/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/easy11.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-?-bc289cb [2022-01-28 16:05:27,746 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-28 16:05:27,748 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-28 16:05:27,804 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-28 16:05:27,805 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-28 16:05:27,806 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-28 16:05:27,807 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-28 16:05:27,809 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-28 16:05:27,810 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-28 16:05:27,811 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-28 16:05:27,812 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-28 16:05:27,812 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-28 16:05:27,813 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-28 16:05:27,813 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-28 16:05:27,814 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-28 16:05:27,815 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-28 16:05:27,816 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-28 16:05:27,816 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-28 16:05:27,817 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-28 16:05:27,819 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-28 16:05:27,820 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-28 16:05:27,821 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-28 16:05:27,821 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-28 16:05:27,822 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-28 16:05:27,824 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-28 16:05:27,830 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-28 16:05:27,830 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-28 16:05:27,831 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-28 16:05:27,832 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2022-01-28 16:05:27,859 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-28 16:05:27,859 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-28 16:05:27,859 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-28 16:05:27,859 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-28 16:05:27,860 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-28 16:05:27,860 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-28 16:05:27,861 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-28 16:05:27,861 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-28 16:05:27,861 INFO L138 SettingsManager]: * Use SBE=true [2022-01-28 16:05:27,861 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-28 16:05:27,861 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-28 16:05:27,861 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-28 16:05:27,861 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-28 16:05:27,861 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-28 16:05:27,862 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-28 16:05:27,862 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-28 16:05:27,862 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-28 16:05:27,862 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-28 16:05:27,862 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-28 16:05:27,862 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-28 16:05:27,862 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-28 16:05:27,862 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-28 16:05:27,863 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-28 16:05:27,863 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-28 16:05:27,863 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-28 16:05:27,863 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-28 16:05:27,863 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-28 16:05:27,863 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-28 16:05:27,863 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-28 16:05:27,863 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-28 16:05:27,864 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-28 16:05:27,864 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-28 16:05:27,864 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-28 16:05:27,864 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-28 16:05:28,057 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-28 16:05:28,076 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-28 16:05:28,078 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-28 16:05:28,079 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-01-28 16:05:28,080 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-01-28 16:05:28,081 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/easy11.wvr.bpl [2022-01-28 16:05:28,082 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/easy11.wvr.bpl' [2022-01-28 16:05:28,101 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-28 16:05:28,102 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-28 16:05:28,103 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-28 16:05:28,104 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-28 16:05:28,104 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-28 16:05:28,116 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "easy11.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.01 04:05:28" (1/1) ... [2022-01-28 16:05:28,124 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "easy11.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.01 04:05:28" (1/1) ... [2022-01-28 16:05:28,129 INFO L137 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-01-28 16:05:28,130 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-28 16:05:28,131 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-28 16:05:28,131 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-28 16:05:28,132 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-28 16:05:28,138 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "easy11.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.01 04:05:28" (1/1) ... [2022-01-28 16:05:28,138 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "easy11.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.01 04:05:28" (1/1) ... [2022-01-28 16:05:28,139 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "easy11.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.01 04:05:28" (1/1) ... [2022-01-28 16:05:28,139 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "easy11.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.01 04:05:28" (1/1) ... [2022-01-28 16:05:28,141 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "easy11.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.01 04:05:28" (1/1) ... [2022-01-28 16:05:28,144 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "easy11.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.01 04:05:28" (1/1) ... [2022-01-28 16:05:28,145 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "easy11.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.01 04:05:28" (1/1) ... [2022-01-28 16:05:28,147 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-28 16:05:28,147 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-28 16:05:28,147 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-28 16:05:28,147 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-28 16:05:28,148 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "easy11.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.01 04:05:28" (1/1) ... [2022-01-28 16:05:28,153 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-28 16:05:28,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 16:05:28,178 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) [2022-01-28 16:05:28,179 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 [2022-01-28 16:05:28,206 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-01-28 16:05:28,206 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-28 16:05:28,206 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-28 16:05:28,206 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-01-28 16:05:28,207 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-28 16:05:28,207 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-28 16:05:28,207 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-01-28 16:05:28,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-28 16:05:28,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-28 16:05:28,208 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-28 16:05:28,241 INFO L234 CfgBuilder]: Building ICFG [2022-01-28 16:05:28,242 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-28 16:05:28,306 INFO L275 CfgBuilder]: Performing block encoding [2022-01-28 16:05:28,311 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-28 16:05:28,311 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-28 16:05:28,312 INFO L202 PluginConnector]: Adding new model easy11.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 04:05:28 BoogieIcfgContainer [2022-01-28 16:05:28,312 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-28 16:05:28,314 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-28 16:05:28,317 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-28 16:05:28,320 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-28 16:05:28,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "easy11.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.01 04:05:28" (1/2) ... [2022-01-28 16:05:28,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68b61ae7 and model type easy11.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 04:05:28, skipping insertion in model container [2022-01-28 16:05:28,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "easy11.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 04:05:28" (2/2) ... [2022-01-28 16:05:28,322 INFO L111 eAbstractionObserver]: Analyzing ICFG easy11.wvr.bpl [2022-01-28 16:05:28,326 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-28 16:05:28,326 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-28 16:05:28,327 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-28 16:05:28,327 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-28 16:05:28,345 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_x not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 16:05:28,346 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_x not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 16:05:28,346 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_x not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 16:05:28,346 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_x not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 16:05:28,347 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_x not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 16:05:28,347 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_x not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 16:05:28,347 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_x not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 16:05:28,347 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_x not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 16:05:28,348 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_x not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 16:05:28,348 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_x not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 16:05:28,348 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_x not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 16:05:28,348 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_x not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 16:05:28,349 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_x not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 16:05:28,349 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_x not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 16:05:28,349 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_x not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 16:05:28,349 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_x not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 16:05:28,350 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_x not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 16:05:28,350 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_x not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 16:05:28,350 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_x not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 16:05:28,350 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_x not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 16:05:28,350 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_x not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 16:05:28,351 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_x not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 16:05:28,351 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_x not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 16:05:28,351 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_x not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 16:05:28,353 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_x not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 16:05:28,355 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_x not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 16:05:28,357 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-01-28 16:05:28,393 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-28 16:05:28,399 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=FINITE_AUTOMATA, 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 [2022-01-28 16:05:28,399 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-28 16:05:28,407 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 28 places, 23 transitions, 62 flow [2022-01-28 16:05:28,428 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 53 states, 52 states have (on average 1.9423076923076923) internal successors, (101), 52 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:28,430 INFO L276 IsEmpty]: Start isEmpty. Operand has 53 states, 52 states have (on average 1.9423076923076923) internal successors, (101), 52 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:28,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-28 16:05:28,436 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:05:28,437 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:05:28,437 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:05:28,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:05:28,452 INFO L85 PathProgramCache]: Analyzing trace with hash 376198808, now seen corresponding path program 1 times [2022-01-28 16:05:28,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:05:28,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060095015] [2022-01-28 16:05:28,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:05:28,475 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:05:28,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:05:28,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:05:28,793 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:05:28,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060095015] [2022-01-28 16:05:28,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060095015] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 16:05:28,794 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 16:05:28,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-28 16:05:28,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649415866] [2022-01-28 16:05:28,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 16:05:28,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-28 16:05:28,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:05:28,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-28 16:05:28,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-01-28 16:05:28,841 INFO L87 Difference]: Start difference. First operand has 53 states, 52 states have (on average 1.9423076923076923) internal successors, (101), 52 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:29,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:05:29,071 INFO L93 Difference]: Finished difference Result 98 states and 191 transitions. [2022-01-28 16:05:29,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-28 16:05:29,074 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-01-28 16:05:29,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:05:29,085 INFO L225 Difference]: With dead ends: 98 [2022-01-28 16:05:29,086 INFO L226 Difference]: Without dead ends: 88 [2022-01-28 16:05:29,089 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2022-01-28 16:05:29,095 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 37 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-28 16:05:29,096 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 90 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-28 16:05:29,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-01-28 16:05:29,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 65. [2022-01-28 16:05:29,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.9375) internal successors, (124), 64 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:29,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 124 transitions. [2022-01-28 16:05:29,158 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 124 transitions. Word has length 15 [2022-01-28 16:05:29,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:05:29,159 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 124 transitions. [2022-01-28 16:05:29,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:29,160 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 124 transitions. [2022-01-28 16:05:29,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-28 16:05:29,161 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:05:29,162 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:05:29,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-28 16:05:29,162 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:05:29,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:05:29,166 INFO L85 PathProgramCache]: Analyzing trace with hash 84683978, now seen corresponding path program 2 times [2022-01-28 16:05:29,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:05:29,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656200371] [2022-01-28 16:05:29,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:05:29,167 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:05:29,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:05:29,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:05:29,320 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:05:29,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656200371] [2022-01-28 16:05:29,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656200371] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 16:05:29,322 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 16:05:29,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-28 16:05:29,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142865085] [2022-01-28 16:05:29,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 16:05:29,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-28 16:05:29,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:05:29,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-28 16:05:29,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-01-28 16:05:29,324 INFO L87 Difference]: Start difference. First operand 65 states and 124 transitions. Second operand has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:29,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:05:29,557 INFO L93 Difference]: Finished difference Result 98 states and 190 transitions. [2022-01-28 16:05:29,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-28 16:05:29,558 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-01-28 16:05:29,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:05:29,562 INFO L225 Difference]: With dead ends: 98 [2022-01-28 16:05:29,562 INFO L226 Difference]: Without dead ends: 88 [2022-01-28 16:05:29,563 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-01-28 16:05:29,569 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 32 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 16:05:29,570 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 79 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 16:05:29,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-01-28 16:05:29,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 66. [2022-01-28 16:05:29,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.9538461538461538) internal successors, (127), 65 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:29,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 127 transitions. [2022-01-28 16:05:29,582 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 127 transitions. Word has length 15 [2022-01-28 16:05:29,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:05:29,583 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 127 transitions. [2022-01-28 16:05:29,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:29,583 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 127 transitions. [2022-01-28 16:05:29,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-28 16:05:29,589 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:05:29,589 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:05:29,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-28 16:05:29,589 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:05:29,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:05:29,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1241582308, now seen corresponding path program 3 times [2022-01-28 16:05:29,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:05:29,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104052044] [2022-01-28 16:05:29,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:05:29,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:05:29,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:05:29,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:05:29,730 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:05:29,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104052044] [2022-01-28 16:05:29,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104052044] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 16:05:29,731 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 16:05:29,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-28 16:05:29,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689406071] [2022-01-28 16:05:29,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 16:05:29,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-28 16:05:29,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:05:29,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-28 16:05:29,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-01-28 16:05:29,735 INFO L87 Difference]: Start difference. First operand 66 states and 127 transitions. Second operand has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:29,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:05:29,921 INFO L93 Difference]: Finished difference Result 89 states and 172 transitions. [2022-01-28 16:05:29,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-28 16:05:29,922 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-01-28 16:05:29,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:05:29,924 INFO L225 Difference]: With dead ends: 89 [2022-01-28 16:05:29,924 INFO L226 Difference]: Without dead ends: 79 [2022-01-28 16:05:29,924 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-01-28 16:05:29,932 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 28 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 16:05:29,933 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 74 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 16:05:29,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-01-28 16:05:29,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 67. [2022-01-28 16:05:29,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.9393939393939394) internal successors, (128), 66 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:29,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 128 transitions. [2022-01-28 16:05:29,939 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 128 transitions. Word has length 15 [2022-01-28 16:05:29,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:05:29,939 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 128 transitions. [2022-01-28 16:05:29,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:29,940 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 128 transitions. [2022-01-28 16:05:29,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-28 16:05:29,941 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:05:29,941 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:05:29,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-28 16:05:29,941 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:05:29,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:05:29,942 INFO L85 PathProgramCache]: Analyzing trace with hash -571538106, now seen corresponding path program 4 times [2022-01-28 16:05:29,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:05:29,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851392906] [2022-01-28 16:05:29,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:05:29,942 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:05:29,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:05:30,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:05:30,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:05:30,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851392906] [2022-01-28 16:05:30,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851392906] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 16:05:30,074 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 16:05:30,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-28 16:05:30,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039601268] [2022-01-28 16:05:30,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 16:05:30,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-28 16:05:30,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:05:30,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-28 16:05:30,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-01-28 16:05:30,076 INFO L87 Difference]: Start difference. First operand 67 states and 128 transitions. Second operand has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:30,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:05:30,238 INFO L93 Difference]: Finished difference Result 88 states and 169 transitions. [2022-01-28 16:05:30,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-28 16:05:30,238 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-01-28 16:05:30,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:05:30,239 INFO L225 Difference]: With dead ends: 88 [2022-01-28 16:05:30,239 INFO L226 Difference]: Without dead ends: 78 [2022-01-28 16:05:30,240 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-01-28 16:05:30,244 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 27 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 16:05:30,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 80 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 16:05:30,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-01-28 16:05:30,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 66. [2022-01-28 16:05:30,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.9384615384615385) internal successors, (126), 65 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:30,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 126 transitions. [2022-01-28 16:05:30,250 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 126 transitions. Word has length 15 [2022-01-28 16:05:30,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:05:30,251 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 126 transitions. [2022-01-28 16:05:30,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:30,251 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 126 transitions. [2022-01-28 16:05:30,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-28 16:05:30,252 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:05:30,252 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:05:30,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-28 16:05:30,252 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:05:30,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:05:30,253 INFO L85 PathProgramCache]: Analyzing trace with hash -2022100142, now seen corresponding path program 5 times [2022-01-28 16:05:30,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:05:30,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956623328] [2022-01-28 16:05:30,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:05:30,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:05:30,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:05:30,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:05:30,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:05:30,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956623328] [2022-01-28 16:05:30,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956623328] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 16:05:30,361 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 16:05:30,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-28 16:05:30,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624351264] [2022-01-28 16:05:30,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 16:05:30,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-28 16:05:30,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:05:30,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-28 16:05:30,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-01-28 16:05:30,363 INFO L87 Difference]: Start difference. First operand 66 states and 126 transitions. Second operand has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:30,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:05:30,583 INFO L93 Difference]: Finished difference Result 106 states and 211 transitions. [2022-01-28 16:05:30,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-28 16:05:30,584 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-01-28 16:05:30,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:05:30,585 INFO L225 Difference]: With dead ends: 106 [2022-01-28 16:05:30,585 INFO L226 Difference]: Without dead ends: 96 [2022-01-28 16:05:30,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-01-28 16:05:30,586 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 31 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 16:05:30,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 67 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 16:05:30,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-01-28 16:05:30,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 68. [2022-01-28 16:05:30,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.9850746268656716) internal successors, (133), 67 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:30,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 133 transitions. [2022-01-28 16:05:30,592 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 133 transitions. Word has length 15 [2022-01-28 16:05:30,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:05:30,593 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 133 transitions. [2022-01-28 16:05:30,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:30,593 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 133 transitions. [2022-01-28 16:05:30,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-28 16:05:30,594 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:05:30,594 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:05:30,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-28 16:05:30,594 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:05:30,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:05:30,595 INFO L85 PathProgramCache]: Analyzing trace with hash 946600868, now seen corresponding path program 6 times [2022-01-28 16:05:30,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:05:30,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070156433] [2022-01-28 16:05:30,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:05:30,599 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:05:30,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:05:30,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:05:30,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:05:30,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070156433] [2022-01-28 16:05:30,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070156433] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 16:05:30,699 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 16:05:30,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-28 16:05:30,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366491540] [2022-01-28 16:05:30,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 16:05:30,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-28 16:05:30,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:05:30,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-28 16:05:30,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-01-28 16:05:30,700 INFO L87 Difference]: Start difference. First operand 68 states and 133 transitions. Second operand has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:30,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:05:30,867 INFO L93 Difference]: Finished difference Result 98 states and 195 transitions. [2022-01-28 16:05:30,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-28 16:05:30,867 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-01-28 16:05:30,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:05:30,868 INFO L225 Difference]: With dead ends: 98 [2022-01-28 16:05:30,868 INFO L226 Difference]: Without dead ends: 88 [2022-01-28 16:05:30,869 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-01-28 16:05:30,869 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 27 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 16:05:30,870 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 62 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 16:05:30,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-01-28 16:05:30,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 69. [2022-01-28 16:05:30,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 1.9705882352941178) internal successors, (134), 68 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:30,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 134 transitions. [2022-01-28 16:05:30,875 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 134 transitions. Word has length 15 [2022-01-28 16:05:30,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:05:30,875 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 134 transitions. [2022-01-28 16:05:30,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:30,875 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 134 transitions. [2022-01-28 16:05:30,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-28 16:05:30,876 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:05:30,876 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:05:30,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-28 16:05:30,876 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:05:30,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:05:30,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1616645070, now seen corresponding path program 7 times [2022-01-28 16:05:30,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:05:30,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563644397] [2022-01-28 16:05:30,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:05:30,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:05:30,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:05:30,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:05:30,960 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:05:30,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563644397] [2022-01-28 16:05:30,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563644397] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 16:05:30,960 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 16:05:30,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-28 16:05:30,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667562341] [2022-01-28 16:05:30,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 16:05:30,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-28 16:05:30,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:05:30,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-28 16:05:30,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-01-28 16:05:30,962 INFO L87 Difference]: Start difference. First operand 69 states and 134 transitions. Second operand has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:31,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:05:31,140 INFO L93 Difference]: Finished difference Result 97 states and 192 transitions. [2022-01-28 16:05:31,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-28 16:05:31,141 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-01-28 16:05:31,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:05:31,142 INFO L225 Difference]: With dead ends: 97 [2022-01-28 16:05:31,142 INFO L226 Difference]: Without dead ends: 87 [2022-01-28 16:05:31,142 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-01-28 16:05:31,143 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 26 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 16:05:31,143 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 65 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 16:05:31,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-01-28 16:05:31,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 67. [2022-01-28 16:05:31,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.9696969696969697) internal successors, (130), 66 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:31,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 130 transitions. [2022-01-28 16:05:31,147 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 130 transitions. Word has length 15 [2022-01-28 16:05:31,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:05:31,148 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 130 transitions. [2022-01-28 16:05:31,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:31,148 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 130 transitions. [2022-01-28 16:05:31,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-28 16:05:31,149 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:05:31,149 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:05:31,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-28 16:05:31,149 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:05:31,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:05:31,150 INFO L85 PathProgramCache]: Analyzing trace with hash 2022312024, now seen corresponding path program 8 times [2022-01-28 16:05:31,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:05:31,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595223574] [2022-01-28 16:05:31,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:05:31,150 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:05:31,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:05:31,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:05:31,246 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:05:31,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595223574] [2022-01-28 16:05:31,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595223574] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 16:05:31,246 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 16:05:31,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-28 16:05:31,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637385559] [2022-01-28 16:05:31,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 16:05:31,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-28 16:05:31,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:05:31,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-28 16:05:31,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-01-28 16:05:31,247 INFO L87 Difference]: Start difference. First operand 67 states and 130 transitions. Second operand has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:31,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:05:31,394 INFO L93 Difference]: Finished difference Result 95 states and 188 transitions. [2022-01-28 16:05:31,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-28 16:05:31,394 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-01-28 16:05:31,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:05:31,395 INFO L225 Difference]: With dead ends: 95 [2022-01-28 16:05:31,396 INFO L226 Difference]: Without dead ends: 85 [2022-01-28 16:05:31,396 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-01-28 16:05:31,399 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 27 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 16:05:31,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 62 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 16:05:31,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-01-28 16:05:31,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 69. [2022-01-28 16:05:31,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 1.9705882352941178) internal successors, (134), 68 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:31,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 134 transitions. [2022-01-28 16:05:31,408 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 134 transitions. Word has length 15 [2022-01-28 16:05:31,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:05:31,409 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 134 transitions. [2022-01-28 16:05:31,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:31,409 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 134 transitions. [2022-01-28 16:05:31,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-28 16:05:31,410 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:05:31,410 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:05:31,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-28 16:05:31,410 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:05:31,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:05:31,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1602611070, now seen corresponding path program 9 times [2022-01-28 16:05:31,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:05:31,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203253276] [2022-01-28 16:05:31,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:05:31,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:05:31,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:05:31,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:05:31,535 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:05:31,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203253276] [2022-01-28 16:05:31,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203253276] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 16:05:31,535 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 16:05:31,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-28 16:05:31,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414846733] [2022-01-28 16:05:31,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 16:05:31,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-28 16:05:31,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:05:31,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-28 16:05:31,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-01-28 16:05:31,537 INFO L87 Difference]: Start difference. First operand 69 states and 134 transitions. Second operand has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:31,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:05:31,704 INFO L93 Difference]: Finished difference Result 94 states and 185 transitions. [2022-01-28 16:05:31,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-28 16:05:31,705 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-01-28 16:05:31,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:05:31,705 INFO L225 Difference]: With dead ends: 94 [2022-01-28 16:05:31,705 INFO L226 Difference]: Without dead ends: 84 [2022-01-28 16:05:31,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-01-28 16:05:31,708 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 26 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 16:05:31,708 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 65 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 16:05:31,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-01-28 16:05:31,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 68. [2022-01-28 16:05:31,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.9701492537313432) internal successors, (132), 67 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:31,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 132 transitions. [2022-01-28 16:05:31,712 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 132 transitions. Word has length 15 [2022-01-28 16:05:31,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:05:31,714 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 132 transitions. [2022-01-28 16:05:31,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:31,714 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 132 transitions. [2022-01-28 16:05:31,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-28 16:05:31,717 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:05:31,718 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:05:31,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-28 16:05:31,718 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:05:31,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:05:31,719 INFO L85 PathProgramCache]: Analyzing trace with hash 60041618, now seen corresponding path program 10 times [2022-01-28 16:05:31,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:05:31,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250874205] [2022-01-28 16:05:31,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:05:31,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:05:31,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:05:31,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:05:31,821 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:05:31,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250874205] [2022-01-28 16:05:31,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250874205] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 16:05:31,821 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 16:05:31,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-28 16:05:31,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880006249] [2022-01-28 16:05:31,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 16:05:31,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-28 16:05:31,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:05:31,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-28 16:05:31,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-01-28 16:05:31,822 INFO L87 Difference]: Start difference. First operand 68 states and 132 transitions. Second operand has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:31,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:05:31,988 INFO L93 Difference]: Finished difference Result 97 states and 191 transitions. [2022-01-28 16:05:31,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-28 16:05:31,988 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-01-28 16:05:31,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:05:31,989 INFO L225 Difference]: With dead ends: 97 [2022-01-28 16:05:31,989 INFO L226 Difference]: Without dead ends: 88 [2022-01-28 16:05:31,989 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-01-28 16:05:31,990 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 28 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 16:05:31,990 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 71 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 16:05:31,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-01-28 16:05:31,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 70. [2022-01-28 16:05:31,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 1.9565217391304348) internal successors, (135), 69 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:31,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 135 transitions. [2022-01-28 16:05:31,994 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 135 transitions. Word has length 15 [2022-01-28 16:05:31,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:05:31,994 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 135 transitions. [2022-01-28 16:05:31,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:31,994 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 135 transitions. [2022-01-28 16:05:31,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-28 16:05:31,995 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:05:31,995 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:05:31,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-28 16:05:31,995 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:05:31,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:05:31,995 INFO L85 PathProgramCache]: Analyzing trace with hash 944169734, now seen corresponding path program 11 times [2022-01-28 16:05:31,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:05:31,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639287608] [2022-01-28 16:05:31,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:05:31,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:05:32,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:05:32,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:05:32,082 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:05:32,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639287608] [2022-01-28 16:05:32,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639287608] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 16:05:32,082 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 16:05:32,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-28 16:05:32,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867199647] [2022-01-28 16:05:32,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 16:05:32,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-28 16:05:32,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:05:32,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-28 16:05:32,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-01-28 16:05:32,083 INFO L87 Difference]: Start difference. First operand 70 states and 135 transitions. Second operand has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:32,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:05:32,231 INFO L93 Difference]: Finished difference Result 110 states and 221 transitions. [2022-01-28 16:05:32,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-28 16:05:32,232 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-01-28 16:05:32,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:05:32,232 INFO L225 Difference]: With dead ends: 110 [2022-01-28 16:05:32,233 INFO L226 Difference]: Without dead ends: 100 [2022-01-28 16:05:32,233 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-01-28 16:05:32,233 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 28 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 16:05:32,234 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 85 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 16:05:32,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-01-28 16:05:32,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 73. [2022-01-28 16:05:32,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 2.013888888888889) internal successors, (145), 72 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:32,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 145 transitions. [2022-01-28 16:05:32,237 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 145 transitions. Word has length 15 [2022-01-28 16:05:32,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:05:32,238 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 145 transitions. [2022-01-28 16:05:32,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:32,238 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 145 transitions. [2022-01-28 16:05:32,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-28 16:05:32,238 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:05:32,238 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:05:32,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-28 16:05:32,238 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:05:32,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:05:32,239 INFO L85 PathProgramCache]: Analyzing trace with hash -382096552, now seen corresponding path program 12 times [2022-01-28 16:05:32,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:05:32,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613802561] [2022-01-28 16:05:32,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:05:32,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:05:32,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:05:32,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:05:32,319 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:05:32,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613802561] [2022-01-28 16:05:32,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613802561] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 16:05:32,319 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 16:05:32,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-28 16:05:32,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050132647] [2022-01-28 16:05:32,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 16:05:32,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-28 16:05:32,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:05:32,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-28 16:05:32,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-01-28 16:05:32,321 INFO L87 Difference]: Start difference. First operand 73 states and 145 transitions. Second operand has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:32,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:05:32,482 INFO L93 Difference]: Finished difference Result 102 states and 205 transitions. [2022-01-28 16:05:32,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-28 16:05:32,483 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-01-28 16:05:32,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:05:32,485 INFO L225 Difference]: With dead ends: 102 [2022-01-28 16:05:32,485 INFO L226 Difference]: Without dead ends: 92 [2022-01-28 16:05:32,485 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-01-28 16:05:32,486 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 24 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 16:05:32,486 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 74 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 16:05:32,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-01-28 16:05:32,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 74. [2022-01-28 16:05:32,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 2.0) internal successors, (146), 73 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:32,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 146 transitions. [2022-01-28 16:05:32,489 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 146 transitions. Word has length 15 [2022-01-28 16:05:32,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:05:32,490 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 146 transitions. [2022-01-28 16:05:32,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:32,490 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 146 transitions. [2022-01-28 16:05:32,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-28 16:05:32,490 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:05:32,490 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:05:32,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-28 16:05:32,491 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:05:32,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:05:32,497 INFO L85 PathProgramCache]: Analyzing trace with hash 287947650, now seen corresponding path program 13 times [2022-01-28 16:05:32,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:05:32,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049629283] [2022-01-28 16:05:32,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:05:32,498 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:05:32,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:05:32,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:05:32,647 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:05:32,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049629283] [2022-01-28 16:05:32,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049629283] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 16:05:32,647 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 16:05:32,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-28 16:05:32,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001774261] [2022-01-28 16:05:32,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 16:05:32,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-28 16:05:32,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:05:32,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-28 16:05:32,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-01-28 16:05:32,649 INFO L87 Difference]: Start difference. First operand 74 states and 146 transitions. Second operand has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:32,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:05:32,824 