/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-buckets-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 17:45:21,726 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 17:45:21,728 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 17:45:21,779 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 17:45:21,780 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 17:45:21,782 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 17:45:21,785 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 17:45:21,791 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 17:45:21,793 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 17:45:21,800 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 17:45:21,800 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 17:45:21,802 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 17:45:21,802 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 17:45:21,804 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 17:45:21,807 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 17:45:21,810 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 17:45:21,811 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 17:45:21,812 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 17:45:21,814 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 17:45:21,819 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 17:45:21,820 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 17:45:21,822 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 17:45:21,824 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 17:45:21,825 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 17:45:21,832 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 17:45:21,838 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 17:45:21,838 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 17:45:21,839 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 17:45:21,842 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 17:45:21,875 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 17:45:21,881 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 17:45:21,882 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 17:45:21,882 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 17:45:21,883 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 17:45:21,884 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 17:45:21,884 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 17:45:21,884 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 17:45:21,884 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 17:45:21,884 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 17:45:21,885 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 17:45:21,885 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 17:45:21,886 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 17:45:21,886 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 17:45:21,886 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 17:45:21,886 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 17:45:21,886 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 17:45:21,886 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 17:45:21,886 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 17:45:21,886 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 17:45:21,887 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 17:45:21,887 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 17:45:21,887 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 17:45:21,887 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 17:45:21,887 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 17:45:21,887 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 17:45:21,887 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 17:45:21,888 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 17:45:21,888 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 17:45:21,888 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 17:45:21,888 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 17:45:21,888 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 17:45:21,889 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 17:45:21,889 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 17:45:22,097 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 17:45:22,117 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 17:45:22,119 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 17:45:22,120 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 17:45:22,120 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 17:45:22,122 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-buckets-1.i [2022-01-10 17:45:22,187 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bac00df8/c5f7b2dbb41342df937fae346c9c0590/FLAG0e00de466 [2022-01-10 17:45:22,647 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 17:45:22,647 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-buckets-1.i [2022-01-10 17:45:22,672 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bac00df8/c5f7b2dbb41342df937fae346c9c0590/FLAG0e00de466 [2022-01-10 17:45:23,017 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bac00df8/c5f7b2dbb41342df937fae346c9c0590 [2022-01-10 17:45:23,019 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 17:45:23,021 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 17:45:23,022 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 17:45:23,022 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 17:45:23,024 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 17:45:23,025 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:45:23" (1/1) ... [2022-01-10 17:45:23,026 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d73fe1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:45:23, skipping insertion in model container [2022-01-10 17:45:23,026 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:45:23" (1/1) ... [2022-01-10 17:45:23,032 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 17:45:23,066 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 17:45:23,397 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-buckets-1.i[22663,22676] [2022-01-10 17:45:23,401 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-buckets-1.i[22734,22747] [2022-01-10 17:45:23,402 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-buckets-1.i[22862,22875] [2022-01-10 17:45:23,405 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-buckets-1.i[23275,23288] [2022-01-10 17:45:23,406 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-buckets-1.i[23364,23377] [2022-01-10 17:45:23,418 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 17:45:23,431 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 17:45:23,467 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-buckets-1.i[22663,22676] [2022-01-10 17:45:23,468 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-buckets-1.i[22734,22747] [2022-01-10 17:45:23,469 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-buckets-1.i[22862,22875] [2022-01-10 17:45:23,472 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-buckets-1.i[23275,23288] [2022-01-10 17:45:23,472 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-buckets-1.i[23364,23377] [2022-01-10 17:45:23,474 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 17:45:23,496 INFO L208 MainTranslator]: Completed translation [2022-01-10 17:45:23,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:45:23 WrapperNode [2022-01-10 17:45:23,497 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 17:45:23,498 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 17:45:23,498 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 17:45:23,498 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 17:45:23,505 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:45:23" (1/1) ... [2022-01-10 17:45:23,520 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:45:23" (1/1) ... [2022-01-10 17:45:23,544 INFO L137 Inliner]: procedures = 122, calls = 42, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 153 [2022-01-10 17:45:23,545 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 17:45:23,545 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 17:45:23,545 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 17:45:23,546 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 17:45:23,551 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:45:23" (1/1) ... [2022-01-10 17:45:23,552 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:45:23" (1/1) ... [2022-01-10 17:45:23,557 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:45:23" (1/1) ... [2022-01-10 17:45:23,557 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:45:23" (1/1) ... [2022-01-10 17:45:23,566 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:45:23" (1/1) ... [2022-01-10 17:45:23,570 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:45:23" (1/1) ... [2022-01-10 17:45:23,573 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:45:23" (1/1) ... [2022-01-10 17:45:23,576 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 17:45:23,577 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 17:45:23,577 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 17:45:23,577 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 17:45:23,578 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:45:23" (1/1) ... [2022-01-10 17:45:23,591 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 17:45:23,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 17:45:23,619 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) [2022-01-10 17:45:23,623 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 [2022-01-10 17:45:23,656 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-01-10 17:45:23,656 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-10 17:45:23,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 17:45:23,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-01-10 17:45:23,657 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-01-10 17:45:23,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-10 17:45:23,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-01-10 