/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_BITWISE.epf -i ../../../trunk/examples/svcomp/array-examples/standard_running-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 09:30:18,445 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 09:30:18,446 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 09:30:18,505 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 09:30:18,505 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 09:30:18,508 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 09:30:18,510 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 09:30:18,513 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 09:30:18,514 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 09:30:18,514 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 09:30:18,515 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 09:30:18,516 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 09:30:18,516 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 09:30:18,516 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 09:30:18,517 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 09:30:18,518 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 09:30:18,518 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 09:30:18,519 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 09:30:18,520 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 09:30:18,521 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 09:30:18,521 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 09:30:18,527 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 09:30:18,530 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 09:30:18,531 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 09:30:18,537 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 09:30:18,541 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 09:30:18,542 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 09:30:18,545 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 09:30:18,546 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf [2022-01-10 09:30:18,572 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 09:30:18,572 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 09:30:18,572 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 09:30:18,572 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 09:30:18,573 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 09:30:18,573 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 09:30:18,574 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 09:30:18,574 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 09:30:18,574 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 09:30:18,574 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 09:30:18,574 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 09:30:18,575 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 09:30:18,575 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 09:30:18,575 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 09:30:18,575 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 09:30:18,575 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 09:30:18,575 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 09:30:18,575 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 09:30:18,575 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 09:30:18,575 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 09:30:18,575 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 09:30:18,576 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 09:30:18,576 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 09:30:18,576 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 09:30:18,577 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 09:30:18,577 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 09:30:18,577 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 09:30:18,577 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 09:30:18,577 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 09:30:18,577 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 09:30:18,577 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 09:30:18,577 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 09:30:18,578 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 09:30:18,578 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_BITWISE 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 09:30:18,765 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 09:30:18,784 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 09:30:18,786 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 09:30:18,787 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 09:30:18,787 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 09:30:18,788 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_running-1.i [2022-01-10 09:30:18,839 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b68c30a50/c798a67b96344a1ebf9a302f3d69fda9/FLAG161fdfe97 [2022-01-10 09:30:19,223 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 09:30:19,224 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_running-1.i [2022-01-10 09:30:19,232 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b68c30a50/c798a67b96344a1ebf9a302f3d69fda9/FLAG161fdfe97 [2022-01-10 09:30:19,242 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b68c30a50/c798a67b96344a1ebf9a302f3d69fda9 [2022-01-10 09:30:19,243 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 09:30:19,245 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 09:30:19,246 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 09:30:19,247 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 09:30:19,249 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 09:30:19,249 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 09:30:19" (1/1) ... [2022-01-10 09:30:19,249 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47af015a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:30:19, skipping insertion in model container [2022-01-10 09:30:19,250 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 09:30:19" (1/1) ... [2022-01-10 09:30:19,253 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 09:30:19,262 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 09:30:19,402 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_running-1.i[811,824] [2022-01-10 09:30:19,415 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 09:30:19,421 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 09:30:19,430 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_running-1.i[811,824] [2022-01-10 09:30:19,446 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 09:30:19,457 INFO L208 MainTranslator]: Completed translation [2022-01-10 09:30:19,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:30:19 WrapperNode [2022-01-10 09:30:19,458 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 09:30:19,458 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 09:30:19,459 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 09:30:19,459 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 09:30:19,463 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:30:19" (1/1) ... [2022-01-10 09:30:19,474 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:30:19" (1/1) ... [2022-01-10 09:30:19,489 INFO L137 Inliner]: procedures = 18, calls = 21, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 83 [2022-01-10 09:30:19,489 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 09:30:19,490 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 09:30:19,490 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 09:30:19,490 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 09:30:19,495 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:30:19" (1/1) ... [2022-01-10 09:30:19,495 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:30:19" (1/1) ... [2022-01-10 09:30:19,500 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:30:19" (1/1) ... [2022-01-10 09:30:19,500 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:30:19" (1/1) ... [2022-01-10 09:30:19,510 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:30:19" (1/1) ... [2022-01-10 09:30:19,513 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:30:19" (1/1) ... [2022-01-10 09:30:19,519 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:30:19" (1/1) ... [2022-01-10 09:30:19,522 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 09:30:19,523 