/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/array-crafted/zero_sum_const5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 15:34:00,835 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 15:34:00,837 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 15:34:00,890 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 15:34:00,890 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 15:34:00,892 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 15:34:00,897 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 15:34:00,902 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 15:34:00,904 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 15:34:00,908 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 15:34:00,909 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 15:34:00,910 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 15:34:00,911 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 15:34:00,913 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 15:34:00,914 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 15:34:00,916 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 15:34:00,916 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 15:34:00,917 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 15:34:00,921 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 15:34:00,926 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 15:34:00,927 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 15:34:00,929 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 15:34:00,930 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 15:34:00,931 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 15:34:00,936 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 15:34:00,946 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 15:34:00,947 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 15:34:00,947 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 15:34:00,950 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 15:34:00,978 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 15:34:00,978 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 15:34:00,978 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 15:34:00,978 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 15:34:00,984 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 15:34:00,984 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 15:34:00,984 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 15:34:00,984 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 15:34:00,985 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 15:34:00,985 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 15:34:00,986 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 15:34:00,986 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 15:34:00,986 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 15:34:00,986 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 15:34:00,986 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 15:34:00,986 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 15:34:00,986 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 15:34:00,986 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 15:34:00,987 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 15:34:00,987 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 15:34:00,987 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 15:34:00,988 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 15:34:00,988 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 15:34:00,989 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 15:34:00,989 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 15:34:00,989 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 15:34:00,989 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 15:34:00,989 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 15:34:00,989 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 15:34:00,990 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 15:34:00,990 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 15:34:00,990 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 15:34:00,991 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 15:34:00,991 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 15:34:01,182 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 15:34:01,199 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 15:34:01,201 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 15:34:01,202 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 15:34:01,203 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 15:34:01,204 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/zero_sum_const5.c [2022-01-10 15:34:01,260 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f67bc7441/4b4528b4fef540dd8b214ab292ab13f5/FLAG9f990a849 [2022-01-10 15:34:01,650 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 15:34:01,650 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-crafted/zero_sum_const5.c [2022-01-10 15:34:01,659 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f67bc7441/4b4528b4fef540dd8b214ab292ab13f5/FLAG9f990a849 [2022-01-10 15:34:01,669 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f67bc7441/4b4528b4fef540dd8b214ab292ab13f5 [2022-01-10 15:34:01,671 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 15:34:01,672 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 15:34:01,675 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 15:34:01,675 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 15:34:01,679 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 15:34:01,679 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 03:34:01" (1/1) ... [2022-01-10 15:34:01,680 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29082b60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:34:01, skipping insertion in model container [2022-01-10 15:34:01,680 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 03:34:01" (1/1) ... [2022-01-10 15:34:01,685 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 15:34:01,698 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 15:34:01,836 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-crafted/zero_sum_const5.c[406,419] [2022-01-10 15:34:01,857 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 15:34:01,870 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 15:34:01,881 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-crafted/zero_sum_const5.c[406,419] [2022-01-10 15:34:01,892 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 15:34:01,904 INFO L208 MainTranslator]: Completed translation [2022-01-10 15:34:01,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:34:01 WrapperNode [2022-01-10 15:34:01,905 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 15:34:01,905 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 15:34:01,906 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 15:34:01,906 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 15:34:01,914 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:34:01" (1/1) ... [2022-01-10 15:34:01,921 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:34:01" (1/1) ... [2022-01-10 15:34:01,953 INFO L137 Inliner]: procedures = 18, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 147 [2022-01-10 15:34:01,953 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 15:34:01,954 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 15:34:01,954 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 15:34:01,954 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 15:34:01,961 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:34:01" (1/1) ... [2022-01-10 15:34:01,961 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:34:01" (1/1) ... [2022-01-10 15:34:01,975 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:34:01" (1/1) ... [2022-01-10 15:34:01,976 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:34:01" (1/1) ... [2022-01-10 15:34:01,982 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:34:01" (1/1) ... [2022-01-10 15:34:01,986 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:34:01" (1/1) ... [2022-01-10 15:34:02,001 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:34:01" (1/1) ... [2022-01-10 15:34:02,003 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 15:34:02,004 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 15:34:02,004 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 15:34:02,004 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 15:34:02,011 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:34:01" (1/1) ... [2022-01-10 15:34:02,021 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 15:34:02,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 15:34:02,044 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 15:34:02,048 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 15:34:02,074 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 15:34:02,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 15:34:02,074 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-01-10 15:34:02,074 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-10 15:34:02,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 15:34:02,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 15:34:02,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-01-10 15:34:02,130 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 15:34:02,131 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 