INFO L93 Difference]: Finished difference Result 101 states and 202 transitions. [2022-01-28 16:05:32,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-28 16:05:32,825 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-01-28 16:05:32,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:05:32,825 INFO L225 Difference]: With dead ends: 101 [2022-01-28 16:05:32,826 INFO L226 Difference]: Without dead ends: 91 [2022-01-28 16:05:32,826 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-01-28 16:05:32,826 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 23 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 16:05:32,827 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 68 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 16:05:32,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-01-28 16:05:32,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 72. [2022-01-28 16:05:32,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 2.0) internal successors, (142), 71 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:32,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 142 transitions. [2022-01-28 16:05:32,830 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 142 transitions. Word has length 15 [2022-01-28 16:05:32,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:05:32,830 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 142 transitions. [2022-01-28 16:05:32,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:32,830 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 142 transitions. [2022-01-28 16:05:32,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-28 16:05:32,830 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:05:32,830 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:05:32,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-28 16:05:32,831 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:05:32,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:05:32,831 INFO L85 PathProgramCache]: Analyzing trace with hash 693614604, now seen corresponding path program 14 times [2022-01-28 16:05:32,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:05:32,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197288142] [2022-01-28 16:05:32,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:05:32,831 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:05:32,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:05:32,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:05:32,964 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:05:32,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197288142] [2022-01-28 16:05:32,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197288142] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 16:05:32,964 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 16:05:32,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-28 16:05:32,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400165868] [2022-01-28 16:05:32,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 16:05:32,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-28 16:05:32,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:05:32,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-28 16:05:32,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-01-28 16:05:32,966 INFO L87 Difference]: Start difference. First operand 72 states and 142 transitions. Second operand has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:33,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:05:33,120 INFO L93 Difference]: Finished difference Result 104 states and 209 transitions. [2022-01-28 16:05:33,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-28 16:05:33,120 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-01-28 16:05:33,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:05:33,121 INFO L225 Difference]: With dead ends: 104 [2022-01-28 16:05:33,121 INFO L226 Difference]: Without dead ends: 94 [2022-01-28 16:05:33,121 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-01-28 16:05:33,122 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 24 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 16:05:33,122 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 74 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 16:05:33,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-01-28 16:05:33,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 74. [2022-01-28 16:05:33,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 2.0) internal successors, (146), 73 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:33,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 146 transitions. [2022-01-28 16:05:33,127 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 146 transitions. Word has length 15 [2022-01-28 16:05:33,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:05:33,127 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 146 transitions. [2022-01-28 16:05:33,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:33,128 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 146 transitions. [2022-01-28 16:05:33,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-28 16:05:33,128 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:05:33,128 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:05:33,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-28 16:05:33,128 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:05:33,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:05:33,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1363658806, now seen corresponding path program 15 times [2022-01-28 16:05:33,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:05:33,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074313369] [2022-01-28 16:05:33,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:05:33,129 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:05:33,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:05:33,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:05:33,226 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:05:33,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074313369] [2022-01-28 16:05:33,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074313369] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 16:05:33,226 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 16:05:33,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-28 16:05:33,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864627415] [2022-01-28 16:05:33,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 16:05:33,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-28 16:05:33,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:05:33,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-28 16:05:33,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-01-28 16:05:33,228 INFO L87 Difference]: Start difference. First operand 74 states and 146 transitions. Second operand has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:33,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:05:33,375 INFO L93 Difference]: Finished difference Result 103 states and 206 transitions. [2022-01-28 16:05:33,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-28 16:05:33,375 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-01-28 16:05:33,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:05:33,376 INFO L225 Difference]: With dead ends: 103 [2022-01-28 16:05:33,376 INFO L226 Difference]: Without dead ends: 93 [2022-01-28 16:05:33,376 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-01-28 16:05:33,377 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 23 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 16:05:33,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 68 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 16:05:33,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-01-28 16:05:33,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 73. [2022-01-28 16:05:33,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 2.0) internal successors, (144), 72 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:33,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 144 transitions. [2022-01-28 16:05:33,379 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 144 transitions. Word has length 15 [2022-01-28 16:05:33,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:05:33,380 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 144 transitions. [2022-01-28 16:05:33,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:33,380 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 144 transitions. [2022-01-28 16:05:33,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-28 16:05:33,380 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:05:33,380 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:05:33,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-28 16:05:33,380 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:05:33,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:05:33,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1268655802, now seen corresponding path program 16 times [2022-01-28 16:05:33,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:05:33,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346869179] [2022-01-28 16:05:33,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:05:33,381 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:05:33,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:05:33,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:05:33,463 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:05:33,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346869179] [2022-01-28 16:05:33,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346869179] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 16:05:33,463 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 16:05:33,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-28 16:05:33,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857982647] [2022-01-28 16:05:33,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 16:05:33,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-28 16:05:33,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:05:33,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-28 16:05:33,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-01-28 16:05:33,464 INFO L87 Difference]: Start difference. First operand 73 states and 144 transitions. Second operand has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:33,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:05:33,732 INFO L93 Difference]: Finished difference Result 106 states and 212 transitions. [2022-01-28 16:05:33,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-28 16:05:33,733 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-01-28 16:05:33,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:05:33,733 INFO L225 Difference]: With dead ends: 106 [2022-01-28 16:05:33,733 INFO L226 Difference]: Without dead ends: 97 [2022-01-28 16:05:33,734 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-01-28 16:05:33,734 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 25 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-28 16:05:33,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 73 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-28 16:05:33,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-01-28 16:05:33,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 71. [2022-01-28 16:05:33,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.9714285714285715) internal successors, (138), 70 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:33,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 138 transitions. [2022-01-28 16:05:33,737 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 138 transitions. Word has length 15 [2022-01-28 16:05:33,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:05:33,737 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 138 transitions. [2022-01-28 16:05:33,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:33,737 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 138 transitions. [2022-01-28 16:05:33,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-28 16:05:33,738 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:05:33,738 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:05:33,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-28 16:05:33,738 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:05:33,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:05:33,738 INFO L85 PathProgramCache]: Analyzing trace with hash 775013660, now seen corresponding path program 17 times [2022-01-28 16:05:33,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:05:33,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714044436] [2022-01-28 16:05:33,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:05:33,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:05:33,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:05:33,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:05:33,858 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:05:33,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714044436] [2022-01-28 16:05:33,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714044436] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 16:05:33,859 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 16:05:33,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-28 16:05:33,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457979416] [2022-01-28 16:05:33,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 16:05:33,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-28 16:05:33,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:05:33,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-28 16:05:33,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-01-28 16:05:33,860 INFO L87 Difference]: Start difference. First operand 71 states and 138 transitions. Second operand has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:34,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:05:34,016 INFO L93 Difference]: Finished difference Result 95 states and 186 transitions. [2022-01-28 16:05:34,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-28 16:05:34,017 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-01-28 16:05:34,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:05:34,017 INFO L225 Difference]: With dead ends: 95 [2022-01-28 16:05:34,017 INFO L226 Difference]: Without dead ends: 85 [2022-01-28 16:05:34,017 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-01-28 16:05:34,018 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 25 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 16:05:34,018 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 86 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 16:05:34,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-01-28 16:05:34,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 74. [2022-01-28 16:05:34,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.9726027397260273) internal successors, (144), 73 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:34,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 144 transitions. [2022-01-28 16:05:34,021 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 144 transitions. Word has length 15 [2022-01-28 16:05:34,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:05:34,021 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 144 transitions. [2022-01-28 16:05:34,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:34,021 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 144 transitions. [2022-01-28 16:05:34,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-28 16:05:34,021 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:05:34,022 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:05:34,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-28 16:05:34,022 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:05:34,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:05:34,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1445057862, now seen corresponding path program 18 times [2022-01-28 16:05:34,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:05:34,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330908970] [2022-01-28 16:05:34,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:05:34,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:05:34,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:05:34,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:05:34,098 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:05:34,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330908970] [2022-01-28 16:05:34,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330908970] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 16:05:34,098 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 16:05:34,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-28 16:05:34,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839140925] [2022-01-28 16:05:34,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 16:05:34,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-28 16:05:34,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:05:34,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-28 16:05:34,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-01-28 16:05:34,100 INFO L87 Difference]: Start difference. First operand 74 states and 144 transitions. Second operand has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:34,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:05:34,245 INFO L93 Difference]: Finished difference Result 94 states and 183 transitions. [2022-01-28 16:05:34,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-28 16:05:34,245 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-01-28 16:05:34,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:05:34,246 INFO L225 Difference]: With dead ends: 94 [2022-01-28 16:05:34,246 INFO L226 Difference]: Without dead ends: 84 [2022-01-28 16:05:34,246 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-01-28 16:05:34,247 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 24 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 16:05:34,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 78 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 16:05:34,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-01-28 16:05:34,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 73. [2022-01-28 16:05:34,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.9722222222222223) internal successors, (142), 72 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:34,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 142 transitions. [2022-01-28 16:05:34,250 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 142 transitions. Word has length 15 [2022-01-28 16:05:34,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:05:34,250 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 142 transitions. [2022-01-28 16:05:34,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:34,250 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 142 transitions. [2022-01-28 16:05:34,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-28 16:05:34,250 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:05:34,250 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:05:34,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-28 16:05:34,251 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:05:34,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:05:34,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1187256746, now seen corresponding path program 19 times [2022-01-28 16:05:34,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:05:34,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128183704] [2022-01-28 16:05:34,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:05:34,251 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:05:34,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:05:34,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:05:34,333 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:05:34,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128183704] [2022-01-28 16:05:34,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128183704] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 16:05:34,334 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 16:05:34,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-28 16:05:34,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346341405] [2022-01-28 16:05:34,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 16:05:34,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-28 16:05:34,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:05:34,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-28 16:05:34,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-01-28 16:05:34,335 INFO L87 Difference]: Start difference. First operand 73 states and 142 transitions. Second operand has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:34,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:05:34,574 INFO L93 Difference]: Finished difference Result 97 states and 189 transitions. [2022-01-28 16:05:34,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-28 16:05:34,574 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-01-28 16:05:34,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:05:34,575 INFO L225 Difference]: With dead ends: 97 [2022-01-28 16:05:34,575 INFO L226 Difference]: Without dead ends: 88 [2022-01-28 16:05:34,575 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-01-28 16:05:34,576 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 25 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-28 16:05:34,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 85 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-28 16:05:34,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-01-28 16:05:34,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 72. [2022-01-28 16:05:34,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.971830985915493) internal successors, (140), 71 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:34,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 140 transitions. [2022-01-28 16:05:34,579 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 140 transitions. Word has length 15 [2022-01-28 16:05:34,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:05:34,579 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 140 transitions. [2022-01-28 16:05:34,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:34,579 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 140 transitions. [2022-01-28 16:05:34,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-28 16:05:34,580 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:05:34,580 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:05:34,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-28 16:05:34,580 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:05:34,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:05:34,580 INFO L85 PathProgramCache]: Analyzing trace with hash 2037250946, now seen corresponding path program 20 times [2022-01-28 16:05:34,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:05:34,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175096050] [2022-01-28 16:05:34,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:05:34,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:05:34,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:05:34,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:05:34,709 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:05:34,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175096050] [2022-01-28 16:05:34,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175096050] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 16:05:34,709 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 16:05:34,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-28 16:05:34,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369627856] [2022-01-28 16:05:34,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 16:05:34,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-28 16:05:34,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:05:34,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-28 16:05:34,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-01-28 16:05:34,710 INFO L87 Difference]: Start difference. First operand 72 states and 140 transitions. Second operand has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:35,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:05:35,052 INFO L93 Difference]: Finished difference Result 103 states and 199 transitions. [2022-01-28 16:05:35,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-28 16:05:35,053 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-01-28 16:05:35,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:05:35,053 INFO L225 Difference]: With dead ends: 103 [2022-01-28 16:05:35,053 INFO L226 Difference]: Without dead ends: 94 [2022-01-28 16:05:35,054 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2022-01-28 16:05:35,055 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 30 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-28 16:05:35,055 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 100 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-28 16:05:35,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-01-28 16:05:35,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 74. [2022-01-28 16:05:35,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.9589041095890412) internal successors, (143), 73 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:35,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 143 transitions. [2022-01-28 16:05:35,057 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 143 transitions. Word has length 15 [2022-01-28 16:05:35,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:05:35,058 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 143 transitions. [2022-01-28 16:05:35,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:35,058 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 143 transitions. [2022-01-28 16:05:35,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-28 16:05:35,058 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:05:35,058 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:05:35,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-28 16:05:35,058 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:05:35,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:05:35,059 INFO L85 PathProgramCache]: Analyzing trace with hash -703437834, now seen corresponding path program 1 times [2022-01-28 16:05:35,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:05:35,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607147792] [2022-01-28 16:05:35,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:05:35,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:05:35,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:05:35,079 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:05:35,080 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:05:35,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607147792] [2022-01-28 16:05:35,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607147792] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 16:05:35,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54461026] [2022-01-28 16:05:35,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:05:35,080 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:05:35,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 16:05:35,087 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) [2022-01-28 16:05:35,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-28 16:05:35,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:05:35,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-28 16:05:35,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 16:05:35,277 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:05:35,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 16:05:35,390 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:05:35,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [54461026] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-28 16:05:35,391 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-28 16:05:35,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 6 [2022-01-28 16:05:35,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735584747] [2022-01-28 16:05:35,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 16:05:35,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-28 16:05:35,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:05:35,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-28 16:05:35,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-28 16:05:35,392 INFO L87 Difference]: Start difference. First operand 74 states and 143 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) [2022-01-28 16:05:35,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:05:35,445 INFO L93 Difference]: Finished difference Result 108 states and 208 transitions. [2022-01-28 16:05:35,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-28 16:05:35,445 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 [2022-01-28 16:05:35,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:05:35,446 INFO L225 Difference]: With dead ends: 108 [2022-01-28 16:05:35,446 INFO L226 Difference]: Without dead ends: 108 [2022-01-28 16:05:35,446 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-01-28 16:05:35,447 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 32 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 16:05:35,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 62 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 16:05:35,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-01-28 16:05:35,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 69. [2022-01-28 16:05:35,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 2.0) internal successors, (136), 68 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:35,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 136 transitions. [2022-01-28 16:05:35,450 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 136 transitions. Word has length 17 [2022-01-28 16:05:35,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:05:35,450 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 136 transitions. [2022-01-28 16:05:35,450 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) [2022-01-28 16:05:35,450 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 136 transitions. [2022-01-28 16:05:35,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-28 16:05:35,451 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:05:35,452 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:05:35,478 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-28 16:05:35,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-01-28 16:05:35,667 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:05:35,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:05:35,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1972174214, now seen corresponding path program 1 times [2022-01-28 16:05:35,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:05:35,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912639680] [2022-01-28 16:05:35,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:05:35,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:05:35,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:05:35,751 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:05:35,751 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:05:35,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912639680] [2022-01-28 16:05:35,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912639680] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 16:05:35,751 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 16:05:35,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-28 16:05:35,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543823009] [2022-01-28 16:05:35,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 16:05:35,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-28 16:05:35,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:05:35,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-28 16:05:35,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-28 16:05:35,752 INFO L87 Difference]: Start difference. First operand 69 states and 136 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) [2022-01-28 16:05:35,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:05:35,818 INFO L93 Difference]: Finished difference Result 120 states and 227 transitions. [2022-01-28 16:05:35,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-28 16:05:35,818 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 [2022-01-28 16:05:35,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:05:35,819 INFO L225 Difference]: With dead ends: 120 [2022-01-28 16:05:35,819 INFO L226 Difference]: Without dead ends: 109 [2022-01-28 16:05:35,819 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-28 16:05:35,819 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 41 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 16:05:35,820 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 50 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 16:05:35,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-01-28 16:05:35,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 69. [2022-01-28 16:05:35,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 1.9705882352941178) internal successors, (134), 68 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:35,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 134 transitions. [2022-01-28 16:05:35,822 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 134 transitions. Word has length 17 [2022-01-28 16:05:35,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:05:35,822 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 134 transitions. [2022-01-28 16:05:35,822 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) [2022-01-28 16:05:35,822 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 134 transitions. [2022-01-28 16:05:35,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-28 16:05:35,823 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:05:35,823 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:05:35,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-28 16:05:35,823 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:05:35,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:05:35,823 INFO L85 PathProgramCache]: Analyzing trace with hash 563936820, now seen corresponding path program 2 times [2022-01-28 16:05:35,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:05:35,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263017936] [2022-01-28 16:05:35,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:05:35,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:05:35,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:05:35,847 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:05:35,847 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:05:35,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263017936] [2022-01-28 16:05:35,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263017936] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 16:05:35,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429929858] [2022-01-28 16:05:35,847 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-28 16:05:35,847 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:05:35,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 16:05:35,852 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) [2022-01-28 16:05:35,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-28 16:05:35,883 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-28 16:05:35,883 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 16:05:35,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-28 16:05:35,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 16:05:35,914 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:05:35,914 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 16:05:35,965 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:05:35,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429929858] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-28 16:05:35,965 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-28 16:05:35,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 7 [2022-01-28 16:05:35,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183510257] [2022-01-28 16:05:35,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 16:05:35,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-28 16:05:35,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:05:35,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-28 16:05:35,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-01-28 16:05:35,966 INFO L87 Difference]: Start difference. First operand 69 states and 134 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) [2022-01-28 16:05:36,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:05:36,020 INFO L93 Difference]: Finished difference Result 129 states and 238 transitions. [2022-01-28 16:05:36,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-28 16:05:36,020 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 [2022-01-28 16:05:36,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:05:36,021 INFO L225 Difference]: With dead ends: 129 [2022-01-28 16:05:36,021 INFO L226 Difference]: Without dead ends: 129 [2022-01-28 16:05:36,021 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-01-28 16:05:36,022 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 39 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 16:05:36,022 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 37 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 16:05:36,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-01-28 16:05:36,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 70. [2022-01-28 16:05:36,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 2.0) internal successors, (138), 69 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:36,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 138 transitions. [2022-01-28 16:05:36,025 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 138 transitions. Word has length 17 [2022-01-28 16:05:36,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:05:36,025 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 138 transitions. [2022-01-28 16:05:36,025 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) [2022-01-28 16:05:36,025 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 138 transitions. [2022-01-28 16:05:36,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-28 16:05:36,025 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:05:36,025 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:05:36,050 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-28 16:05:36,225 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,SelfDestructingSolverStorable22 [2022-01-28 16:05:36,226 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:05:36,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:05:36,226 INFO L85 PathProgramCache]: Analyzing trace with hash -340027212, now seen corresponding path program 2 times [2022-01-28 16:05:36,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:05:36,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042040177] [2022-01-28 16:05:36,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:05:36,227 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:05:36,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:05:36,249 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:05:36,250 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:05:36,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042040177] [2022-01-28 16:05:36,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042040177] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 16:05:36,250 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 16:05:36,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-28 16:05:36,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165710827] [2022-01-28 16:05:36,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 16:05:36,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-28 16:05:36,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:05:36,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-28 16:05:36,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-28 16:05:36,253 INFO L87 Difference]: Start difference. First operand 70 states and 138 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) [2022-01-28 16:05:36,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:05:36,317 INFO L93 Difference]: Finished difference Result 153 states and 286 transitions. [2022-01-28 16:05:36,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 16:05:36,317 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 [2022-01-28 16:05:36,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:05:36,318 INFO L225 Difference]: With dead ends: 153 [2022-01-28 16:05:36,318 INFO L226 Difference]: Without dead ends: 149 [2022-01-28 16:05:36,318 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-28 16:05:36,319 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 54 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 16:05:36,319 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 34 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 16:05:36,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2022-01-28 16:05:36,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 80. [2022-01-28 16:05:36,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 2.0) internal successors, (158), 79 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) [2022-01-28 16:05:36,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 158 transitions. [2022-01-28 16:05:36,323 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 158 transitions. Word has length 17 [2022-01-28 16:05:36,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:05:36,324 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 158 transitions. [2022-01-28 16:05:36,324 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) [2022-01-28 16:05:36,324 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 158 transitions. [2022-01-28 16:05:36,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-28 16:05:36,324 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:05:36,325 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:05:36,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-28 16:05:36,325 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:05:36,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:05:36,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1008389050, now seen corresponding path program 3 times [2022-01-28 16:05:36,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:05:36,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825898093] [2022-01-28 16:05:36,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:05:36,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:05:36,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:05:36,344 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:05:36,344 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:05:36,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825898093] [2022-01-28 16:05:36,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825898093] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 16:05:36,344 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 16:05:36,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-28 16:05:36,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698825839] [2022-01-28 16:05:36,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 16:05:36,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-28 16:05:36,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:05:36,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-28 16:05:36,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-28 16:05:36,346 INFO L87 Difference]: Start difference. First operand 80 states and 158 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) [2022-01-28 16:05:36,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:05:36,406 INFO L93 Difference]: Finished difference Result 126 states and 243 transitions. [2022-01-28 16:05:36,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 16:05:36,407 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 [2022-01-28 16:05:36,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:05:36,408 INFO L225 Difference]: With dead ends: 126 [2022-01-28 16:05:36,408 INFO L226 Difference]: Without dead ends: 126 [2022-01-28 16:05:36,408 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-28 16:05:36,409 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 42 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 16:05:36,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 54 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 16:05:36,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-01-28 16:05:36,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 72. [2022-01-28 16:05:36,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 2.0) internal successors, (142), 71 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:36,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 142 transitions. [2022-01-28 16:05:36,412 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 142 transitions. Word has length 17 [2022-01-28 16:05:36,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:05:36,412 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 142 transitions. [2022-01-28 16:05:36,412 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) [2022-01-28 16:05:36,412 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 142 transitions. [2022-01-28 16:05:36,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-28 16:05:36,413 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:05:36,413 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:05:36,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-28 16:05:36,414 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:05:36,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:05:36,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1498463670, now seen corresponding path program 3 times [2022-01-28 16:05:36,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:05:36,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113577665] [2022-01-28 16:05:36,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:05:36,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:05:36,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:05:36,437 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:05:36,437 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:05:36,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113577665] [2022-01-28 16:05:36,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113577665] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 16:05:36,437 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 16:05:36,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-28 16:05:36,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065133171] [2022-01-28 16:05:36,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 16:05:36,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-28 16:05:36,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:05:36,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-28 16:05:36,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-28 16:05:36,439 INFO L87 Difference]: Start difference. First operand 72 states and 142 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) [2022-01-28 16:05:36,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:05:36,486 INFO L93 Difference]: Finished difference Result 86 states and 165 transitions. [2022-01-28 16:05:36,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-28 16:05:36,486 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 [2022-01-28 16:05:36,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:05:36,486 INFO L225 Difference]: With dead ends: 86 [2022-01-28 16:05:36,487 INFO L226 Difference]: Without dead ends: 83 [2022-01-28 16:05:36,487 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-28 16:05:36,488 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 43 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 16:05:36,489 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 37 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 16:05:36,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-01-28 16:05:36,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 72. [2022-01-28 16:05:36,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.9859154929577465) internal successors, (141), 71 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:36,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 141 transitions. [2022-01-28 16:05:36,496 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 141 transitions. Word has length 17 [2022-01-28 16:05:36,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:05:36,496 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 141 transitions. [2022-01-28 16:05:36,497 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) [2022-01-28 16:05:36,497 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 141 transitions. [2022-01-28 16:05:36,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-28 16:05:36,497 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:05:36,497 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:05:36,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-28 16:05:36,498 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:05:36,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:05:36,498 INFO L85 PathProgramCache]: Analyzing trace with hash -708996888, now seen corresponding path program 4 times [2022-01-28 16:05:36,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:05:36,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377007743] [2022-01-28 16:05:36,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:05:36,499 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:05:36,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:05:36,518 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:05:36,518 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:05:36,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377007743] [2022-01-28 16:05:36,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377007743] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 16:05:36,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563640793] [2022-01-28 16:05:36,519 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-28 16:05:36,519 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:05:36,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 16:05:36,520 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) [2022-01-28 16:05:36,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-28 16:05:36,547 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-28 16:05:36,547 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 16:05:36,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-28 16:05:36,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 16:05:36,578 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:05:36,578 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 16:05:36,626 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:05:36,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1563640793] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-28 16:05:36,626 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-28 16:05:36,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 7 [2022-01-28 16:05:36,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867889905] [2022-01-28 16:05:36,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 16:05:36,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-28 16:05:36,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:05:36,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-28 16:05:36,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-28 16:05:36,627 INFO L87 Difference]: Start difference. First operand 72 states and 141 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) [2022-01-28 16:05:36,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:05:36,671 INFO L93 Difference]: Finished difference Result 129 states and 236 transitions. [2022-01-28 16:05:36,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-28 16:05:36,671 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 [2022-01-28 16:05:36,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:05:36,672 INFO L225 Difference]: With dead ends: 129 [2022-01-28 16:05:36,672 INFO L226 Difference]: Without dead ends: 129 [2022-01-28 16:05:36,672 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-01-28 16:05:36,673 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 43 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 16:05:36,673 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 44 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 16:05:36,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-01-28 16:05:36,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 72. [2022-01-28 16:05:36,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.9859154929577465) internal successors, (141), 71 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:36,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 141 transitions. [2022-01-28 16:05:36,675 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 141 transitions. Word has length 17 [2022-01-28 16:05:36,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:05:36,675 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 141 transitions. [2022-01-28 16:05:36,675 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) [2022-01-28 16:05:36,676 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 141 transitions. [2022-01-28 16:05:36,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-28 16:05:36,676 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:05:36,676 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:05:36,701 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-28 16:05:36,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:05:36,897 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:05:36,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:05:36,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1612960920, now seen corresponding path program 4 times [2022-01-28 16:05:36,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:05:36,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88039729] [2022-01-28 16:05:36,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:05:36,898 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:05:36,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:05:36,919 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:05:36,920 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:05:36,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88039729] [2022-01-28 16:05:36,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88039729] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 16:05:36,920 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 16:05:36,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-28 16:05:36,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656953615] [2022-01-28 16:05:36,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 16:05:36,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-28 16:05:36,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:05:36,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-28 16:05:36,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-28 16:05:36,921 INFO L87 Difference]: Start difference. First operand 72 states and 141 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) [2022-01-28 16:05:36,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:05:36,982 INFO L93 Difference]: Finished difference Result 113 states and 210 transitions. [2022-01-28 16:05:36,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-28 16:05:36,982 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 [2022-01-28 16:05:36,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:05:36,983 INFO L225 Difference]: With dead ends: 113 [2022-01-28 16:05:36,983 INFO L226 Difference]: Without dead ends: 109 [2022-01-28 16:05:36,984 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-28 16:05:36,984 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 46 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 16:05:36,984 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 36 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 16:05:36,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-01-28 16:05:36,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 82. [2022-01-28 16:05:36,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.9876543209876543) internal successors, (161), 81 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:36,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 161 transitions. [2022-01-28 16:05:36,987 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 161 transitions. Word has length 17 [2022-01-28 16:05:36,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:05:36,987 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 161 transitions. [2022-01-28 16:05:36,987 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) [2022-01-28 16:05:36,987 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 161 transitions. [2022-01-28 16:05:36,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-28 16:05:36,987 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:05:36,987 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:05:36,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-28 16:05:36,988 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:05:36,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:05:36,988 INFO L85 PathProgramCache]: Analyzing trace with hash -264544658, now seen corresponding path program 5 times [2022-01-28 16:05:36,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:05:36,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041879380] [2022-01-28 16:05:36,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:05:36,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:05:36,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:05:37,019 