17:45:23,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 17:45:23,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 17:45:23,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 17:45:23,751 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 17:45:23,752 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 17:45:26,165 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 17:45:26,170 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 17:45:26,171 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2022-01-10 17:45:26,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:45:26 BoogieIcfgContainer [2022-01-10 17:45:26,173 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 17:45:26,174 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 17:45:26,174 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 17:45:26,175 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 17:45:26,178 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:45:26" (1/1) ... [2022-01-10 17:45:26,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 05:45:26 BasicIcfg [2022-01-10 17:45:26,261 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 17:45:26,263 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 17:45:26,263 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 17:45:26,266 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 17:45:26,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 05:45:23" (1/4) ... [2022-01-10 17:45:26,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43687203 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:45:26, skipping insertion in model container [2022-01-10 17:45:26,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:45:23" (2/4) ... [2022-01-10 17:45:26,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43687203 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:45:26, skipping insertion in model container [2022-01-10 17:45:26,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:45:26" (3/4) ... [2022-01-10 17:45:26,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43687203 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 05:45:26, skipping insertion in model container [2022-01-10 17:45:26,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 05:45:26" (4/4) ... [2022-01-10 17:45:26,268 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-buckets-1.iTransformedIcfg [2022-01-10 17:45:26,273 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 17:45:26,274 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2022-01-10 17:45:26,308 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 17:45:26,314 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 17:45:26,314 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-01-10 17:45:26,329 INFO L276 IsEmpty]: Start isEmpty. Operand has 43 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 42 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:45:26,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-01-10 17:45:26,334 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:45:26,335 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:45:26,335 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:45:26,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:45:26,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1569803515, now seen corresponding path program 1 times [2022-01-10 17:45:26,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:45:26,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196176667] [2022-01-10 17:45:26,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:45:26,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:45:26,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:45:26,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:45:26,720 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:45:26,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196176667] [2022-01-10 17:45:26,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196176667] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:45:26,722 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:45:26,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 17:45:26,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098953948] [2022-01-10 17:45:26,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:45:26,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 17:45:26,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:45:26,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 17:45:26,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 17:45:26,764 INFO L87 Difference]: Start difference. First operand has 43 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 42 states have internal predecessors, (70), 0 states have call successors, (0), 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 1.75) 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) [2022-01-10 17:45:26,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:45:26,928 INFO L93 Difference]: Finished difference Result 109 states and 185 transitions. [2022-01-10 17:45:26,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 17:45:26,932 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) 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 [2022-01-10 17:45:26,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:45:26,941 INFO L225 Difference]: With dead ends: 109 [2022-01-10 17:45:26,942 INFO L226 Difference]: Without dead ends: 64 [2022-01-10 17:45:26,952 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 17:45:26,956 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 90 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 17:45:26,959 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 82 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 17:45:26,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-01-10 17:45:26,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 40. [2022-01-10 17:45:26,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 36 states have (on average 1.3333333333333333) internal successors, (48), 39 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) [2022-01-10 17:45:26,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2022-01-10 17:45:26,997 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 7 [2022-01-10 17:45:26,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:45:26,998 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2022-01-10 17:45:26,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) 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) [2022-01-10 17:45:26,998 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2022-01-10 17:45:26,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-01-10 17:45:26,999 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:45:26,999 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:45:26,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 17:45:26,999 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:45:27,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:45:27,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1448854057, now seen corresponding path program 1 times [2022-01-10 17:45:27,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:45:27,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505973686] [2022-01-10 17:45:27,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:45:27,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:45:27,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:45:27,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:45:27,166 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:45:27,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505973686] [2022-01-10 17:45:27,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505973686] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:45:27,166 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:45:27,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:45:27,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22728466] [2022-01-10 17:45:27,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:45:27,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:45:27,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:45:27,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:45:27,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:45:27,169 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:45:27,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:45:27,232 INFO L93 Difference]: Finished difference Result 43 states and 52 transitions. [2022-01-10 17:45:27,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:45:27,233 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2022-01-10 17:45:27,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:45:27,234 INFO L225 Difference]: With dead ends: 43 [2022-01-10 17:45:27,235 INFO L226 Difference]: Without dead ends: 41 [2022-01-10 17:45:27,236 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:45:27,239 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 6 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:45:27,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 66 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:45:27,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-01-10 17:45:27,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38. [2022-01-10 17:45:27,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 35 states have (on average 1.3142857142857143) internal successors, (46), 37 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) [2022-01-10 17:45:27,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2022-01-10 17:45:27,255 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 8 [2022-01-10 17:45:27,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:45:27,256 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2022-01-10 17:45:27,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:45:27,256 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2022-01-10 17:45:27,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-01-10 17:45:27,257 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:45:27,257 