,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087206916] [2021-12-16 05:55:19,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087206916] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 05:55:19,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340588937] [2021-12-16 05:55:19,721 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-16 05:55:19,722 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 05:55:19,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 05:55:19,723 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 05:55:19,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-16 05:55:19,796 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-16 05:55:19,796 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 05:55:19,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-16 05:55:19,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 05:55:19,813 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-16 05:55:19,813 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 1 case distinctions, treesize of input 9 treesize of output 15 [2021-12-16 05:55:20,058 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 2 proven. 48 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-12-16 05:55:20,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 05:55:20,304 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-12-16 05:55:20,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340588937] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 05:55:20,304 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 05:55:20,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2021-12-16 05:55:20,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889075169] [2021-12-16 05:55:20,305 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 05:55:20,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-16 05:55:20,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:55:20,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-16 05:55:20,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-16 05:55:20,306 INFO L87 Difference]: Start difference. First operand 99 states and 107 transitions. Second operand has 11 states, 10 states have (on average 6.4) internal successors, (64), 11 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) [2021-12-16 05:55:20,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:55:20,354 INFO L93 Difference]: Finished difference Result 98 states and 105 transitions. [2021-12-16 05:55:20,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 05:55:20,354 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 6.4) internal successors, (64), 11 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) Word has length 52 [2021-12-16 05:55:20,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:55:20,355 INFO L225 Difference]: With dead ends: 98 [2021-12-16 05:55:20,355 INFO L226 Difference]: Without dead ends: 98 [2021-12-16 05:55:20,355 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-12-16 05:55:20,355 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 88 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 05:55:20,356 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 40 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 05:55:20,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-12-16 05:55:20,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 94. [2021-12-16 05:55:20,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 91 states have (on average 1.10989010989011) internal successors, (101), 93 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:55:20,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 101 transitions. [2021-12-16 05:55:20,359 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 101 transitions. Word has length 52 [2021-12-16 05:55:20,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:55:20,359 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 101 transitions. [2021-12-16 05:55:20,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 6.4) internal successors, (64), 11 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) [2021-12-16 05:55:20,360 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 101 transitions. [2021-12-16 05:55:20,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-16 05:55:20,362 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:55:20,362 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 05:55:20,385 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-12-16 05:55:20,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-12-16 05:55:20,575 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION (and 5 more)] === [2021-12-16 05:55:20,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:55:20,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1542665240, now seen corresponding path program 1 times [2021-12-16 05:55:20,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:55:20,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016170811] [2021-12-16 05:55:20,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:55:20,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:55:20,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:55:20,686 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 58 proven. 50 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-16 05:55:20,686 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:55:20,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016170811] [2021-12-16 05:55:20,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016170811] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 05:55:20,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529590774] [2021-12-16 05:55:20,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:55:20,687 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 05:55:20,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 05:55:20,688 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 05:55:20,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-16 05:55:20,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:55:20,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-16 05:55:20,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 05:55:20,950 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 59 proven. 49 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-16 05:55:20,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 05:55:21,085 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 59 proven. 49 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-16 05:55:21,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529590774] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 05:55:21,086 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 05:55:21,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2021-12-16 05:55:21,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160401492] [2021-12-16 05:55:21,086 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 05:55:21,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-16 05:55:21,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:55:21,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-16 05:55:21,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-12-16 05:55:21,087 INFO L87 Difference]: Start difference. First operand 94 states and 101 transitions. Second operand has 16 states, 16 states have (on average 5.6875) internal successors, (91), 16 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) [2021-12-16 05:55:21,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:55:21,307 INFO L93 Difference]: Finished difference Result 119 states and 123 transitions. [2021-12-16 05:55:21,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-16 05:55:21,307 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.6875) internal successors, (91), 16 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) Word has length 66 [2021-12-16 05:55:21,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:55:21,307 INFO L225 Difference]: With dead ends: 119 [2021-12-16 05:55:21,307 INFO L226 Difference]: Without dead ends: 119 [2021-12-16 05:55:21,308 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 124 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2021-12-16 05:55:21,308 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 85 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 05:55:21,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 137 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 05:55:21,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-12-16 05:55:21,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 104. [2021-12-16 05:55:21,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 101 states have (on average 1.099009900990099) internal successors, (111), 103 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:55:21,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 111 transitions. [2021-12-16 05:55:21,311 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 111 transitions. Word has length 66 [2021-12-16 05:55:21,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:55:21,311 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 111 transitions. [2021-12-16 05:55:21,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.6875) internal successors, (91), 16 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) [2021-12-16 05:55:21,311 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 111 transitions. [2021-12-16 05:55:21,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-12-16 05:55:21,312 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:55:21,312 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 05:55:21,336 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-12-16 05:55:21,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 05:55:21,527 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION (and 5 more)] === [2021-12-16 05:55:21,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:55:21,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1267590951, now seen corresponding path program 2 times [2021-12-16 05:55:21,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:55:21,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547166874] [2021-12-16 05:55:21,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:55:21,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:55:21,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:55:21,617 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-12-16 05:55:21,617 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:55:21,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547166874] [2021-12-16 05:55:21,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547166874] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 05:55:21,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934946519] [2021-12-16 05:55:21,617 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-16 05:55:21,617 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 05:55:21,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 05:55:21,618 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 05:55:21,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-16 05:55:21,668 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-16 05:55:21,669 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 05:55:21,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-16 05:55:21,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 05:55:22,200 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-12-16 05:55:22,200 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 05:55:22,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1934946519] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 05:55:22,200 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 05:55:22,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2021-12-16 05:55:22,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840731498] [2021-12-16 05:55:22,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 05:55:22,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 05:55:22,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:55:22,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 05:55:22,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-16 05:55:22,201 INFO L87 Difference]: Start difference. First operand 104 states and 111 transitions. Second operand has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 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) [2021-12-16 05:55:22,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:55:22,202 INFO L93 Difference]: Finished difference Result 105 states and 111 transitions. [2021-12-16 05:55:22,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 05:55:22,202 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 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 71 [2021-12-16 05:55:22,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:55:22,203 INFO L225 Difference]: With dead ends: 105 [2021-12-16 05:55:22,203 INFO L226 Difference]: Without dead ends: 103 [2021-12-16 05:55:22,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-16 05:55:22,204 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 1 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 13 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 05:55:22,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 35 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 13 Unchecked, 0.0s Time] [2021-12-16 05:55:22,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-12-16 05:55:22,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2021-12-16 05:55:22,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 100 states have (on average 1.07) internal successors, (107), 102 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:55:22,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 107 transitions. [2021-12-16 05:55:22,206 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 107 transitions. Word has length 71 [2021-12-16 05:55:22,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:55:22,206 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 107 transitions. [2021-12-16 05:55:22,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 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) [2021-12-16 05:55:22,206 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 107 transitions. [2021-12-16 05:55:22,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-12-16 05:55:22,207 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:55:22,207 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1] [2021-12-16 05:55:22,225 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-12-16 05:55:22,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 05:55:22,415 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION (and 5 more)] === [2021-12-16 05:55:22,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:55:22,416 INFO L85 PathProgramCache]: Analyzing trace with hash -640491314, now seen corresponding path program 3 times [2021-12-16 05:55:22,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:55:22,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297999814] [2021-12-16 05:55:22,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:55:22,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:55:22,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:55:22,498 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-16 05:55:22,498 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:55:22,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297999814] [2021-12-16 05:55:22,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297999814] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 05:55:22,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733879819] [2021-12-16 