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:05:37,019 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:05:37,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041879380] [2022-01-28 16:05:37,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041879380] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 16:05:37,019 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 16:05:37,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-28 16:05:37,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820833742] [2022-01-28 16:05:37,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 16:05:37,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-28 16:05:37,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:05:37,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-28 16:05:37,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-28 16:05:37,020 INFO L87 Difference]: Start difference. First operand 82 states and 161 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) [2022-01-28 16:05:37,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:05:37,081 INFO L93 Difference]: Finished difference Result 114 states and 216 transitions. [2022-01-28 16:05:37,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-28 16:05:37,082 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 [2022-01-28 16:05:37,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:05:37,082 INFO L225 Difference]: With dead ends: 114 [2022-01-28 16:05:37,082 INFO L226 Difference]: Without dead ends: 114 [2022-01-28 16:05:37,083 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-28 16:05:37,083 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 38 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 16:05:37,083 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 38 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 16:05:37,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-01-28 16:05:37,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 82. [2022-01-28 16:05:37,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.9876543209876543) internal successors, (161), 81 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:37,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 161 transitions. [2022-01-28 16:05:37,086 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 161 transitions. Word has length 17 [2022-01-28 16:05:37,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:05:37,086 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 161 transitions. [2022-01-28 16:05:37,086 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) [2022-01-28 16:05:37,086 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 161 transitions. [2022-01-28 16:05:37,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-28 16:05:37,087 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:05:37,087 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:05:37,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-28 16:05:37,087 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:05:37,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:05:37,087 INFO L85 PathProgramCache]: Analyzing trace with hash 225529962, now seen corresponding path program 5 times [2022-01-28 16:05:37,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:05:37,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135293263] [2022-01-28 16:05:37,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:05:37,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:05:37,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:05:37,104 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:05:37,104 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:05:37,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135293263] [2022-01-28 16:05:37,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135293263] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 16:05:37,104 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 16:05:37,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-28 16:05:37,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487139847] [2022-01-28 16:05:37,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 16:05:37,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-28 16:05:37,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:05:37,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-28 16:05:37,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-28 16:05:37,105 INFO L87 Difference]: Start difference. First operand 82 states and 161 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) [2022-01-28 16:05:37,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:05:37,171 INFO L93 Difference]: Finished difference Result 139 states and 260 transitions. [2022-01-28 16:05:37,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 16:05:37,171 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 [2022-01-28 16:05:37,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:05:37,172 INFO L225 Difference]: With dead ends: 139 [2022-01-28 16:05:37,172 INFO L226 Difference]: Without dead ends: 136 [2022-01-28 16:05:37,172 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-28 16:05:37,173 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 51 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 16:05:37,173 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 38 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 16:05:37,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2022-01-28 16:05:37,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 81. [2022-01-28 16:05:37,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.975) internal successors, (158), 80 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) [2022-01-28 16:05:37,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 158 transitions. [2022-01-28 16:05:37,176 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 158 transitions. Word has length 17 [2022-01-28 16:05:37,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:05:37,176 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 158 transitions. [2022-01-28 16:05:37,176 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) [2022-01-28 16:05:37,176 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 158 transitions. [2022-01-28 16:05:37,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-28 16:05:37,176 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:05:37,176 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:05:37,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-28 16:05:37,177 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:05:37,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:05:37,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1073022556, now seen corresponding path program 6 times [2022-01-28 16:05:37,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:05:37,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629745530] [2022-01-28 16:05:37,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:05:37,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:05:37,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:05:37,205 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:05:37,205 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:05:37,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629745530] [2022-01-28 16:05:37,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629745530] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 16:05:37,205 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 16:05:37,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-28 16:05:37,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240027863] [2022-01-28 16:05:37,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 16:05:37,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-28 16:05:37,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:05:37,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-28 16:05:37,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-28 16:05:37,206 INFO L87 Difference]: Start difference. First operand 81 states and 158 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) [2022-01-28 16:05:37,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:05:37,262 INFO L93 Difference]: Finished difference Result 105 states and 195 transitions. [2022-01-28 16:05:37,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-28 16:05:37,263 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 [2022-01-28 16:05:37,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:05:37,263 INFO L225 Difference]: With dead ends: 105 [2022-01-28 16:05:37,263 INFO L226 Difference]: Without dead ends: 105 [2022-01-28 16:05:37,264 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-28 16:05:37,264 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 31 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 16:05:37,264 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 51 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 16:05:37,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-01-28 16:05:37,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 68. [2022-01-28 16:05:37,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.9701492537313432) internal successors, (132), 67 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:37,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 132 transitions. [2022-01-28 16:05:37,267 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 132 transitions. Word has length 17 [2022-01-28 16:05:37,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:05:37,267 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 132 transitions. [2022-01-28 16:05:37,267 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) [2022-01-28 16:05:37,267 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 132 transitions. [2022-01-28 16:05:37,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-28 16:05:37,267 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:05:37,267 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:05:37,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-28 16:05:37,268 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:05:37,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:05:37,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1140611450, now seen corresponding path program 6 times [2022-01-28 16:05:37,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:05:37,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798959282] [2022-01-28 16:05:37,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:05:37,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:05:37,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:05:37,288 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:05:37,289 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:05:37,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798959282] [2022-01-28 16:05:37,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798959282] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 16:05:37,289 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 16:05:37,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-28 16:05:37,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971315807] [2022-01-28 16:05:37,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 16:05:37,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-28 16:05:37,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:05:37,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-28 16:05:37,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-28 16:05:37,290 INFO L87 Difference]: Start difference. First operand 68 states and 132 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) [2022-01-28 16:05:37,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:05:37,341 INFO L93 Difference]: Finished difference Result 82 states and 155 transitions. [2022-01-28 16:05:37,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-28 16:05:37,342 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 [2022-01-28 16:05:37,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:05:37,342 INFO L225 Difference]: With dead ends: 82 [2022-01-28 16:05:37,342 INFO L226 Difference]: Without dead ends: 76 [2022-01-28 16:05:37,343 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-28 16:05:37,344 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 30 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 16:05:37,344 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 44 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 16:05:37,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-01-28 16:05:37,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 68. [2022-01-28 16:05:37,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.955223880597015) internal successors, (131), 67 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:37,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 131 transitions. [2022-01-28 16:05:37,347 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 131 transitions. Word has length 17 [2022-01-28 16:05:37,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:05:37,347 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 131 transitions. [2022-01-28 16:05:37,347 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) [2022-01-28 16:05:37,347 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 131 transitions. [2022-01-28 16:05:37,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-28 16:05:37,347 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:05:37,348 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:05:37,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-01-28 16:05:37,348 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:05:37,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:05:37,348 INFO L85 PathProgramCache]: Analyzing trace with hash -120901544, now seen corresponding path program 1 times [2022-01-28 16:05:37,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:05:37,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623669029] [2022-01-28 16:05:37,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:05:37,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:05:37,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:05:37,468 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:05:37,468 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:05:37,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623669029] [2022-01-28 16:05:37,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623669029] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 16:05:37,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267323501] [2022-01-28 16:05:37,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:05:37,469 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:05:37,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 16:05:37,470 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 16:05:37,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-28 16:05:37,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:05:37,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-28 16:05:37,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 16:05:37,724 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:05:37,724 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 16:05:38,109 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:05:38,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267323501] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 16:05:38,110 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 16:05:38,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26 [2022-01-28 16:05:38,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802839329] [2022-01-28 16:05:38,110 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 16:05:38,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-28 16:05:38,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:05:38,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-28 16:05:38,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=595, Unknown=0, NotChecked=0, Total=702 [2022-01-28 16:05:38,112 INFO L87 Difference]: Start difference. First operand 68 states and 131 transitions. Second operand has 27 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 26 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:39,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:05:39,706 INFO L93 Difference]: Finished difference Result 227 states and 416 transitions. [2022-01-28 16:05:39,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-28 16:05:39,707 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 26 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-28 16:05:39,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:05:39,707 INFO L225 Difference]: With dead ends: 227 [2022-01-28 16:05:39,708 INFO L226 Difference]: Without dead ends: 173 [2022-01-28 16:05:39,709 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 17 SyntacticMatches, 5 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 971 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=690, Invalid=2970, Unknown=0, NotChecked=0, Total=3660 [2022-01-28 16:05:39,709 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 207 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 1148 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 1224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-28 16:05:39,709 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [207 Valid, 328 Invalid, 1224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1148 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-28 16:05:39,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-01-28 16:05:39,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 72. [2022-01-28 16:05:39,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.9154929577464788) internal successors, (136), 71 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:39,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 136 transitions. [2022-01-28 16:05:39,712 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 136 transitions. Word has length 19 [2022-01-28 16:05:39,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:05:39,712 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 136 transitions. [2022-01-28 16:05:39,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 26 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:39,712 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 136 transitions. [2022-01-28 16:05:39,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-28 16:05:39,712 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:05:39,713 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:05:39,738 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-28 16:05:39,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:05:39,927 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:05:39,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:05:39,928 INFO L85 PathProgramCache]: Analyzing trace with hash -785598470, now seen corresponding path program 2 times [2022-01-28 16:05:39,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:05:39,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30826003] [2022-01-28 16:05:39,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:05:39,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:05:39,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:05:40,043 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:05:40,043 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:05:40,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30826003] [2022-01-28 16:05:40,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30826003] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 16:05:40,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320677133] [2022-01-28 16:05:40,043 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-28 16:05:40,043 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:05:40,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 16:05:40,047 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 16:05:40,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-28 16:05:40,070 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-28 16:05:40,070 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 16:05:40,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-28 16:05:40,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 16:05:40,322 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:05:40,322 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 16:05:40,709 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:05:40,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320677133] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 16:05:40,709 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 16:05:40,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26 [2022-01-28 16:05:40,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830415378] [2022-01-28 16:05:40,710 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 16:05:40,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-28 16:05:40,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:05:40,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-28 16:05:40,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=590, Unknown=0, NotChecked=0, Total=702 [2022-01-28 16:05:40,711 INFO L87 Difference]: Start difference. First operand 72 states and 136 transitions. Second operand has 27 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 26 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:42,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:05:42,068 INFO L93 Difference]: Finished difference Result 205 states and 371 transitions. [2022-01-28 16:05:42,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-28 16:05:42,068 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 26 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-28 16:05:42,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:05:42,069 INFO L225 Difference]: With dead ends: 205 [2022-01-28 16:05:42,069 INFO L226 Difference]: Without dead ends: 167 [2022-01-28 16:05:42,070 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 17 SyntacticMatches, 5 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 925 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=669, Invalid=2991, Unknown=0, NotChecked=0, Total=3660 [2022-01-28 16:05:42,070 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 151 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 806 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-28 16:05:42,070 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 197 Invalid, 890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 806 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-28 16:05:42,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2022-01-28 16:05:42,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 75. [2022-01-28 16:05:42,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.9324324324324325) internal successors, (143), 74 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:42,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 143 transitions. [2022-01-28 16:05:42,073 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 143 transitions. Word has length 19 [2022-01-28 16:05:42,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:05:42,073 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 143 transitions. [2022-01-28 16:05:42,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 26 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:42,073 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 143 transitions. [2022-01-28 16:05:42,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-28 16:05:42,074 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:05:42,074 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:05:42,097 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-28 16:05:42,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-01-28 16:05:42,291 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:05:42,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:05:42,292 INFO L85 PathProgramCache]: Analyzing trace with hash -34197562, now seen corresponding path program 3 times [2022-01-28 16:05:42,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:05:42,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464526187] [2022-01-28 16:05:42,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:05:42,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:05:42,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:05:42,395 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:05:42,396 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:05:42,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464526187] [2022-01-28 16:05:42,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464526187] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 16:05:42,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519681906] [2022-01-28 16:05:42,396 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-28 16:05:42,396 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:05:42,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 16:05:42,400 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 16:05:42,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-28 16:05:42,422 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-28 16:05:42,423 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 16:05:42,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-28 16:05:42,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 16:05:42,690 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:05:42,691 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 16:05:43,053 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:05:43,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519681906] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 16:05:43,053 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 16:05:43,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26 [2022-01-28 16:05:43,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244558712] [2022-01-28 16:05:43,053 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 16:05:43,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-28 16:05:43,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:05:43,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-28 16:05:43,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=588, Unknown=0, NotChecked=0, Total=702 [2022-01-28 16:05:43,055 INFO L87 Difference]: Start difference. First operand 75 states and 143 transitions. Second operand has 27 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 26 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:44,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:05:44,728 INFO L93 Difference]: Finished difference Result 221 states and 412 transitions. [2022-01-28 16:05:44,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-28 16:05:44,729 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 26 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-28 16:05:44,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:05:44,730 INFO L225 Difference]: With dead ends: 221 [2022-01-28 16:05:44,730 INFO L226 Difference]: Without dead ends: 195 [2022-01-28 16:05:44,731 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 17 SyntacticMatches, 5 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1353 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=887, Invalid=3943, Unknown=0, NotChecked=0, Total=4830 [2022-01-28 16:05:44,732 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 166 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 854 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-28 16:05:44,732 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [166 Valid, 191 Invalid, 976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 854 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-28 16:05:44,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2022-01-28 16:05:44,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 82. [2022-01-28 16:05:44,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.9876543209876543) internal successors, (161), 81 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:44,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 161 transitions. [2022-01-28 16:05:44,735 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 161 transitions. Word has length 19 [2022-01-28 16:05:44,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:05:44,735 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 161 transitions. [2022-01-28 16:05:44,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 26 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:44,735 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 161 transitions. [2022-01-28 16:05:44,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-28 16:05:44,735 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:05:44,735 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:05:44,759 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-01-28 16:05:44,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:05:44,943 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:05:44,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:05:44,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1360463848, now seen corresponding path program 4 times [2022-01-28 16:05:44,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:05:44,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339120713] [2022-01-28 16:05:44,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:05:44,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:05:44,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:05:45,060 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:05:45,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:05:45,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339120713] [2022-01-28 16:05:45,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339120713] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 16:05:45,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681402325] [2022-01-28 16:05:45,061 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-28 16:05:45,061 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:05:45,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 16:05:45,062 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 16:05:45,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-28 16:05:45,083 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-28 16:05:45,083 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 16:05:45,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-28 16:05:45,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 16:05:45,336 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:05:45,336 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 16:05:45,554 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:05:45,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [681402325] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 16:05:45,554 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 16:05:45,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 23 [2022-01-28 16:05:45,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236106535] [2022-01-28 16:05:45,555 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 16:05:45,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-28 16:05:45,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:05:45,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-28 16:05:45,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=469, Unknown=0, NotChecked=0, Total=552 [2022-01-28 16:05:45,556 INFO L87 Difference]: Start difference. First operand 82 states and 161 transitions. Second operand has 24 states, 24 states have (on average 1.625) internal successors, (39), 23 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:46,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:05:46,007 INFO L93 Difference]: Finished difference Result 131 states and 253 transitions. [2022-01-28 16:05:46,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-28 16:05:46,008 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.625) internal successors, (39), 23 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-28 16:05:46,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:05:46,008 INFO L225 Difference]: With dead ends: 131 [2022-01-28 16:05:46,008 INFO L226 Difference]: Without dead ends: 121 [2022-01-28 16:05:46,009 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 20 SyntacticMatches, 5 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=233, Invalid=1027, Unknown=0, NotChecked=0, Total=1260 [2022-01-28 16:05:46,009 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 114 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-28 16:05:46,009 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 227 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-28 16:05:46,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2022-01-28 16:05:46,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 102. [2022-01-28 16:05:46,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 2.00990099009901) internal successors, (203), 101 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:46,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 203 transitions. [2022-01-28 16:05:46,012 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 203 transitions. Word has length 19 [2022-01-28 16:05:46,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:05:46,013 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 203 transitions. [2022-01-28 16:05:46,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.625) internal successors, (39), 23 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:46,013 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 203 transitions. [2022-01-28 16:05:46,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-28 16:05:46,013 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:05:46,013 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:05:46,038 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-01-28 16:05:46,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:05:46,231 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:05:46,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:05:46,232 INFO L85 PathProgramCache]: Analyzing trace with hash -690419646, now seen corresponding path program 5 times [2022-01-28 16:05:46,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:05:46,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410391423] [2022-01-28 16:05:46,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:05:46,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:05:46,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:05:46,345 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:05:46,345 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:05:46,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410391423] [2022-01-28 16:05:46,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410391423] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 16:05:46,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179347607] [2022-01-28 16:05:46,345 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-28 16:05:46,346 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:05:46,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 16:05:46,347 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 16:05:46,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-28 16:05:46,369 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-28 16:05:46,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 16:05:46,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-28 16:05:46,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 16:05:46,606 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:05:46,607 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-28 16:05:46,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [179347607] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 16:05:46,607 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-28 16:05:46,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 18 [2022-01-28 16:05:46,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234458583] [2022-01-28 16:05:46,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 16:05:46,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-28 16:05:46,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:05:46,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-28 16:05:46,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2022-01-28 16:05:46,610 INFO L87 Difference]: Start difference. First operand 102 states and 203 transitions. Second operand has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:46,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:05:46,665 INFO L93 Difference]: Finished difference Result 115 states and 220 transitions. [2022-01-28 16:05:46,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-28 16:05:46,666 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-28 16:05:46,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:05:46,666 INFO L225 Difference]: With dead ends: 115 [2022-01-28 16:05:46,666 INFO L226 Difference]: Without dead ends: 97 [2022-01-28 16:05:46,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2022-01-28 16:05:46,667 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 28 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 16:05:46,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 88 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 16:05:46,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-01-28 16:05:46,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 95. [2022-01-28 16:05:46,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 2.021276595744681) internal successors, (190), 94 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:46,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 190 transitions. [2022-01-28 16:05:46,670 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 190 transitions. Word has length 19 [2022-01-28 16:05:46,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:05:46,670 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 190 transitions. [2022-01-28 16:05:46,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:46,670 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 190 transitions. [2022-01-28 16:05:46,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-28 16:05:46,670 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:05:46,671 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:05:46,694 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-01-28 16:05:46,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-01-28 16:05:46,871 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:05:46,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:05:46,872 INFO L85 PathProgramCache]: Analyzing trace with hash -2010170954, now seen corresponding path program 6 times [2022-01-28 16:05:46,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:05:46,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110053949] [2022-01-28 16:05:46,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:05:46,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:05:46,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:05:46,975 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:05:46,976 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:05:46,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110053949] [2022-01-28 16:05:46,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110053949] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 16:05:46,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579251919] [2022-01-28 16:05:46,976 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-28 16:05:46,976 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:05:46,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 16:05:46,977 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 16:05:46,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-01-28 16:05:46,996 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-28 16:05:46,996 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 16:05:46,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-28 16:05:46,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 16:05:47,227 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:05:47,227 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-28 16:05:47,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [579251919] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 16:05:47,227 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-28 16:05:47,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 18 [2022-01-28 16:05:47,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845037029] [2022-01-28 16:05:47,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 16:05:47,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-28 16:05:47,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:05:47,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-28 16:05:47,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2022-01-28 16:05:47,228 INFO L87 Difference]: Start difference. First operand 95 states and 190 transitions. Second operand has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:47,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:05:47,311 INFO L93 Difference]: Finished difference Result 123 states and 236 transitions. [2022-01-28 16:05:47,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-28 16:05:47,311 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-28 16:05:47,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:05:47,312 INFO L225 Difference]: With dead ends: 123 [2022-01-28 16:05:47,312 INFO L226 Difference]: Without dead ends: 108 [2022-01-28 16:05:47,312 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2022-01-28 16:05:47,312 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 24 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 16:05:47,312 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 73 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 16:05:47,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-01-28 16:05:47,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 102. [2022-01-28 16:05:47,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 2.00990099009901) internal successors, (203), 101 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:47,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 203 transitions. [2022-01-28 16:05:47,315 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 203 transitions. Word has length 19 [2022-01-28 16:05:47,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:05:47,315 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 203 transitions. [2022-01-28 16:05:47,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:47,315 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 203 transitions. [2022-01-28 16:05:47,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-28 16:05:47,315 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:05:47,316 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:05:47,335 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-01-28 16:05:47,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-01-28 16:05:47,527 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:05:47,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:05:47,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1340126752, now seen corresponding path program 7 times [2022-01-28 16:05:47,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:05:47,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888583998] [2022-01-28 16:05:47,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:05:47,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:05:47,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:05:47,636 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:05:47,636 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:05:47,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888583998] [2022-01-28 16:05:47,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888583998] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 16:05:47,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [337642323] [2022-01-28 16:05:47,637 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-28 16:05:47,637 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:05:47,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 16:05:47,640 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 16:05:47,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-01-28 16:05:47,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:05:47,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-28 16:05:47,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 16:05:47,925 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:05:47,926 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 16:05:48,251 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:05:48,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [337642323] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 16:05:48,251 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 16:05:48,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-01-28 16:05:48,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518718641] [2022-01-28 16:05:48,251 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 16:05:48,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-28 16:05:48,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:05:48,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-28 16:05:48,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=541, Unknown=0, NotChecked=0, Total=650 [2022-01-28 16:05:48,252 INFO L87 Difference]: Start difference. First operand 102 states and 203 transitions. Second operand has 26 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 25 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:48,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:05:48,638 INFO L93 Difference]: Finished difference Result 145 states and 267 transitions. [2022-01-28 16:05:48,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-28 16:05:48,639 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 25 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-28 16:05:48,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:05:48,639 INFO L225 Difference]: With dead ends: 145 [2022-01-28 16:05:48,639 INFO L226 Difference]: Without dead ends: 133 [2022-01-28 16:05:48,640 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 18 SyntacticMatches, 5 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=281, Invalid=1201, Unknown=0, NotChecked=0, Total=1482 [2022-01-28 16:05:48,640 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 82 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-28 16:05:48,640 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 130 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-28 16:05:48,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2022-01-28 16:05:48,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 99. [2022-01-28 16:05:48,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 2.010204081632653) internal successors, (197), 98 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:48,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 197 transitions. [2022-01-28 16:05:48,643 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 197 transitions. Word has length 19 [2022-01-28 16:05:48,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:05:48,643 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 197 transitions. [2022-01-28 16:05:48,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 25 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:48,643 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 197 transitions. [2022-01-28 16:05:48,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-28 16:05:48,643 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:05:48,643 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:05:48,663 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-01-28 16:05:48,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-01-28 16:05:48,851 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:05:48,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:05:48,852 INFO L85 PathProgramCache]: Analyzing trace with hash -328334044, now seen corresponding path program 8 times [2022-01-28 16:05:48,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:05:48,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954843189] [2022-01-28 16:05:48,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:05:48,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:05:48,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:05:48,942 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:05:48,942 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:05:48,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954843189] [2022-01-28 16:05:48,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954843189] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 16:05:48,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101181431] [2022-01-28 16:05:48,942 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-28 16:05:48,942 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:05:48,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 16:05:48,943 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 16:05:48,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-01-28 16:05:48,961 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-28 16:05:48,961 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 16:05:48,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-28 16:05:48,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 16:05:49,196 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:05:49,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 16:05:49,479 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:05:49,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [101181431] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 16:05:49,479 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 16:05:49,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-01-28 16:05:49,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146857969] [2022-01-28 16:05:49,480 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 16:05:49,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-28 16:05:49,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:05:49,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-28 16:05:49,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=538, Unknown=0, NotChecked=0, Total=650 [2022-01-28 16:05:49,481 INFO L87 Difference]: Start difference. First operand 99 states and 197 transitions. Second operand has 26 states, 26 states have (on average 1.5) internal successors, (39), 25 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:49,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:05:49,956 INFO L93 Difference]: Finished difference Result 153 states and 287 transitions. [2022-01-28 16:05:49,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-28 16:05:49,956 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.5) internal successors, (39), 25 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-28 16:05:49,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:05:49,957 INFO L225 Difference]: With dead ends: 153 [2022-01-28 16:05:49,957 INFO L226 Difference]: Without dead ends: 136 [2022-01-28 16:05:49,957 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 18 SyntacticMatches, 5 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 365 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=335, Invalid=1305, Unknown=0, NotChecked=0, Total=1640 [2022-01-28 16:05:49,957 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 104 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-28 16:05:49,957 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 128 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 455 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-28 16:05:49,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2022-01-28 16:05:49,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 98. [2022-01-28 16:05:49,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 1.9793814432989691) internal successors, (192), 97 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:49,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 192 transitions. [2022-01-28 16:05:49,960 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 192 transitions. Word has length 19 [2022-01-28 16:05:49,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:05:49,960 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 192 transitions. [2022-01-28 16:05:49,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.5) internal successors, (39), 25 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:49,960 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 192 transitions. [2022-01-28 16:05:49,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-28 16:05:49,961 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:05:49,961 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:05:49,983 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-01-28 16:05:50,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-01-28 16:05:50,183 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:05:50,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:05:50,183 INFO L85 PathProgramCache]: Analyzing trace with hash 341710158, now seen corresponding path program 9 times [2022-01-28 16:05:50,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:05:50,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229891014] [2022-01-28 16:05:50,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:05:50,184 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:05:50,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:05:50,289 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:05:50,290 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:05:50,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229891014] [2022-01-28 16:05:50,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229891014] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 16:05:50,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330955523] [2022-01-28 16:05:50,290 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-28 16:05:50,290 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:05:50,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 16:05:50,291 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 16:05:50,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-01-28 16:05:50,313 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-28 16:05:50,313 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 16:05:50,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-28 16:05:50,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 16:05:50,561 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:05:50,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 16:05:50,868 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:05:50,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1330955523] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 16:05:50,868 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 16:05:50,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-01-28 16:05:50,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018122514] [2022-01-28 16:05:50,868 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 16:05:50,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-28 16:05:50,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:05:50,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-28 16:05:50,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=537, Unknown=0, NotChecked=0, Total=650 [2022-01-28 16:05:50,869 INFO L87 Difference]: Start difference. First operand 98 states and 192 transitions. Second operand has 26 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 25 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:51,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:05:51,307 INFO L93 Difference]: Finished difference Result 131 states and 239 transitions. [2022-01-28 16:05:51,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-28 16:05:51,308 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 25 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-28 16:05:51,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:05:51,308 INFO L225 Difference]: With dead ends: 131 [2022-01-28 16:05:51,308 INFO L226 Difference]: Without dead ends: 120 [2022-01-28 16:05:51,309 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 18 SyntacticMatches, 5 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=324, Invalid=1236, Unknown=0, NotChecked=0, Total=1560 [2022-01-28 16:05:51,309 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 81 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-28 16:05:51,309 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 171 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 515 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-28 16:05:51,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-01-28 16:05:51,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 95. [2022-01-28 16:05:51,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.9893617021276595) internal successors, (187), 94 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:51,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 187 transitions. [2022-01-28 16:05:51,312 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 187 transitions. Word has length 19 [2022-01-28 16:05:51,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:05:51,312 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 187 transitions. [2022-01-28 16:05:51,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 25 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:51,312 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 187 transitions. [2022-01-28 16:05:51,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-28 16:05:51,312 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:05:51,312 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:05:51,330 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-01-28 16:05:51,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:05:51,519 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:05:51,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:05:51,520 INFO L85 PathProgramCache]: Analyzing trace with hash 747377112, now seen corresponding path program 10 