15:34:02,420 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 15:34:02,426 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 15:34:02,426 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2022-01-10 15:34:02,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 03:34:02 BoogieIcfgContainer [2022-01-10 15:34:02,428 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 15:34:02,428 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 15:34:02,428 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 15:34:02,429 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 15:34:02,432 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 03:34:02" (1/1) ... [2022-01-10 15:34:02,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 03:34:02 BasicIcfg [2022-01-10 15:34:02,604 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 15:34:02,605 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 15:34:02,606 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 15:34:02,608 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 15:34:02,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 03:34:01" (1/4) ... [2022-01-10 15:34:02,609 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1db9f68f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 03:34:02, skipping insertion in model container [2022-01-10 15:34:02,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:34:01" (2/4) ... [2022-01-10 15:34:02,609 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1db9f68f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 03:34:02, skipping insertion in model container [2022-01-10 15:34:02,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 03:34:02" (3/4) ... [2022-01-10 15:34:02,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1db9f68f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 03:34:02, skipping insertion in model container [2022-01-10 15:34:02,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 03:34:02" (4/4) ... [2022-01-10 15:34:02,611 INFO L111 eAbstractionObserver]: Analyzing ICFG zero_sum_const5.cTransformedIcfg [2022-01-10 15:34:02,614 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 15:34:02,615 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 15:34:02,651 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 15:34:02,657 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 15:34:02,657 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 15:34:02,669 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 42 states have (on average 1.5952380952380953) internal successors, (67), 43 states have internal predecessors, (67), 0 states have call successors, (0), 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 15:34:02,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-10 15:34:02,673 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 15:34:02,674 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 15:34:02,674 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 15:34:02,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 15:34:02,679 INFO L85 PathProgramCache]: Analyzing trace with hash 2008623670, now seen corresponding path program 1 times [2022-01-10 15:34:02,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 15:34:02,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919230622] [2022-01-10 15:34:02,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:34:02,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 15:34:02,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 15:34:02,912 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 15:34:02,912 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 15:34:02,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919230622] [2022-01-10 15:34:02,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919230622] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 15:34:02,913 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 15:34:02,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 15:34:02,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611640742] [2022-01-10 15:34:02,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 15:34:02,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 15:34:02,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 15:34:02,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 15:34:02,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 15:34:02,962 INFO L87 Difference]: Start difference. First operand has 44 states, 42 states have (on average 1.5952380952380953) internal successors, (67), 43 states have internal predecessors, (67), 0 states have call successors, (0), 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 13.5) internal successors, (27), 2 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 15:34:02,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 15:34:02,986 INFO L93 Difference]: Finished difference Result 83 states and 126 transitions. [2022-01-10 15:34:02,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 15:34:02,988 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-01-10 15:34:02,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 15:34:02,994 INFO L225 Difference]: With dead ends: 83 [2022-01-10 15:34:02,995 INFO L226 Difference]: Without dead ends: 39 [2022-01-10 15:34:02,997 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 15:34:03,005 INFO L933 BasicCegarLoop]: 55 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, 55 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 15:34:03,006 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 15:34:03,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-01-10 15:34:03,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2022-01-10 15:34:03,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.2894736842105263) internal successors, (49), 38 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 15:34:03,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 49 transitions. [2022-01-10 15:34:03,039 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 49 transitions. Word has length 27 [2022-01-10 15:34:03,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 15:34:03,040 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 49 transitions. [2022-01-10 15:34:03,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 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 15:34:03,042 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 49 transitions. [2022-01-10 15:34:03,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-10 15:34:03,044 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 15:34:03,044 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 15:34:03,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 15:34:03,045 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 15:34:03,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 15:34:03,050 INFO L85 PathProgramCache]: Analyzing trace with hash -814390261, now seen corresponding path program 1 times [2022-01-10 15:34:03,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 15:34:03,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476235993] [2022-01-10 15:34:03,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:34:03,051 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 15:34:03,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 15:34:03,330 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 15:34:03,331 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 15:34:03,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476235993] [2022-01-10 15:34:03,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476235993] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 15:34:03,332 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 15:34:03,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 15:34:03,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838356909] [2022-01-10 15:34:03,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 15:34:03,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 15:34:03,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 15:34:03,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 15:34:03,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 15:34:03,336 INFO L87 Difference]: Start difference. First operand 39 states and 49 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 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 15:34:03,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 15:34:03,523 INFO L93 Difference]: Finished difference Result 62 states and 81 transitions. [2022-01-10 15:34:03,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 15:34:03,524 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-01-10 15:34:03,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 15:34:03,525 INFO L225 Difference]: With dead ends: 62 [2022-01-10 15:34:03,525 INFO L226 Difference]: Without dead ends: 58 [2022-01-10 15:34:03,525 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 15:34:03,526 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 3 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 15:34:03,526 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 107 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 15:34:03,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-01-10 15:34:03,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2022-01-10 15:34:03,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.3508771929824561) internal successors, (77), 57 