05:55:22,499 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-16 05:55:22,499 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 05:55:22,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 05:55:22,500 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 05:55:22,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-12-16 05:55:22,576 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-12-16 05:55:22,576 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 05:55:22,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-16 05:55:22,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 05:55:22,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 05:55:22,588 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 9 treesize of output 11 [2021-12-16 05:55:22,590 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-12-16 05:55:22,913 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-12-16 05:55:22,913 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 05:55:22,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1733879819] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 05:55:22,915 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 05:55:22,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 11 [2021-12-16 05:55:22,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323082831] [2021-12-16 05:55:22,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 05:55:22,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 05:55:22,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:55:22,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 05:55:22,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-12-16 05:55:22,917 INFO L87 Difference]: Start difference. First operand 103 states and 107 transitions. Second operand has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 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) [2021-12-16 05:55:22,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:55:22,946 INFO L93 Difference]: Finished difference Result 101 states and 104 transitions. [2021-12-16 05:55:22,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 05:55:22,946 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 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 72 [2021-12-16 05:55:22,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:55:22,947 INFO L225 Difference]: With dead ends: 101 [2021-12-16 05:55:22,947 INFO L226 Difference]: Without dead ends: 101 [2021-12-16 05:55:22,947 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-12-16 05:55:22,948 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 41 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 05:55:22,948 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 22 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 05:55:22,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-12-16 05:55:22,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 82. [2021-12-16 05:55:22,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.037037037037037) internal successors, (84), 81 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) [2021-12-16 05:55:22,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 84 transitions. [2021-12-16 05:55:22,950 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 84 transitions. Word has length 72 [2021-12-16 05:55:22,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:55:22,950 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 84 transitions. [2021-12-16 05:55:22,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 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) [2021-12-16 05:55:22,950 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 84 transitions. [2021-12-16 05:55:22,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-12-16 05:55:22,951 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:55:22,951 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 05:55:22,975 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-12-16 05:55:23,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 05:55:23,173 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION (and 5 more)] === [2021-12-16 05:55:23,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:55:23,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1746186495, now seen corresponding path program 1 times [2021-12-16 05:55:23,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:55:23,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002711679] [2021-12-16 05:55:23,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:55:23,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:55:23,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:55:23,260 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2021-12-16 05:55:23,261 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:55:23,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002711679] [2021-12-16 05:55:23,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002711679] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 05:55:23,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923343373] [2021-12-16 05:55:23,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:55:23,261 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 05:55:23,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 05:55:23,263 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 05:55:23,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-12-16 05:55:23,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:55:23,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 22 conjunts are in the unsatisfiable core [2021-12-16 05:55:23,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 05:55:23,938 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2021-12-16 05:55:23,938 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 05:55:23,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1923343373] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 05:55:23,938 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 05:55:23,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2021-12-16 05:55:23,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699215078] [2021-12-16 05:55:23,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 05:55:23,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 05:55:23,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:55:23,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 05:55:23,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-16 05:55:23,940 INFO L87 Difference]: Start difference. First operand 82 states and 84 transitions. Second operand has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 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) [2021-12-16 05:55:23,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:55:23,940 INFO L93 Difference]: Finished difference Result 81 states and 83 transitions. [2021-12-16 05:55:23,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 05:55:23,940 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 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 81 [2021-12-16 05:55:23,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:55:23,941 INFO L225 Difference]: With dead ends: 81 [2021-12-16 05:55:23,941 INFO L226 Difference]: Without dead ends: 0 [2021-12-16 05:55:23,941 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-16 05:55:23,942 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 8 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 05:55:23,946 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 8 Unchecked, 0.0s Time] [2021-12-16 05:55:23,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-16 05:55:23,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-16 05:55:23,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:55:23,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-16 05:55:23,946 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 