times [2022-01-28 16:05:51,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:05:51,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891211433] [2022-01-28 16:05:51,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:05:51,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:05:51,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:05:51,613 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:05:51,613 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:05:51,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891211433] [2022-01-28 16:05:51,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891211433] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 16:05:51,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617156621] [2022-01-28 16:05:51,613 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-28 16:05:51,614 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:05:51,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 16:05:51,614 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 16:05:51,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-01-28 16:05:51,631 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-28 16:05:51,631 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 16:05:51,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-28 16:05:51,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 16:05:51,841 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:05:51,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 16:05:52,034 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:05:52,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1617156621] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 16:05:52,034 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 16:05:52,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 23 [2022-01-28 16:05:52,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524956690] [2022-01-28 16:05:52,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 16:05:52,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-28 16:05:52,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:05:52,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-28 16:05:52,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=467, Unknown=0, NotChecked=0, Total=552 [2022-01-28 16:05:52,035 INFO L87 Difference]: Start difference. First operand 95 states and 187 transitions. Second operand has 24 states, 24 states have (on average 1.625) internal successors, (39), 23 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:53,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:05:53,600 INFO L93 Difference]: Finished difference Result 220 states and 451 transitions. [2022-01-28 16:05:53,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-01-28 16:05:53,600 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.625) internal successors, (39), 23 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-28 16:05:53,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:05:53,601 INFO L225 Difference]: With dead ends: 220 [2022-01-28 16:05:53,601 INFO L226 Difference]: Without dead ends: 205 [2022-01-28 16:05:53,602 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 20 SyntacticMatches, 5 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1573 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1099, Invalid=4451, Unknown=0, NotChecked=0, Total=5550 [2022-01-28 16:05:53,602 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 208 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 689 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-28 16:05:53,602 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [208 Valid, 166 Invalid, 830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 689 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-28 16:05:53,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2022-01-28 16:05:53,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 135. [2022-01-28 16:05:53,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 134 states have (on average 2.1417910447761193) internal successors, (287), 134 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:53,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 287 transitions. [2022-01-28 16:05:53,606 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 287 transitions. Word has length 19 [2022-01-28 16:05:53,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:05:53,606 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 287 transitions. [2022-01-28 16:05:53,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.625) internal successors, (39), 23 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:53,607 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 287 transitions. [2022-01-28 16:05:53,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-28 16:05:53,607 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:05:53,607 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:05:53,631 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-01-28 16:05:53,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2022-01-28 16:05:53,825 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:05:53,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:05:53,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1417421314, now seen corresponding path program 11 times [2022-01-28 16:05:53,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:05:53,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818203924] [2022-01-28 16:05:53,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:05:53,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:05:53,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:05:53,925 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:05:53,925 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:05:53,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818203924] [2022-01-28 16:05:53,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818203924] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 16:05:53,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505090206] [2022-01-28 16:05:53,925 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-28 16:05:53,925 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:05:53,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 16:05:53,926 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 16:05:53,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-01-28 16:05:53,955 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-28 16:05:53,956 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 16:05:53,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-28 16:05:53,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 16:05:54,156 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:05:54,156 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-28 16:05:54,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [505090206] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 16:05:54,156 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-28 16:05:54,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 18 [2022-01-28 16:05:54,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731840305] [2022-01-28 16:05:54,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 16:05:54,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-28 16:05:54,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:05:54,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-28 16:05:54,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2022-01-28 16:05:54,157 INFO L87 Difference]: Start difference. First operand 135 states and 287 transitions. Second operand has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:54,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:05:54,261 INFO L93 Difference]: Finished difference Result 151 states and 311 transitions. [2022-01-28 16:05:54,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-28 16:05:54,262 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-28 16:05:54,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:05:54,262 INFO L225 Difference]: With dead ends: 151 [2022-01-28 16:05:54,262 INFO L226 Difference]: Without dead ends: 141 [2022-01-28 16:05:54,263 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=372, Unknown=0, NotChecked=0, Total=462 [2022-01-28 16:05:54,263 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 32 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 16:05:54,263 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 67 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 16:05:54,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2022-01-28 16:05:54,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 132. [2022-01-28 16:05:54,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 2.1374045801526718) internal successors, (280), 131 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:54,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 280 transitions. [2022-01-28 16:05:54,266 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 280 transitions. Word has length 19 [2022-01-28 16:05:54,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:05:54,266 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 280 transitions. [2022-01-28 16:05:54,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:54,267 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 280 transitions. [2022-01-28 16:05:54,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-28 16:05:54,267 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:05:54,267 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:05:54,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-01-28 16:05:54,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:05:54,489 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:05:54,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:05:54,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1214893294, now seen corresponding path program 12 times [2022-01-28 16:05:54,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:05:54,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499183567] [2022-01-28 16:05:54,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:05:54,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:05:54,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:05:54,580 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:05:54,581 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:05:54,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499183567] [2022-01-28 16:05:54,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499183567] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 16:05:54,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40289689] [2022-01-28 16:05:54,581 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-28 16:05:54,581 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:05:54,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 16:05:54,582 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 16:05:54,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-01-28 16:05:54,599 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-28 16:05:54,599 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 16:05:54,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-28 16:05:54,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 16:05:54,788 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:05:54,789 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 16:05:55,025 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:05:55,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [40289689] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 16:05:55,025 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 16:05:55,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 24 [2022-01-28 16:05:55,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013663316] [2022-01-28 16:05:55,026 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 16:05:55,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-28 16:05:55,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:05:55,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-28 16:05:55,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=500, Unknown=0, NotChecked=0, Total=600 [2022-01-28 16:05:55,027 INFO L87 Difference]: Start difference. First operand 132 states and 280 transitions. Second operand has 25 states, 25 states have (on average 1.48) internal successors, (37), 24 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:55,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:05:55,481 INFO L93 Difference]: Finished difference Result 151 states and 308 transitions. [2022-01-28 16:05:55,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-28 16:05:55,481 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.48) internal successors, (37), 24 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-28 16:05:55,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:05:55,482 INFO L225 Difference]: With dead ends: 151 [2022-01-28 16:05:55,482 INFO L226 Difference]: Without dead ends: 133 [2022-01-28 16:05:55,482 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 20 SyntacticMatches, 4 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=306, Invalid=1176, Unknown=0, NotChecked=0, Total=1482 [2022-01-28 16:05:55,482 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 94 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-28 16:05:55,482 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 176 Invalid, 624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-28 16:05:55,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2022-01-28 16:05:55,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 128. [2022-01-28 16:05:55,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 127 states have (on average 2.078740157480315) internal successors, (264), 127 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:55,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 264 transitions. [2022-01-28 16:05:55,485 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 264 transitions. Word has length 19 [2022-01-28 16:05:55,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:05:55,485 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 264 transitions. [2022-01-28 16:05:55,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.48) internal successors, (37), 24 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:55,485 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 264 transitions. [2022-01-28 16:05:55,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-28 16:05:55,485 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:05:55,485 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:05:55,501 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-01-28 16:05:55,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:05:55,686 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:05:55,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:05:55,686 INFO L85 PathProgramCache]: Analyzing trace with hash -2071772430, now seen corresponding path program 13 times [2022-01-28 16:05:55,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:05:55,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561889785] [2022-01-28 16:05:55,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:05:55,686 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:05:55,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:05:55,787 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:05:55,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:05:55,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561889785] [2022-01-28 16:05:55,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561889785] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 16:05:55,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306398242] [2022-01-28 16:05:55,787 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-28 16:05:55,787 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:05:55,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 16:05:55,792 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 16:05:55,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-01-28 16:05:55,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:05:55,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-28 16:05:55,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 16:05:56,078 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:05:56,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 16:05:56,386 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:05:56,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306398242] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 16:05:56,387 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 16:05:56,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26 [2022-01-28 16:05:56,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066502456] [2022-01-28 16:05:56,387 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 16:05:56,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-28 16:05:56,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:05:56,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-28 16:05:56,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=591, Unknown=0, NotChecked=0, Total=702 [2022-01-28 16:05:56,388 INFO L87 Difference]: Start difference. First operand 128 states and 264 transitions. Second operand has 27 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 26 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:56,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:05:56,948 INFO L93 Difference]: Finished difference Result 198 states and 396 transitions. [2022-01-28 16:05:56,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-28 16:05:56,948 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 26 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-28 16:05:56,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:05:56,949 INFO L225 Difference]: With dead ends: 198 [2022-01-28 16:05:56,949 INFO L226 Difference]: Without dead ends: 172 [2022-01-28 16:05:56,950 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 17 SyntacticMatches, 5 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 427 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=343, Invalid=1549, Unknown=0, NotChecked=0, Total=1892 [2022-01-28 16:05:56,950 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 77 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-28 16:05:56,950 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 154 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-28 16:05:56,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2022-01-28 16:05:56,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 150. [2022-01-28 16:05:56,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 2.0738255033557045) internal successors, (309), 149 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:56,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 309 transitions. [2022-01-28 16:05:56,953 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 309 transitions. Word has length 19 [2022-01-28 16:05:56,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:05:56,954 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 309 transitions. [2022-01-28 16:05:56,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 26 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:56,954 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 309 transitions. [2022-01-28 16:05:56,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-28 16:05:56,954 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:05:56,954 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:05:56,981 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-01-28 16:05:57,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2022-01-28 16:05:57,177 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:05:57,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:05:57,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1284652870, now seen corresponding path program 14 times [2022-01-28 16:05:57,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:05:57,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334311136] [2022-01-28 16:05:57,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:05:57,178 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:05:57,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:05:57,269 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:05:57,270 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:05:57,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334311136] [2022-01-28 16:05:57,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334311136] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 16:05:57,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78560202] [2022-01-28 16:05:57,270 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-28 16:05:57,270 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:05:57,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 16:05:57,271 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 16:05:57,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-01-28 16:05:57,289 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-28 16:05:57,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 16:05:57,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-28 16:05:57,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 16:05:57,536 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:05:57,536 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 16:05:57,829 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:05:57,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [78560202] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 16:05:57,829 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 16:05:57,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26 [2022-01-28 16:05:57,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794734228] [2022-01-28 16:05:57,830 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 16:05:57,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-28 16:05:57,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:05:57,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-28 16:05:57,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=593, Unknown=0, NotChecked=0, Total=702 [2022-01-28 16:05:57,831 INFO L87 Difference]: Start difference. First operand 150 states and 309 transitions. Second operand has 27 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 26 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:59,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:05:59,151 INFO L93 Difference]: Finished difference Result 303 states and 605 transitions. [2022-01-28 16:05:59,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-01-28 16:05:59,151 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 26 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-28 16:05:59,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:05:59,152 INFO L225 Difference]: With dead ends: 303 [2022-01-28 16:05:59,152 INFO L226 Difference]: Without dead ends: 275 [2022-01-28 16:05:59,153 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 18 SyntacticMatches, 4 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1351 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=777, Invalid=4053, Unknown=0, NotChecked=0, Total=4830 [2022-01-28 16:05:59,154 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 132 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 672 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-28 16:05:59,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 156 Invalid, 778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 672 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-28 16:05:59,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2022-01-28 16:05:59,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 197. [2022-01-28 16:05:59,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 196 states have (on average 2.107142857142857) internal successors, (413), 196 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:59,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 413 transitions. [2022-01-28 16:05:59,158 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 413 transitions. Word has length 19 [2022-01-28 16:05:59,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:05:59,158 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 413 transitions. [2022-01-28 16:05:59,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 26 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:05:59,159 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 413 transitions. [2022-01-28 16:05:59,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-28 16:05:59,159 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:05:59,159 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:05:59,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-01-28 16:05:59,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:05:59,383 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:05:59,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:05:59,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1637792360, now seen corresponding path program 15 times [2022-01-28 16:05:59,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:05:59,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122079326] [2022-01-28 16:05:59,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:05:59,384 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:05:59,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:05:59,471 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:05:59,471 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:05:59,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122079326] [2022-01-28 16:05:59,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122079326] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 16:05:59,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951295393] [2022-01-28 16:05:59,472 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-28 16:05:59,472 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:05:59,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 16:05:59,473 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 16:05:59,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-01-28 16:05:59,489 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-28 16:05:59,490 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 16:05:59,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-28 16:05:59,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 16:05:59,700 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:05:59,700 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 16:05:59,978 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:05:59,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1951295393] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 16:05:59,978 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 16:05:59,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26 [2022-01-28 16:05:59,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018492857] [2022-01-28 16:05:59,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 16:05:59,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-28 16:05:59,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:05:59,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-28 16:05:59,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=590, Unknown=0, NotChecked=0, Total=702 [2022-01-28 16:05:59,979 INFO L87 Difference]: Start difference. First operand 197 states and 413 transitions. Second operand has 27 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 26 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:01,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:06:01,494 INFO L93 Difference]: Finished difference Result 348 states and 711 transitions. [2022-01-28 16:06:01,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-01-28 16:06:01,494 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 26 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-28 16:06:01,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:06:01,495 INFO L225 Difference]: With dead ends: 348 [2022-01-28 16:06:01,495 INFO L226 Difference]: Without dead ends: 323 [2022-01-28 16:06:01,497 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 18 SyntacticMatches, 4 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1481 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=913, Invalid=4343, Unknown=0, NotChecked=0, Total=5256 [2022-01-28 16:06:01,497 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 168 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-28 16:06:01,497 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [168 Valid, 152 Invalid, 730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 588 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-28 16:06:01,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2022-01-28 16:06:01,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 196. [2022-01-28 16:06:01,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 195 states have (on average 2.1435897435897435) internal successors, (418), 195 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:01,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 418 transitions. [2022-01-28 16:06:01,502 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 418 transitions. Word has length 19 [2022-01-28 16:06:01,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:06:01,502 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 418 transitions. [2022-01-28 16:06:01,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 26 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:01,502 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 418 transitions. [2022-01-28 16:06:01,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-28 16:06:01,503 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:06:01,503 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:06:01,521 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-01-28 16:06:01,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:06:01,715 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:06:01,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:06:01,716 INFO L85 PathProgramCache]: Analyzing trace with hash -596154852, now seen corresponding path program 16 times [2022-01-28 16:06:01,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:06:01,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632276356] [2022-01-28 16:06:01,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:06:01,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:06:01,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:06:01,804 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:01,804 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:06:01,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632276356] [2022-01-28 16:06:01,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632276356] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 16:06:01,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860295634] [2022-01-28 16:06:01,804 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-28 16:06:01,804 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:06:01,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 16:06:01,805 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 16:06:01,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-01-28 16:06:01,822 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-28 16:06:01,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 16:06:01,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-28 16:06:01,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 16:06:01,991 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:01,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 16:06:02,232 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:02,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860295634] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 16:06:02,232 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 16:06:02,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 24 [2022-01-28 16:06:02,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987711839] [2022-01-28 16:06:02,233 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 16:06:02,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-28 16:06:02,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:06:02,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-28 16:06:02,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=510, Unknown=0, NotChecked=0, Total=600 [2022-01-28 16:06:02,233 INFO L87 Difference]: Start difference. First operand 196 states and 418 transitions. Second operand has 25 states, 25 states have (on average 1.68) internal successors, (42), 24 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:03,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:06:03,187 INFO L93 Difference]: Finished difference Result 429 states and 838 transitions. [2022-01-28 16:06:03,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-28 16:06:03,187 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.68) internal successors, (42), 24 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-28 16:06:03,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:06:03,189 INFO L225 Difference]: With dead ends: 429 [2022-01-28 16:06:03,189 INFO L226 Difference]: Without dead ends: 381 [2022-01-28 16:06:03,189 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 19 SyntacticMatches, 5 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 710 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=525, Invalid=2555, Unknown=0, NotChecked=0, Total=3080 [2022-01-28 16:06:03,190 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 147 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 662 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-28 16:06:03,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 221 Invalid, 737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 662 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-28 16:06:03,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2022-01-28 16:06:03,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 231. [2022-01-28 16:06:03,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 230 states have (on average 2.1739130434782608) internal successors, (500), 230 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:03,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 500 transitions. [2022-01-28 16:06:03,195 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 500 transitions. Word has length 19 [2022-01-28 16:06:03,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:06:03,195 INFO L470 AbstractCegarLoop]: Abstraction has 231 states and 500 transitions. [2022-01-28 16:06:03,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.68) internal successors, (42), 24 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:03,196 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 500 transitions. [2022-01-28 16:06:03,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-28 16:06:03,196 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:06:03,196 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:06:03,218 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-01-28 16:06:03,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:06:03,411 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:06:03,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:06:03,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1837082966, now seen corresponding path program 17 times [2022-01-28 16:06:03,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:06:03,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229777419] [2022-01-28 16:06:03,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:06:03,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:06:03,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:06:03,521 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:03,522 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:06:03,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229777419] [2022-01-28 16:06:03,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229777419] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 16:06:03,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994949254] [2022-01-28 16:06:03,522 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-28 16:06:03,522 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:06:03,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 16:06:03,524 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 16:06:03,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-01-28 16:06:03,545 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-28 16:06:03,546 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 16:06:03,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-28 16:06:03,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 16:06:03,722 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:03,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 16:06:03,953 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:03,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994949254] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 16:06:03,954 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 16:06:03,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 24 [2022-01-28 16:06:03,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310951003] [2022-01-28 16:06:03,954 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 16:06:03,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-28 16:06:03,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:06:03,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-28 16:06:03,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=498, Unknown=0, NotChecked=0, Total=600 [2022-01-28 16:06:03,955 INFO L87 Difference]: Start difference. First operand 231 states and 500 transitions. Second operand has 25 states, 25 states have (on average 1.6) internal successors, (40), 24 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:04,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:06:04,582 INFO L93 Difference]: Finished difference Result 290 states and 608 transitions. [2022-01-28 16:06:04,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-28 16:06:04,582 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.6) internal successors, (40), 24 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-28 16:06:04,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:06:04,583 INFO L225 Difference]: With dead ends: 290 [2022-01-28 16:06:04,583 INFO L226 Difference]: Without dead ends: 276 [2022-01-28 16:06:04,583 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 20 SyntacticMatches, 4 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=482, Invalid=1870, Unknown=0, NotChecked=0, Total=2352 [2022-01-28 16:06:04,584 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 85 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-28 16:06:04,584 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 108 Invalid, 553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 467 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-28 16:06:04,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2022-01-28 16:06:04,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 225. [2022-01-28 16:06:04,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 224 states have (on average 2.1607142857142856) internal successors, (484), 224 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:04,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 484 transitions. [2022-01-28 16:06:04,588 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 484 transitions. Word has length 19 [2022-01-28 16:06:04,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:06:04,589 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 484 transitions. [2022-01-28 16:06:04,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.6) internal successors, (40), 24 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:04,589 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 484 transitions. [2022-01-28 16:06:04,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-28 16:06:04,589 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:06:04,589 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:06:04,611 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-01-28 16:06:04,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2022-01-28 16:06:04,803 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:06:04,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:06:04,804 INFO L85 PathProgramCache]: Analyzing trace with hash -844367166, now seen corresponding path program 18 times [2022-01-28 16:06:04,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:06:04,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700464553] [2022-01-28 16:06:04,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:06:04,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:06:04,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:06:04,905 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:04,906 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:06:04,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700464553] [2022-01-28 16:06:04,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700464553] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 16:06:04,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650916023] [2022-01-28 16:06:04,906 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-28 16:06:04,906 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:06:04,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 16:06:04,907 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 16:06:04,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-01-28 16:06:04,923 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-28 16:06:04,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 16:06:04,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-28 16:06:04,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 16:06:05,141 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:05,141 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 16:06:05,422 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:05,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [650916023] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 16:06:05,422 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 16:06:05,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-01-28 16:06:05,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031163575] [2022-01-28 16:06:05,422 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 16:06:05,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-28 16:06:05,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:06:05,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-28 16:06:05,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=542, Unknown=0, NotChecked=0, Total=650 [2022-01-28 16:06:05,423 INFO L87 Difference]: Start difference. First operand 225 states and 484 transitions. Second operand has 26 states, 26 states have (on average 1.5) internal successors, (39), 25 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:06,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:06:06,347 INFO L93 Difference]: Finished difference Result 450 states and 908 transitions. [2022-01-28 16:06:06,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-28 16:06:06,347 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.5) internal successors, (39), 25 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-28 16:06:06,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:06:06,348 INFO L225 Difference]: With dead ends: 450 [2022-01-28 16:06:06,348 INFO L226 Difference]: Without dead ends: 430 [2022-01-28 16:06:06,349 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 18 SyntacticMatches, 5 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 892 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=556, Invalid=2750, Unknown=0, NotChecked=0, Total=3306 [2022-01-28 16:06:06,350 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 119 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-28 16:06:06,350 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 148 Invalid, 666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-28 16:06:06,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2022-01-28 16:06:06,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 295. [2022-01-28 16:06:06,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 294 states have (on average 2.173469387755102) internal successors, (639), 294 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:06,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 639 transitions. [2022-01-28 16:06:06,355 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 639 transitions. Word has length 19 [2022-01-28 16:06:06,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:06:06,355 INFO L470 AbstractCegarLoop]: Abstraction has 295 states and 639 transitions. [2022-01-28 16:06:06,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.5) internal successors, (39), 25 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:06,356 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 639 transitions. [2022-01-28 16:06:06,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-28 16:06:06,356 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:06:06,356 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:06:06,378 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-01-28 16:06:06,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2022-01-28 16:06:06,578 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:06:06,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:06:06,578 INFO L85 PathProgramCache]: Analyzing trace with hash 831114656, now seen corresponding path program 19 times [2022-01-28 16:06:06,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:06:06,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460921143] [2022-01-28 16:06:06,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:06:06,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:06:06,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:06:06,670 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:06,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:06:06,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460921143] [2022-01-28 16:06:06,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460921143] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 16:06:06,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890365025] [2022-01-28 16:06:06,670 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-28 16:06:06,670 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:06:06,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 16:06:06,671 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 16:06:06,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-01-28 16:06:06,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:06:06,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-28 16:06:06,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 16:06:06,898 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:06,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 16:06:07,188 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:07,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890365025] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 16:06:07,188 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 16:06:07,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-01-28 16:06:07,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904972953] [2022-01-28 16:06:07,188 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 16:06:07,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-28 16:06:07,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:06:07,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-28 16:06:07,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=531, Unknown=0, NotChecked=0, Total=650 [2022-01-28 16:06:07,189 INFO L87 Difference]: Start difference. First operand 295 states and 639 transitions. Second operand has 26 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 25 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:08,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:06:08,300 INFO L93 Difference]: Finished difference Result 547 states and 1106 transitions. [2022-01-28 16:06:08,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-28 16:06:08,301 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 25 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-28 16:06:08,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:06:08,302 INFO L225 Difference]: With dead ends: 547 [2022-01-28 16:06:08,302 INFO L226 Difference]: Without dead ends: 529 [2022-01-28 16:06:08,303 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 18 SyntacticMatches, 5 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 829 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=683, Invalid=2509, Unknown=0, NotChecked=0, Total=3192 [2022-01-28 16:06:08,303 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 109 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 904 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-28 16:06:08,303 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 227 Invalid, 979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 904 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-28 16:06:08,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2022-01-28 16:06:08,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 295. [2022-01-28 16:06:08,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 294 states have (on average 2.1666666666666665) internal successors, (637), 294 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:08,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 637 transitions. [2022-01-28 16:06:08,310 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 637 transitions. Word has length 19 [2022-01-28 16:06:08,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:06:08,310 INFO L470 AbstractCegarLoop]: Abstraction has 295 states and 637 transitions. [2022-01-28 16:06:08,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 25 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:08,310 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 637 transitions. [2022-01-28 16:06:08,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-28 16:06:08,311 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:06:08,311 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:06:08,332 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-01-28 16:06:08,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:06:08,532 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:06:08,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:06:08,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1184254146, now seen corresponding path program 20 times [2022-01-28 16:06:08,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:06:08,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225314087] [2022-01-28 16:06:08,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:06:08,533 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:06:08,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:06:08,633 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:08,634 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:06:08,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225314087] [2022-01-28 16:06:08,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225314087] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 16:06:08,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185238782] [2022-01-28 16:06:08,634 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-28 16:06:08,634 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:06:08,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 16:06:08,635 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 16:06:08,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-01-28 16:06:08,656 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-28 16:06:08,656 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 16:06:08,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-28 16:06:08,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 16:06:08,850 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:08,850 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 16:06:09,119 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:09,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185238782] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 16:06:09,119 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 16:06:09,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-01-28 16:06:09,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917654412] [2022-01-28 16:06:09,119 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 16:06:09,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-28 16:06:09,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:06:09,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-28 16:06:09,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=527, Unknown=0, NotChecked=0, Total=650 [2022-01-28 16:06:09,120 INFO L87 Difference]: Start difference. First operand 295 states and 637 transitions. Second operand has 26 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 25 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:10,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:06:10,137 INFO L93 Difference]: Finished difference Result 551 states and 1144 transitions. [2022-01-28 16:06:10,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-28 16:06:10,138 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 25 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-28 16:06:10,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:06:10,139 INFO L225 Difference]: With dead ends: 551 [2022-01-28 16:06:10,139 INFO L226 Difference]: Without dead ends: 535 [2022-01-28 16:06:10,140 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 18 SyntacticMatches, 5 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 835 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=730, Invalid=2576, Unknown=0, NotChecked=0, Total=3306 [2022-01-28 16:06:10,140 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 105 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 677 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-28 16:06:10,140 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 148 Invalid, 765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 677 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-28 16:06:10,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2022-01-28 16:06:10,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 294. [2022-01-28 16:06:10,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 293 states have (on average 2.15358361774744) internal successors, (631), 293 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:10,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 631 transitions. [2022-01-28 16:06:10,156 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 631 transitions. Word has length 19 [2022-01-28 16:06:10,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:06:10,156 INFO L470 AbstractCegarLoop]: Abstraction has 294 states and 631 transitions. [2022-01-28 16:06:10,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 25 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:10,156 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 631 transitions. [2022-01-28 16:06:10,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-28 16:06:10,157 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:06:10,157 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:06:10,181 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-01-28 16:06:10,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:06:10,371 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:06:10,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:06:10,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1447256672, now seen corresponding path program 21 times [2022-01-28 16:06:10,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:06:10,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389894393] [2022-01-28 16:06:10,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:06:10,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:06:10,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:06:10,461 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:10,461 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:06:10,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389894393] [2022-01-28 16:06:10,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389894393] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 16:06:10,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666673146] [2022-01-28 16:06:10,462 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-28 16:06:10,462 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:06:10,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 16:06:10,463 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 16:06:10,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-01-28 16:06:10,481 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-28 16:06:10,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 16:06:10,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-28 16:06:10,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 16:06:10,688 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:10,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 16:06:10,965 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:10,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [666673146] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 16:06:10,966 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 16:06:10,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-01-28 16:06:10,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598678863] [2022-01-28 16:06:10,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 16:06:10,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-28 16:06:10,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:06:10,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-28 16:06:10,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=540, Unknown=0, NotChecked=0, Total=650 [2022-01-28 16:06:10,966 INFO L87 Difference]: Start difference. First operand 294 states and 631 transitions. Second operand has 26 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 