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 09:30:19,523 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 09:30:19,524 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 09:30:19,524 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:30:19" (1/1) ... [2022-01-10 09:30:19,529 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 09:30:19,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:30:19,544 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 09:30:19,563 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 09:30:19,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 09:30:19,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 09:30:19,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-10 09:30:19,574 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-01-10 09:30:19,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 09:30:19,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 09:30:19,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-10 09:30:19,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-01-10 09:30:19,615 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 09:30:19,616 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 09:30:19,723 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 09:30:19,727 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 09:30:19,727 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-10 09:30:19,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:30:19 BoogieIcfgContainer [2022-01-10 09:30:19,728 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 09:30:19,728 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 09:30:19,729 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 09:30:19,731 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 09:30:19,733 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:30:19" (1/1) ... [2022-01-10 09:30:19,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 09:30:19 BasicIcfg [2022-01-10 09:30:19,851 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 09:30:19,852 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 09:30:19,852 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 09:30:19,854 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 09:30:19,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 09:30:19" (1/4) ... [2022-01-10 09:30:19,854 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ef0e1c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 09:30:19, skipping insertion in model container [2022-01-10 09:30:19,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:30:19" (2/4) ... [2022-01-10 09:30:19,854 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ef0e1c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 09:30:19, skipping insertion in model container [2022-01-10 09:30:19,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:30:19" (3/4) ... [2022-01-10 09:30:19,855 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ef0e1c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 09:30:19, skipping insertion in model container [2022-01-10 09:30:19,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 09:30:19" (4/4) ... [2022-01-10 09:30:19,855 INFO L111 eAbstractionObserver]: Analyzing ICFG standard_running-1.iTransformedIcfg [2022-01-10 09:30:19,858 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 09:30:19,859 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 09:30:19,886 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 09:30:19,891 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 09:30:19,891 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 09:30:19,899 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 23 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 09:30:19,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-01-10 09:30:19,903 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:30:19,903 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:30:19,903 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 09:30:19,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:30:19,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1518006800, now seen corresponding path program 1 times [2022-01-10 09:30:19,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:30:19,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828653615] [2022-01-10 09:30:19,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:30:19,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:30:19,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:30:20,049 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 09:30:20,049 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:30:20,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828653615] [2022-01-10 09:30:20,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828653615] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 09:30:20,050 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 09:30:20,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 09:30:20,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774791291] [2022-01-10 09:30:20,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 09:30:20,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 09:30:20,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 09:30:20,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 09:30:20,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 09:30:20,080 INFO L87 Difference]: Start difference. First operand has 24 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 23 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) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 09:30:20,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 09:30:20,092 INFO L93 Difference]: Finished difference Result 44 states and 64 transitions. [2022-01-10 09:30:20,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 09:30:20,094 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-01-10 09:30:20,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 09:30:20,100 INFO L225 Difference]: With dead ends: 44 [2022-01-10 09:30:20,100 INFO L226 Difference]: Without dead ends: 20 [2022-01-10 09:30:20,102 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 09:30:20,106 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 09:30:20,107 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 09:30:20,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-01-10 09:30:20,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-01-10 09:30:20,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 19 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 09:30:20,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 27 transitions. [2022-01-10 09:30:20,130 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 27 transitions. Word has length 10 [2022-01-10 09:30:20,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 09:30:20,131 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 27 transitions. [2022-01-10 09:30:20,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 09:30:20,133 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 27 transitions. [2022-01-10 09:30:20,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-01-10 09:30:20,133 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:30:20,133 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:30:20,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 09:30:20,134 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 09:30:20,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:30:20,135 INFO L85 PathProgramCache]: Analyzing trace with hash 253462477, now seen corresponding path program 1 times [2022-01-10 09:30:20,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:30:20,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637892136] [2022-01-10 09:30:20,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:30:20,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:30:20,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:30:20,249 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 09:30:20,249 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:30:20,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637892136] [2022-01-10 09:30:20,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637892136] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 09:30:20,250 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 09:30:20,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 