81 [2021-12-16 05:55:23,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:55:23,946 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-16 05:55:23,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 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) [2021-12-16 05:55:23,947 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-16 05:55:23,947 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-16 05:55:23,949 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX (7 of 8 remaining) [2021-12-16 05:55:23,950 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATION (6 of 8 remaining) [2021-12-16 05:55:23,950 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATION (5 of 8 remaining) [2021-12-16 05:55:23,950 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATION (4 of 8 remaining) [2021-12-16 05:55:23,950 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATION (3 of 8 remaining) [2021-12-16 05:55:23,950 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATION (2 of 8 remaining) [2021-12-16 05:55:23,950 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATION (1 of 8 remaining) [2021-12-16 05:55:23,950 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (0 of 8 remaining) [2021-12-16 05:55:23,976 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-12-16 05:55:24,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 05:55:24,166 INFO L732 BasicCegarLoop]: Path program histogram: [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 05:55:24,167 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-16 05:55:24,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 05:55:24 BoogieIcfgContainer [2021-12-16 05:55:24,169 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-16 05:55:24,169 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-16 05:55:24,169 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-16 05:55:24,169 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-16 05:55:24,169 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 05:55:02" (3/4) ... [2021-12-16 05:55:24,171 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-16 05:55:24,178 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2021-12-16 05:55:24,178 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-12-16 05:55:24,178 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-16 05:55:24,178 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-16 05:55:24,205 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-16 05:55:24,206 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-16 05:55:24,206 INFO L158 Benchmark]: Toolchain (without parser) took 21839.00ms. Allocated memory was 96.5MB in the beginning and 146.8MB in the end (delta: 50.3MB). Free memory was 66.4MB in the beginning and 80.4MB in the end (delta: -14.0MB). Peak memory consumption was 35.3MB. Max. memory is 16.1GB. [2021-12-16 05:55:24,207 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 96.5MB. Free memory was 56.0MB in the beginning and 55.9MB in the end (delta: 69.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 05:55:24,207 INFO L158 Benchmark]: CACSL2BoogieTranslator took 190.12ms. Allocated memory is still 96.5MB. Free memory was 66.2MB in the beginning and 73.6MB in the end (delta: -7.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-16 05:55:24,211 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.19ms. Allocated memory is still 96.5MB. Free memory was 73.6MB in the beginning and 72.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-16 05:55:24,211 INFO L158 Benchmark]: Boogie Preprocessor took 17.33ms. Allocated memory is still 96.5MB. Free memory was 71.9MB in the beginning and 71.1MB in the end (delta: 808.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 05:55:24,212 INFO L158 Benchmark]: RCFGBuilder took 242.44ms. Allocated memory is still 96.5MB. Free memory was 70.7MB in the beginning and 60.3MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-16 05:55:24,212 INFO L158 Benchmark]: TraceAbstraction took 21309.94ms. Allocated memory was 96.5MB in the beginning and 146.8MB in the end (delta: 50.3MB). Free memory was 59.7MB in the beginning and 83.4MB in the end (delta: -23.7MB). Peak memory consumption was 27.9MB. Max. memory is 16.1GB. [2021-12-16 05:55:24,212 INFO L158 Benchmark]: Witness Printer took 36.68ms. Allocated memory is still 146.8MB. Free memory was 83.4MB in the beginning and 80.4MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-16 05:55:24,214 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 96.5MB. Free memory was 56.0MB in the beginning and 55.9MB in the end (delta: 69.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 190.12ms. Allocated memory is still 96.5MB. Free memory was 66.2MB in the beginning and 73.6MB in the end (delta: -7.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.19ms. Allocated memory is still 96.5MB. Free memory was 73.6MB in the beginning and 72.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 17.33ms. Allocated memory is still 96.5MB. Free memory was 71.9MB in the beginning and 71.1MB in the end (delta: 808.3kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 242.44ms. Allocated memory is still 96.5MB. Free memory was 70.7MB in the beginning and 60.3MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 21309.94ms. Allocated memory was 96.5MB in the beginning and 146.8MB in the end (delta: 50.3MB). Free memory was 59.7MB in the beginning and 83.4MB in the end (delta: -23.7MB). Peak memory consumption was 27.9MB. Max. memory is 16.1GB. * Witness Printer took 36.68ms. Allocated memory is still 146.8MB. Free memory was 83.4MB in the beginning and 80.4MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 16]: array index is always in bounds For all program executions holds that array index is always in bounds at this location - PositiveResult [Line: 16]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 16]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 27]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 27]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 30]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 30]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 21]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 31 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 21.3s, OverallIterations: 21, TraceHistogramMax: 6, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 7.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2909 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2909 mSDsluCounter, 1373 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 66 IncrementalHoareTripleChecker+Unchecked, 973 mSDsCounter, 493 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2305 IncrementalHoareTripleChecker+Invalid, 2864 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 493 mSolverCounterUnsat, 400 mSDtfsCounter, 2305 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1206 GetRequests, 935 SyntacticMatches, 11 SemanticMatches, 260 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1245 ImplicationChecksByTransitivity, 8.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=104occurred in iteration=18, InterpolantAutomatonStates: 188, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 21 MinimizatonAttempts, 547 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 8.6s InterpolantComputationTime, 1283 NumberOfCodeBlocks, 1120 NumberOfCodeBlocksAsserted, 41 NumberOfCheckSat, 1633 ConstructedInterpolants, 160 QuantifiedInterpolants, 13155 SizeOfPredicates, 76 NumberOfNonLiveVariables, 2368 ConjunctsInSsa, 227 ConjunctsInUnsatCore, 52 InterpolantComputations, 7 PerfectInterpolantSequences, 1185/2186 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-12-16 05:55:24,229 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 Writing output log to file Ultimate.log Result: TRUE