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:45:27,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 17:45:27,258 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:45:27,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:45:27,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1964770742, now seen corresponding path program 1 times [2022-01-10 17:45:27,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:45:27,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132097880] [2022-01-10 17:45:27,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:45:27,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:45:27,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:45:27,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:45:27,762 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:45:27,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132097880] [2022-01-10 17:45:27,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132097880] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:45:27,762 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:45:27,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 17:45:27,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404855187] [2022-01-10 17:45:27,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:45:27,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 17:45:27,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:45:27,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 17:45:27,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 17:45:27,764 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:45:28,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:45:28,180 INFO L93 Difference]: Finished difference Result 69 states and 83 transitions. [2022-01-10 17:45:28,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 17:45:28,180 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-01-10 17:45:28,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:45:28,182 INFO L225 Difference]: With dead ends: 69 [2022-01-10 17:45:28,182 INFO L226 Difference]: Without dead ends: 58 [2022-01-10 17:45:28,183 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-01-10 17:45:28,184 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 55 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 17:45:28,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 131 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 17:45:28,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-01-10 17:45:28,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 42. [2022-01-10 17:45:28,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 39 states have (on average 1.3076923076923077) internal successors, (51), 41 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:45:28,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 51 transitions. [2022-01-10 17:45:28,191 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 51 transitions. Word has length 9 [2022-01-10 17:45:28,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:45:28,194 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 51 transitions. [2022-01-10 17:45:28,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:45:28,194 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 51 transitions. [2022-01-10 17:45:28,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-01-10 17:45:28,195 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:45:28,195 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:45:28,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 17:45:28,195 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:45:28,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:45:28,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1047618665, now seen corresponding path program 1 times [2022-01-10 17:45:28,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:45:28,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038456589] [2022-01-10 17:45:28,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:45:28,198 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:45:28,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:45:28,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:45:28,272 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:45:28,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038456589] [2022-01-10 17:45:28,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038456589] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:45:28,273 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:45:28,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:45:28,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20463293] [2022-01-10 17:45:28,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:45:28,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:45:28,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:45:28,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:45:28,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:45:28,277 INFO L87 Difference]: Start difference. First operand 42 states and 51 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:45:28,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:45:28,405 INFO L93 Difference]: Finished difference Result 43 states and 52 transitions. [2022-01-10 17:45:28,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:45:28,407 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-01-10 17:45:28,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:45:28,408 INFO L225 Difference]: With dead ends: 43 [2022-01-10 17:45:28,408 INFO L226 Difference]: Without dead ends: 41 [2022-01-10 17:45:28,408 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:45:28,409 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 21 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 17:45:28,409 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 48 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 17:45:28,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-01-10 17:45:28,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2022-01-10 17:45:28,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 38 states have (on average 1.2894736842105263) internal successors, (49), 39 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:45:28,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 49 transitions. [2022-01-10 17:45:28,415 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 49 transitions. Word has length 9 [2022-01-10 17:45:28,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:45:28,415 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 49 transitions. [2022-01-10 17:45:28,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:45:28,415 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 49 transitions. [2022-01-10 17:45:28,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-10 17:45:28,415 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:45:28,416 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:45:28,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 17:45:28,416 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:45:28,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:45:28,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1908180240, now seen corresponding path program 1 times [2022-01-10 17:45:28,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:45:28,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736819525] [2022-01-10 17:45:28,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:45:28,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:45:28,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:45:28,934 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:45:28,935 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:45:28,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736819525] [2022-01-10 17:45:28,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736819525] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 17:45:28,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033263603] [2022-01-10 17:45:28,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:45:28,936 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 17:45:28,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 17:45:28,943 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) [2022-01-10 17:45:28,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 17:45:29,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:45:29,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 87 conjunts are in the unsatisfiable core [2022-01-10 17:45:29,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 17:45:29,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:45:29,336 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 40 [2022-01-10 17:45:29,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:45:29,367 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 44 [2022-01-10 17:45:29,432 INFO L353 Elim1Store]: treesize reduction 54, result has 31.6 percent of original size [2022-01-10 17:45:29,432 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 71 treesize of output 80 [2022-01-10 17:45:29,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:45:29,498 INFO L353 Elim1Store]: treesize reduction 36, result has 44.6 percent of original size [2022-01-10 17:45:29,498 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 54 [2022-01-10 17:45:29,513 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 24 [2022-01-10 17:45:29,535 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 15 [2022-01-10 17:45:29,563 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-01-10 17:45:29,581 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 24 [2022-01-10 17:45:29,602 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 19 [2022-01-10 17:45:29,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:45:29,668 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-01-10 17:45:29,751 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 34 [2022-01-10 17:45:29,931 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 39 [2022-01-10 17:45:30,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:45:30,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:45:30,772 