25 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:11,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:06:11,710 INFO L93 Difference]: Finished difference Result 388 states and 799 transitions. [2022-01-28 16:06:11,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-28 16:06:11,711 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 25 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-28 16:06:11,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:06:11,712 INFO L225 Difference]: With dead ends: 388 [2022-01-28 16:06:11,712 INFO L226 Difference]: Without dead ends: 372 [2022-01-28 16:06:11,713 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 18 SyntacticMatches, 5 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 694 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=496, Invalid=2260, Unknown=0, NotChecked=0, Total=2756 [2022-01-28 16:06:11,713 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 74 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-28 16:06:11,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 112 Invalid, 644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-28 16:06:11,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2022-01-28 16:06:11,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 290. [2022-01-28 16:06:11,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 289 states have (on average 2.152249134948097) internal successors, (622), 289 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:11,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 622 transitions. [2022-01-28 16:06:11,718 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 622 transitions. Word has length 19 [2022-01-28 16:06:11,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:06:11,719 INFO L470 AbstractCegarLoop]: Abstraction has 290 states and 622 transitions. [2022-01-28 16:06:11,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 25 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:11,719 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 622 transitions. [2022-01-28 16:06:11,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-28 16:06:11,719 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:06:11,719 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:06:11,737 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-01-28 16:06:11,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:06:11,927 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:06:11,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:06:11,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1392919166, now seen corresponding path program 22 times [2022-01-28 16:06:11,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:06:11,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890507763] [2022-01-28 16:06:11,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:06:11,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:06:11,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:06:12,018 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:12,019 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:06:12,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890507763] [2022-01-28 16:06:12,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890507763] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 16:06:12,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669612251] [2022-01-28 16:06:12,019 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-28 16:06:12,019 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:06:12,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 16:06:12,020 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 16:06:12,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-01-28 16:06:12,045 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-28 16:06:12,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 16:06:12,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-28 16:06:12,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 16:06:12,230 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:12,230 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 16:06:12,549 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:12,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669612251] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 16:06:12,550 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 16:06:12,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26 [2022-01-28 16:06:12,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960592195] [2022-01-28 16:06:12,550 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 16:06:12,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-28 16:06:12,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:06:12,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-28 16:06:12,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=591, Unknown=0, NotChecked=0, Total=702 [2022-01-28 16:06:12,551 INFO L87 Difference]: Start difference. First operand 290 states and 622 transitions. Second operand has 27 states, 27 states have (on average 1.4074074074074074) 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) [2022-01-28 16:06:13,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:06:13,253 INFO L93 Difference]: Finished difference Result 361 states and 746 transitions. [2022-01-28 16:06:13,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-01-28 16:06:13,254 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.4074074074074074) 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) Word has length 19 [2022-01-28 16:06:13,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:06:13,255 INFO L225 Difference]: With dead ends: 361 [2022-01-28 16:06:13,255 INFO L226 Difference]: Without dead ends: 345 [2022-01-28 16:06:13,255 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 17 SyntacticMatches, 5 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 600 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=427, Invalid=2023, Unknown=0, NotChecked=0, Total=2450 [2022-01-28 16:06:13,255 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 88 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-28 16:06:13,255 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 110 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-28 16:06:13,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2022-01-28 16:06:13,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 290. [2022-01-28 16:06:13,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 289 states have (on average 2.14878892733564) internal successors, (621), 289 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:13,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 621 transitions. [2022-01-28 16:06:13,260 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 621 transitions. Word has length 19 [2022-01-28 16:06:13,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:06:13,260 INFO L470 AbstractCegarLoop]: Abstraction has 290 states and 621 transitions. [2022-01-28 16:06:13,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.4074074074074074) 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) [2022-01-28 16:06:13,261 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 621 transitions. [2022-01-28 16:06:13,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-28 16:06:13,261 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:06:13,261 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:06:13,278 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2022-01-28 16:06:13,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2022-01-28 16:06:13,471 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:06:13,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:06:13,471 INFO L85 PathProgramCache]: Analyzing trace with hash 2099335634, now seen corresponding path program 23 times [2022-01-28 16:06:13,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:06:13,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631862294] [2022-01-28 16:06:13,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:06:13,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:06:13,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:06:13,568 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:13,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:06:13,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631862294] [2022-01-28 16:06:13,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631862294] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 16:06:13,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173839379] [2022-01-28 16:06:13,569 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-28 16:06:13,569 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:06:13,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 16:06:13,570 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 16:06:13,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-01-28 16:06:13,586 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-28 16:06:13,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 16:06:13,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-28 16:06:13,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 16:06:13,784 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:13,784 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-28 16:06:13,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1173839379] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 16:06:13,784 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-28 16:06:13,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 18 [2022-01-28 16:06:13,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774933895] [2022-01-28 16:06:13,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 16:06:13,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-28 16:06:13,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:06:13,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-28 16:06:13,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2022-01-28 16:06:13,785 INFO L87 Difference]: Start difference. First operand 290 states and 621 transitions. Second operand has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:13,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:06:13,905 INFO L93 Difference]: Finished difference Result 388 states and 817 transitions. [2022-01-28 16:06:13,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-28 16:06:13,905 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-28 16:06:13,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:06:13,906 INFO L225 Difference]: With dead ends: 388 [2022-01-28 16:06:13,906 INFO L226 Difference]: Without dead ends: 377 [2022-01-28 16:06:13,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=366, Unknown=0, NotChecked=0, Total=462 [2022-01-28 16:06:13,906 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 30 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 16:06:13,906 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 88 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 16:06:13,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2022-01-28 16:06:13,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 285. [2022-01-28 16:06:13,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 284 states have (on average 2.147887323943662) internal successors, (610), 284 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:13,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 610 transitions. [2022-01-28 16:06:13,911 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 610 transitions. Word has length 19 [2022-01-28 16:06:13,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:06:13,912 INFO L470 AbstractCegarLoop]: Abstraction has 285 states and 610 transitions. [2022-01-28 16:06:13,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:13,912 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 610 transitions. [2022-01-28 16:06:13,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-28 16:06:13,912 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:06:13,912 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:06:13,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-01-28 16:06:14,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2022-01-28 16:06:14,134 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:06:14,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:06:14,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1119920506, now seen corresponding path program 24 times [2022-01-28 16:06:14,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:06:14,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433264734] [2022-01-28 16:06:14,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:06:14,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:06:14,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:06:14,223 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:14,224 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:06:14,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433264734] [2022-01-28 16:06:14,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433264734] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 16:06:14,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117277157] [2022-01-28 16:06:14,224 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-28 16:06:14,224 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:06:14,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 16:06:14,225 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 16:06:14,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-01-28 16:06:14,241 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-28 16:06:14,241 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 16:06:14,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-28 16:06:14,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 16:06:14,439 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:14,439 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 16:06:14,737 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:14,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1117277157] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 16:06:14,738 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 16:06:14,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-01-28 16:06:14,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084175850] [2022-01-28 16:06:14,738 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 16:06:14,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-28 16:06:14,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:06:14,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-28 16:06:14,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=531, Unknown=0, NotChecked=0, Total=650 [2022-01-28 16:06:14,739 INFO L87 Difference]: Start difference. First operand 285 states and 610 transitions. Second operand has 26 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 25 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:16,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:06:16,367 INFO L93 Difference]: Finished difference Result 691 states and 1437 transitions. [2022-01-28 16:06:16,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-01-28 16:06:16,367 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 25 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-28 16:06:16,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:06:16,369 INFO L225 Difference]: With dead ends: 691 [2022-01-28 16:06:16,369 INFO L226 Difference]: Without dead ends: 673 [2022-01-28 16:06:16,369 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 18 SyntacticMatches, 5 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1818 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1267, Invalid=4739, Unknown=0, NotChecked=0, Total=6006 [2022-01-28 16:06:16,371 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 163 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 857 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-28 16:06:16,371 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 205 Invalid, 982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 857 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-28 16:06:16,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2022-01-28 16:06:16,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 375. [2022-01-28 16:06:16,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 374 states have (on average 2.2112299465240643) internal successors, (827), 374 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:16,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 827 transitions. [2022-01-28 16:06:16,378 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 827 transitions. Word has length 19 [2022-01-28 16:06:16,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:06:16,379 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 827 transitions. [2022-01-28 16:06:16,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 25 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:16,379 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 827 transitions. [2022-01-28 16:06:16,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-28 16:06:16,380 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:06:16,380 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:06:16,401 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-01-28 16:06:16,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:06:16,595 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:06:16,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:06:16,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1202219386, now seen corresponding path program 25 times [2022-01-28 16:06:16,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:06:16,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387398380] [2022-01-28 16:06:16,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:06:16,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:06:16,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:06:16,702 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:16,702 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:06:16,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387398380] [2022-01-28 16:06:16,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387398380] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 16:06:16,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178440900] [2022-01-28 16:06:16,703 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-28 16:06:16,703 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:06:16,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 16:06:16,707 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 16:06:16,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-01-28 16:06:16,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:06:16,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-28 16:06:16,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 16:06:16,928 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:16,928 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 16:06:17,199 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:17,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [178440900] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 16:06:17,200 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 16:06:17,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-01-28 16:06:17,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132708331] [2022-01-28 16:06:17,200 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 16:06:17,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-28 16:06:17,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:06:17,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-28 16:06:17,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=534, Unknown=0, NotChecked=0, Total=650 [2022-01-28 16:06:17,201 INFO L87 Difference]: Start difference. First operand 375 states and 827 transitions. Second operand has 26 states, 26 states have (on average 1.5) internal successors, (39), 25 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:18,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:06:18,273 INFO L93 Difference]: Finished difference Result 573 states and 1181 transitions. [2022-01-28 16:06:18,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-28 16:06:18,274 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.5) internal successors, (39), 25 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-28 16:06:18,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:06:18,275 INFO L225 Difference]: With dead ends: 573 [2022-01-28 16:06:18,275 INFO L226 Difference]: Without dead ends: 556 [2022-01-28 16:06:18,276 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 18 SyntacticMatches, 5 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 959 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=676, Invalid=2864, Unknown=0, NotChecked=0, Total=3540 [2022-01-28 16:06:18,276 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 122 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 800 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-28 16:06:18,276 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 178 Invalid, 872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 800 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-28 16:06:18,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2022-01-28 16:06:18,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 380. [2022-01-28 16:06:18,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 2.2110817941952505) internal successors, (838), 379 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:18,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 838 transitions. [2022-01-28 16:06:18,282 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 838 transitions. Word has length 19 [2022-01-28 16:06:18,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:06:18,283 INFO L470 AbstractCegarLoop]: Abstraction has 380 states and 838 transitions. [2022-01-28 16:06:18,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.5) internal successors, (39), 25 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:18,283 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 838 transitions. [2022-01-28 16:06:18,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-28 16:06:18,284 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:06:18,284 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:06:18,307 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-01-28 16:06:18,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:06:18,503 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:06:18,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:06:18,504 INFO L85 PathProgramCache]: Analyzing trace with hash -477837678, now seen corresponding path program 26 times [2022-01-28 16:06:18,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:06:18,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109586830] [2022-01-28 16:06:18,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:06:18,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:06:18,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:06:18,601 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:18,601 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:06:18,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109586830] [2022-01-28 16:06:18,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109586830] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 16:06:18,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853472417] [2022-01-28 16:06:18,601 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-28 16:06:18,602 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:06:18,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 16:06:18,603 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 16:06:18,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-01-28 16:06:18,620 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-28 16:06:18,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 16:06:18,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-28 16:06:18,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 16:06:18,805 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:18,805 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 16:06:19,096 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:19,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853472417] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 16:06:19,096 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 16:06:19,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26 [2022-01-28 16:06:19,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895821307] [2022-01-28 16:06:19,096 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 16:06:19,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-28 16:06:19,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:06:19,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-28 16:06:19,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=586, Unknown=0, NotChecked=0, Total=702 [2022-01-28 16:06:19,097 INFO L87 Difference]: Start difference. First operand 380 states and 838 transitions. Second operand has 27 states, 27 states have (on average 1.4074074074074074) 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) [2022-01-28 16:06:20,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:06:20,158 INFO L93 Difference]: Finished difference Result 521 states and 1077 transitions. [2022-01-28 16:06:20,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-28 16:06:20,158 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.4074074074074074) 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) Word has length 19 [2022-01-28 16:06:20,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:06:20,160 INFO L225 Difference]: With dead ends: 521 [2022-01-28 16:06:20,160 INFO L226 Difference]: Without dead ends: 505 [2022-01-28 16:06:20,160 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 17 SyntacticMatches, 5 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 912 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=672, Invalid=2750, Unknown=0, NotChecked=0, Total=3422 [2022-01-28 16:06:20,161 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 111 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 739 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 739 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-28 16:06:20,161 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 188 Invalid, 797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 739 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-28 16:06:20,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2022-01-28 16:06:20,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 377. [2022-01-28 16:06:20,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 376 states have (on average 2.2101063829787235) internal successors, (831), 376 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:20,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 831 transitions. [2022-01-28 16:06:20,167 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 831 transitions. Word has length 19 [2022-01-28 16:06:20,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:06:20,167 INFO L470 AbstractCegarLoop]: Abstraction has 377 states and 831 transitions. [2022-01-28 16:06:20,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.4074074074074074) 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) [2022-01-28 16:06:20,168 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 831 transitions. [2022-01-28 16:06:20,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-28 16:06:20,168 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:06:20,168 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:06:20,186 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2022-01-28 16:06:20,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:06:20,379 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:06:20,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:06:20,380 INFO L85 PathProgramCache]: Analyzing trace with hash -604882728, now seen corresponding path program 27 times [2022-01-28 16:06:20,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:06:20,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926557585] [2022-01-28 16:06:20,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:06:20,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:06:20,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:06:20,492 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:20,492 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:06:20,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926557585] [2022-01-28 16:06:20,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926557585] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 16:06:20,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790080081] [2022-01-28 16:06:20,492 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-28 16:06:20,492 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:06:20,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 16:06:20,493 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 16:06:20,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-01-28 16:06:20,509 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-28 16:06:20,509 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 16:06:20,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-28 16:06:20,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 16:06:20,718 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:20,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 16:06:20,987 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:20,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1790080081] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 16:06:20,988 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 16:06:20,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-01-28 16:06:20,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440478103] [2022-01-28 16:06:20,988 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 16:06:20,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-28 16:06:20,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:06:20,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-28 16:06:20,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=545, Unknown=0, NotChecked=0, Total=650 [2022-01-28 16:06:20,989 INFO L87 Difference]: Start difference. First operand 377 states and 831 transitions. Second operand has 26 states, 26 states have (on average 1.5) internal successors, (39), 25 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:23,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:06:23,358 INFO L93 Difference]: Finished difference Result 697 states and 1443 transitions. [2022-01-28 16:06:23,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-01-28 16:06:23,359 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.5) internal successors, (39), 25 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-28 16:06:23,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:06:23,360 INFO L225 Difference]: With dead ends: 697 [2022-01-28 16:06:23,360 INFO L226 Difference]: Without dead ends: 663 [2022-01-28 16:06:23,363 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 19 SyntacticMatches, 4 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2819 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1495, Invalid=7247, Unknown=0, NotChecked=0, Total=8742 [2022-01-28 16:06:23,363 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 198 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 987 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 1162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 987 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-28 16:06:23,363 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [198 Valid, 219 Invalid, 1162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 987 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-28 16:06:23,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2022-01-28 16:06:23,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 428. [2022-01-28 16:06:23,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 427 states have (on average 2.180327868852459) internal successors, (931), 427 states have internal predecessors, (931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:23,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 931 transitions. [2022-01-28 16:06:23,371 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 931 transitions. Word has length 19 [2022-01-28 16:06:23,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:06:23,371 INFO L470 AbstractCegarLoop]: Abstraction has 428 states and 931 transitions. [2022-01-28 16:06:23,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.5) internal successors, (39), 25 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:23,371 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 931 transitions. [2022-01-28 16:06:23,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-28 16:06:23,372 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:06:23,372 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:06:23,395 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-01-28 16:06:23,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2022-01-28 16:06:23,587 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:06:23,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:06:23,587 INFO L85 PathProgramCache]: Analyzing trace with hash 65161474, now seen corresponding path program 28 times [2022-01-28 16:06:23,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:06:23,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760052803] [2022-01-28 16:06:23,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:06:23,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:06:23,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:06:23,676 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:23,676 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:06:23,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760052803] [2022-01-28 16:06:23,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760052803] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 16:06:23,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498829173] [2022-01-28 16:06:23,676 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-28 16:06:23,676 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:06:23,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 16:06:23,677 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 16:06:23,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-01-28 16:06:23,694 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-28 16:06:23,694 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 16:06:23,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-28 16:06:23,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 16:06:23,895 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:23,895 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 16:06:24,163 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:24,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [498829173] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 16:06:24,163 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 16:06:24,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-01-28 16:06:24,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826454757] [2022-01-28 16:06:24,163 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 16:06:24,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-28 16:06:24,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:06:24,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-28 16:06:24,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=527, Unknown=0, NotChecked=0, Total=650 [2022-01-28 16:06:24,166 INFO L87 Difference]: Start difference. First operand 428 states and 931 transitions. Second operand has 26 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 25 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:25,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:06:25,197 INFO L93 Difference]: Finished difference Result 544 states and 1127 transitions. [2022-01-28 16:06:25,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-28 16:06:25,197 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 25 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-28 16:06:25,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:06:25,199 INFO L225 Difference]: With dead ends: 544 [2022-01-28 16:06:25,199 INFO L226 Difference]: Without dead ends: 522 [2022-01-28 16:06:25,199 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 18 SyntacticMatches, 5 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 887 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=705, Invalid=2717, Unknown=0, NotChecked=0, Total=3422 [2022-01-28 16:06:25,199 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 141 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-28 16:06:25,199 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [141 Valid, 101 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-28 16:06:25,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2022-01-28 16:06:25,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 426. [2022-01-28 16:06:25,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 425 states have (on average 2.1811764705882353) internal successors, (927), 425 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:25,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 927 transitions. [2022-01-28 16:06:25,206 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 927 transitions. Word has length 19 [2022-01-28 16:06:25,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:06:25,206 INFO L470 AbstractCegarLoop]: Abstraction has 426 states and 927 transitions. [2022-01-28 16:06:25,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 25 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:25,206 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 927 transitions. [2022-01-28 16:06:25,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-28 16:06:25,207 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:06:25,207 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:06:25,225 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2022-01-28 16:06:25,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2022-01-28 16:06:25,415 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:06:25,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:06:25,415 INFO L85 PathProgramCache]: Analyzing trace with hash 119498980, now seen corresponding path program 29 times [2022-01-28 16:06:25,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:06:25,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33448499] [2022-01-28 16:06:25,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:06:25,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:06:25,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:06:25,523 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:25,524 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:06:25,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33448499] [2022-01-28 16:06:25,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33448499] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 16:06:25,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148778344] [2022-01-28 16:06:25,524 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-28 16:06:25,524 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:06:25,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 16:06:25,525 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 16:06:25,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-01-28 16:06:25,542 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-28 16:06:25,542 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 16:06:25,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-28 16:06:25,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 16:06:25,704 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:25,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 16:06:25,894 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:25,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [148778344] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 16:06:25,894 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 16:06:25,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 24 [2022-01-28 16:06:25,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262531172] [2022-01-28 16:06:25,894 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 16:06:25,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-28 16:06:25,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:06:25,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-28 16:06:25,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=512, Unknown=0, NotChecked=0, Total=600 [2022-01-28 16:06:25,895 INFO L87 Difference]: Start difference. First operand 426 states and 927 transitions. Second operand has 25 states, 25 states have (on average 1.44) internal successors, (36), 24 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:26,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:06:26,414 INFO L93 Difference]: Finished difference Result 472 states and 999 transitions. [2022-01-28 16:06:26,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-01-28 16:06:26,414 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.44) internal successors, (36), 24 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-28 16:06:26,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:06:26,416 INFO L225 Difference]: With dead ends: 472 [2022-01-28 16:06:26,416 INFO L226 Difference]: Without dead ends: 454 [2022-01-28 16:06:26,416 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 20 SyntacticMatches, 4 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=362, Invalid=1708, Unknown=0, NotChecked=0, Total=2070 [2022-01-28 16:06:26,416 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 54 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-28 16:06:26,416 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 131 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 600 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-28 16:06:26,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2022-01-28 16:06:26,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 431. [2022-01-28 16:06:26,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 430 states have (on average 2.16046511627907) internal successors, (929), 430 states have internal predecessors, (929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:26,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 929 transitions. [2022-01-28 16:06:26,422 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 929 transitions. Word has length 19 [2022-01-28 16:06:26,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:06:26,422 INFO L470 AbstractCegarLoop]: Abstraction has 431 states and 929 transitions. [2022-01-28 16:06:26,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.44) internal successors, (36), 24 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:26,423 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 929 transitions. [2022-01-28 16:06:26,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-28 16:06:26,424 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:06:26,424 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:06:26,449 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-01-28 16:06:26,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:06:26,645 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:06:26,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:06:26,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1399539818, now seen corresponding path program 30 times [2022-01-28 16:06:26,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:06:26,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101698652] [2022-01-28 16:06:26,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:06:26,646 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:06:26,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:06:26,739 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:26,739 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:06:26,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101698652] [2022-01-28 16:06:26,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101698652] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 16:06:26,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231905697] [2022-01-28 16:06:26,740 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-28 16:06:26,740 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:06:26,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 16:06:26,741 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 16:06:26,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-01-28 16:06:26,757 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-28 16:06:26,758 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 16:06:26,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-28 16:06:26,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 16:06:26,915 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:26,916 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 16:06:27,209 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:27,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1231905697] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 16:06:27,209 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 16:06:27,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-01-28 16:06:27,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464331480] [2022-01-28 16:06:27,210 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 16:06:27,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-28 16:06:27,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:06:27,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-28 16:06:27,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=545, Unknown=0, NotChecked=0, Total=650 [2022-01-28 16:06:27,210 INFO L87 Difference]: Start difference. First operand 431 states and 929 transitions. Second operand has 26 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 25 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) [2022-01-28 16:06:28,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:06:28,225 INFO L93 Difference]: Finished difference Result 501 states and 1037 transitions. [2022-01-28 16:06:28,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-28 16:06:28,225 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 25 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-28 16:06:28,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:06:28,226 INFO L225 Difference]: With dead ends: 501 [2022-01-28 16:06:28,226 INFO L226 Difference]: Without dead ends: 483 [2022-01-28 16:06:28,227 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 18 SyntacticMatches, 5 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 687 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=524, Invalid=2338, Unknown=0, NotChecked=0, Total=2862 [2022-01-28 16:06:28,227 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 164 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 668 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-28 16:06:28,227 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [164 Valid, 153 Invalid, 732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 668 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-28 16:06:28,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2022-01-28 16:06:28,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 428. [2022-01-28 16:06:28,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 427 states have (on average 2.1545667447306793) internal successors, (920), 427 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:28,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 920 transitions. [2022-01-28 16:06:28,233 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 920 transitions. Word has length 19 [2022-01-28 16:06:28,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:06:28,233 INFO L470 AbstractCegarLoop]: Abstraction has 428 states and 920 transitions. [2022-01-28 16:06:28,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 25 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) [2022-01-28 16:06:28,233 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 920 transitions. [2022-01-28 16:06:28,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-28 16:06:28,234 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:06:28,234 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:06:28,261 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-01-28 16:06:28,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2022-01-28 16:06:28,447 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:06:28,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:06:28,448 INFO L85 PathProgramCache]: Analyzing trace with hash 180231120, now seen corresponding path program 31 times [2022-01-28 16:06:28,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:06:28,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691510574] [2022-01-28 16:06:28,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:06:28,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:06:28,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:06:28,557 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:28,557 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:06:28,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691510574] [2022-01-28 16:06:28,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691510574] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 16:06:28,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044191251] [2022-01-28 16:06:28,557 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-28 16:06:28,557 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:06:28,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 16:06:28,558 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 16:06:28,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-01-28 16:06:28,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:06:28,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-28 16:06:28,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 16:06:28,757 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:28,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 16:06:29,048 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:29,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044191251] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 16:06:29,048 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 16:06:29,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26 [2022-01-28 16:06:29,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530013834] [2022-01-28 16:06:29,048 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 16:06:29,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-28 16:06:29,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:06:29,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-28 16:06:29,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=586, Unknown=0, NotChecked=0, Total=702 [2022-01-28 16:06:29,049 INFO L87 Difference]: Start difference. First operand 428 states and 920 transitions. Second operand has 27 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 26 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:30,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:06:30,035 INFO L93 Difference]: Finished difference Result 729 states and 1531 transitions. [2022-01-28 16:06:30,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-28 16:06:30,036 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 26 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-28 16:06:30,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:06:30,038 INFO L225 Difference]: With dead ends: 729 [2022-01-28 16:06:30,038 INFO L226 Difference]: Without dead ends: 695 [2022-01-28 16:06:30,038 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 17 SyntacticMatches, 5 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 799 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=634, Invalid=2558, Unknown=0, NotChecked=0, Total=3192 [2022-01-28 16:06:30,038 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 131 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 648 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-28 16:06:30,038 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 157 Invalid, 717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 648 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-28 16:06:30,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2022-01-28 16:06:30,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 513. [2022-01-28 16:06:30,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 513 states, 512 states have (on average 2.193359375) internal successors, (1123), 512 states have internal predecessors, (1123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:30,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 1123 transitions. [2022-01-28 16:06:30,045 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 1123 transitions. Word has length 19 [2022-01-28 16:06:30,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:06:30,045 INFO L470 AbstractCegarLoop]: Abstraction has 513 states and 1123 transitions. [2022-01-28 16:06:30,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 26 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:30,045 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 1123 transitions. [2022-01-28 16:06:30,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-28 16:06:30,046 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:06:30,046 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:06:30,062 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2022-01-28 16:06:30,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:06:30,248 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:06:30,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:06:30,248 INFO L85 PathProgramCache]: Analyzing trace with hash 937456426, now seen corresponding path program 32 times [2022-01-28 16:06:30,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:06:30,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737454316] [2022-01-28 16:06:30,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:06:30,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:06:30,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:06:30,335 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:30,335 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:06:30,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737454316] [2022-01-28 16:06:30,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737454316] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 16:06:30,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317896904] [2022-01-28 16:06:30,335 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-28 16:06:30,335 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:06:30,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 16:06:30,336 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 16:06:30,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-01-28 16:06:30,352 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-28 16:06:30,352 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 16:06:30,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-28 16:06:30,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 16:06:30,555 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:30,555 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 16:06:30,819 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:30,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [317896904] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 16:06:30,819 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 16:06:30,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-01-28 16:06:30,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262583601] [2022-01-28 16:06:30,819 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 16:06:30,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-28 16:06:30,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:06:30,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-28 16:06:30,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=540, Unknown=0, NotChecked=0, Total=650 [2022-01-28 16:06:30,820 INFO L87 Difference]: Start difference. First operand 513 states and 1123 transitions. Second operand has 26 states, 26 states have (on average 1.5) internal successors, (39), 25 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:31,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:06:31,567 INFO L93 Difference]: Finished difference Result 696 states and 1490 transitions. [2022-01-28 16:06:31,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-28 16:06:31,568 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.5) internal successors, (39), 25 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-28 16:06:31,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:06:31,570 INFO L225 Difference]: With dead ends: 696 [2022-01-28 16:06:31,570 INFO L226 Difference]: Without dead ends: 683 [2022-01-28 16:06:31,570 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 18 SyntacticMatches, 5 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 600 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=459, Invalid=1991, Unknown=0, NotChecked=0, Total=2450 [2022-01-28 16:06:31,571 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 72 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-28 16:06:31,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 140 Invalid, 693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 642 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-28 16:06:31,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2022-01-28 16:06:31,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 516. [2022-01-28 16:06:31,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 515 states have (on average 2.1941747572815533) internal successors, (1130), 515 states have internal predecessors, (1130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:31,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 1130 transitions. [2022-01-28 16:06:31,579 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 1130 transitions. Word has length 19 [2022-01-28 