09:30:20,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572282236] [2022-01-10 09:30:20,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 09:30:20,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 09:30:20,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 09:30:20,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 09:30:20,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 09:30:20,252 INFO L87 Difference]: Start difference. First operand 20 states and 27 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 09:30:20,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 09:30:20,286 INFO L93 Difference]: Finished difference Result 31 states and 42 transitions. [2022-01-10 09:30:20,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 09:30:20,287 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-01-10 09:30:20,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 09:30:20,288 INFO L225 Difference]: With dead ends: 31 [2022-01-10 09:30:20,288 INFO L226 Difference]: Without dead ends: 27 [2022-01-10 09:30:20,288 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 09:30:20,289 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 10 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 09:30:20,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 75 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 09:30:20,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-01-10 09:30:20,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-01-10 09:30:20,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 26 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 09:30:20,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 38 transitions. [2022-01-10 09:30:20,293 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 38 transitions. Word has length 10 [2022-01-10 09:30:20,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 09:30:20,293 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 38 transitions. [2022-01-10 09:30:20,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 09:30:20,293 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 38 transitions. [2022-01-10 09:30:20,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-10 09:30:20,294 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:30:20,294 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:30:20,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 09:30:20,294 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 09:30:20,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:30:20,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1873668850, now seen corresponding path program 1 times [2022-01-10 09:30:20,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:30:20,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546756841] [2022-01-10 09:30:20,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:30:20,295 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:30:20,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:30:20,419 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 09:30:20,419 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:30:20,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546756841] [2022-01-10 09:30:20,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546756841] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 09:30:20,420 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 09:30:20,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 09:30:20,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511222901] [2022-01-10 09:30:20,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 09:30:20,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 09:30:20,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 09:30:20,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 09:30:20,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 09:30:20,422 INFO L87 Difference]: Start difference. First operand 27 states and 38 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 09:30:20,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 09:30:20,543 INFO L93 Difference]: Finished difference Result 51 states and 74 transitions. [2022-01-10 09:30:20,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 09:30:20,543 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-10 09:30:20,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 09:30:20,544 INFO L225 Difference]: With dead ends: 51 [2022-01-10 09:30:20,545 INFO L226 Difference]: Without dead ends: 40 [2022-01-10 09:30:20,545 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-10 09:30:20,546 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 5 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 09:30:20,546 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 43 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 09:30:20,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-01-10 09:30:20,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 35. [2022-01-10 09:30:20,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.4705882352941178) internal successors, (50), 34 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 09:30:20,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 50 transitions. [2022-01-10 09:30:20,550 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 50 transitions. Word has length 17 [2022-01-10 09:30:20,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 09:30:20,550 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 50 transitions. [2022-01-10 09:30:20,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 09:30:20,551 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 50 transitions. [2022-01-10 09:30:20,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-10 09:30:20,551 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:30:20,551 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:30:20,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 09:30:20,552 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 09:30:20,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:30:20,552 INFO L85 PathProgramCache]: Analyzing trace with hash -613843983, now seen corresponding path program 1 times [2022-01-10 09:30:20,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:30:20,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049143433] [2022-01-10 09:30:20,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:30:20,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:30:20,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:30:20,605 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 09:30:20,605 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:30:20,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049143433] [2022-01-10 09:30:20,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049143433] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 09:30:20,606 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 09:30:20,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 09:30:20,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363692392] [2022-01-10 09:30:20,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 09:30:20,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 09:30:20,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 09:30:20,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 09:30:20,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 09:30:20,608 INFO L87 Difference]: Start difference. First operand 35 states and 50 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 09:30:20,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 09:30:20,674 INFO L93 Difference]: Finished difference Result 87 states and 127 transitions. [2022-01-10 09:30:20,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 09:30:20,675 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-10 09:30:20,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 09:30:20,676 INFO L225 Difference]: With dead ends: 87 [2022-01-10 09:30:20,676 INFO L226 Difference]: Without dead ends: 56 [2022-01-10 09:30:20,676 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 09:30:20,677 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 14 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 09:30:20,677 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 26 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 09:30:20,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-01-10 09:30:20,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 37. [2022-01-10 