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 17:45:30,773 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 17:45:31,084 INFO L353 Elim1Store]: treesize reduction 188, result has 25.7 percent of original size [2022-01-10 17:45:31,085 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 1 disjoint index pairs (out of 45 index pairs), introduced 13 new quantified variables, introduced 48 case distinctions, treesize of input 210 treesize of output 206 [2022-01-10 17:45:31,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:45:31,097 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 17:45:31,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:45:31,100 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 17:45:31,190 INFO L353 Elim1Store]: treesize reduction 144, result has 13.3 percent of original size [2022-01-10 17:45:31,190 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 31 case distinctions, treesize of input 239 treesize of output 248 [2022-01-10 17:45:36,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:45:36,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:45:36,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:45:36,993 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 17:45:36,994 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 17:45:36,995 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 17:45:37,133 INFO L353 Elim1Store]: treesize reduction 48, result has 65.7 percent of original size [2022-01-10 17:45:37,133 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 3 disjoint index pairs (out of 45 index pairs), introduced 13 new quantified variables, introduced 39 case distinctions, treesize of input 222 treesize of output 202 [2022-01-10 17:45:37,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:45:37,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:45:37,157 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 17:45:37,158 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 17:45:37,240 INFO L353 Elim1Store]: treesize reduction 37, result has 58.4 percent of original size [2022-01-10 17:45:37,240 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 6 disjoint index pairs (out of 36 index pairs), introduced 10 new quantified variables, introduced 16 case distinctions, treesize of input 110 treesize of output 120 [2022-01-10 17:45:38,381 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:45:38,382 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 17:45:39,015 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:45:39,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033263603] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 17:45:39,016 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 17:45:39,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 17 [2022-01-10 17:45:39,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206411255] [2022-01-10 17:45:39,018 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 17:45:39,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-10 17:45:39,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:45:39,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-10 17:45:39,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2022-01-10 17:45:39,024 INFO L87 Difference]: Start difference. First operand 40 states and 49 transitions. Second operand has 17 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 17 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:45:40,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:45:40,008 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2022-01-10 17:45:40,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 17:45:40,009 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 17 states have internal predecessors, (32), 0 states have call successors, (0), 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 [2022-01-10 17:45:40,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:45:40,009 INFO L225 Difference]: With dead ends: 58 [2022-01-10 17:45:40,009 INFO L226 Difference]: Without dead ends: 47 [2022-01-10 17:45:40,010 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=106, Invalid=356, Unknown=0, NotChecked=0, Total=462 [2022-01-10 17:45:40,010 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 24 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 32 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 17:45:40,011 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 160 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 93 Invalid, 0 Unknown, 32 Unchecked, 0.2s Time] [2022-01-10 17:45:40,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-01-10 17:45:40,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2022-01-10 17:45:40,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 43 states have (on average 1.255813953488372) internal successors, (54), 44 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:45:40,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2022-01-10 17:45:40,018 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 14 [2022-01-10 17:45:40,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:45:40,018 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2022-01-10 17:45:40,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 17 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:45:40,018 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2022-01-10 17:45:40,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-10 17:45:40,019 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:45:40,019 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:45:40,039 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-10 17:45:40,223 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 [2022-01-10 17:45:40,224 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:45:40,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:45:40,224 INFO L85 PathProgramCache]: Analyzing trace with hash -732414666, now seen corresponding path program 1 times [2022-01-10 17:45:40,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:45:40,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705129876] [2022-01-10 17:45:40,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:45:40,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:45:40,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:45:40,392 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:45:40,392 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:45:40,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705129876] [2022-01-10 17:45:40,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705129876] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 17:45:40,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457657706] [2022-01-10 17:45:40,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:45:40,393 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 17:45:40,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 17:45:40,394 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) [2022-01-10 17:45:40,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-10 17:45:40,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:45:40,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 49 conjunts are in the unsatisfiable core [2022-01-10 17:45:40,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 17:45:40,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:45:40,610 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 34 [2022-01-10 17:45:40,647 INFO L353 Elim1Store]: treesize reduction 50, result has 25.4 percent of original size [2022-01-10 17:45:40,648 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 88 treesize of output 85 [2022-01-10 17:45:40,692 INFO L353 Elim1Store]: treesize reduction 76, result has 16.5 percent of original size [2022-01-10 17:45:40,693 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 84 treesize of output 77 [2022-01-10 17:45:40,712 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 23 [2022-01-10 17:45:40,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:45:40,810 INFO L353 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-01-10 17:45:40,810 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 88 treesize of output 66 [2022-01-10 17:45:40,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:45:40,841 INFO L353 Elim1Store]: treesize reduction 12, result has 67.6 percent of original size [2022-01-10 17:45:40,841 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 40 [2022-01-10 17:45:40,940 INFO L353 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-01-10 17:45:40,941 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 86 treesize of output 64 [2022-01-10 17:45:41,222 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 17:45:41,223 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 17:45:41,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:45:41,239 INFO L353 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2022-01-10 17:45:41,240 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 33 [2022-01-10 17:45:41,259 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:45:41,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 17:45:41,415 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_678 (Array Int Int)) (|v_ULTIMATE.start_ULTIMATE.start_main_~bcki~0#1.offsetInt_7| Int)) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.baseInt| |c_ULTIMATE.start_ULTIMATE.start_main_~item~0#1.baseInt| v_ArrVal_678) |c_ULTIMATE.start_ULTIMATE.start_main_~bucket~0#1.baseInt|) |v_ULTIMATE.start_ULTIMATE.start_main_~bcki~0#1.offsetInt_7|))) (or (not (<= 0 |v_ULTIMATE.start_ULTIMATE.start_main_~bcki~0#1.offsetInt_7|)) (not (<= 0 .cse0)) (<= 1 .cse0) (not (<= |v_ULTIMATE.start_ULTIMATE.start_main_~bcki~0#1.offsetInt_7| |c_ULTIMATE.start_ULTIMATE.start_main_~bucket~0#1.offsetInt|))))) is different from false [2022-01-10 17:45:41,487 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_ULTIMATE.start_main_~item~0#1.baseInt_6| Int) (v_ArrVal_678 (Array Int Int)) (|v_ULTIMATE.start_ULTIMATE.start_main_~bcki~0#1.offsetInt_7| Int)) (let ((.cse0 (select |c_#validInt| |v_ULTIMATE.start_ULTIMATE.start_main_~item~0#1.baseInt_6|)) (.cse1 (select (select (store |c_#memory_$Pointer$.baseInt| |v_ULTIMATE.start_ULTIMATE.start_main_~item~0#1.baseInt_6| v_ArrVal_678) |c_ULTIMATE.start_ULTIMATE.start_main_~bucket~0#1.baseInt|) |v_ULTIMATE.start_ULTIMATE.start_main_~bcki~0#1.offsetInt_7|))) (or (not (<= 0 .cse0)) (<= 1 .cse1) (not (<= 0 |v_ULTIMATE.start_ULTIMATE.start_main_~bcki~0#1.offsetInt_7|)) (not (<= .cse0 0)) (not (<= 0 .cse1)) (not (<= |v_ULTIMATE.start_ULTIMATE.start_main_~bcki~0#1.offsetInt_7| |c_ULTIMATE.start_ULTIMATE.start_main_~bucket~0#1.offsetInt|))))) is different from false [2022-01-10 17:45:41,565 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:45:41,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457657706] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 17:45:41,566 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 17:45:41,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 14 [2022-01-10 17:45:41,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717152562] [2022-01-10 17:45:41,566 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 17:45:41,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-10 17:45:41,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:45:41,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-10 17:45:41,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=101, Unknown=2, NotChecked=42, Total=182 [2022-01-10 17:45:41,567 INFO L87 Difference]: Start difference. First operand 45 states and 54 transitions. Second operand has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 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) [2022-01-10 17:45:41,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:45:41,998 INFO L93 Difference]: Finished difference Result 71 states and 89 transitions. [2022-01-10 17:45:41,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 17:45:41,998 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-01-10 17:45:41,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:45:42,001 INFO L225 Difference]: With dead ends: 71 [2022-01-10 17:45:42,002 INFO L226 Difference]: Without dead ends: 69 [2022-01-10 17:45:42,002 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=67, Invalid=149, Unknown=2, NotChecked=54, Total=272 [2022-01-10 17:45:42,003 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 28 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 176 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 17:45:42,003 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 244 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 117 Invalid, 0 Unknown, 176 Unchecked, 0.2s Time] [2022-01-10 17:45:42,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-01-10 17:45:42,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 54. [2022-01-10 17:45:42,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 52 states have (on average 1.2692307692307692) internal successors, (66), 53 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:45:42,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 66 transitions. [2022-01-10 17:45:42,010 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 66 transitions. Word has length 15 [2022-01-10 17:45:42,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:45:42,010 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 66 transitions. [2022-01-10 17:45:42,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 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) [2022-01-10 17:45:42,010 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 66 transitions. [2022-01-10 17:45:42,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-10 17:45:42,011 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:45:42,011 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:45:42,037 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-10 17:45:42,211 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 [2022-01-10 17:45:42,212 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:45:42,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:45:42,212 INFO L85 PathProgramCache]: Analyzing trace with hash 524772707, now seen corresponding path program 2 times [2022-01-10 17:45:42,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:45:42,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415201862] [2022-01-10 17:45:42,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:45:42,213 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:45:42,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:45:42,577 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 17:45:42,578 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:45:42,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415201862] [2022-01-10 17:45:42,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415201862] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:45:42,578 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:45:42,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 17:45:42,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845946119] [2022-01-10 17:45:42,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:45:42,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 17:45:42,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:45:42,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 17:45:42,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-01-10 17:45:42,579 INFO L87 Difference]: Start difference. First operand 54 states and 66 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:45:43,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:45:43,367 INFO L93 Difference]: Finished difference Result 133 states and 164 transitions. [2022-01-10 17:45:43,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 17:45:43,368 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-10 17:45:43,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:45:43,369 INFO L225 Difference]: With dead ends: 133 [2022-01-10 17:45:43,369 INFO L226 Difference]: Without dead ends: 99 [2022-01-10 17:45:43,369 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-01-10 17:45:43,370 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 74 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 17:45:43,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 149 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 17:45:43,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-01-10 17:45:43,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 67. [2022-01-10 17:45:43,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 65 states have (on average 1.2615384615384615) internal successors, (82), 66 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:45:43,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 82 transitions. [2022-01-10 17:45:43,380 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 82 transitions. Word has length 17 [2022-01-10 17:45:43,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:45:43,381 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 82 transitions. [2022-01-10 17:45:43,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:45:43,381 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 82 transitions. [2022-01-10 17:45:43,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-10 17:45:43,382 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:45:43,382 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:45:43,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 17:45:43,382 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:45:43,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:45:43,383 INFO L85 PathProgramCache]: Analyzing trace with hash -899466644, now seen corresponding path program 1 times [2022-01-10 17:45:43,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:45:43,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470041907] [2022-01-10 17:45:43,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:45:43,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:45:43,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:45:43,686 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:45:43,686 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:45:43,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470041907] [2022-01-10 17:45:43,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470041907] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 17:45:43,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096637239] [2022-01-10 17:45:43,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:45:43,687 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 17:45:43,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 17:45:43,692 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) [2022-01-10 17:45:43,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-10 17:45:43,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:45:43,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 66 conjunts are in the unsatisfiable core [2022-01-10 17:45:43,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 17:45:43,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:45:43,896 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 34 [2022-01-10 17:45:43,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:45:43,907 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 32 [2022-01-10 17:45:43,946 INFO L353 Elim1Store]: treesize reduction 50, result has 25.4 percent of original size [2022-01-10 17:45:43,946 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 78 treesize of output 77 [2022-01-10 17:45:43,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:45:43,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:45:43,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:45:43,959 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2022-01-10 17:45:44,010 INFO L353 Elim1Store]: treesize reduction 76, result has 16.5 percent of original size [2022-01-10 17:45:44,010 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 53 treesize of output 48 [2022-01-10 17:45:44,025 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 23 [2022-01-10 17:45:44,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:45:44,142 INFO L353 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-01-10 