16:06:31,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:06:31,580 INFO L470 AbstractCegarLoop]: Abstraction has 516 states and 1130 transitions. [2022-01-28 16:06:31,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.5) internal successors, (39), 25 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:31,580 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 1130 transitions. [2022-01-28 16:06:31,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-28 16:06:31,581 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:06:31,581 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:06:31,603 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2022-01-28 16:06:31,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2022-01-28 16:06:31,803 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:06:31,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:06:31,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1675673960, now seen corresponding path program 33 times [2022-01-28 16:06:31,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:06:31,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745527551] [2022-01-28 16:06:31,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:06:31,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:06:31,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:06:31,911 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:31,911 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:06:31,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745527551] [2022-01-28 16:06:31,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745527551] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 16:06:31,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090277226] [2022-01-28 16:06:31,912 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-28 16:06:31,912 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:06:31,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 16:06:31,913 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 16:06:31,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-01-28 16:06:31,929 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-28 16:06:31,929 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 16:06:31,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-28 16:06:31,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 16:06:32,128 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:32,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 16:06:32,411 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:32,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090277226] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 16:06:32,411 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 16:06:32,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-01-28 16:06:32,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3655043] [2022-01-28 16:06:32,412 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 16:06:32,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-28 16:06:32,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:06:32,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-28 16:06:32,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=530, Unknown=0, NotChecked=0, Total=650 [2022-01-28 16:06:32,412 INFO L87 Difference]: Start difference. First operand 516 states and 1130 transitions. Second operand has 26 states, 26 states have (on average 1.5) internal successors, (39), 25 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:33,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:06:33,483 INFO L93 Difference]: Finished difference Result 867 states and 1887 transitions. [2022-01-28 16:06:33,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-28 16:06:33,483 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.5) internal successors, (39), 25 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-28 16:06:33,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:06:33,486 INFO L225 Difference]: With dead ends: 867 [2022-01-28 16:06:33,486 INFO L226 Difference]: Without dead ends: 852 [2022-01-28 16:06:33,486 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 18 SyntacticMatches, 5 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1041 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=806, Invalid=3100, Unknown=0, NotChecked=0, Total=3906 [2022-01-28 16:06:33,487 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 96 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 735 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-28 16:06:33,487 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 153 Invalid, 816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 735 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-28 16:06:33,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2022-01-28 16:06:33,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 566. [2022-01-28 16:06:33,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 565 states have (on average 2.2389380530973453) internal successors, (1265), 565 states have internal predecessors, (1265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:33,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 1265 transitions. [2022-01-28 16:06:33,503 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 1265 transitions. Word has length 19 [2022-01-28 16:06:33,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:06:33,503 INFO L470 AbstractCegarLoop]: Abstraction has 566 states and 1265 transitions. [2022-01-28 16:06:33,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.5) internal successors, (39), 25 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:33,504 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 1265 transitions. [2022-01-28 16:06:33,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-28 16:06:33,505 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:06:33,505 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:06:33,529 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-01-28 16:06:33,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:06:33,723 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:06:33,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:06:33,724 INFO L85 PathProgramCache]: Analyzing trace with hash 70081398, now seen corresponding path program 34 times [2022-01-28 16:06:33,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:06:33,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005626176] [2022-01-28 16:06:33,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:06:33,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:06:33,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:06:33,829 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:33,829 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:06:33,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005626176] [2022-01-28 16:06:33,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005626176] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 16:06:33,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850246266] [2022-01-28 16:06:33,829 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-28 16:06:33,829 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:06:33,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 16:06:33,830 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 16:06:33,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-01-28 16:06:33,851 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-28 16:06:33,851 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 16:06:33,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-28 16:06:33,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 16:06:34,089 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:34,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 16:06:34,369 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:34,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1850246266] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 16:06:34,369 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 16:06:34,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-01-28 16:06:34,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844653234] [2022-01-28 16:06:34,369 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 16:06:34,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-28 16:06:34,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:06:34,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-28 16:06:34,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=529, Unknown=0, NotChecked=0, Total=650 [2022-01-28 16:06:34,370 INFO L87 Difference]: Start difference. First operand 566 states and 1265 transitions. Second operand has 26 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 25 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:35,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:06:35,398 INFO L93 Difference]: Finished difference Result 860 states and 1867 transitions. [2022-01-28 16:06:35,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-28 16:06:35,398 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 25 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-28 16:06:35,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:06:35,401 INFO L225 Difference]: With dead ends: 860 [2022-01-28 16:06:35,401 INFO L226 Difference]: Without dead ends: 850 [2022-01-28 16:06:35,401 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 18 SyntacticMatches, 5 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 887 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=743, Invalid=2679, Unknown=0, NotChecked=0, Total=3422 [2022-01-28 16:06:35,401 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 110 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 634 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-28 16:06:35,401 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 142 Invalid, 729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 634 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-28 16:06:35,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2022-01-28 16:06:35,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 570. [2022-01-28 16:06:35,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 569 states have (on average 2.242530755711775) internal successors, (1276), 569 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:35,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 1276 transitions. [2022-01-28 16:06:35,410 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 1276 transitions. Word has length 19 [2022-01-28 16:06:35,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:06:35,410 INFO L470 AbstractCegarLoop]: Abstraction has 570 states and 1276 transitions. [2022-01-28 16:06:35,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 25 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:35,410 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 1276 transitions. [2022-01-28 16:06:35,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-28 16:06:35,411 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:06:35,411 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:06:35,432 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2022-01-28 16:06:35,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:06:35,627 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:06:35,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:06:35,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1732734086, now seen corresponding path program 35 times [2022-01-28 16:06:35,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:06:35,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895007257] [2022-01-28 16:06:35,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:06:35,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:06:35,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:06:35,725 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:35,725 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:06:35,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895007257] [2022-01-28 16:06:35,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895007257] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 16:06:35,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748976424] [2022-01-28 16:06:35,726 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-28 16:06:35,726 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:06:35,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 16:06:35,727 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 16:06:35,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-01-28 16:06:35,742 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-28 16:06:35,742 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 16:06:35,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-28 16:06:35,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 16:06:35,914 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:35,914 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 16:06:36,141 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:36,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748976424] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 16:06:36,141 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 16:06:36,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 24 [2022-01-28 16:06:36,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569092381] [2022-01-28 16:06:36,141 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 16:06:36,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-28 16:06:36,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:06:36,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-28 16:06:36,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=495, Unknown=0, NotChecked=0, Total=600 [2022-01-28 16:06:36,142 INFO L87 Difference]: Start difference. First operand 570 states and 1276 transitions. Second operand has 25 states, 25 states have (on average 1.44) internal successors, (36), 24 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:36,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:06:36,950 INFO L93 Difference]: Finished difference Result 905 states and 1998 transitions. [2022-01-28 16:06:36,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-28 16:06:36,950 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.44) internal successors, (36), 24 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-28 16:06:36,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:06:36,952 INFO L225 Difference]: With dead ends: 905 [2022-01-28 16:06:36,953 INFO L226 Difference]: Without dead ends: 893 [2022-01-28 16:06:36,953 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 20 SyntacticMatches, 4 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 646 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=518, Invalid=2134, Unknown=0, NotChecked=0, Total=2652 [2022-01-28 16:06:36,953 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 90 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-28 16:06:36,953 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 130 Invalid, 673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 606 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-28 16:06:36,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2022-01-28 16:06:36,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 586. [2022-01-28 16:06:36,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 586 states, 585 states have (on average 2.25982905982906) internal successors, (1322), 585 states have internal predecessors, (1322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:36,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 1322 transitions. [2022-01-28 16:06:36,963 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 1322 transitions. Word has length 19 [2022-01-28 16:06:36,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:06:36,963 INFO L470 AbstractCegarLoop]: Abstraction has 586 states and 1322 transitions. [2022-01-28 16:06:36,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.44) internal successors, (36), 24 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:36,963 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 1322 transitions. [2022-01-28 16:06:36,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-28 16:06:36,964 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:06:36,964 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:06:36,989 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2022-01-28 16:06:37,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2022-01-28 16:06:37,183 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:06:37,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:06:37,183 INFO L85 PathProgramCache]: Analyzing trace with hash -763023606, now seen corresponding path program 36 times [2022-01-28 16:06:37,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:06:37,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031847912] [2022-01-28 16:06:37,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:06:37,184 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:06:37,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:06:37,275 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:37,275 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:06:37,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031847912] [2022-01-28 16:06:37,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031847912] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 16:06:37,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726752191] [2022-01-28 16:06:37,275 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-28 16:06:37,275 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:06:37,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 16:06:37,276 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 16:06:37,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-01-28 16:06:37,291 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-28 16:06:37,292 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 16:06:37,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-28 16:06:37,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 16:06:37,478 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:37,478 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 16:06:37,760 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:37,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [726752191] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 16:06:37,760 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 16:06:37,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26 [2022-01-28 16:06:37,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842305226] [2022-01-28 16:06:37,760 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 16:06:37,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-28 16:06:37,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:06:37,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-28 16:06:37,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=586, Unknown=0, NotChecked=0, Total=702 [2022-01-28 16:06:37,761 INFO L87 Difference]: Start difference. First operand 586 states and 1322 transitions. Second operand has 27 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 26 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:38,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:06:38,941 INFO L93 Difference]: Finished difference Result 927 states and 2025 transitions. [2022-01-28 16:06:38,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-28 16:06:38,941 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 26 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-28 16:06:38,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:06:38,943 INFO L225 Difference]: With dead ends: 927 [2022-01-28 16:06:38,943 INFO L226 Difference]: Without dead ends: 900 [2022-01-28 16:06:38,944 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 17 SyntacticMatches, 5 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1037 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=711, Invalid=3071, Unknown=0, NotChecked=0, Total=3782 [2022-01-28 16:06:38,944 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 105 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 768 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-28 16:06:38,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 180 Invalid, 849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 768 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-28 16:06:38,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 900 states. [2022-01-28 16:06:38,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 900 to 538. [2022-01-28 16:06:38,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 537 states have (on average 2.2253258845437616) internal successors, (1195), 537 states have internal predecessors, (1195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:38,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 1195 transitions. [2022-01-28 16:06:38,952 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 1195 transitions. Word has length 19 [2022-01-28 16:06:38,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:06:38,952 INFO L470 AbstractCegarLoop]: Abstraction has 538 states and 1195 transitions. [2022-01-28 16:06:38,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 26 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:38,952 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 1195 transitions. [2022-01-28 16:06:38,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-28 16:06:38,953 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:06:38,953 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:06:38,968 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-01-28 16:06:39,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2022-01-28 16:06:39,153 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:06:39,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:06:39,154 INFO L85 PathProgramCache]: Analyzing trace with hash 171503244, now seen corresponding path program 37 times [2022-01-28 16:06:39,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:06:39,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505705535] [2022-01-28 16:06:39,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:06:39,154 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:06:39,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:06:39,241 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:39,241 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:06:39,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505705535] [2022-01-28 16:06:39,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505705535] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 16:06:39,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355547974] [2022-01-28 16:06:39,241 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-28 16:06:39,241 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:06:39,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 16:06:39,242 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 16:06:39,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-01-28 16:06:39,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:06:39,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-28 16:06:39,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 16:06:39,459 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:39,460 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 16:06:39,723 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:39,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [355547974] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 16:06:39,723 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 16:06:39,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-01-28 16:06:39,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393933718] [2022-01-28 16:06:39,723 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 16:06:39,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-28 16:06:39,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:06:39,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-28 16:06:39,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=531, Unknown=0, NotChecked=0, Total=650 [2022-01-28 16:06:39,724 INFO L87 Difference]: Start difference. First operand 538 states and 1195 transitions. Second operand has 26 states, 26 states have (on average 1.5) internal successors, (39), 25 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:40,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:06:40,778 INFO L93 Difference]: Finished difference Result 791 states and 1683 transitions. [2022-01-28 16:06:40,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-28 16:06:40,779 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.5) internal successors, (39), 25 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-28 16:06:40,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:06:40,781 INFO L225 Difference]: With dead ends: 791 [2022-01-28 16:06:40,781 INFO L226 Difference]: Without dead ends: 768 [2022-01-28 16:06:40,781 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 18 SyntacticMatches, 5 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 865 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=723, Invalid=2583, Unknown=0, NotChecked=0, Total=3306 [2022-01-28 16:06:40,781 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 111 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 735 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-28 16:06:40,781 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 152 Invalid, 819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 735 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-28 16:06:40,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2022-01-28 16:06:40,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 579. [2022-01-28 16:06:40,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 578 states have (on average 2.226643598615917) internal successors, (1287), 578 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:40,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 1287 transitions. [2022-01-28 16:06:40,788 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 1287 transitions. Word has length 19 [2022-01-28 16:06:40,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:06:40,788 INFO L470 AbstractCegarLoop]: Abstraction has 579 states and 1287 transitions. [2022-01-28 16:06:40,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.5) internal successors, (39), 25 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:40,789 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 1287 transitions. [2022-01-28 16:06:40,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-28 16:06:40,789 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:06:40,789 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:06:40,805 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2022-01-28 16:06:40,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2022-01-28 16:06:40,990 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:06:40,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:06:40,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1575774342, now seen corresponding path program 38 times [2022-01-28 16:06:40,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:06:40,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199018551] [2022-01-28 16:06:40,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:06:40,990 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:06:40,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:06:41,095 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:41,095 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:06:41,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199018551] [2022-01-28 16:06:41,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199018551] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 16:06:41,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310072864] [2022-01-28 16:06:41,095 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-28 16:06:41,095 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:06:41,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 16:06:41,100 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 16:06:41,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-01-28 16:06:41,123 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-28 16:06:41,123 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 16:06:41,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-28 16:06:41,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 16:06:41,362 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:41,362 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 16:06:41,656 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:41,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310072864] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 16:06:41,656 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 16:06:41,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26 [2022-01-28 16:06:41,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407175536] [2022-01-28 16:06:41,657 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 16:06:41,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-28 16:06:41,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:06:41,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-28 16:06:41,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=591, Unknown=0, NotChecked=0, Total=702 [2022-01-28 16:06:41,657 INFO L87 Difference]: Start difference. First operand 579 states and 1287 transitions. Second operand has 27 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 26 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:42,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:06:42,042 INFO L93 Difference]: Finished difference Result 714 states and 1555 transitions. [2022-01-28 16:06:42,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-28 16:06:42,044 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 26 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-28 16:06:42,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:06:42,046 INFO L225 Difference]: With dead ends: 714 [2022-01-28 16:06:42,046 INFO L226 Difference]: Without dead ends: 691 [2022-01-28 16:06:42,046 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 17 SyntacticMatches, 5 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=294, Invalid=1188, Unknown=0, NotChecked=0, Total=1482 [2022-01-28 16:06:42,046 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 78 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-28 16:06:42,046 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 154 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-28 16:06:42,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2022-01-28 16:06:42,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 534. [2022-01-28 16:06:42,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 533 states have (on average 2.2120075046904315) internal successors, (1179), 533 states have internal predecessors, (1179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:42,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 1179 transitions. [2022-01-28 16:06:42,053 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 1179 transitions. Word has length 19 [2022-01-28 16:06:42,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:06:42,053 INFO L470 AbstractCegarLoop]: Abstraction has 534 states and 1179 transitions. [2022-01-28 16:06:42,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 26 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:42,053 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 1179 transitions. [2022-01-28 16:06:42,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-28 16:06:42,053 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:06:42,053 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:06:42,069 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2022-01-28 16:06:42,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2022-01-28 16:06:42,254 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:06:42,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:06:42,254 INFO L85 PathProgramCache]: Analyzing trace with hash 2144327576, now seen corresponding path program 39 times [2022-01-28 16:06:42,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:06:42,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025294467] [2022-01-28 16:06:42,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:06:42,254 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:06:42,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:06:42,345 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:42,345 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:06:42,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025294467] [2022-01-28 16:06:42,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025294467] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 16:06:42,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [798762191] [2022-01-28 16:06:42,345 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-28 16:06:42,345 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:06:42,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 16:06:42,346 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 16:06:42,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-01-28 16:06:42,362 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-28 16:06:42,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 16:06:42,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-28 16:06:42,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 16:06:42,567 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:42,567 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 16:06:42,824 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:42,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [798762191] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 16:06:42,824 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 16:06:42,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-01-28 16:06:42,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805330902] [2022-01-28 16:06:42,824 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 16:06:42,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-28 16:06:42,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:06:42,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-28 16:06:42,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=543, Unknown=0, NotChecked=0, Total=650 [2022-01-28 16:06:42,825 INFO L87 Difference]: Start difference. First operand 534 states and 1179 transitions. Second operand has 26 states, 26 states have (on average 1.5) internal successors, (39), 25 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:43,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:06:43,266 INFO L93 Difference]: Finished difference Result 675 states and 1460 transitions. [2022-01-28 16:06:43,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-28 16:06:43,267 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.5) internal successors, (39), 25 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-28 16:06:43,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:06:43,269 INFO L225 Difference]: With dead ends: 675 [2022-01-28 16:06:43,269 INFO L226 Difference]: Without dead ends: 662 [2022-01-28 16:06:43,269 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 18 SyntacticMatches, 5 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 343 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=329, Invalid=1311, Unknown=0, NotChecked=0, Total=1640 [2022-01-28 16:06:43,269 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 50 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-28 16:06:43,269 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 171 Invalid, 629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 606 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-28 16:06:43,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2022-01-28 16:06:43,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 534. [2022-01-28 16:06:43,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 533 states have (on average 2.2120075046904315) internal successors, (1179), 533 states have internal predecessors, (1179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:43,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 1179 transitions. [2022-01-28 16:06:43,277 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 1179 transitions. Word has length 19 [2022-01-28 16:06:43,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:06:43,277 INFO L470 AbstractCegarLoop]: Abstraction has 534 states and 1179 transitions. [2022-01-28 16:06:43,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.5) internal successors, (39), 25 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:43,277 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 1179 transitions. [2022-01-28 16:06:43,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-28 16:06:43,278 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:06:43,278 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:06:43,293 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2022-01-28 16:06:43,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:06:43,478 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:06:43,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:06:43,479 INFO L85 PathProgramCache]: Analyzing trace with hash -468802810, now seen corresponding path program 40 times [2022-01-28 16:06:43,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:06:43,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505902778] [2022-01-28 16:06:43,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:06:43,479 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:06:43,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:06:43,578 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:43,578 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:06:43,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505902778] [2022-01-28 16:06:43,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505902778] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 16:06:43,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382658333] [2022-01-28 16:06:43,579 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-28 16:06:43,579 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:06:43,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 16:06:43,580 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 16:06:43,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-01-28 16:06:43,595 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-28 16:06:43,595 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 16:06:43,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-28 16:06:43,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 16:06:43,800 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:43,800 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 16:06:44,062 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:44,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382658333] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 16:06:44,063 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 16:06:44,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-01-28 16:06:44,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274226642] [2022-01-28 16:06:44,063 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 16:06:44,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-28 16:06:44,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:06:44,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-28 16:06:44,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=532, Unknown=0, NotChecked=0, Total=650 [2022-01-28 16:06:44,064 INFO L87 Difference]: Start difference. First operand 534 states and 1179 transitions. Second operand has 26 states, 26 states have (on average 1.5) internal successors, (39), 25 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:44,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:06:44,669 INFO L93 Difference]: Finished difference Result 882 states and 1915 transitions. [2022-01-28 16:06:44,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-01-28 16:06:44,670 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.5) internal successors, (39), 25 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-28 16:06:44,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:06:44,672 INFO L225 Difference]: With dead ends: 882 [2022-01-28 16:06:44,672 INFO L226 Difference]: Without dead ends: 867 [2022-01-28 16:06:44,672 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 18 SyntacticMatches, 5 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 506 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=540, Invalid=1812, Unknown=0, NotChecked=0, Total=2352 [2022-01-28 16:06:44,672 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 79 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-28 16:06:44,672 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 142 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-28 16:06:44,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 867 states. [2022-01-28 16:06:44,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 867 to 539. [2022-01-28 16:06:44,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 538 states have (on average 2.2137546468401488) internal successors, (1191), 538 states have internal predecessors, (1191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:44,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 1191 transitions. [2022-01-28 16:06:44,680 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 1191 transitions. Word has length 19 [2022-01-28 16:06:44,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:06:44,681 INFO L470 AbstractCegarLoop]: Abstraction has 539 states and 1191 transitions. [2022-01-28 16:06:44,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.5) internal successors, (39), 25 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:44,681 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 1191 transitions. [2022-01-28 16:06:44,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-28 16:06:44,681 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:06:44,681 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:06:44,697 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2022-01-28 16:06:44,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable71 [2022-01-28 16:06:44,882 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:06:44,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:06:44,882 INFO L85 PathProgramCache]: Analyzing trace with hash 606908346, now seen corresponding path program 41 times [2022-01-28 16:06:44,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:06:44,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836183277] [2022-01-28 16:06:44,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:06:44,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:06:44,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:06:44,966 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:44,966 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:06:44,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836183277] [2022-01-28 16:06:44,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836183277] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 16:06:44,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127097096] [2022-01-28 16:06:44,966 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-28 16:06:44,967 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:06:44,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 16:06:44,968 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 16:06:44,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-01-28 16:06:44,988 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-28 16:06:44,988 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 16:06:44,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-28 16:06:44,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 16:06:45,168 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:45,169 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 16:06:45,398 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:45,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2127097096] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 16:06:45,398 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 16:06:45,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 23 [2022-01-28 16:06:45,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249200036] [2022-01-28 16:06:45,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 16:06:45,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-28 16:06:45,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:06:45,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-28 16:06:45,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=448, Unknown=0, NotChecked=0, Total=552 [2022-01-28 16:06:45,399 INFO L87 Difference]: Start difference. First operand 539 states and 1191 transitions. Second operand has 24 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 23 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) [2022-01-28 16:06:45,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:06:45,954 INFO L93 Difference]: Finished difference Result 866 states and 1891 transitions. [2022-01-28 16:06:45,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-28 16:06:45,955 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-28 16:06:45,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:06:45,957 INFO L225 Difference]: With dead ends: 866 [2022-01-28 16:06:45,957 INFO L226 Difference]: Without dead ends: 849 [2022-01-28 16:06:45,957 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 21 SyntacticMatches, 4 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=323, Invalid=1317, Unknown=0, NotChecked=0, Total=1640 [2022-01-28 16:06:45,957 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 53 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-28 16:06:45,957 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 181 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 600 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-28 16:06:45,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2022-01-28 16:06:45,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 463. [2022-01-28 16:06:45,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 462 states have (on average 2.207792207792208) internal successors, (1020), 462 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:45,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 1020 transitions. [2022-01-28 16:06:45,965 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 1020 transitions. Word has length 19 [2022-01-28 16:06:45,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:06:45,965 INFO L470 AbstractCegarLoop]: Abstraction has 463 states and 1020 transitions. [2022-01-28 16:06:45,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 23 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) [2022-01-28 16:06:45,965 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 1020 transitions. [2022-01-28 16:06:45,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-28 16:06:45,966 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:06:45,966 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:06:45,981 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2022-01-28 16:06:46,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:06:46,166 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:06:46,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:06:46,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1276952548, now seen corresponding path program 42 times [2022-01-28 16:06:46,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:06:46,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304212581] [2022-01-28 16:06:46,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:06:46,167 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:06:46,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:06:46,268 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:46,268 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:06:46,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304212581] [2022-01-28 16:06:46,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304212581] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 16:06:46,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823298395] [2022-01-28 16:06:46,268 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-28 16:06:46,268 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:06:46,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 16:06:46,269 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 16:06:46,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-01-28 16:06:46,285 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-28 16:06:46,285 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 16:06:46,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-28 16:06:46,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 16:06:46,488 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:46,489 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 16:06:46,740 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:46,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823298395] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 16:06:46,740 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 16:06:46,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-01-28 16:06:46,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358884672] [2022-01-28 16:06:46,740 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 16:06:46,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-28 16:06:46,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:06:46,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-28 16:06:46,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=536, Unknown=0, NotChecked=0, Total=650 [2022-01-28 16:06:46,741 INFO L87 Difference]: Start difference. First operand 463 states and 1020 transitions. Second operand has 26 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 25 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:47,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:06:47,782 INFO L93 Difference]: Finished difference Result 677 states and 1447 transitions. [2022-01-28 16:06:47,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-28 16:06:47,783 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 25 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-28 16:06:47,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:06:47,784 INFO L225 Difference]: With dead ends: 677 [2022-01-28 16:06:47,784 INFO L226 Difference]: Without dead ends: 667 [2022-01-28 16:06:47,784 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 19 SyntacticMatches, 4 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 912 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=687, Invalid=2853, Unknown=0, NotChecked=0, Total=3540 [2022-01-28 16:06:47,785 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 104 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 665 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-28 16:06:47,785 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 161 Invalid, 744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 665 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-28 16:06:47,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2022-01-28 16:06:47,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 447. [2022-01-28 16:06:47,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 446 states have (on average 2.201793721973094) internal successors, (982), 446 states have internal predecessors, (982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:47,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 982 transitions. [2022-01-28 16:06:47,791 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 982 transitions. Word has length 19 [2022-01-28 16:06:47,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:06:47,791 INFO L470 AbstractCegarLoop]: Abstraction has 447 states and 982 transitions. [2022-01-28 16:06:47,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 25 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:47,791 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 982 transitions. [2022-01-28 16:06:47,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-28 16:06:47,791 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:06:47,791 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:06:47,807 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2022-01-28 16:06:47,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable73 [2022-01-28 16:06:47,992 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:06:47,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:06:47,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1465553018, now seen corresponding path program 43 times [2022-01-28 16:06:47,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:06:47,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339344502] [2022-01-28 16:06:47,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:06:47,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:06:47,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:06:48,080 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:48,080 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:06:48,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339344502] [2022-01-28 16:06:48,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339344502] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 16:06:48,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997374341] [2022-01-28 16:06:48,080 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-28 16:06:48,081 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:06:48,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 16:06:48,082 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 16:06:48,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-01-28 16:06:48,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:06:48,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-28 16:06:48,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 16:06:48,288 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:48,288 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 16:06:48,560 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:48,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1997374341] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 16:06:48,560 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 16:06:48,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26 [2022-01-28 16:06:48,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178477164] [2022-01-28 16:06:48,560 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 16:06:48,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-28 16:06:48,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:06:48,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-28 16:06:48,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=591, Unknown=0, NotChecked=0, Total=702 [2022-01-28 16:06:48,561 INFO L87 Difference]: Start difference. First operand 447 states and 982 transitions. Second operand has 27 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 26 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:49,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:06:49,018 INFO L93 Difference]: Finished difference Result 588 states and 1271 transitions. [2022-01-28 16:06:49,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-28 16:06:49,018 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 26 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-28 16:06:49,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:06:49,019 INFO L225 Difference]: With dead ends: 588 [2022-01-28 16:06:49,019 INFO L226 Difference]: Without dead ends: 573 [2022-01-28 16:06:49,020 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 17 SyntacticMatches, 5 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=302, Invalid=1258, Unknown=0, NotChecked=0, Total=1560 [2022-01-28 16:06:49,020 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 73 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-28 16:06:49,020 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 196 Invalid, 619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-28 16:06:49,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2022-01-28 16:06:49,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 440. [2022-01-28 16:06:49,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 439 states have (on average 2.1958997722095672) internal successors, (964), 439 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:49,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 964 transitions. [2022-01-28 16:06:49,025 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 964 transitions. Word has length 19 [2022-01-28 16:06:49,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:06:49,025 INFO L470 AbstractCegarLoop]: Abstraction has 440 states and 964 transitions. [2022-01-28 16:06:49,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 26 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:49,025 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 964 transitions. [2022-01-28 16:06:49,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-28 16:06:49,026 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:06:49,026 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:06:49,041 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2022-01-28 16:06:49,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:06:49,226 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:06:49,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:06:49,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1503147992, now seen corresponding path program 44 times [2022-01-28 16:06:49,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:06:49,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474852780] [2022-01-28 16:06:49,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:06:49,227 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:06:49,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:06:49,312 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:49,312 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:06:49,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474852780] [2022-01-28 16:06:49,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474852780] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 16:06:49,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846537239] [2022-01-28 16:06:49,313 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-28 16:06:49,313 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:06:49,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 16:06:49,314 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 16:06:49,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-01-28 16:06:49,329 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-28 16:06:49,329 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 16:06:49,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-28 16:06:49,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 16:06:49,530 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:49,530 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 16:06:49,793 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:49,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846537239] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 16:06:49,793 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 16:06:49,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-01-28 16:06:49,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266987191] [2022-01-28 16:06:49,793 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 16:06:49,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-28 16:06:49,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:06:49,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-28 16:06:49,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=538, Unknown=0, NotChecked=0, Total=650 [2022-01-28 16:06:49,794 INFO L87 Difference]: Start difference. First operand 440 states and 964 transitions. Second operand has 26 states, 26 states have (on average 1.5) internal successors, (39), 25 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:50,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:06:50,181 INFO L93 Difference]: Finished difference Result 574 states and 1240 transitions. [2022-01-28 16:06:50,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-28 16:06:50,182 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.5) internal successors, (39), 25 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-28 16:06:50,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:06:50,182 INFO L225 Difference]: With dead ends: 574 [2022-01-28 16:06:50,182 INFO L226 Difference]: Without dead ends: 558 [2022-01-28 16:06:50,183 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 18 SyntacticMatches, 5 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=302, Invalid=1104, Unknown=0, NotChecked=0, Total=1406 [2022-01-28 16:06:50,183 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 57 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-28 16:06:50,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 169 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-28 16:06:50,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2022-01-28 16:06:50,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 418. [2022-01-28 16:06:50,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 417 states have (on average 2.158273381294964) internal successors, (900), 417 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:50,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 900 transitions. [2022-01-28 16:06:50,188 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 900 transitions. Word has length 19 [2022-01-28 16:06:50,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:06:50,188 INFO L470 AbstractCegarLoop]: Abstraction has 418 states and 900 transitions. [2022-01-28 16:06:50,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.5) internal successors, (39), 25 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:50,188 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 900 transitions. [2022-01-28 16:06:50,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-28 16:06:50,188 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:06:50,188 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:06:50,205 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2022-01-28 16:06:50,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:06:50,389 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:06:50,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:06:50,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1716108148, now seen corresponding path program 45 times [2022-01-28 16:06:50,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:06:50,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538889172] [2022-01-28 16:06:50,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:06:50,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:06:50,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:06:50,497 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:50,497 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:06:50,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538889172] [2022-01-28 16:06:50,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538889172] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 16:06:50,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117201646] [2022-01-28 16:06:50,497 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-28 16:06:50,497 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:06:50,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 16:06:50,498 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 16:06:50,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-01-28 16:06:50,514 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-28 16:06:50,514 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 16:06:50,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-28 16:06:50,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 16:06:50,715 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:50,715 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 16:06:51,004 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:51,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2117201646] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 16:06:51,005 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 16:06:51,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-01-28 16:06:51,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252008197] [2022-01-28 16:06:51,005 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 16:06:51,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-28 16:06:51,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:06:51,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-28 16:06:51,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=537, Unknown=0, NotChecked=0, Total=650 [2022-01-28 16:06:51,006 INFO L87 Difference]: Start difference. First operand 418 states and 900 transitions. Second operand has 26 states, 26 states have (on average 1.5) internal successors, (39), 25 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:51,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:06:51,421 INFO L93 Difference]: Finished difference Result 588 states and 1234 transitions. [2022-01-28 16:06:51,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-28 16:06:51,421 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.5) internal successors, (39), 25 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-28 16:06:51,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:06:51,422 INFO L225 Difference]: With dead ends: 588 [2022-01-28 16:06:51,422 INFO L226 Difference]: Without dead ends: 571 [2022-01-28 16:06:51,422 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 18 SyntacticMatches, 5 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 339 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=324, Invalid=1236, Unknown=0, NotChecked=0, Total=1560 [2022-01-28 16:06:51,423 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 100 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-28 16:06:51,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 136 Invalid, 543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-28 16:06:51,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2022-01-28 16:06:51,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 305. [2022-01-28 16:06:51,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 304 states have (on average 2.0690789473684212) internal successors, (629), 304 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:51,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 629 transitions. [2022-01-28 16:06:51,428 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 629 transitions. Word has length 19 [2022-01-28 16:06:51,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:06:51,428 INFO L470 AbstractCegarLoop]: Abstraction has 305 states and 629 transitions. [2022-01-28 16:06:51,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.5) internal successors, (39), 25 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:51,428 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 629 transitions. [2022-01-28 16:06:51,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-28 16:06:51,429 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:06:51,429 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:06:51,444 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2022-01-28 16:06:51,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2022-01-28 16:06:51,629 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:06:51,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:06:51,630 INFO L85 PathProgramCache]: Analyzing trace with hash 616588742, now seen corresponding path program 46 times [2022-01-28 16:06:51,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:06:51,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351755281] [2022-01-28 16:06:51,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:06:51,630 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:06:51,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:06:51,726 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:51,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:06:51,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351755281] [2022-01-28 16:06:51,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351755281] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 16:06:51,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681120924] [2022-01-28 16:06:51,727 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-28 16:06:51,727 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:06:51,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 16:06:51,728 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 16:06:51,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-01-28 16:06:51,746 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-28 16:06:51,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 16:06:51,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-28 16:06:51,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 16:06:51,925 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:51,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 16:06:52,127 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:52,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [681120924] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 16:06:52,127 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 16:06:52,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 24 [2022-01-28 16:06:52,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82810096] [2022-01-28 16:06:52,127 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 16:06:52,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-28 16:06:52,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:06:52,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-28 16:06:52,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=513, Unknown=0, NotChecked=0, Total=600 [2022-01-28 16:06:52,128 INFO L87 Difference]: Start difference. First operand 305 states and 629 transitions. Second operand has 25 states, 25 states have (on average 1.52) internal successors, (38), 24 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) [2022-01-28 16:06:53,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:06:53,591 INFO L93 Difference]: Finished difference Result 642 states and 1301 transitions. [2022-01-28 16:06:53,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-01-28 16:06:53,591 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.52) internal successors, (38), 24 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-28 16:06:53,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:06:53,592 INFO L225 Difference]: With dead ends: 642 [2022-01-28 16:06:53,592 INFO L226 Difference]: Without dead ends: 621 [2022-01-28 16:06:53,592 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 19 SyntacticMatches, 5 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1490 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1071, Invalid=4331, Unknown=0, NotChecked=0, Total=5402 [2022-01-28 16:06:53,592 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 205 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 768 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-28 16:06:53,593 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 229 Invalid, 855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 768 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-28 16:06:53,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2022-01-28 16:06:53,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 319. [2022-01-28 16:06:53,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 318 states have (on average 2.0754716981132075) internal successors, (660), 318 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:53,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 660 transitions. [2022-01-28 16:06:53,598 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 660 transitions. Word has length 19 [2022-01-28 16:06:53,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:06:53,599 INFO L470 AbstractCegarLoop]: Abstraction has 319 states and 660 transitions. [2022-01-28 16:06:53,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.52) internal successors, (38), 24 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) [2022-01-28 16:06:53,599 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 660 transitions. [2022-01-28 16:06:53,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-28 16:06:53,599 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:06:53,599 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:06:53,616 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2022-01-28 16:06:53,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2022-01-28 16:06:53,807 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:06:53,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:06:53,808 INFO L85 PathProgramCache]: Analyzing trace with hash 384055320, now seen corresponding path program 47 times [2022-01-28 16:06:53,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:06:53,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599825793] [2022-01-28 16:06:53,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:06:53,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:06:53,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:06:53,898 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:53,898 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:06:53,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599825793] [2022-01-28 16:06:53,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599825793] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 16:06:53,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [698862088] [2022-01-28 16:06:53,898 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-28 16:06:53,899 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:06:53,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 16:06:53,900 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 16:06:53,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-01-28 16:06:53,915 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-28 16:06:53,915 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 16:06:53,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-28 16:06:53,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 16:06:54,099 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:54,099 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-28 16:06:54,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [698862088] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 16:06:54,100 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-28 16:06:54,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 18 [2022-01-28 16:06:54,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018859080] [2022-01-28 16:06:54,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 16:06:54,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-28 16:06:54,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:06:54,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-28 16:06:54,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2022-01-28 16:06:54,100 INFO L87 Difference]: Start difference. First operand 319 states and 660 transitions. Second operand has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:54,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:06:54,156 INFO L93 Difference]: Finished difference Result 339 states and 688 transitions. [2022-01-28 16:06:54,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-28 16:06:54,157 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-28 16:06:54,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:06:54,157 INFO L225 Difference]: With dead ends: 339 [2022-01-28 16:06:54,157 INFO L226 Difference]: Without dead ends: 321 [2022-01-28 16:06:54,157 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2022-01-28 16:06:54,157 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 27 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 16:06:54,158 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 103 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 16:06:54,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2022-01-28 16:06:54,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 234. [2022-01-28 16:06:54,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 233 states have (on average 2.0343347639484977) internal successors, (474), 233 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:54,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 474 transitions. [2022-01-28 16:06:54,161 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 474 transitions. Word has length 19 [2022-01-28 16:06:54,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:06:54,161 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 474 transitions. [2022-01-28 16:06:54,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:54,161 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 474 transitions. [2022-01-28 16:06:54,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-28 16:06:54,161 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:06:54,161 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:06:54,176 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2022-01-28 16:06:54,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2022-01-28 16:06:54,362 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:06:54,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:06:54,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1578215086, now seen corresponding path program 48 times [2022-01-28 16:06:54,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:06:54,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760989673] [2022-01-28 16:06:54,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:06:54,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:06:54,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:06:54,451 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:54,452 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:06:54,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760989673] [2022-01-28 16:06:54,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760989673] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 16:06:54,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318310958] [2022-01-28 16:06:54,452 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-28 16:06:54,452 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:06:54,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 16:06:54,453 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 16:06:54,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-01-28 16:06:54,471 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-28 16:06:54,472 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 16:06:54,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-28 16:06:54,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 16:06:54,666 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:54,666 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 16:06:54,971 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:54,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318310958] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 16:06:54,971 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 16:06:54,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26 [2022-01-28 16:06:54,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983896964] [2022-01-28 16:06:54,971 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 16:06:54,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-28 16:06:54,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:06:54,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-28 16:06:54,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=588, Unknown=0, NotChecked=0, Total=702 [2022-01-28 16:06:54,972 INFO L87 Difference]: Start difference. First operand 234 states and 474 transitions. Second operand has 27 states, 27 states have (on average 1.4074074074074074) 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) [2022-01-28 16:06:56,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:06:56,458 INFO L93 Difference]: Finished difference Result 467 states and 903 transitions. [2022-01-28 16:06:56,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-01-28 16:06:56,458 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.4074074074074074) 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) Word has length 19 [2022-01-28 16:06:56,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:06:56,459 INFO L225 Difference]: With dead ends: 467 [2022-01-28 16:06:56,459 INFO L226 Difference]: Without dead ends: 449 [2022-01-28 16:06:56,459 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 17 SyntacticMatches, 5 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1281 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=844, Invalid=3848, Unknown=0, NotChecked=0, Total=4692 [2022-01-28 16:06:56,460 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 117 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 1018 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 1081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-28 16:06:56,460 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 274 Invalid, 1081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1018 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-28 16:06:56,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2022-01-28 16:06:56,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 232. [2022-01-28 16:06:56,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 231 states have (on average 2.0432900432900434) internal successors, (472), 231 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:56,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 472 transitions. [2022-01-28 16:06:56,464 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 472 transitions. Word has length 19 [2022-01-28 16:06:56,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:06:56,465 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 472 transitions. [2022-01-28 16:06:56,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.4074074074074074) 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) [2022-01-28 16:06:56,465 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 472 transitions. [2022-01-28 16:06:56,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-28 16:06:56,465 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:06:56,465 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:06:56,489 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2022-01-28 16:06:56,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2022-01-28 16:06:56,686 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:06:56,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:06:56,687 INFO L85 PathProgramCache]: Analyzing trace with hash 586868048, now seen corresponding path program 49 times [2022-01-28 16:06:56,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:06:56,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296858537] [2022-01-28 16:06:56,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:06:56,687 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:06:56,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:06:56,706 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-28 16:06:56,706 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:06:56,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296858537] [2022-01-28 16:06:56,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296858537] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 16:06:56,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268193890] [2022-01-28 16:06:56,707 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-28 16:06:56,707 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:06:56,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 16:06:56,708 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 16:06:56,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-01-28 16:06:56,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:06:56,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-28 16:06:56,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 16:06:56,751 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-28 16:06:56,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 16:06:56,816 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:56,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1268193890] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 16:06:56,817 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 16:06:56,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 10 [2022-01-28 16:06:56,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272280425] [2022-01-28 16:06:56,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 16:06:56,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-28 16:06:56,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:06:56,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-28 16:06:56,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-01-28 16:06:56,817 INFO L87 Difference]: Start difference. First operand 232 states and 472 transitions. Second operand has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 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) [2022-01-28 16:06:56,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:06:56,980 INFO L93 Difference]: Finished difference Result 341 states and 656 transitions. [2022-01-28 16:06:56,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-28 16:06:56,980 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 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 21 [2022-01-28 16:06:56,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:06:56,980 INFO L225 Difference]: With dead ends: 341 [2022-01-28 16:06:56,980 INFO L226 Difference]: Without dead ends: 341 [2022-01-28 16:06:56,981 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=145, Invalid=317, Unknown=0, NotChecked=0, Total=462 [2022-01-28 16:06:56,981 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 105 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 16:06:56,981 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 91 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 16:06:56,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2022-01-28 16:06:56,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 220. [2022-01-28 16:06:56,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 219 states have (on average 2.0182648401826486) internal successors, (442), 219 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:56,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 442 transitions. [2022-01-28 16:06:56,984 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 442 transitions. Word has length 21 [2022-01-28 16:06:56,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:06:56,984 INFO L470 AbstractCegarLoop]: Abstraction has 220 states and 442 transitions. [2022-01-28 16:06:56,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 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) [2022-01-28 16:06:56,984 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 442 transitions. [2022-01-28 16:06:56,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-28 16:06:56,984 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:06:56,984 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:06:56,999 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2022-01-28 16:06:57,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:06:57,185 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:06:57,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:06:57,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1168387906, now seen corresponding path program 50 times [2022-01-28 16:06:57,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:06:57,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866736897] [2022-01-28 16:06:57,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:06:57,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:06:57,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:06:57,215 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:57,215 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:06:57,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866736897] [2022-01-28 16:06:57,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866736897] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 16:06:57,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509084669] [2022-01-28 16:06:57,215 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-28 16:06:57,215 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:06:57,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 16:06:57,216 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 16:06:57,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-01-28 16:06:57,232 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-28 16:06:57,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 16:06:57,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-28 16:06:57,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 16:06:57,363 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-28 16:06:57,363 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 16:06:57,598 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-28 16:06:57,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509084669] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 16:06:57,598 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 16:06:57,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 10] total 22 [2022-01-28 16:06:57,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955791321] [2022-01-28 16:06:57,598 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 16:06:57,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-28 16:06:57,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:06:57,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-28 16:06:57,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2022-01-28 16:06:57,599 INFO L87 Difference]: Start difference. First operand 220 states and 442 transitions. Second operand has 22 states, 22 states have (on average 2.409090909090909) internal successors, (53), 22 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:58,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:06:58,103 INFO L93 Difference]: Finished difference Result 359 states and 680 transitions. [2022-01-28 16:06:58,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-28 16:06:58,104 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.409090909090909) internal successors, (53), 22 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-28 16:06:58,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:06:58,104 INFO L225 Difference]: With dead ends: 359 [2022-01-28 16:06:58,104 INFO L226 Difference]: Without dead ends: 229 [2022-01-28 16:06:58,105 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 608 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=419, Invalid=2031, Unknown=0, NotChecked=0, Total=2450 [2022-01-28 16:06:58,105 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 115 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-28 16:06:58,105 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 196 Invalid, 624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-28 16:06:58,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2022-01-28 16:06:58,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 129. [2022-01-28 16:06:58,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 128 states have (on average 1.6875) internal successors, (216), 128 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:58,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 216 transitions. [2022-01-28 16:06:58,107 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 216 transitions. Word has length 21 [2022-01-28 16:06:58,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:06:58,107 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 216 transitions. [2022-01-28 16:06:58,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.409090909090909) internal successors, (53), 22 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:58,107 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 216 transitions. [2022-01-28 16:06:58,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-28 16:06:58,107 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:06:58,107 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:06:58,123 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2022-01-28 16:06:58,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:06:58,308 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:06:58,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:06:58,308 INFO L85 PathProgramCache]: Analyzing trace with hash 792890298, now seen corresponding path program 51 times [2022-01-28 16:06:58,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:06:58,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968740098] [2022-01-28 16:06:58,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:06:58,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:06:58,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:06:58,339 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:58,339 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:06:58,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968740098] [2022-01-28 16:06:58,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968740098] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 16:06:58,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191249583] [2022-01-28 16:06:58,339 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-28 16:06:58,340 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:06:58,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 16:06:58,341 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 16:06:58,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-01-28 16:06:58,360 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-28 16:06:58,360 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 16:06:58,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-28 16:06:58,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 16:06:58,505 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-28 16:06:58,505 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-28 16:06:58,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191249583] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 16:06:58,505 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-28 16:06:58,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [7] total 16 [2022-01-28 16:06:58,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949497185] [2022-01-28 16:06:58,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 16:06:58,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-28 16:06:58,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:06:58,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-28 16:06:58,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2022-01-28 16:06:58,506 INFO L87 Difference]: Start difference. First operand 129 states and 216 transitions. Second operand has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:58,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:06:58,564 INFO L93 Difference]: Finished difference Result 141 states and 231 transitions. [2022-01-28 16:06:58,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-28 16:06:58,564 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-28 16:06:58,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:06:58,564 INFO L225 Difference]: With dead ends: 141 [2022-01-28 16:06:58,564 INFO L226 Difference]: Without dead ends: 122 [2022-01-28 16:06:58,565 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2022-01-28 16:06:58,565 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 25 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 16:06:58,565 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 86 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 16:06:58,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2022-01-28 16:06:58,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 119. [2022-01-28 16:06:58,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 1.694915254237288) internal successors, (200), 118 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:58,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 200 transitions. [2022-01-28 16:06:58,566 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 200 transitions. Word has length 21 [2022-01-28 16:06:58,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:06:58,566 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 200 transitions. [2022-01-28 16:06:58,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:58,566 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 200 transitions. [2022-01-28 16:06:58,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-28 16:06:58,567 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:06:58,567 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:06:58,582 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2022-01-28 16:06:58,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:06:58,767 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:06:58,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:06:58,768 INFO L85 PathProgramCache]: Analyzing trace with hash 295706866, now seen corresponding path program 52 times [2022-01-28 16:06:58,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:06:58,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187642211] [2022-01-28 16:06:58,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:06:58,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:06:58,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:06:58,792 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:58,792 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:06:58,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187642211] [2022-01-28 16:06:58,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187642211] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 16:06:58,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740792249] [2022-01-28 16:06:58,792 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-28 16:06:58,793 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:06:58,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 16:06:58,793 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 16:06:58,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-01-28 16:06:58,809 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-28 16:06:58,810 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 16:06:58,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-28 16:06:58,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 16:06:58,839 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:58,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 16:06:58,893 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:58,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1740792249] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 16:06:58,893 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 16:06:58,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-01-28 16:06:58,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947546702] [2022-01-28 16:06:58,893 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 16:06:58,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-28 16:06:58,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:06:58,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-28 16:06:58,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-01-28 16:06:58,894 INFO L87 Difference]: Start difference. First operand 119 states and 200 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:58,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:06:58,999 INFO L93 Difference]: Finished difference Result 166 states and 266 transitions. [2022-01-28 16:06:58,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-28 16:06:58,999 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-28 16:06:58,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:06:58,999 INFO L225 Difference]: With dead ends: 166 [2022-01-28 16:06:58,999 INFO L226 Difference]: Without dead ends: 156 [2022-01-28 16:06:58,999 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=125, Invalid=255, Unknown=0, NotChecked=0, Total=380 [2022-01-28 16:06:59,000 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 73 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 16:06:59,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 62 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 16:06:59,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2022-01-28 16:06:59,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 123. [2022-01-28 16:06:59,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 122 states have (on average 1.6885245901639345) internal successors, (206), 122 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:59,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 206 transitions. [2022-01-28 16:06:59,005 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 206 transitions. Word has length 21 [2022-01-28 16:06:59,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:06:59,005 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 206 transitions. [2022-01-28 16:06:59,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:59,005 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 206 transitions. [2022-01-28 16:06:59,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-28 16:06:59,005 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:06:59,005 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:06:59,020 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2022-01-28 16:06:59,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:06:59,206 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:06:59,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:06:59,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1843499624, now seen corresponding path program 53 times [2022-01-28 16:06:59,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:06:59,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378864309] [2022-01-28 16:06:59,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:06:59,206 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:06:59,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:06:59,241 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-28 16:06:59,242 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:06:59,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378864309] [2022-01-28 16:06:59,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378864309] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 16:06:59,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276338526] [2022-01-28 16:06:59,242 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-28 16:06:59,242 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:06:59,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 16:06:59,243 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 16:06:59,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-01-28 16:06:59,263 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-28 16:06:59,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 16:06:59,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-28 16:06:59,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 16:06:59,292 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-28 16:06:59,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 16:06:59,363 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:59,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [276338526] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 16:06:59,363 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 16:06:59,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 10 [2022-01-28 16:06:59,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288314219] [2022-01-28 16:06:59,364 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 16:06:59,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-28 16:06:59,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:06:59,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-28 16:06:59,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-01-28 16:06:59,364 INFO L87 Difference]: Start difference. First operand 123 states and 206 transitions. Second operand has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 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) [2022-01-28 16:06:59,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:06:59,445 INFO L93 Difference]: Finished difference Result 133 states and 215 transitions. [2022-01-28 16:06:59,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-28 16:06:59,445 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 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 21 [2022-01-28 16:06:59,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:06:59,445 INFO L225 Difference]: With dead ends: 133 [2022-01-28 16:06:59,445 INFO L226 Difference]: Without dead ends: 128 [2022-01-28 16:06:59,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2022-01-28 16:06:59,445 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 29 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 16:06:59,446 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 42 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 16:06:59,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2022-01-28 16:06:59,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 120. [2022-01-28 16:06:59,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 1.6890756302521008) internal successors, (201), 119 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:06:59,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 201 transitions. [2022-01-28 16:06:59,447 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 201 transitions. Word has length 21 [2022-01-28 16:06:59,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:06:59,447 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 201 transitions. [2022-01-28 16:06:59,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 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) [2022-01-28 16:06:59,447 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 201 transitions. [2022-01-28 16:06:59,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-28 16:06:59,448 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:06:59,448 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:06:59,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2022-01-28 16:06:59,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:06:59,651 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:06:59,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:06:59,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1492268056, now seen corresponding path program 54 times [2022-01-28 16:06:59,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:06:59,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507522441] [2022-01-28 16:06:59,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:06:59,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:06:59,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:06:59,671 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-28 16:06:59,672 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:06:59,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507522441] [2022-01-28 16:06:59,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507522441] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 16:06:59,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574357018] [2022-01-28 16:06:59,672 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-28 16:06:59,672 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:06:59,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 16:06:59,673 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 16:06:59,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-01-28 16:06:59,689 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-28 16:06:59,689 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 16:06:59,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-28 16:06:59,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 16:06:59,818 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:06:59,818 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 16:07:00,037 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:07:00,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [574357018] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 16:07:00,038 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 16:07:00,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 10] total 22 [2022-01-28 16:07:00,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145508984] [2022-01-28 16:07:00,038 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 16:07:00,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-28 16:07:00,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:07:00,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-28 16:07:00,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2022-01-28 16:07:00,039 INFO L87 Difference]: Start difference. First operand 120 states and 201 transitions. Second operand has 22 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 22 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:07:00,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:07:00,549 INFO L93 Difference]: Finished difference Result 247 states and 390 transitions. [2022-01-28 16:07:00,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-28 16:07:00,549 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 22 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-28 16:07:00,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:07:00,549 INFO L225 Difference]: With dead ends: 247 [2022-01-28 16:07:00,549 INFO L226 Difference]: Without dead ends: 189 [2022-01-28 16:07:00,550 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 661 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=442, Invalid=2210, Unknown=0, NotChecked=0, Total=2652 [2022-01-28 16:07:00,550 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 106 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-28 16:07:00,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 181 Invalid, 556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-28 16:07:00,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2022-01-28 16:07:00,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 123. [2022-01-28 16:07:00,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 122 states have (on average 1.6967213114754098) internal successors, (207), 122 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:07:00,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 207 transitions. [2022-01-28 16:07:00,552 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 207 transitions. Word has length 21 [2022-01-28 16:07:00,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:07:00,552 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 207 transitions. [2022-01-28 16:07:00,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 22 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:07:00,553 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 207 transitions. [2022-01-28 16:07:00,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-28 16:07:00,553 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:07:00,553 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:07:00,568 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2022-01-28 16:07:00,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:07:00,755 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:07:00,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:07:00,755 INFO L85 PathProgramCache]: Analyzing trace with hash 570565916, now seen corresponding path program 55 times [2022-01-28 16:07:00,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:07:00,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522246779] [2022-01-28 16:07:00,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:07:00,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:07:00,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:07:00,774 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-28 16:07:00,774 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:07:00,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522246779] [2022-01-28 16:07:00,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522246779] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 16:07:00,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032194424] [2022-01-28 16:07:00,775 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-28 16:07:00,775 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:07:00,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 16:07:00,775 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 16:07:00,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-01-28 16:07:00,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:07:00,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-28 16:07:00,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 16:07:00,818 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-28 16:07:00,818 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 16:07:00,877 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:07:00,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1032194424] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 16:07:00,877 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 16:07:00,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 10 [2022-01-28 16:07:00,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895686733] [2022-01-28 16:07:00,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 16:07:00,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-28 16:07:00,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:07:00,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-28 16:07:00,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-01-28 16:07:00,878 INFO L87 Difference]: Start difference. First operand 123 states and 207 transitions. Second operand has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 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) [2022-01-28 16:07:00,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:07:00,954 INFO L93 Difference]: Finished difference Result 164 states and 261 transitions. [2022-01-28 16:07:00,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-28 16:07:00,954 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 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 21 [2022-01-28 16:07:00,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:07:00,955 INFO L225 Difference]: With dead ends: 164 [2022-01-28 16:07:00,955 INFO L226 Difference]: Without dead ends: 160 [2022-01-28 16:07:00,955 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-01-28 16:07:00,955 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 80 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 16:07:00,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 37 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 16:07:00,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2022-01-28 16:07:00,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 122. [2022-01-28 16:07:00,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 121 states have (on average 1.6942148760330578) internal successors, (205), 121 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:07:00,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 205 transitions. [2022-01-28 16:07:00,957 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 205 transitions. Word has length 21 [2022-01-28 16:07:00,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:07:00,957 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 205 transitions. [2022-01-28 16:07:00,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 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) [2022-01-28 16:07:00,957 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 205 transitions. [2022-01-28 16:07:00,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-28 16:07:00,957 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:07:00,957 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:07:00,972 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2022-01-28 16:07:01,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable86 [2022-01-28 16:07:01,158 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:07:01,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:07:01,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1541862714, now seen corresponding path program 56 times [2022-01-28 16:07:01,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:07:01,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279781784] [2022-01-28 16:07:01,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:07:01,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:07:01,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:07:01,187 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:07:01,187 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:07:01,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279781784] [2022-01-28 16:07:01,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279781784] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 16:07:01,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361575534] [2022-01-28 16:07:01,187 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-28 16:07:01,187 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:07:01,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 16:07:01,188 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 16:07:01,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2022-01-28 16:07:01,207 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-28 16:07:01,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 16:07:01,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-28 16:07:01,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 16:07:01,234 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:07:01,234 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 16:07:01,285 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:07:01,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1361575534] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 16:07:01,286 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 16:07:01,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-01-28 16:07:01,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128720648] [2022-01-28 16:07:01,286 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 16:07:01,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-28 16:07:01,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:07:01,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-28 16:07:01,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-01-28 16:07:01,286 INFO L87 Difference]: Start difference. First operand 122 states and 205 transitions. Second operand has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 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) [2022-01-28 16:07:01,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:07:01,365 INFO L93 Difference]: Finished difference Result 157 states and 248 transitions. [2022-01-28 16:07:01,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-28 16:07:01,366 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 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 21 [2022-01-28 16:07:01,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:07:01,366 INFO L225 Difference]: With dead ends: 157 [2022-01-28 16:07:01,366 INFO L226 Difference]: Without dead ends: 145 [2022-01-28 16:07:01,366 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2022-01-28 16:07:01,366 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 44 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 16:07:01,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 62 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 16:07:01,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-01-28 16:07:01,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 121. [2022-01-28 16:07:01,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 120 states have (on average 1.65) internal successors, (198), 120 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:07:01,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 198 transitions. [2022-01-28 16:07:01,368 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 198 transitions. Word has length 21 [2022-01-28 16:07:01,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:07:01,368 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 198 transitions. [2022-01-28 16:07:01,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 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) [2022-01-28 16:07:01,368 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 198 transitions. [2022-01-28 16:07:01,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-28 16:07:01,369 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:07:01,369 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:07:01,384 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2022-01-28 16:07:01,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2022-01-28 16:07:01,571 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:07:01,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:07:01,572 INFO L85 PathProgramCache]: Analyzing trace with hash 462062504, now seen corresponding path program 57 times [2022-01-28 16:07:01,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:07:01,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018505213] [2022-01-28 16:07:01,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:07:01,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:07:01,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:07:01,594 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:07:01,594 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:07:01,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018505213] [2022-01-28 16:07:01,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018505213] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 16:07:01,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904090826] [2022-01-28 16:07:01,594 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-28 16:07:01,594 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:07:01,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 16:07:01,595 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 16:07:01,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2022-01-28 16:07:01,611 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-28 16:07:01,611 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 16:07:01,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-28 16:07:01,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 16:07:01,741 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-28 16:07:01,742 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-28 16:07:01,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904090826] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 16:07:01,742 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-28 16:07:01,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [7] total 16 [2022-01-28 16:07:01,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345560299] [2022-01-28 16:07:01,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 16:07:01,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-28 16:07:01,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:07:01,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-28 16:07:01,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2022-01-28 16:07:01,742 INFO L87 Difference]: Start difference. First operand 121 states and 198 transitions. Second operand has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:07:01,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:07:01,792 INFO L93 Difference]: Finished difference Result 134 states and 217 transitions. [2022-01-28 16:07:01,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-28 16:07:01,792 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-28 16:07:01,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:07:01,793 INFO L225 Difference]: With dead ends: 134 [2022-01-28 16:07:01,793 INFO L226 Difference]: Without dead ends: 81 [2022-01-28 16:07:01,793 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2022-01-28 16:07:01,793 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 23 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 16:07:01,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 110 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 16:07:01,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-01-28 16:07:01,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 79. [2022-01-28 16:07:01,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 1.5128205128205128) internal successors, (118), 78 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:07:01,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 118 transitions. [2022-01-28 16:07:01,794 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 118 transitions. Word has length 21 [2022-01-28 16:07:01,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:07:01,794 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 118 transitions. [2022-01-28 16:07:01,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:07:01,794 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 118 transitions. [2022-01-28 16:07:01,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-28 16:07:01,794 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:07:01,794 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:07:01,810 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2022-01-28 16:07:01,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:07:01,995 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:07:01,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:07:01,995 INFO L85 PathProgramCache]: Analyzing trace with hash -238154336, now seen corresponding path program 58 times [2022-01-28 16:07:01,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:07:01,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688656626] [2022-01-28 16:07:01,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:07:01,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:07:01,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:07:02,018 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:07:02,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:07:02,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688656626] [2022-01-28 16:07:02,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688656626] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 16:07:02,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8906202] [2022-01-28 16:07:02,018 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-28 16:07:02,018 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:07:02,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 16:07:02,019 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 16:07:02,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2022-01-28 16:07:02,035 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-28 16:07:02,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 16:07:02,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-28 16:07:02,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 16:07:02,061 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:07:02,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 16:07:02,104 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:07:02,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [8906202] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 16:07:02,104 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 16:07:02,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-01-28 16:07:02,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152736367] [2022-01-28 16:07:02,104 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 16:07:02,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-28 16:07:02,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:07:02,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-28 16:07:02,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-01-28 16:07:02,105 INFO L87 Difference]: Start difference. First operand 79 states and 118 transitions. Second operand has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:07:02,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:07:02,150 INFO L93 Difference]: Finished difference Result 103 states and 145 transitions. [2022-01-28 16:07:02,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-28 16:07:02,150 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-28 16:07:02,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:07:02,151 INFO L225 Difference]: With dead ends: 103 [2022-01-28 16:07:02,151 INFO L226 Difference]: Without dead ends: 99 [2022-01-28 16:07:02,151 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-01-28 16:07:02,151 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 59 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 16:07:02,151 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 50 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 16:07:02,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-01-28 16:07:02,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 79. [2022-01-28 16:07:02,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 1.5) internal successors, (117), 78 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:07:02,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 117 transitions. [2022-01-28 16:07:02,152 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 117 transitions. Word has length 21 [2022-01-28 16:07:02,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:07:02,152 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 117 transitions. [2022-01-28 16:07:02,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:07:02,152 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 117 transitions. [2022-01-28 16:07:02,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-28 16:07:02,152 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:07:02,153 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:07:02,168 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2022-01-28 16:07:02,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:07:02,353 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:07:02,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:07:02,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1605977192, now seen corresponding path program 59 times [2022-01-28 16:07:02,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:07:02,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838612701] [2022-01-28 16:07:02,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:07:02,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:07:02,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:07:02,380 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:07:02,380 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:07:02,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838612701] [2022-01-28 16:07:02,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838612701] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 16:07:02,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1417895736] [2022-01-28 16:07:02,380 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-28 16:07:02,380 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:07:02,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 16:07:02,381 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 16:07:02,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2022-01-28 16:07:02,397 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-28 16:07:02,397 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 16:07:02,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-28 16:07:02,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 16:07:02,439 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:07:02,439 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 16:07:02,494 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:07:02,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1417895736] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 16:07:02,494 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 16:07:02,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 12 [2022-01-28 16:07:02,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677353565] [2022-01-28 16:07:02,495 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 16:07:02,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-28 16:07:02,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:07:02,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-28 16:07:02,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-01-28 16:07:02,495 INFO L87 Difference]: Start difference. First operand 79 states and 117 transitions. Second operand has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 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) [2022-01-28 16:07:02,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:07:02,615 INFO L93 Difference]: Finished difference Result 100 states and 142 transitions. [2022-01-28 16:07:02,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-28 16:07:02,616 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-01-28 16:07:02,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:07:02,616 INFO L225 Difference]: With dead ends: 100 [2022-01-28 16:07:02,616 INFO L226 Difference]: Without dead ends: 100 [2022-01-28 16:07:02,616 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 41 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=130, Invalid=250, Unknown=0, NotChecked=0, Total=380 [2022-01-28 16:07:02,616 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 49 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 16:07:02,616 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 59 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 16:07:02,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-01-28 16:07:02,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 81. [2022-01-28 16:07:02,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.4875) internal successors, (119), 80 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:07:02,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 119 transitions. [2022-01-28 16:07:02,618 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 119 transitions. Word has length 23 [2022-01-28 16:07:02,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:07:02,618 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 119 transitions. [2022-01-28 16:07:02,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 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) [2022-01-28 16:07:02,618 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 119 transitions. [2022-01-28 16:07:02,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-28 16:07:02,619 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:07:02,619 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:07:02,641 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2022-01-28 16:07:02,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:07:02,833 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:07:02,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:07:02,833 INFO L85 PathProgramCache]: Analyzing trace with hash -2104779688, now seen corresponding path program 60 times [2022-01-28 16:07:02,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:07:02,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062750908] [2022-01-28 16:07:02,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:07:02,833 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:07:02,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:07:02,948 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:07:02,948 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:07:02,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062750908] [2022-01-28 16:07:02,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062750908] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 16:07:02,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697920779] [2022-01-28 16:07:02,948 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-28 16:07:02,948 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:07:02,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 16:07:02,949 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 16:07:02,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-01-28 16:07:02,966 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-28 16:07:02,966 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 16:07:02,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-28 16:07:02,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 16:07:03,226 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:07:03,226 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 16:07:03,573 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:07:03,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1697920779] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 16:07:03,573 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 16:07:03,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 31 [2022-01-28 16:07:03,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904325279] [2022-01-28 16:07:03,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 16:07:03,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-28 16:07:03,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:07:03,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-28 16:07:03,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=847, Unknown=0, NotChecked=0, Total=992 [2022-01-28 16:07:03,574 INFO L87 Difference]: Start difference. First operand 81 states and 119 transitions. Second operand has 32 states, 32 states have (on average 1.59375) internal successors, (51), 31 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:07:05,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:07:05,894 INFO L93 Difference]: Finished difference Result 198 states and 279 transitions. [2022-01-28 16:07:05,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-01-28 16:07:05,895 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.59375) internal successors, (51), 31 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-01-28 16:07:05,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:07:05,895 INFO L225 Difference]: With dead ends: 198 [2022-01-28 16:07:05,895 INFO L226 Difference]: Without dead ends: 98 [2022-01-28 16:07:05,896 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 23 SyntacticMatches, 4 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3294 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=2188, Invalid=8942, Unknown=0, NotChecked=0, Total=11130 [2022-01-28 16:07:05,896 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 357 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 807 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 1015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-28 16:07:05,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [357 Valid, 84 Invalid, 1015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 807 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-28 16:07:05,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-01-28 16:07:05,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 42. [2022-01-28 16:07:05,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.4390243902439024) internal successors, (59), 41 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:07:05,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 59 transitions. [2022-01-28 16:07:05,897 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 59 transitions. Word has length 23 [2022-01-28 16:07:05,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:07:05,897 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 59 transitions. [2022-01-28 16:07:05,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.59375) internal successors, (51), 31 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:07:05,897 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 59 transitions. [2022-01-28 16:07:05,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-28 16:07:05,897 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:07:05,897 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:07:05,912 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2022-01-28 16:07:06,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:07:06,098 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:07:06,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:07:06,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1282724490, now seen corresponding path program 61 times [2022-01-28 16:07:06,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:07:06,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352577770] [2022-01-28 16:07:06,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:07:06,098 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:07:06,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:07:06,228 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:07:06,228 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:07:06,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352577770] [2022-01-28 16:07:06,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352577770] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 16:07:06,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838570385] [2022-01-28 16:07:06,229 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-28 16:07:06,229 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:07:06,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 16:07:06,230 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 16:07:06,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-01-28 16:07:06,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:07:06,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-28 16:07:06,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 16:07:06,560 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:07:06,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 16:07:06,952 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:07:06,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1838570385] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 16:07:06,952 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 16:07:06,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 31 [2022-01-28 16:07:06,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779635373] [2022-01-28 16:07:06,952 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 16:07:06,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-28 16:07:06,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:07:06,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-28 16:07:06,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=819, Unknown=0, NotChecked=0, Total=992 [2022-01-28 16:07:06,953 INFO L87 Difference]: Start difference. First operand 42 states and 59 transitions. Second operand has 32 states, 32 states have (on average 1.53125) internal successors, (49), 31 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) [2022-01-28 16:07:07,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:07:07,567 INFO L93 Difference]: Finished difference Result 72 states and 101 transitions. [2022-01-28 16:07:07,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-28 16:07:07,567 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.53125) internal successors, (49), 31 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) Word has length 23 [2022-01-28 16:07:07,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:07:07,568 INFO L225 Difference]: With dead ends: 72 [2022-01-28 16:07:07,568 INFO L226 Difference]: Without dead ends: 57 [2022-01-28 16:07:07,568 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 23 SyntacticMatches, 4 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 721 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=525, Invalid=2127, Unknown=0, NotChecked=0, Total=2652 [2022-01-28 16:07:07,568 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 72 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-28 16:07:07,568 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 91 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-28 16:07:07,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-01-28 16:07:07,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 47. [2022-01-28 16:07:07,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.391304347826087) internal successors, (64), 46 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) [2022-01-28 16:07:07,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 64 transitions. [2022-01-28 16:07:07,569 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 64 transitions. Word has length 23 [2022-01-28 16:07:07,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:07:07,569 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 64 transitions. [2022-01-28 16:07:07,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.53125) internal successors, (49), 31 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) [2022-01-28 16:07:07,569 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 64 transitions. [2022-01-28 16:07:07,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-28 16:07:07,569 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:07:07,570 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:07:07,585 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2022-01-28 16:07:07,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:07:07,770 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:07:07,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:07:07,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1349590118, now seen corresponding path program 62 times [2022-01-28 16:07:07,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:07:07,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423852802] [2022-01-28 16:07:07,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:07:07,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:07:07,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:07:07,888 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:07:07,889 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:07:07,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423852802] [2022-01-28 16:07:07,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423852802] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 16:07:07,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [920474732] [2022-01-28 16:07:07,889 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-28 16:07:07,889 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:07:07,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 16:07:07,890 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 16:07:07,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-01-28 16:07:07,906 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-28 16:07:07,906 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 16:07:07,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-28 16:07:07,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 16:07:08,145 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:07:08,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 16:07:08,540 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:07:08,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [920474732] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 16:07:08,541 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 16:07:08,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 32 [2022-01-28 16:07:08,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731047796] [2022-01-28 16:07:08,541 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 16:07:08,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-28 16:07:08,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:07:08,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-28 16:07:08,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=885, Unknown=0, NotChecked=0, Total=1056 [2022-01-28 16:07:08,541 INFO L87 Difference]: Start difference. First operand 47 states and 64 transitions. Second operand has 33 states, 33 states have (on average 1.5151515151515151) internal successors, (50), 32 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) [2022-01-28 16:07:09,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:07:09,137 INFO L93 Difference]: Finished difference Result 68 states and 89 transitions. [2022-01-28 16:07:09,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-28 16:07:09,137 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.5151515151515151) internal successors, (50), 32 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-01-28 16:07:09,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:07:09,137 INFO L225 Difference]: With dead ends: 68 [2022-01-28 16:07:09,138 INFO L226 Difference]: Without dead ends: 44 [2022-01-28 16:07:09,138 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 22 SyntacticMatches, 4 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 742 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=491, Invalid=2265, Unknown=0, NotChecked=0, Total=2756 [2022-01-28 16:07:09,138 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 61 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-28 16:07:09,138 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 111 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 457 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-28 16:07:09,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-01-28 16:07:09,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 35. [2022-01-28 16:07:09,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.411764705882353) internal successors, (48), 34 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:07:09,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 48 transitions. [2022-01-28 16:07:09,139 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 48 transitions. Word has length 23 [2022-01-28 16:07:09,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:07:09,139 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 48 transitions. [2022-01-28 16:07:09,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.5151515151515151) internal successors, (50), 32 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) [2022-01-28 16:07:09,140 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 48 transitions. [2022-01-28 16:07:09,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-28 16:07:09,140 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:07:09,140 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:07:09,156 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2022-01-28 16:07:09,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable93 [2022-01-28 16:07:09,343 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:07:09,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:07:09,343 INFO L85 PathProgramCache]: Analyzing trace with hash 170345014, now seen corresponding path program 63 times [2022-01-28 16:07:09,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:07:09,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885609488] [2022-01-28 16:07:09,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:07:09,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:07:09,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:07:09,449 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:07:09,449 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:07:09,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885609488] [2022-01-28 16:07:09,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885609488] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 16:07:09,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831844811] [2022-01-28 16:07:09,449 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-28 16:07:09,449 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:07:09,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 16:07:09,450 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 16:07:09,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2022-01-28 16:07:09,467 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-28 16:07:09,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 16:07:09,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-28 16:07:09,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 16:07:09,666 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-28 16:07:09,666 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-28 16:07:09,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1831844811] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 16:07:09,667 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-28 16:07:09,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [13] total 20 [2022-01-28 16:07:09,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018136869] [2022-01-28 16:07:09,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 16:07:09,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-28 16:07:09,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:07:09,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-28 16:07:09,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2022-01-28 16:07:09,667 INFO L87 Difference]: Start difference. First operand 35 states and 48 transitions. Second operand has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:07:09,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:07:09,722 INFO L93 Difference]: Finished difference Result 49 states and 65 transitions. [2022-01-28 16:07:09,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-28 16:07:09,722 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-01-28 16:07:09,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:07:09,723 INFO L225 Difference]: With dead ends: 49 [2022-01-28 16:07:09,723 INFO L226 Difference]: Without dead ends: 35 [2022-01-28 16:07:09,723 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2022-01-28 16:07:09,723 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 10 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 16:07:09,723 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 44 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 16:07:09,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-01-28 16:07:09,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-01-28 16:07:09,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.2647058823529411) internal successors, (43), 34 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:07:09,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 43 transitions. [2022-01-28 16:07:09,724 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 43 transitions. Word has length 23 [2022-01-28 16:07:09,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:07:09,724 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 43 transitions. [2022-01-28 16:07:09,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:07:09,724 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 43 transitions. [2022-01-28 16:07:09,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-28 16:07:09,724 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:07:09,724 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:07:09,740 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2022-01-28 16:07:09,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:07:09,925 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:07:09,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:07:09,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1832997702, now seen corresponding path program 64 times [2022-01-28 16:07:09,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:07:09,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23775778] [2022-01-28 16:07:09,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:07:09,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:07:09,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:07:10,029 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:07:10,029 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:07:10,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23775778] [2022-01-28 16:07:10,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23775778] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 16:07:10,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2113910421] [2022-01-28 16:07:10,029 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-28 16:07:10,029 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:07:10,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 16:07:10,030 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 16:07:10,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2022-01-28 16:07:10,049 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-28 16:07:10,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 16:07:10,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-28 16:07:10,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 16:07:10,285 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:07:10,285 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 16:07:10,555 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:07:10,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2113910421] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 16:07:10,555 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 16:07:10,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 30 [2022-01-28 16:07:10,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564986485] [2022-01-28 16:07:10,555 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 16:07:10,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-28 16:07:10,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:07:10,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-28 16:07:10,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=815, Unknown=0, NotChecked=0, Total=930 [2022-01-28 16:07:10,556 INFO L87 Difference]: Start difference. First operand 35 states and 43 transitions. Second operand has 31 states, 31 states have (on average 1.6129032258064515) internal successors, (50), 30 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) [2022-01-28 16:07:11,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:07:11,812 INFO L93 Difference]: Finished difference Result 101 states and 124 transitions. [2022-01-28 16:07:11,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-28 16:07:11,812 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.6129032258064515) internal successors, (50), 30 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-01-28 16:07:11,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:07:11,812 INFO L225 Difference]: With dead ends: 101 [2022-01-28 16:07:11,812 INFO L226 Difference]: Without dead ends: 72 [2022-01-28 16:07:11,813 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 23 SyntacticMatches, 5 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1029 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=720, Invalid=3570, Unknown=0, NotChecked=0, Total=4290 [2022-01-28 16:07:11,813 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 168 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 650 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-28 16:07:11,813 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [168 Valid, 131 Invalid, 751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 650 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-28 16:07:11,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-01-28 16:07:11,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 41. [2022-01-28 16:07:11,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.25) internal successors, (50), 40 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) [2022-01-28 16:07:11,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 50 transitions. [2022-01-28 16:07:11,814 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 50 transitions. Word has length 23 [2022-01-28 16:07:11,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:07:11,814 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 50 transitions. [2022-01-28 16:07:11,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.6129032258064515) internal successors, (50), 30 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) [2022-01-28 16:07:11,814 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 50 transitions. [2022-01-28 16:07:11,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-28 16:07:11,814 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:07:11,814 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:07:11,830 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2022-01-28 16:07:12,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:07:12,023 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:07:12,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:07:12,024 INFO L85 PathProgramCache]: Analyzing trace with hash 977890622, now seen corresponding path program 65 times [2022-01-28 16:07:12,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:07:12,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798253640] [2022-01-28 16:07:12,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:07:12,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:07:12,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:07:12,163 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:07:12,163 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:07:12,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798253640] [2022-01-28 16:07:12,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798253640] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 16:07:12,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112464153] [2022-01-28 16:07:12,164 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-28 16:07:12,164 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:07:12,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 16:07:12,165 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 16:07:12,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-01-28 16:07:12,187 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-28 16:07:12,187 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 16:07:12,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-28 16:07:12,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 16:07:12,428 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-28 16:07:12,428 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-28 16:07:12,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [112464153] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 16:07:12,428 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-28 16:07:12,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [13] total 20 [2022-01-28 16:07:12,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779282819] [2022-01-28 16:07:12,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 16:07:12,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-28 16:07:12,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:07:12,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-28 16:07:12,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2022-01-28 16:07:12,429 INFO L87 Difference]: Start difference. First operand 41 states and 50 transitions. Second operand has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:07:12,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:07:12,472 INFO L93 Difference]: Finished difference Result 51 states and 62 transitions. [2022-01-28 16:07:12,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-28 16:07:12,472 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-01-28 16:07:12,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:07:12,473 INFO L225 Difference]: With dead ends: 51 [2022-01-28 16:07:12,473 INFO L226 Difference]: Without dead ends: 32 [2022-01-28 16:07:12,473 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2022-01-28 16:07:12,473 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 9 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 16:07:12,473 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 46 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 16:07:12,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-01-28 16:07:12,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-01-28 16:07:12,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 31 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:07:12,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2022-01-28 16:07:12,474 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 23 [2022-01-28 16:07:12,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:07:12,474 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2022-01-28 16:07:12,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:07:12,475 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2022-01-28 16:07:12,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-28 16:07:12,475 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 16:07:12,475 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 16:07:12,498 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2022-01-28 16:07:12,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable96 [2022-01-28 16:07:12,675 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 16:07:12,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 16:07:12,676 INFO L85 PathProgramCache]: Analyzing trace with hash 656925126, now seen corresponding path program 66 times [2022-01-28 16:07:12,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 16:07:12,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81083009] [2022-01-28 16:07:12,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 16:07:12,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 16:07:12,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 16:07:12,825 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 16:07:12,825 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 16:07:12,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81083009] [2022-01-28 16:07:12,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81083009] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 16:07:12,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370632704] [2022-01-28 16:07:12,825 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-28 16:07:12,825 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:07:12,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 16:07:12,826 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 16:07:12,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-01-28 16:07:12,843 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-28 16:07:12,843 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 16:07:12,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-28 16:07:12,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 16:07:13,050 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-28 16:07:13,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 16:07:13,292 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-28 16:07:13,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370632704] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 16:07:13,292 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 16:07:13,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10, 10] total 28 [2022-01-28 16:07:13,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283867927] [2022-01-28 16:07:13,292 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 16:07:13,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-01-28 16:07:13,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 16:07:13,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-01-28 16:07:13,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=694, Unknown=0, NotChecked=0, Total=812 [2022-01-28 16:07:13,293 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand has 29 states, 29 states have (on average 1.7586206896551724) internal successors, (51), 28 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:07:13,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 16:07:13,568 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2022-01-28 16:07:13,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-28 16:07:13,568 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.7586206896551724) internal successors, (51), 28 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-01-28 16:07:13,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 16:07:13,568 INFO L225 Difference]: With dead ends: 30 [2022-01-28 16:07:13,568 INFO L226 Difference]: Without dead ends: 0 [2022-01-28 16:07:13,569 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 36 SyntacticMatches, 4 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=351, Invalid=1455, Unknown=0, NotChecked=0, Total=1806 [2022-01-28 16:07:13,569 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 36 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 16:07:13,569 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 66 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 16:07:13,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-28 16:07:13,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-28 16:07:13,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:07:13,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-28 16:07:13,569 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2022-01-28 16:07:13,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 16:07:13,569 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-28 16:07:13,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.7586206896551724) internal successors, (51), 28 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 16:07:13,569 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-28 16:07:13,569 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-28 16:07:13,571 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (2 of 3 remaining) [2022-01-28 16:07:13,572 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-01-28 16:07:13,572 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-01-28 16:07:13,587 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2022-01-28 16:07:13,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 16:07:13,775 INFO L732 BasicCegarLoop]: Path program histogram: [66, 20, 6, 6] [2022-01-28 16:07:13,776 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-28 16:07:13,777 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-28 16:07:13,778 INFO L202 PluginConnector]: Adding new model easy11.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 04:07:13 BasicIcfg [2022-01-28 16:07:13,778 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-28 16:07:13,779 INFO L158 Benchmark]: Toolchain (without parser) took 105676.42ms. Allocated memory was 185.6MB in the beginning and 274.7MB in the end (delta: 89.1MB). Free memory was 144.0MB in the beginning and 129.6MB in the end (delta: 14.4MB). Peak memory consumption was 104.5MB. Max. memory is 8.0GB. [2022-01-28 16:07:13,779 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.12ms. Allocated memory is still 185.6MB. Free memory is still 145.1MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-28 16:07:13,779 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.20ms. Allocated memory is still 185.6MB. Free memory was 143.9MB in the beginning and 142.4MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-28 16:07:13,779 INFO L158 Benchmark]: Boogie Preprocessor took 15.50ms. Allocated memory is still 185.6MB. Free memory was 142.4MB in the beginning and 141.5MB in the end (delta: 933.2kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-28 16:07:13,779 INFO L158 Benchmark]: RCFGBuilder took 165.29ms. Allocated memory is still 185.6MB. Free memory was 141.5MB in the beginning and 132.9MB in the end (delta: 8.5MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2022-01-28 16:07:13,779 INFO L158 Benchmark]: TraceAbstraction took 105464.47ms. Allocated memory was 185.6MB in the beginning and 274.7MB in the end (delta: 89.1MB). Free memory was 132.5MB in the beginning and 129.6MB in the end (delta: 2.9MB). Peak memory consumption was 93.0MB. Max. memory is 8.0GB. [2022-01-28 16:07:13,780 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.12ms. Allocated memory is still 185.6MB. Free memory is still 145.1MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 27.20ms. Allocated memory is still 185.6MB. Free memory was 143.9MB in the beginning and 142.4MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 15.50ms. Allocated memory is still 185.6MB. Free memory was 142.4MB in the beginning and 141.5MB in the end (delta: 933.2kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 165.29ms. Allocated memory is still 185.6MB. Free memory was 141.5MB in the beginning and 132.9MB in the end (delta: 8.5MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * TraceAbstraction took 105464.47ms. Allocated memory was 185.6MB in the beginning and 274.7MB in the end (delta: 89.1MB). Free memory was 132.5MB in the beginning and 129.6MB in the end (delta: 2.9MB). Peak memory consumption was 93.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 43]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 36 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 105.4s, OverallIterations: 98, TraceHistogramMax: 3, PathProgramHistogramMax: 66, EmptinessCheckTime: 0.1s, AutomataDifference: 52.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7487 SdHoareTripleChecker+Valid, 17.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7487 mSDsluCounter, 11291 SdHoareTripleChecker+Invalid, 14.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 14404 mSDsCounter, 3868 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 39475 IncrementalHoareTripleChecker+Invalid, 43343 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3868 mSolverCounterUnsat, 1673 mSDtfsCounter, 39475 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4981 GetRequests, 1471 SyntacticMatches, 258 SemanticMatches, 3252 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43496 ImplicationChecksByTransitivity, 52.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=586occurred in iteration=67, InterpolantAutomatonStates: 2350, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 98 MinimizatonAttempts, 8331 StatesRemovedByMinimization, 95 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 35.3s InterpolantComputationTime, 3175 NumberOfCodeBlocks, 3175 NumberOfCodeBlocksAsserted, 242 NumberOfCheckSat, 4126 ConstructedInterpolants, 0 QuantifiedInterpolants, 36119 SizeOfPredicates, 411 NumberOfNonLiveVariables, 2628 ConjunctsInSsa, 881 ConjunctsInUnsatCore, 227 InterpolantComputations, 41 PerfectInterpolantSequences, 193/648 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-01-28 16:07:13,804 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...