09:30:20,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.4444444444444444) internal successors, (52), 36 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 09:30:20,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 52 transitions. [2022-01-10 09:30:20,681 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 52 transitions. Word has length 17 [2022-01-10 09:30:20,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 09:30:20,682 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 52 transitions. [2022-01-10 09:30:20,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 09:30:20,682 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 52 transitions. [2022-01-10 09:30:20,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-10 09:30:20,682 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:30:20,682 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:30:20,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 09:30:20,683 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 09:30:20,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:30:20,687 INFO L85 PathProgramCache]: Analyzing trace with hash -754774316, now seen corresponding path program 1 times [2022-01-10 09:30:20,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:30:20,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576885429] [2022-01-10 09:30:20,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:30:20,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:30:20,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:30:20,780 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 09:30:20,780 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:30:20,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576885429] [2022-01-10 09:30:20,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576885429] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 09:30:20,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035765214] [2022-01-10 09:30:20,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:30:20,781 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:30:20,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:30:20,782 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 09:30:20,811 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 09:30:20,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:30:20,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 09:30:20,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 09:30:21,013 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 09:30:21,013 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 09:30:21,060 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 09:30:21,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1035765214] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 09:30:21,060 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 09:30:21,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-01-10 09:30:21,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756942790] [2022-01-10 09:30:21,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 09:30:21,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 09:30:21,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 09:30:21,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 09:30:21,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 09:30:21,062 INFO L87 Difference]: Start difference. First operand 37 states and 52 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 09:30:21,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 09:30:21,269 INFO L93 Difference]: Finished difference Result 146 states and 219 transitions. [2022-01-10 09:30:21,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 09:30:21,270 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-01-10 09:30:21,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 09:30:21,270 INFO L225 Difference]: With dead ends: 146 [2022-01-10 09:30:21,271 INFO L226 Difference]: Without dead ends: 114 [2022-01-10 09:30:21,271 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-10 09:30:21,272 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 95 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 09:30:21,272 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 62 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 09:30:21,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-01-10 09:30:21,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 109. [2022-01-10 09:30:21,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 1.462962962962963) internal successors, (158), 108 states have internal predecessors, (158), 0 states have call successors, (0), 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 09:30:21,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 158 transitions. [2022-01-10 09:30:21,281 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 158 transitions. Word has length 22 [2022-01-10 09:30:21,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 09:30:21,281 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 158 transitions. [2022-01-10 09:30:21,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 09:30:21,281 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 158 transitions. [2022-01-10 09:30:21,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-01-10 09:30:21,282 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:30:21,282 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:30:21,301 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-10 09:30:21,498 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 09:30:21,498 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 09:30:21,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:30:21,499 INFO L85 PathProgramCache]: Analyzing trace with hash -218171403, now seen corresponding path program 1 times [2022-01-10 09:30:21,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:30:21,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861323282] [2022-01-10 09:30:21,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:30:21,499 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:30:21,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:30:21,689 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-01-10 09:30:21,689 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:30:21,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861323282] [2022-01-10 09:30:21,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861323282] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 09:30:21,690 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 09:30:21,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 09:30:21,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310723672] [2022-01-10 09:30:21,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 09:30:21,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 09:30:21,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 09:30:21,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 09:30:21,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 09:30:21,691 INFO L87 Difference]: Start difference. First operand 109 states and 158 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 09:30:21,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 09:30:21,776 INFO L93 Difference]: Finished difference Result 198 states and 285 transitions. [2022-01-10 09:30:21,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 09:30:21,777 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-01-10 09:30:21,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 09:30:21,778 INFO L225 Difference]: With dead ends: 198 [2022-01-10 09:30:21,778 INFO L226 Difference]: Without dead ends: 127 [2022-01-10 09:30:21,779 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-10 09:30:21,779 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 9 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 09:30:21,779 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 45 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 09:30:21,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-01-10 09:30:21,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 108. [2022-01-10 09:30:21,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 1.3925233644859814) internal successors, (149), 107 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 09:30:21,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 149 transitions. [2022-01-10 09:30:21,791 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 149 transitions. Word has length 58 [2022-01-10 09:30:21,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 09:30:21,791 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 149 transitions. [2022-01-10 09:30:21,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 09:30:21,791 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 149 transitions. [2022-01-10 09:30:21,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-01-10 09:30:21,796 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:30:21,796 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:30:21,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 09:30:21,797 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 09:30:21,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:30:21,798 INFO L85 PathProgramCache]: Analyzing trace with hash 149017172, now seen corresponding path program 1 times [2022-01-10 09:30:21,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:30:21,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147896381] [2022-01-10 09:30:21,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:30:21,798 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:30:21,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:30:21,954 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-01-10 09:30:21,954 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:30:21,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147896381] [2022-01-10 09:30:21,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147896381] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 09:30:21,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679095610] [2022-01-10 09:30:21,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:30:21,956 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:30:21,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:30:21,970 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 09:30:21,970 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 09:30:22,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:30:22,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 37 conjunts are in the unsatisfiable core [2022-01-10 09:30:22,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 09:30:34,064 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-01-10 09:30:34,064 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 09:30:38,289 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-01-10 09:30:38,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [679095610] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 09:30:38,289 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 09:30:38,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2022-01-10 09:30:38,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41560884] [2022-01-10 09:30:38,290 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 09:30:38,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-10 09:30:38,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 09:30:38,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-10 09:30:38,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=160, Unknown=6, NotChecked=0, Total=240 [2022-01-10 09:30:38,291 INFO L87 Difference]: Start difference. First operand 108 states and 149 transitions. Second operand has 16 states, 16 states have (on average 4.25) internal successors, (68), 16 states have internal predecessors, (68), 0 states have call successors, (0), 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 09:30:48,147 WARN L228 SmtUtils]: Spent 7.35s on a formula simplification that was a NOOP. DAG size: 42 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-10 09:31:33,385 WARN L228 SmtUtils]: Spent 7.04s on a formula simplification that was a NOOP. DAG size: 42 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-10 09:31:34,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 09:31:34,394 INFO L93 Difference]: Finished difference Result 364 states and 523 transitions. [2022-01-10 09:31:34,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-10 09:31:34,395 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.25) internal successors, (68), 16 states have internal predecessors, (68), 0 states have call successors, (0), 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 58 [2022-01-10 09:31:34,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 09:31:34,396 INFO L225 Difference]: With dead ends: 364 [2022-01-10 09:31:34,397 INFO L226 Difference]: Without dead ends: 267 [2022-01-10 09:31:34,397 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 104 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 68.0s TimeCoverageRelationStatistics Valid=199, Invalid=384, Unknown=17, NotChecked=0, Total=600 [2022-01-10 09:31:34,398 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 393 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 116 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-01-10 09:31:34,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [393 Valid, 194 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 258 Invalid, 0 Unknown, 116 Unchecked, 2.6s Time] [2022-01-10 09:31:34,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2022-01-10 09:31:34,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 257. [2022-01-10 09:31:34,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 256 states have (on average 1.41796875) internal successors, (363), 256 states have internal predecessors, (363), 0 states have call successors, (0), 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 09:31:34,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 363 transitions. [2022-01-10 09:31:34,433 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 363 transitions. Word has length 58 [2022-01-10 09:31:34,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 09:31:34,434 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 363 transitions. [2022-01-10 09:31:34,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.25) internal successors, (68), 16 states have internal predecessors, (68), 0 states have call successors, (0), 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 09:31:34,434 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 363 transitions. [2022-01-10 09:31:34,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-10 09:31:34,435 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:31:34,435 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 9, 5, 5, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:31:34,454 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 09:31:34,647 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,SelfDestructingSolverStorable6 [2022-01-10 09:31:34,647 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 09:31:34,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:31:34,648 INFO L85 PathProgramCache]: Analyzing trace with hash 263636405, now seen corresponding path program 1 times [2022-01-10 09:31:34,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:31:34,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606894386] [2022-01-10 09:31:34,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:31:34,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:31:34,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:31:34,858 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2022-01-10 09:31:34,858 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:31:34,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606894386] [2022-01-10 09:31:34,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606894386] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 09:31:34,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64622684] [2022-01-10 09:31:34,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:31:34,859 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:31:34,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:31:34,860 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 09:31:34,861 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 09:31:35,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:31:35,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 838 conjuncts, 30 conjunts are in the unsatisfiable core [2022-01-10 09:31:35,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 09:31:35,801 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 329 trivial. 0 not checked. [2022-01-10 09:31:35,801 INFO L328 TraceCheckSpWp]: Computing backward predicates...