17:45:44,142 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 67 treesize of output 53 [2022-01-10 17:45:44,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:45:44,163 INFO L353 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2022-01-10 17:45:44,163 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 25 [2022-01-10 17:45:44,186 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 25 [2022-01-10 17:45:44,320 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 25 [2022-01-10 17:45:44,340 INFO L353 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-01-10 17:45:44,341 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 66 treesize of output 52 [2022-01-10 17:45:44,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:45:44,712 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 17:45:44,712 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2022-01-10 17:45:44,930 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 17:45:44,931 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 17:45:44,954 INFO L353 Elim1Store]: treesize reduction 33, result has 25.0 percent of original size [2022-01-10 17:45:44,955 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 63 treesize of output 35 [2022-01-10 17:45:44,979 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:45:44,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 17:45:45,125 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_951 (Array Int Int)) (|v_ULTIMATE.start_ULTIMATE.start_main_~bcki~0#1.offsetInt_13| Int) (v_ArrVal_950 (Array Int Int))) (or (not (<= 0 |v_ULTIMATE.start_ULTIMATE.start_main_~bcki~0#1.offsetInt_13|)) (not (= (select (let ((.cse0 (store |c_#memory_$Pointer$.baseInt| |c_ULTIMATE.start_ULTIMATE.start_main_~item~0#1.baseInt| v_ArrVal_951))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_ULTIMATE.start_main_~bucket~0#1.baseInt|) |v_ULTIMATE.start_ULTIMATE.start_main_~bcki~0#1.offsetInt_13|))) (select (select (store |c_#memory_$Pointer$.offsetInt| |c_ULTIMATE.start_ULTIMATE.start_main_~item~0#1.baseInt| v_ArrVal_950) |c_ULTIMATE.start_ULTIMATE.start_main_~bucket~0#1.baseInt|) |v_ULTIMATE.start_ULTIMATE.start_main_~bcki~0#1.offsetInt_13|)) 0)) (not (<= |v_ULTIMATE.start_ULTIMATE.start_main_~bcki~0#1.offsetInt_13| |c_ULTIMATE.start_ULTIMATE.start_main_~bucket~0#1.offsetInt|)))) is different from false [2022-01-10 17:45:45,214 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_ULTIMATE.start_main_~item~0#1.baseInt_8| Int) (v_ArrVal_951 (Array Int Int)) (|v_ULTIMATE.start_ULTIMATE.start_main_~bcki~0#1.offsetInt_13| Int) (v_ArrVal_950 (Array Int Int))) (let ((.cse0 (select |c_#validInt| |v_ULTIMATE.start_ULTIMATE.start_main_~item~0#1.baseInt_8|))) (or (not (<= 0 |v_ULTIMATE.start_ULTIMATE.start_main_~bcki~0#1.offsetInt_13|)) (not (<= .cse0 0)) (not (= (select (let ((.cse1 (store |c_#memory_$Pointer$.baseInt| |v_ULTIMATE.start_ULTIMATE.start_main_~item~0#1.baseInt_8| v_ArrVal_951))) (select .cse1 (select (select .cse1 |c_ULTIMATE.start_ULTIMATE.start_main_~bucket~0#1.baseInt|) |v_ULTIMATE.start_ULTIMATE.start_main_~bcki~0#1.offsetInt_13|))) (select (select (store |c_#memory_$Pointer$.offsetInt| |v_ULTIMATE.start_ULTIMATE.start_main_~item~0#1.baseInt_8| v_ArrVal_950) |c_ULTIMATE.start_ULTIMATE.start_main_~bucket~0#1.baseInt|) |v_ULTIMATE.start_ULTIMATE.start_main_~bcki~0#1.offsetInt_13|)) 0)) (not (<= 0 .cse0)) (not (<= |v_ULTIMATE.start_ULTIMATE.start_main_~bcki~0#1.offsetInt_13| |c_ULTIMATE.start_ULTIMATE.start_main_~bucket~0#1.offsetInt|))))) is different from false [2022-01-10 17:45:45,273 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:45:45,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1096637239] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 17:45:45,273 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 17:45:45,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2022-01-10 17:45:45,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813220143] [2022-01-10 17:45:45,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 17:45:45,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-10 17:45:45,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:45:45,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-10 17:45:45,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=169, Unknown=2, NotChecked=54, Total=272 [2022-01-10 17:45:45,275 INFO L87 Difference]: Start difference. First operand 67 states and 82 transitions. Second operand has 17 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 17 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:45:46,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:45:46,001 INFO L93 Difference]: Finished difference Result 109 states and 132 transitions. [2022-01-10 17:45:46,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 17:45:46,001 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 17 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-10 17:45:46,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:45:46,002 INFO L225 Difference]: With dead ends: 109 [2022-01-10 17:45:46,002 INFO L226 Difference]: Without dead ends: 107 [2022-01-10 17:45:46,003 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 25 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=90, Invalid=258, Unknown=2, NotChecked=70, Total=420 [2022-01-10 17:45:46,003 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 48 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 170 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 17:45:46,003 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 248 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 244 Invalid, 0 Unknown, 170 Unchecked, 0.5s Time] [2022-01-10 17:45:46,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-01-10 17:45:46,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 69. [2022-01-10 17:45:46,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 67 states have (on average 1.2686567164179106) internal successors, (85), 68 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:45:46,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 85 transitions. [2022-01-10 17:45:46,013 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 85 transitions. Word has length 18 [2022-01-10 17:45:46,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:45:46,014 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 85 transitions. [2022-01-10 17:45:46,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 17 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:45:46,014 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 85 transitions. [2022-01-10 17:45:46,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-10 17:45:46,015 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:45:46,015 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:45:46,036 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-01-10 17:45:46,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 17:45:46,228 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:45:46,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:45:46,228 INFO L85 PathProgramCache]: Analyzing trace with hash -527841782, now seen corresponding path program 2 times [2022-01-10 17:45:46,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:45:46,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114110871] [2022-01-10 17:45:46,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:45:46,229 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:45:46,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:45:46,962 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:45:46,962 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:45:46,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114110871] [2022-01-10 17:45:46,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114110871] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 17:45:46,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078142560] [2022-01-10 17:45:46,963 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 17:45:46,963 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 17:45:46,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 17:45:46,968 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) [2022-01-10 17:45:46,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-10 17:45:47,623 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-10 17:45:47,623 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 17:45:47,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 84 conjunts are in the unsatisfiable core [2022-01-10 17:45:47,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 17:45:47,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:45:47,669 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 40 [2022-01-10 17:45:47,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:45:47,683 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 40 [2022-01-10 17:45:47,727 INFO L353 Elim1Store]: treesize reduction 62, result has 21.5 percent of original size [2022-01-10 17:45:47,727 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 91 treesize of output 90 [2022-01-10 17:45:47,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:45:47,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:45:47,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:45:47,744 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 37 [2022-01-10 17:45:47,756 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 23 [2022-01-10 17:45:47,767 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 31 [2022-01-10 17:45:47,778 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 23 [2022-01-10 17:45:47,788 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 31 [2022-01-10 17:45:47,799 INFO L353 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2022-01-10 17:45:47,800 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 45 [2022-01-10 17:45:48,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:45:48,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:45:48,071 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 17:45:48,072 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 17:45:48,085 INFO L353 Elim1Store]: treesize reduction 49, result has 12.5 percent of original size [2022-01-10 17:45:48,086 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 137 treesize of output 91 [2022-01-10 17:45:48,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:45:48,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:45:48,095 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 86 [2022-01-10 17:45:48,439 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 17:45:48,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:45:48,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:45:48,442 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 17:45:48,454 INFO L353 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2022-01-10 17:45:48,455 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 133 treesize of output 91 [2022-01-10 17:45:48,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:45:48,477 INFO L353 Elim1Store]: treesize reduction 56, result has 11.1 percent of original size [2022-01-10 17:45:48,478 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 66 treesize of output 66 [2022-01-10 17:45:48,825 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 17:45:48,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:45:48,852 INFO L353 Elim1Store]: treesize reduction 65, result has 19.8 percent of original size [2022-01-10 17:45:48,853 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 129 treesize of output 74 [2022-01-10 17:45:48,869 INFO L353 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2022-01-10 17:45:48,869 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 47 treesize of output 22 [2022-01-10 17:45:48,914 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:45:48,914 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 17:45:55,397 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:45:55,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2078142560] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 17:45:55,397 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 17:45:55,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 10] total 26 [2022-01-10 17:45:55,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055455200] [2022-01-10 17:45:55,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 17:45:55,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-10 17:45:55,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:45:55,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-10 17:45:55,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=560, Unknown=1, NotChecked=0, Total=650 [2022-01-10 17:45:55,399 INFO L87 Difference]: Start difference. First operand 69 states and 85 transitions. Second operand has 26 states, 26 states have (on average 1.9230769230769231) internal successors, (50), 26 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:45:56,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:45:56,864 INFO L93 Difference]: Finished difference Result 105 states and 125 transitions. [2022-01-10 17:45:56,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-10 17:45:56,864 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.9230769230769231) internal successors, (50), 26 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-10 17:45:56,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:45:56,865 INFO L225 Difference]: With dead ends: 105 [2022-01-10 17:45:56,865 INFO L226 Difference]: Without dead ends: 94 [2022-01-10 17:45:56,866 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=193, Invalid=1066, Unknown=1, NotChecked=0, Total=1260 [2022-01-10 17:45:56,866 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 41 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 202 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 17:45:56,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 445 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 267 Invalid, 0 Unknown, 202 Unchecked, 0.7s Time] [2022-01-10 17:45:56,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-01-10 17:45:56,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 88. [2022-01-10 17:45:56,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 86 states have (on average 1.2325581395348837) internal successors, (106), 87 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) [2022-01-10 17:45:56,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 106 transitions. [2022-01-10 17:45:56,878 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 106 transitions. Word has length 19 [2022-01-10 17:45:56,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:45:56,879 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 106 transitions. [2022-01-10 17:45:56,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.9230769230769231) internal successors, (50), 26 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:45:56,879 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 106 transitions. [2022-01-10 17:45:56,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-10 17:45:56,880 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:45:56,880 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:45:56,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-10 17:45:57,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 17:45:57,083 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:45:57,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:45:57,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1098388199, now seen corresponding path program 2 times [2022-01-10 17:45:57,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:45:57,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586423881] [2022-01-10 17:45:57,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:45:57,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:45:57,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:45:57,635 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:45:57,635 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:45:57,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586423881] [2022-01-10 17:45:57,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586423881] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 17:45:57,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1837610304] [2022-01-10 17:45:57,636 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 17:45:57,636 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 17:45:57,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 17:45:57,640 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) [2022-01-10 17:45:57,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-10 17:45:58,044 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-10 17:45:58,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 17:45:58,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 78 conjunts are in the unsatisfiable core [2022-01-10 17:45:58,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 17:45:58,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:45:58,082 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 34 [2022-01-10 17:45:58,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:45:58,092 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 38 [2022-01-10 17:45:58,128 INFO L353 Elim1Store]: treesize reduction 50, result has 25.4 percent of original size [2022-01-10 17:45:58,128 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 84 treesize of output 83 [2022-01-10 17:45:58,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:45:58,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:45:58,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:45:58,139 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 31 [2022-01-10 17:45:58,150 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 23 [2022-01-10 17:45:58,156 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 46 [2022-01-10 17:45:58,182 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 23 [2022-01-10 17:45:58,217 INFO L353 Elim1Store]: treesize reduction 124, result has 10.8 percent of original size [2022-01-10 17:45:58,217 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 85 treesize of output 72 [2022-01-10 17:45:58,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:45:58,309 INFO L353 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-01-10 17:45:58,310 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 83 treesize of output 67 [2022-01-10 17:45:58,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:45:58,337 INFO L353 Elim1Store]: treesize reduction 12, result has 67.6 percent of original size [2022-01-10 17:45:58,337 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 40 [2022-01-10 17:45:58,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:45:58,346 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 30 [2022-01-10 17:45:58,352 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-01-10 17:45:58,484 INFO L353 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-01-10 17:45:58,485 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 81 treesize of output 65 [2022-01-10 17:45:58,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:45:58,492 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 30 [2022-01-10 17:45:58,522 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2022-01-10 17:45:59,347 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 17:45:59,348 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 17:45:59,349 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 17:45:59,363 INFO L353 Elim1Store]: treesize reduction 17, result has 32.0 percent of original size [2022-01-10 17:45:59,364 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 105 treesize of output 58 [2022-01-10 17:45:59,371 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 17:45:59,377 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-01-10 17:45:59,377 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2022-01-10 17:45:59,437 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 13 [2022-01-10 17:45:59,471 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:45:59,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 17:45:59,768 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1357 (Array Int Int)) (v_ArrVal_1356 (Array Int Int)) (|v_ULTIMATE.start_ULTIMATE.start_main_~bcki~0#1.offsetInt_26| Int)) (or (= (let ((.cse3 (store |c_#memory_$Pointer$.offsetInt| |c_ULTIMATE.start_ULTIMATE.start_main_~item~0#1.baseInt| v_ArrVal_1357)) (.cse0 (store |c_#memory_$Pointer$.baseInt| |c_ULTIMATE.start_ULTIMATE.start_main_~item~0#1.baseInt| v_ArrVal_1356))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_ULTIMATE.start_main_~bucket~0#1.baseInt|) |v_ULTIMATE.start_ULTIMATE.start_main_~bcki~0#1.offsetInt_26|)) (.cse2 (select (select .cse3 |c_ULTIMATE.start_ULTIMATE.start_main_~bucket~0#1.baseInt|) |v_ULTIMATE.start_ULTIMATE.start_main_~bcki~0#1.offsetInt_26|))) (select (select (store |c_#memory_intInt| |c_ULTIMATE.start_ULTIMATE.start_main_~item~0#1.baseInt| (store (select |c_#memory_intInt| |c_ULTIMATE.start_ULTIMATE.start_main_~item~0#1.baseInt|) (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~item~0#1.offsetInt| 8) 18446744073709551616) 2)) (select (select .cse0 .cse1) .cse2)) (mod (+ (select (select .cse3 .cse1) .cse2) 16) 18446744073709551616)))) 2) (not (<= 0 |v_ULTIMATE.start_ULTIMATE.start_main_~bcki~0#1.offsetInt_26|)) (not (<= |v_ULTIMATE.start_ULTIMATE.start_main_~bcki~0#1.offsetInt_26| |c_ULTIMATE.start_ULTIMATE.start_main_~bucket~0#1.offsetInt|)))) is different from false [2022-01-10 17:45:59,806 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 17:45:59,807 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 67 [2022-01-10 17:46:00,008 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:46:00,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1837610304] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 17:46:00,008 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 17:46:00,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 25 [2022-01-10 17:46:00,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800269601] [2022-01-10 17:46:00,009 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 17:46:00,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-10 17:46:00,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:46:00,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-10 17:46:00,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=486, Unknown=2, NotChecked=44, Total=600 [2022-01-10 17:46:00,010 INFO L87 Difference]: Start difference. First operand 88 states and 106 transitions. Second operand has 25 states, 25 states have (on average 2.16) internal successors, (54), 25 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:46:01,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:46:01,713 INFO L93 Difference]: Finished difference Result 176 states and 217 transitions. [2022-01-10 17:46:01,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 17:46:01,714 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.16) internal successors, (54), 25 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-10 17:46:01,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:46:01,714 INFO L225 Difference]: With dead ends: 176 [2022-01-10 17:46:01,714 INFO L226 Difference]: Without dead ends: 142 [2022-01-10 17:46:01,715 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=143, Invalid=789, Unknown=2, NotChecked=58, Total=992 [2022-01-10 17:46:01,716 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 107 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 239 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-10 17:46:01,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 354 Invalid, 624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 353 Invalid, 0 Unknown, 239 Unchecked, 1.1s Time] [2022-01-10 17:46:01,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2022-01-10 17:46:01,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 99. [2022-01-10 17:46:01,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 97 states have (on average 1.2268041237113403) internal successors, (119), 98 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:46:01,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 119 transitions. [2022-01-10 17:46:01,726 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 119 transitions. Word has length 20 [2022-01-10 17:46:01,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:46:01,727 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 119 transitions. [2022-01-10 17:46:01,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.16) internal successors, (54), 25 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:46:01,727 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 119 transitions. [2022-01-10 17:46:01,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-10 17:46:01,728 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:46:01,728 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:46:01,748 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-01-10 17:46:01,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-01-10 17:46:01,939 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:46:01,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:46:01,940 INFO L85 PathProgramCache]: Analyzing trace with hash -587854022, now seen corresponding path program 1 times [2022-01-10 17:46:01,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:46:01,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553992892] [2022-01-10 17:46:01,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:46:01,940 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:46:02,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:46:02,367 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 17:46:02,367 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:46:02,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553992892] [2022-01-10 17:46:02,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553992892] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 17:46:02,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162001336] [2022-01-10 17:46:02,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:46:02,368 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 17:46:02,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 17:46:02,369 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) [2022-01-10 17:46:02,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-10 17:46:02,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:46:02,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 125 conjunts are in the unsatisfiable core [2022-01-10 17:46:02,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 17:46:02,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:46:02,737 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 40 [2022-01-10 17:46:02,813 INFO L353 Elim1Store]: treesize reduction 54, result has 31.6 percent of original size [2022-01-10 17:46:02,814 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 145 treesize of output 146 [2022-01-10 17:46:02,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:46:02,825 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 42 [2022-01-10 17:46:02,834 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 34 [2022-01-10 17:46:02,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:46:02,876 INFO L353 Elim1Store]: treesize reduction 36, result has 44.6 percent of original size [2022-01-10 17:46:02,877 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 54 [2022-01-10 17:46:02,915 INFO L353 Elim1Store]: treesize reduction 54, result has 19.4 percent of original size [2022-01-10 17:46:02,916 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 43 [2022-01-10 17:46:02,926 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 24 [2022-01-10 17:46:02,934 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-01-10 17:46:02,945 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 19 [2022-01-10 17:46:02,970 INFO L353 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-01-10 17:46:02,971 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-01-10 17:46:02,987 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 19 [2022-01-10 17:46:03,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:46:03,047 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-01-10 17:46:03,070 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 31 [2022-01-10 17:46:03,103 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 31 [2022-01-10 17:46:03,158 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 51 [2022-01-10 17:46:03,219 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 51 [2022-01-10 17:46:03,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:46:03,454 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 70 [2022-01-10 17:46:12,191 WARN L228 SmtUtils]: Spent 8.53s on a formula simplification that was a NOOP. DAG size: 83 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-10 17:46:12,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:46:12,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:46:12,249 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 17:46:12,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:46:12,252 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 17:46:12,253 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 17:46:12,375 INFO L353 Elim1Store]: treesize reduction 120, result has 39.1 percent of original size [2022-01-10 17:46:12,376 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 11 new quantified variables, introduced 31 case distinctions, treesize of input 257 treesize of output 274 [2022-01-10 17:46:12,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:46:12,475 INFO L353 Elim1Store]: treesize reduction 88, result has 43.9 percent of original size [2022-01-10 17:46:12,476 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 280 treesize of output 330 [2022-01-10 17:46:12,571 INFO L353 Elim1Store]: treesize reduction 12, result has 85.2 percent of original size [2022-01-10 17:46:12,571 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 345 treesize of output 401 [2022-01-10 17:46:12,609 INFO L353 Elim1Store]: treesize reduction 28, result has 40.4 percent of original size [2022-01-10 17:46:12,610 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 407 treesize of output 420