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:34:03,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 77 transitions. [2022-01-10 15:34:03,542 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 77 transitions. Word has length 27 [2022-01-10 15:34:03,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 15:34:03,543 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 77 transitions. [2022-01-10 15:34:03,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 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 15:34:03,544 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 77 transitions. [2022-01-10 15:34:03,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-10 15:34:03,549 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 15:34:03,552 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 15:34:03,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 15:34:03,552 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 15:34:03,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 15:34:03,553 INFO L85 PathProgramCache]: Analyzing trace with hash -915555635, now seen corresponding path program 1 times [2022-01-10 15:34:03,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 15:34:03,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431417930] [2022-01-10 15:34:03,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:34:03,554 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 15:34:03,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 15:34:03,824 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 15:34:03,824 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 15:34:03,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431417930] [2022-01-10 15:34:03,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431417930] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 15:34:03,825 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 15:34:03,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 15:34:03,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001131772] [2022-01-10 15:34:03,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 15:34:03,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 15:34:03,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 15:34:03,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 15:34:03,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 15:34:03,829 INFO L87 Difference]: Start difference. First operand 58 states and 77 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:34:04,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 15:34:04,139 INFO L93 Difference]: Finished difference Result 114 states and 153 transitions. [2022-01-10 15:34:04,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 15:34:04,140 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-01-10 15:34:04,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 15:34:04,141 INFO L225 Difference]: With dead ends: 114 [2022-01-10 15:34:04,141 INFO L226 Difference]: Without dead ends: 61 [2022-01-10 15:34:04,142 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 15:34:04,142 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 39 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 15:34:04,143 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 19 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 15:34:04,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-01-10 15:34:04,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 50. [2022-01-10 15:34:04,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.2244897959183674) internal successors, (60), 49 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:34:04,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2022-01-10 15:34:04,153 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 29 [2022-01-10 15:34:04,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 15:34:04,154 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2022-01-10 15:34:04,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:34:04,155 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2022-01-10 15:34:04,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-01-10 15:34:04,158 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 15:34:04,158 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 15:34:04,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 15:34:04,159 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 15:34:04,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 15:34:04,160 INFO L85 PathProgramCache]: Analyzing trace with hash 2036955715, now seen corresponding path program 1 times [2022-01-10 15:34:04,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 15:34:04,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357303321] [2022-01-10 15:34:04,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:34:04,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 15:34:04,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 15:34:04,671 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-10 15:34:04,672 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 15:34:04,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357303321] [2022-01-10 15:34:04,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357303321] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 15:34:04,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22979345] [2022-01-10 15:34:04,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:34:04,672 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 15:34:04,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 15:34:04,675 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 15:34:04,703 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 15:34:05,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 15:34:05,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-10 15:34:05,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 15:34:05,410 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 15:34:05,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 15:34:05,634 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-10 15:34:05,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [22979345] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 15:34:05,635 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 15:34:05,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 9 [2022-01-10 15:34:05,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123106029] [2022-01-10 15:34:05,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 15:34:05,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 15:34:05,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 15:34:05,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 15:34:05,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 15:34:05,636 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:34:06,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 15:34:06,317 INFO L93 Difference]: Finished difference Result 127 states and 157 transitions. [2022-01-10 15:34:06,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 15:34:06,318 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2022-01-10 15:34:06,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 15:34:06,319 INFO L225 Difference]: With dead ends: 127 [2022-01-10 15:34:06,319 INFO L226 Difference]: Without dead ends: 83 [2022-01-10 15:34:06,320 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 92 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-01-10 15:34:06,320 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 105 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-10 15:34:06,321 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 25 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-10 15:34:06,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-01-10 15:34:06,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 72. [2022-01-10 15:34:06,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.1549295774647887) internal successors, (82), 71 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 15:34:06,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 82 transitions. [2022-01-10 15:34:06,333 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 82 transitions. Word has length 49 [2022-01-10 15:34:06,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 15:34:06,334 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 82 transitions. [2022-01-10 15:34:06,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:34:06,334 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 82 transitions. [2022-01-10 15:34:06,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-10 15:34:06,335 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 15:34:06,335 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 15:34:06,346 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 15:34:06,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 15:34:06,541 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 15:34:06,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 15:34:06,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1160259077, now seen corresponding path program 2 times [2022-01-10 15:34:06,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 15:34:06,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737563697] [2022-01-10 15:34:06,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:34:06,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 15:34:11,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat