/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/NonAtomicIncrement_2Threads_Loop.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9bbddad6b14272d9691b7fb6f1c011d15ab18596-9bbddad [2021-06-12 18:46:08,998 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-12 18:46:08,999 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-12 18:46:09,029 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-12 18:46:09,044 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-12 18:46:09,045 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-12 18:46:09,046 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-12 18:46:09,047 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-12 18:46:09,049 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-12 18:46:09,050 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-12 18:46:09,052 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-12 18:46:09,056 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-12 18:46:09,058 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-12 18:46:09,059 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-12 18:46:09,060 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-12 18:46:09,061 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-12 18:46:09,075 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-12 18:46:09,085 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 [2021-06-12 18:46:09,111 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-12 18:46:09,111 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-12 18:46:09,112 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-12 18:46:09,112 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-12 18:46:09,113 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-12 18:46:09,114 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-12 18:46:09,114 INFO L138 SettingsManager]: * Use SBE=true [2021-06-12 18:46:09,114 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-12 18:46:09,114 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-12 18:46:09,114 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-12 18:46:09,115 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-12 18:46:09,115 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-12 18:46:09,115 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-12 18:46:09,115 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-12 18:46:09,115 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-12 18:46:09,115 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-12 18:46:09,115 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-12 18:46:09,115 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-12 18:46:09,116 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-12 18:46:09,116 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-12 18:46:09,116 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-12 18:46:09,116 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-12 18:46:09,116 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-12 18:46:09,116 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-12 18:46:09,116 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-12 18:46:09,116 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-12 18:46:09,116 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-12 18:46:09,116 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-12 18:46:09,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-12 18:46:09,117 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-12 18:46:09,117 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-12 18:46:09,117 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-12 18:46:09,352 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-12 18:46:09,364 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-12 18:46:09,366 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-12 18:46:09,367 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-12 18:46:09,367 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-12 18:46:09,368 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/NonAtomicIncrement_2Threads_Loop.bpl [2021-06-12 18:46:09,368 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/NonAtomicIncrement_2Threads_Loop.bpl' [2021-06-12 18:46:09,396 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-12 18:46:09,398 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-12 18:46:09,398 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-12 18:46:09,398 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-12 18:46:09,398 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-12 18:46:09,406 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "NonAtomicIncrement_2Threads_Loop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 06:46:09" (1/1) ... [2021-06-12 18:46:09,411 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "NonAtomicIncrement_2Threads_Loop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 06:46:09" (1/1) ... [2021-06-12 18:46:09,415 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-12 18:46:09,416 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-12 18:46:09,416 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-12 18:46:09,416 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-12 18:46:09,421 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "NonAtomicIncrement_2Threads_Loop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 06:46:09" (1/1) ... [2021-06-12 18:46:09,422 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "NonAtomicIncrement_2Threads_Loop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 06:46:09" (1/1) ... [2021-06-12 18:46:09,422 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "NonAtomicIncrement_2Threads_Loop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 06:46:09" (1/1) ... [2021-06-12 18:46:09,422 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "NonAtomicIncrement_2Threads_Loop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 06:46:09" (1/1) ... [2021-06-12 18:46:09,423 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "NonAtomicIncrement_2Threads_Loop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 06:46:09" (1/1) ... [2021-06-12 18:46:09,426 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "NonAtomicIncrement_2Threads_Loop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 06:46:09" (1/1) ... [2021-06-12 18:46:09,426 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "NonAtomicIncrement_2Threads_Loop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 06:46:09" (1/1) ... [2021-06-12 18:46:09,427 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-12 18:46:09,427 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-12 18:46:09,428 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-12 18:46:09,428 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-12 18:46:09,429 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "NonAtomicIncrement_2Threads_Loop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 06:46:09" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-12 18:46:09,485 INFO L130 BoogieDeclarations]: Found specification of procedure fistIncrementProcess [2021-06-12 18:46:09,485 INFO L138 BoogieDeclarations]: Found implementation of procedure fistIncrementProcess [2021-06-12 18:46:09,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-12 18:46:09,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-12 18:46:09,486 INFO L130 BoogieDeclarations]: Found specification of procedure secondIncrementProcess [2021-06-12 18:46:09,486 INFO L138 BoogieDeclarations]: Found implementation of procedure secondIncrementProcess [2021-06-12 18:46:09,487 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-12 18:46:09,611 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-12 18:46:09,611 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-12 18:46:09,613 INFO L202 PluginConnector]: Adding new model NonAtomicIncrement_2Threads_Loop.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.06 06:46:09 BoogieIcfgContainer [2021-06-12 18:46:09,613 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-12 18:46:09,614 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-12 18:46:09,614 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-12 18:46:09,616 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-12 18:46:09,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "NonAtomicIncrement_2Threads_Loop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 06:46:09" (1/2) ... [2021-06-12 18:46:09,617 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1298b816 and model type NonAtomicIncrement_2Threads_Loop.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.06 06:46:09, skipping insertion in model container [2021-06-12 18:46:09,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "NonAtomicIncrement_2Threads_Loop.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.06 06:46:09" (2/2) ... [2021-06-12 18:46:09,618 INFO L111 eAbstractionObserver]: Analyzing ICFG NonAtomicIncrement_2Threads_Loop.bpl [2021-06-12 18:46:09,622 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-12 18:46:09,622 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-12 18:46:09,622 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-12 18:46:09,623 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-12 18:46:09,637 WARN L313 ript$VariableManager]: TermVariabe fistIncrementProcessThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 18:46:09,638 WARN L313 ript$VariableManager]: TermVariabe fistIncrementProcessThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 18:46:09,638 WARN L313 ript$VariableManager]: TermVariabe fistIncrementProcessThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 18:46:09,638 WARN L313 ript$VariableManager]: TermVariabe fistIncrementProcessThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 18:46:09,638 WARN L313 ript$VariableManager]: TermVariabe fistIncrementProcessThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 18:46:09,639 WARN L313 ript$VariableManager]: TermVariabe fistIncrementProcessThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 18:46:09,639 WARN L313 ript$VariableManager]: TermVariabe fistIncrementProcessThread1of1ForFork0_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 18:46:09,639 WARN L313 ript$VariableManager]: TermVariabe fistIncrementProcessThread1of1ForFork0_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 18:46:09,639 WARN L313 ript$VariableManager]: TermVariabe fistIncrementProcessThread1of1ForFork0_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 18:46:09,639 WARN L313 ript$VariableManager]: TermVariabe fistIncrementProcessThread1of1ForFork0_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 18:46:09,640 WARN L313 ript$VariableManager]: TermVariabe fistIncrementProcessThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 18:46:09,640 WARN L313 ript$VariableManager]: TermVariabe fistIncrementProcessThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 18:46:09,640 WARN L313 ript$VariableManager]: TermVariabe fistIncrementProcessThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 18:46:09,640 WARN L313 ript$VariableManager]: TermVariabe fistIncrementProcessThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 18:46:09,640 WARN L313 ript$VariableManager]: TermVariabe secondIncrementProcessThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 18:46:09,640 WARN L313 ript$VariableManager]: TermVariabe secondIncrementProcessThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 18:46:09,641 WARN L313 ript$VariableManager]: TermVariabe secondIncrementProcessThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 18:46:09,641 WARN L313 ript$VariableManager]: TermVariabe secondIncrementProcessThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 18:46:09,641 WARN L313 ript$VariableManager]: TermVariabe secondIncrementProcessThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 18:46:09,641 WARN L313 ript$VariableManager]: TermVariabe secondIncrementProcessThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 18:46:09,641 WARN L313 ript$VariableManager]: TermVariabe secondIncrementProcessThread1of1ForFork1_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 18:46:09,641 WARN L313 ript$VariableManager]: TermVariabe secondIncrementProcessThread1of1ForFork1_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 18:46:09,642 WARN L313 ript$VariableManager]: TermVariabe secondIncrementProcessThread1of1ForFork1_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 18:46:09,642 WARN L313 ript$VariableManager]: TermVariabe secondIncrementProcessThread1of1ForFork1_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 18:46:09,642 WARN L313 ript$VariableManager]: TermVariabe secondIncrementProcessThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 18:46:09,642 WARN L313 ript$VariableManager]: TermVariabe secondIncrementProcessThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 18:46:09,642 WARN L313 ript$VariableManager]: TermVariabe secondIncrementProcessThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 18:46:09,642 WARN L313 ript$VariableManager]: TermVariabe secondIncrementProcessThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 18:46:09,644 WARN L313 ript$VariableManager]: TermVariabe fistIncrementProcessThread1of1ForFork0_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 18:46:09,644 WARN L313 ript$VariableManager]: TermVariabe fistIncrementProcessThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 18:46:09,647 WARN L313 ript$VariableManager]: TermVariabe secondIncrementProcessThread1of1ForFork1_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 18:46:09,647 WARN L313 ript$VariableManager]: TermVariabe secondIncrementProcessThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 18:46:09,653 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-06-12 18:46:09,668 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-06-12 18:46:09,682 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-12 18:46:09,682 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-12 18:46:09,682 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-12 18:46:09,682 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-12 18:46:09,682 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-12 18:46:09,682 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-12 18:46:09,682 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-12 18:46:09,682 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-12 18:46:09,689 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 29 places, 26 transitions, 74 flow [2021-06-12 18:46:09,700 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 76 states, 74 states have (on average 1.9864864864864864) internal successors, (147), 75 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:46:09,701 INFO L276 IsEmpty]: Start isEmpty. Operand has 76 states, 74 states have (on average 1.9864864864864864) internal successors, (147), 75 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:46:09,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-06-12 18:46:09,707 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:46:09,707 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:46:09,707 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:46:09,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:46:09,711 INFO L82 PathProgramCache]: Analyzing trace with hash -1220513213, now seen corresponding path program 1 times [2021-06-12 18:46:09,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:46:09,717 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143078251] [2021-06-12 18:46:09,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:46:09,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:46:09,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:46:09,801 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:46:09,801 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143078251] [2021-06-12 18:46:09,802 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143078251] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:46:09,802 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:46:09,802 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-12 18:46:09,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636459051] [2021-06-12 18:46:09,805 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-12 18:46:09,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:46:09,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-12 18:46:09,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-12 18:46:09,821 INFO L87 Difference]: Start difference. First operand has 76 states, 74 states have (on average 1.9864864864864864) internal successors, (147), 75 states have internal predecessors, (147), 0 states have call successors, (0), 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 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:46:09,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:46:09,844 INFO L93 Difference]: Finished difference Result 112 states and 219 transitions. [2021-06-12 18:46:09,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-12 18:46:09,845 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-06-12 18:46:09,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:46:09,852 INFO L225 Difference]: With dead ends: 112 [2021-06-12 18:46:09,852 INFO L226 Difference]: Without dead ends: 110 [2021-06-12 18:46:09,853 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-12 18:46:09,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-06-12 18:46:09,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 83. [2021-06-12 18:46:09,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.9878048780487805) internal successors, (163), 82 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:46:09,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 163 transitions. [2021-06-12 18:46:09,879 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 163 transitions. Word has length 12 [2021-06-12 18:46:09,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:46:09,879 INFO L482 AbstractCegarLoop]: Abstraction has 83 states and 163 transitions. [2021-06-12 18:46:09,879 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:46:09,880 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 163 transitions. [2021-06-12 18:46:09,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-06-12 18:46:09,881 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:46:09,881 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:46:09,881 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-12 18:46:09,881 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:46:09,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:46:09,882 INFO L82 PathProgramCache]: Analyzing trace with hash -1970774266, now seen corresponding path program 1 times [2021-06-12 18:46:09,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:46:09,882 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282757580] [2021-06-12 18:46:09,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:46:09,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:46:09,908 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:46:09,909 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:46:09,909 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282757580] [2021-06-12 18:46:09,909 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282757580] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 18:46:09,909 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501903394] [2021-06-12 18:46:09,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 18:46:09,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:46:09,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjunts are in the unsatisfiable core [2021-06-12 18:46:09,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 18:46:10,023 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-12 18:46:10,024 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501903394] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:46:10,024 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-06-12 18:46:10,024 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-06-12 18:46:10,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071788068] [2021-06-12 18:46:10,027 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-12 18:46:10,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:46:10,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-12 18:46:10,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-06-12 18:46:10,035 INFO L87 Difference]: Start difference. First operand 83 states and 163 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:46:10,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:46:10,061 INFO L93 Difference]: Finished difference Result 119 states and 235 transitions. [2021-06-12 18:46:10,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-12 18:46:10,063 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-06-12 18:46:10,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:46:10,064 INFO L225 Difference]: With dead ends: 119 [2021-06-12 18:46:10,064 INFO L226 Difference]: Without dead ends: 119 [2021-06-12 18:46:10,064 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 15.3ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-06-12 18:46:10,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-06-12 18:46:10,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 92. [2021-06-12 18:46:10,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 1.989010989010989) internal successors, (181), 91 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:46:10,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 181 transitions. [2021-06-12 18:46:10,071 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 181 transitions. Word has length 16 [2021-06-12 18:46:10,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:46:10,071 INFO L482 AbstractCegarLoop]: Abstraction has 92 states and 181 transitions. [2021-06-12 18:46:10,071 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:46:10,072 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 181 transitions. [2021-06-12 18:46:10,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-12 18:46:10,074 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:46:10,075 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:46:10,290 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-06-12 18:46:10,290 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:46:10,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:46:10,294 INFO L82 PathProgramCache]: Analyzing trace with hash -1734067575, now seen corresponding path program 1 times [2021-06-12 18:46:10,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:46:10,294 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798354767] [2021-06-12 18:46:10,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:46:10,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:46:10,329 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-12 18:46:10,329 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:46:10,329 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798354767] [2021-06-12 18:46:10,332 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798354767] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 18:46:10,332 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086104928] [2021-06-12 18:46:10,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 18:46:10,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:46:10,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 3 conjunts are in the unsatisfiable core [2021-06-12 18:46:10,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 18:46:10,412 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-12 18:46:10,413 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1086104928] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 18:46:10,413 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 18:46:10,413 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-06-12 18:46:10,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795416536] [2021-06-12 18:46:10,413 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-12 18:46:10,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:46:10,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-12 18:46:10,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-06-12 18:46:10,414 INFO L87 Difference]: Start difference. First operand 92 states and 181 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:46:10,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:46:10,430 INFO L93 Difference]: Finished difference Result 162 states and 321 transitions. [2021-06-12 18:46:10,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-12 18:46:10,431 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-12 18:46:10,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:46:10,432 INFO L225 Difference]: With dead ends: 162 [2021-06-12 18:46:10,432 INFO L226 Difference]: Without dead ends: 162 [2021-06-12 18:46:10,432 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-06-12 18:46:10,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-06-12 18:46:10,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 132. [2021-06-12 18:46:10,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 1.9923664122137406) internal successors, (261), 131 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:46:10,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 261 transitions. [2021-06-12 18:46:10,447 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 261 transitions. Word has length 20 [2021-06-12 18:46:10,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:46:10,448 INFO L482 AbstractCegarLoop]: Abstraction has 132 states and 261 transitions. [2021-06-12 18:46:10,448 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:46:10,449 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 261 transitions. [2021-06-12 18:46:10,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-12 18:46:10,451 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:46:10,451 INFO L472 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:46:10,651 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 18:46:10,652 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:46:10,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:46:10,652 INFO L82 PathProgramCache]: Analyzing trace with hash 996193356, now seen corresponding path program 2 times [2021-06-12 18:46:10,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:46:10,652 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881822058] [2021-06-12 18:46:10,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:46:10,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:46:10,681 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-06-12 18:46:10,682 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:46:10,682 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881822058] [2021-06-12 18:46:10,682 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881822058] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 18:46:10,682 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715556433] [2021-06-12 18:46:10,682 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 18:46:10,718 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-12 18:46:10,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 18:46:10,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 3 conjunts are in the unsatisfiable core [2021-06-12 18:46:10,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 18:46:10,799 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-06-12 18:46:10,799 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1715556433] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 18:46:10,799 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 18:46:10,799 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-06-12 18:46:10,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775326128] [2021-06-12 18:46:10,800 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-12 18:46:10,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:46:10,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-12 18:46:10,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-06-12 18:46:10,801 INFO L87 Difference]: Start difference. First operand 132 states and 261 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:46:10,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:46:10,822 INFO L93 Difference]: Finished difference Result 223 states and 443 transitions. [2021-06-12 18:46:10,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-12 18:46:10,829 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 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 24 [2021-06-12 18:46:10,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:46:10,830 INFO L225 Difference]: With dead ends: 223 [2021-06-12 18:46:10,830 INFO L226 Difference]: Without dead ends: 223 [2021-06-12 18:46:10,830 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-06-12 18:46:10,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2021-06-12 18:46:10,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 184. [2021-06-12 18:46:10,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 183 states have (on average 1.994535519125683) internal successors, (365), 183 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:46:10,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 365 transitions. [2021-06-12 18:46:10,840 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 365 transitions. Word has length 24 [2021-06-12 18:46:10,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:46:10,840 INFO L482 AbstractCegarLoop]: Abstraction has 184 states and 365 transitions. [2021-06-12 18:46:10,840 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:46:10,841 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 365 transitions. [2021-06-12 18:46:10,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-12 18:46:10,842 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:46:10,842 INFO L472 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:46:11,051 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 18:46:11,051 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:46:11,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:46:11,051 INFO L82 PathProgramCache]: Analyzing trace with hash -819692337, now seen corresponding path program 3 times [2021-06-12 18:46:11,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:46:11,052 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702972338] [2021-06-12 18:46:11,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:46:11,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:46:11,076 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-06-12 18:46:11,076 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:46:11,076 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702972338] [2021-06-12 18:46:11,076 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702972338] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 18:46:11,076 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802655443] [2021-06-12 18:46:11,076 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 18:46:11,110 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-12 18:46:11,110 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 18:46:11,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 4 conjunts are in the unsatisfiable core [2021-06-12 18:46:11,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 18:46:11,172 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-06-12 18:46:11,172 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [802655443] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 18:46:11,172 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 18:46:11,172 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-06-12 18:46:11,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509841785] [2021-06-12 18:46:11,173 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-12 18:46:11,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:46:11,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-12 18:46:11,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-06-12 18:46:11,173 INFO L87 Difference]: Start difference. First operand 184 states and 365 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 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) [2021-06-12 18:46:11,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:46:11,355 INFO L93 Difference]: Finished difference Result 308 states and 613 transitions. [2021-06-12 18:46:11,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-12 18:46:11,363 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 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) Word has length 28 [2021-06-12 18:46:11,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:46:11,365 INFO L225 Difference]: With dead ends: 308 [2021-06-12 18:46:11,365 INFO L226 Difference]: Without dead ends: 308 [2021-06-12 18:46:11,366 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 114.9ms TimeCoverageRelationStatistics Valid=100, Invalid=172, Unknown=0, NotChecked=0, Total=272 [2021-06-12 18:46:11,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2021-06-12 18:46:11,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 308. [2021-06-12 18:46:11,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 307 states have (on average 1.996742671009772) internal successors, (613), 307 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:46:11,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 613 transitions. [2021-06-12 18:46:11,386 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 613 transitions. Word has length 28 [2021-06-12 18:46:11,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:46:11,386 INFO L482 AbstractCegarLoop]: Abstraction has 308 states and 613 transitions. [2021-06-12 18:46:11,386 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 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) [2021-06-12 18:46:11,386 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 613 transitions. [2021-06-12 18:46:11,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-12 18:46:11,394 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:46:11,394 INFO L472 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:46:11,594 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 18:46:11,594 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:46:11,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:46:11,595 INFO L82 PathProgramCache]: Analyzing trace with hash -677955307, now seen corresponding path program 4 times [2021-06-12 18:46:11,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:46:11,595 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023591155] [2021-06-12 18:46:11,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:46:11,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:46:11,720 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:46:11,720 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:46:11,720 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023591155] [2021-06-12 18:46:11,721 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023591155] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:46:11,721 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:46:11,721 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-06-12 18:46:11,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509143793] [2021-06-12 18:46:11,721 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-12 18:46:11,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:46:11,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-12 18:46:11,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2021-06-12 18:46:11,722 INFO L87 Difference]: Start difference. First operand 308 states and 613 transitions. Second operand has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:46:11,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:46:11,973 INFO L93 Difference]: Finished difference Result 1129 states and 2254 transitions. [2021-06-12 18:46:11,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-12 18:46:11,973 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 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 36 [2021-06-12 18:46:11,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:46:11,976 INFO L225 Difference]: With dead ends: 1129 [2021-06-12 18:46:11,976 INFO L226 Difference]: Without dead ends: 572 [2021-06-12 18:46:11,976 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 181.4ms TimeCoverageRelationStatistics Valid=278, Invalid=534, Unknown=0, NotChecked=0, Total=812 [2021-06-12 18:46:11,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2021-06-12 18:46:11,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 365. [2021-06-12 18:46:11,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 364 states have (on average 1.9752747252747254) internal successors, (719), 364 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:46:12,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 719 transitions. [2021-06-12 18:46:12,003 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 719 transitions. Word has length 36 [2021-06-12 18:46:12,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:46:12,003 INFO L482 AbstractCegarLoop]: Abstraction has 365 states and 719 transitions. [2021-06-12 18:46:12,004 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:46:12,004 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 719 transitions. [2021-06-12 18:46:12,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-12 18:46:12,006 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:46:12,006 INFO L472 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:46:12,006 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-12 18:46:12,006 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:46:12,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:46:12,007 INFO L82 PathProgramCache]: Analyzing trace with hash -1337752009, now seen corresponding path program 5 times [2021-06-12 18:46:12,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:46:12,007 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406337309] [2021-06-12 18:46:12,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:46:12,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:46:12,121 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:46:12,122 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:46:12,122 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406337309] [2021-06-12 18:46:12,122 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406337309] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 18:46:12,122 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197575555] [2021-06-12 18:46:12,122 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 18:46:12,156 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-12 18:46:12,157 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 18:46:12,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-12 18:46:12,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 18:46:12,248 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:46:12,248 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197575555] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 18:46:12,248 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 18:46:12,248 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2021-06-12 18:46:12,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309788172] [2021-06-12 18:46:12,249 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-12 18:46:12,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:46:12,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-12 18:46:12,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-06-12 18:46:12,249 INFO L87 Difference]: Start difference. First operand 365 states and 719 transitions. Second operand has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:46:12,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:46:12,428 INFO L93 Difference]: Finished difference Result 1051 states and 2075 transitions. [2021-06-12 18:46:12,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-12 18:46:12,429 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 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 36 [2021-06-12 18:46:12,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:46:12,430 INFO L225 Difference]: With dead ends: 1051 [2021-06-12 18:46:12,431 INFO L226 Difference]: Without dead ends: 491 [2021-06-12 18:46:12,431 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 149.6ms TimeCoverageRelationStatistics Valid=208, Invalid=392, Unknown=0, NotChecked=0, Total=600 [2021-06-12 18:46:12,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2021-06-12 18:46:12,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 331. [2021-06-12 18:46:12,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 330 states have (on average 1.9545454545454546) internal successors, (645), 330 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:46:12,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 645 transitions. [2021-06-12 18:46:12,437 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 645 transitions. Word has length 36 [2021-06-12 18:46:12,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:46:12,438 INFO L482 AbstractCegarLoop]: Abstraction has 331 states and 645 transitions. [2021-06-12 18:46:12,438 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:46:12,438 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 645 transitions. [2021-06-12 18:46:12,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-12 18:46:12,438 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:46:12,439 INFO L472 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:46:12,652 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-06-12 18:46:12,653 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:46:12,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:46:12,653 INFO L82 PathProgramCache]: Analyzing trace with hash 31796177, now seen corresponding path program 6 times [2021-06-12 18:46:12,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:46:12,653 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009404234] [2021-06-12 18:46:12,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:46:12,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:46:12,737 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:46:12,737 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:46:12,737 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009404234] [2021-06-12 18:46:12,737 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009404234] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 18:46:12,737 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238366703] [2021-06-12 18:46:12,737 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 18:46:12,770 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-06-12 18:46:12,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 18:46:12,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-12 18:46:12,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 18:46:12,843 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:46:12,843 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1238366703] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 18:46:12,843 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 18:46:12,843 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2021-06-12 18:46:12,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877172217] [2021-06-12 18:46:12,844 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-12 18:46:12,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:46:12,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-12 18:46:12,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-06-12 18:46:12,844 INFO L87 Difference]: Start difference. First operand 331 states and 645 transitions. Second operand has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:46:13,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:46:13,048 INFO L93 Difference]: Finished difference Result 1357 states and 2666 transitions. [2021-06-12 18:46:13,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-12 18:46:13,048 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 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 36 [2021-06-12 18:46:13,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:46:13,053 INFO L225 Difference]: With dead ends: 1357 [2021-06-12 18:46:13,053 INFO L226 Difference]: Without dead ends: 1011 [2021-06-12 18:46:13,054 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 141.9ms TimeCoverageRelationStatistics Valid=204, Invalid=396, Unknown=0, NotChecked=0, Total=600 [2021-06-12 18:46:13,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2021-06-12 18:46:13,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 550. [2021-06-12 18:46:13,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 549 states have (on average 1.97632058287796) internal successors, (1085), 549 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:46:13,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 1085 transitions. [2021-06-12 18:46:13,066 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 1085 transitions. Word has length 36 [2021-06-12 18:46:13,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:46:13,066 INFO L482 AbstractCegarLoop]: Abstraction has 550 states and 1085 transitions. [2021-06-12 18:46:13,066 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:46:13,066 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 1085 transitions. [2021-06-12 18:46:13,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-12 18:46:13,067 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:46:13,067 INFO L472 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:46:13,280 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 18:46:13,281 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:46:13,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:46:13,281 INFO L82 PathProgramCache]: Analyzing trace with hash -1184609583, now seen corresponding path program 7 times [2021-06-12 18:46:13,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:46:13,281 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818010352] [2021-06-12 18:46:13,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:46:13,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:46:13,357 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:46:13,357 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:46:13,357 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818010352] [2021-06-12 18:46:13,357 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818010352] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 18:46:13,358 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1837316251] [2021-06-12 18:46:13,358 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-06-12 18:46:13,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:46:13,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 10 conjunts are in the unsatisfiable core Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 18:46:13,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 18:46:13,469 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:46:13,469 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1837316251] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 18:46:13,469 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 18:46:13,469 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-06-12 18:46:13,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450482577] [2021-06-12 18:46:13,472 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-12 18:46:13,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:46:13,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-12 18:46:13,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-06-12 18:46:13,473 INFO L87 Difference]: Start difference. First operand 550 states and 1085 transitions. Second operand has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:46:13,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:46:13,631 INFO L93 Difference]: Finished difference Result 976 states and 1894 transitions. [2021-06-12 18:46:13,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-12 18:46:13,632 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 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 36 [2021-06-12 18:46:13,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:46:13,635 INFO L225 Difference]: With dead ends: 976 [2021-06-12 18:46:13,635 INFO L226 Difference]: Without dead ends: 782 [2021-06-12 18:46:13,635 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 99.2ms TimeCoverageRelationStatistics Valid=133, Invalid=247, Unknown=0, NotChecked=0, Total=380 [2021-06-12 18:46:13,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 782 states. [2021-06-12 18:46:13,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 782 to 488. [2021-06-12 18:46:13,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 488 states, 487 states have (on average 1.9548254620123204) internal successors, (952), 487 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:46:13,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 952 transitions. [2021-06-12 18:46:13,644 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 952 transitions. Word has length 36 [2021-06-12 18:46:13,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:46:13,645 INFO L482 AbstractCegarLoop]: Abstraction has 488 states and 952 transitions. [2021-06-12 18:46:13,645 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:46:13,645 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 952 transitions. [2021-06-12 18:46:13,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-12 18:46:13,646 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:46:13,646 INFO L472 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:46:13,860 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 18:46:13,861 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:46:13,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:46:13,861 INFO L82 PathProgramCache]: Analyzing trace with hash 1312549329, now seen corresponding path program 8 times [2021-06-12 18:46:13,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:46:13,861 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622053653] [2021-06-12 18:46:13,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:46:13,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:46:13,905 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-06-12 18:46:13,905 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:46:13,905 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622053653] [2021-06-12 18:46:13,905 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622053653] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 18:46:13,905 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550410474] [2021-06-12 18:46:13,905 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-06-12 18:46:13,939 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-12 18:46:13,939 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 18:46:13,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-12 18:46:13,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 18:46:14,001 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-06-12 18:46:14,001 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1550410474] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 18:46:14,001 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 18:46:14,001 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-06-12 18:46:14,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161534471] [2021-06-12 18:46:14,001 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 18:46:14,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:46:14,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 18:46:14,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:46:14,002 INFO L87 Difference]: Start difference. First operand 488 states and 952 transitions. Second operand has 9 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:46:14,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:46:14,105 INFO L93 Difference]: Finished difference Result 728 states and 1403 transitions. [2021-06-12 18:46:14,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:46:14,106 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-06-12 18:46:14,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:46:14,107 INFO L225 Difference]: With dead ends: 728 [2021-06-12 18:46:14,107 INFO L226 Difference]: Without dead ends: 451 [2021-06-12 18:46:14,107 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 70.1ms TimeCoverageRelationStatistics Valid=76, Invalid=134, Unknown=0, NotChecked=0, Total=210 [2021-06-12 18:46:14,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2021-06-12 18:46:14,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 297. [2021-06-12 18:46:14,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 296 states have (on average 1.929054054054054) internal successors, (571), 296 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:46:14,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 571 transitions. [2021-06-12 18:46:14,112 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 571 transitions. Word has length 36 [2021-06-12 18:46:14,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:46:14,113 INFO L482 AbstractCegarLoop]: Abstraction has 297 states and 571 transitions. [2021-06-12 18:46:14,113 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:46:14,113 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 571 transitions. [2021-06-12 18:46:14,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-12 18:46:14,113 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:46:14,113 INFO L472 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:46:14,328 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-06-12 18:46:14,331 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:46:14,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:46:14,331 INFO L82 PathProgramCache]: Analyzing trace with hash -1197050773, now seen corresponding path program 9 times [2021-06-12 18:46:14,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:46:14,331 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548688640] [2021-06-12 18:46:14,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:46:14,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:46:14,399 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:46:14,399 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:46:14,399 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548688640] [2021-06-12 18:46:14,399 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548688640] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 18:46:14,399 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915525668] [2021-06-12 18:46:14,400 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 18:46:14,437 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-06-12 18:46:14,437 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 18:46:14,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-12 18:46:14,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 18:46:14,501 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:46:14,501 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [915525668] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 18:46:14,501 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 18:46:14,501 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2021-06-12 18:46:14,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889559486] [2021-06-12 18:46:14,501 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-12 18:46:14,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:46:14,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-12 18:46:14,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-06-12 18:46:14,502 INFO L87 Difference]: Start difference. First operand 297 states and 571 transitions. Second operand has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:46:14,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:46:14,656 INFO L93 Difference]: Finished difference Result 982 states and 1931 transitions. [2021-06-12 18:46:14,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-12 18:46:14,657 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 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 36 [2021-06-12 18:46:14,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:46:14,658 INFO L225 Difference]: With dead ends: 982 [2021-06-12 18:46:14,658 INFO L226 Difference]: Without dead ends: 495 [2021-06-12 18:46:14,658 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 123.7ms TimeCoverageRelationStatistics Valid=192, Invalid=360, Unknown=0, NotChecked=0, Total=552 [2021-06-12 18:46:14,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2021-06-12 18:46:14,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 318. [2021-06-12 18:46:14,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 317 states have (on average 1.9369085173501577) internal successors, (614), 317 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:46:14,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 614 transitions. [2021-06-12 18:46:14,664 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 614 transitions. Word has length 36 [2021-06-12 18:46:14,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:46:14,664 INFO L482 AbstractCegarLoop]: Abstraction has 318 states and 614 transitions. [2021-06-12 18:46:14,664 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:46:14,664 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 614 transitions. [2021-06-12 18:46:14,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-12 18:46:14,665 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:46:14,665 INFO L472 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:46:14,881 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 18:46:14,882 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:46:14,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:46:14,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1330918033, now seen corresponding path program 10 times [2021-06-12 18:46:14,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:46:14,882 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30911815] [2021-06-12 18:46:14,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:46:14,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:46:14,941 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:46:14,941 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:46:14,941 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30911815] [2021-06-12 18:46:14,941 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30911815] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 18:46:14,941 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770252886] [2021-06-12 18:46:14,941 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 18:46:14,968 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-12 18:46:14,968 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 18:46:14,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-12 18:46:14,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 18:46:15,033 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:46:15,034 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1770252886] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 18:46:15,034 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 18:46:15,034 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2021-06-12 18:46:15,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760514704] [2021-06-12 18:46:15,034 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-12 18:46:15,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:46:15,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-12 18:46:15,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-06-12 18:46:15,035 INFO L87 Difference]: Start difference. First operand 318 states and 614 transitions. Second operand has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:46:15,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:46:15,182 INFO L93 Difference]: Finished difference Result 960 states and 1883 transitions. [2021-06-12 18:46:15,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-12 18:46:15,182 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 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 36 [2021-06-12 18:46:15,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:46:15,184 INFO L225 Difference]: With dead ends: 960 [2021-06-12 18:46:15,184 INFO L226 Difference]: Without dead ends: 395 [2021-06-12 18:46:15,184 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 107.3ms TimeCoverageRelationStatistics Valid=190, Invalid=362, Unknown=0, NotChecked=0, Total=552 [2021-06-12 18:46:15,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2021-06-12 18:46:15,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 274. [2021-06-12 18:46:15,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 273 states have (on average 1.9267399267399268) internal successors, (526), 273 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:46:15,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 526 transitions. [2021-06-12 18:46:15,189 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 526 transitions. Word has length 36 [2021-06-12 18:46:15,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:46:15,189 INFO L482 AbstractCegarLoop]: Abstraction has 274 states and 526 transitions. [2021-06-12 18:46:15,189 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:46:15,189 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 526 transitions. [2021-06-12 18:46:15,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-12 18:46:15,190 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:46:15,190 INFO L472 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:46:15,409 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 18:46:15,410 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:46:15,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:46:15,410 INFO L82 PathProgramCache]: Analyzing trace with hash 1057648055, now seen corresponding path program 11 times [2021-06-12 18:46:15,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:46:15,410 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228168403] [2021-06-12 18:46:15,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:46:15,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:46:15,491 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:46:15,491 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:46:15,491 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228168403] [2021-06-12 18:46:15,491 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228168403] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 18:46:15,491 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746509390] [2021-06-12 18:46:15,491 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 18:46:15,521 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-12 18:46:15,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 18:46:15,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-12 18:46:15,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 18:46:15,578 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:46:15,578 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [746509390] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 18:46:15,578 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 18:46:15,578 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2021-06-12 18:46:15,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433042541] [2021-06-12 18:46:15,579 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-12 18:46:15,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:46:15,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-12 18:46:15,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-06-12 18:46:15,580 INFO L87 Difference]: Start difference. First operand 274 states and 526 transitions. Second operand has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:46:15,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:46:15,748 INFO L93 Difference]: Finished difference Result 896 states and 1759 transitions. [2021-06-12 18:46:15,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-12 18:46:15,749 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 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 36 [2021-06-12 18:46:15,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:46:15,750 INFO L225 Difference]: With dead ends: 896 [2021-06-12 18:46:15,750 INFO L226 Difference]: Without dead ends: 413 [2021-06-12 18:46:15,750 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 128.8ms TimeCoverageRelationStatistics Valid=209, Invalid=391, Unknown=0, NotChecked=0, Total=600 [2021-06-12 18:46:15,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2021-06-12 18:46:15,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 256. [2021-06-12 18:46:15,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 255 states have (on average 1.8823529411764706) internal successors, (480), 255 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:46:15,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 480 transitions. [2021-06-12 18:46:15,755 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 480 transitions. Word has length 36 [2021-06-12 18:46:15,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:46:15,755 INFO L482 AbstractCegarLoop]: Abstraction has 256 states and 480 transitions. [2021-06-12 18:46:15,755 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:46:15,755 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 480 transitions. [2021-06-12 18:46:15,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-12 18:46:15,756 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:46:15,756 INFO L472 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:46:15,972 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-06-12 18:46:15,972 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:46:15,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:46:15,973 INFO L82 PathProgramCache]: Analyzing trace with hash -1917725171, now seen corresponding path program 12 times [2021-06-12 18:46:15,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:46:15,973 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951430913] [2021-06-12 18:46:15,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:46:15,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:46:16,093 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:46:16,093 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:46:16,093 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951430913] [2021-06-12 18:46:16,093 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951430913] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 18:46:16,093 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468675412] [2021-06-12 18:46:16,094 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 18:46:16,140 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-12 18:46:16,140 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 18:46:16,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 10 conjunts are in the unsatisfiable core [2021-06-12 18:46:16,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 18:46:16,199 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:46:16,199 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1468675412] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 18:46:16,199 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 18:46:16,199 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-06-12 18:46:16,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978528577] [2021-06-12 18:46:16,200 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-12 18:46:16,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:46:16,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-12 18:46:16,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-06-12 18:46:16,200 INFO L87 Difference]: Start difference. First operand 256 states and 480 transitions. Second operand has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:46:16,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:46:16,300 INFO L93 Difference]: Finished difference Result 413 states and 770 transitions. [2021-06-12 18:46:16,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-12 18:46:16,301 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 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 36 [2021-06-12 18:46:16,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:46:16,301 INFO L225 Difference]: With dead ends: 413 [2021-06-12 18:46:16,301 INFO L226 Difference]: Without dead ends: 0 [2021-06-12 18:46:16,301 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 112.0ms TimeCoverageRelationStatistics Valid=136, Invalid=244, Unknown=0, NotChecked=0, Total=380 [2021-06-12 18:46:16,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-12 18:46:16,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-12 18:46:16,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:46:16,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-12 18:46:16,302 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2021-06-12 18:46:16,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:46:16,302 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-12 18:46:16,302 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:46:16,302 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-12 18:46:16,302 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-12 18:46:16,519 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-06-12 18:46:16,521 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-12 18:46:16,523 INFO L202 PluginConnector]: Adding new model NonAtomicIncrement_2Threads_Loop.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.06 06:46:16 BasicIcfg [2021-06-12 18:46:16,523 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-12 18:46:16,523 INFO L168 Benchmark]: Toolchain (without parser) took 7125.81 ms. Allocated memory was 188.7 MB in the beginning and 228.6 MB in the end (delta: 39.8 MB). Free memory was 168.3 MB in the beginning and 155.9 MB in the end (delta: 12.5 MB). Peak memory consumption was 52.9 MB. Max. memory is 8.0 GB. [2021-06-12 18:46:16,523 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.08 ms. Allocated memory is still 188.7 MB. Free memory is still 169.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-12 18:46:16,523 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.21 ms. Allocated memory is still 188.7 MB. Free memory was 168.3 MB in the beginning and 166.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-12 18:46:16,523 INFO L168 Benchmark]: Boogie Preprocessor took 10.82 ms. Allocated memory is still 188.7 MB. Free memory was 166.8 MB in the beginning and 166.0 MB in the end (delta: 849.2 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-12 18:46:16,524 INFO L168 Benchmark]: RCFGBuilder took 185.32 ms. Allocated memory is still 188.7 MB. Free memory was 165.8 MB in the beginning and 155.9 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-06-12 18:46:16,524 INFO L168 Benchmark]: TraceAbstraction took 6908.99 ms. Allocated memory was 188.7 MB in the beginning and 228.6 MB in the end (delta: 39.8 MB). Free memory was 155.6 MB in the beginning and 155.9 MB in the end (delta: -285.3 kB). Peak memory consumption was 40.3 MB. Max. memory is 8.0 GB. [2021-06-12 18:46:16,524 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 0.08 ms. Allocated memory is still 188.7 MB. Free memory is still 169.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 17.21 ms. Allocated memory is still 188.7 MB. Free memory was 168.3 MB in the beginning and 166.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 10.82 ms. Allocated memory is still 188.7 MB. Free memory was 166.8 MB in the beginning and 166.0 MB in the end (delta: 849.2 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 185.32 ms. Allocated memory is still 188.7 MB. Free memory was 165.8 MB in the beginning and 155.9 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 6908.99 ms. Allocated memory was 188.7 MB in the beginning and 228.6 MB in the end (delta: 39.8 MB). Free memory was 155.6 MB in the beginning and 155.9 MB in the end (delta: -285.3 kB). Peak memory consumption was 40.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 22]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 5 procedures, 39 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6839.8ms, OverallIterations: 14, TraceHistogramMax: 3, EmptinessCheckTime: 27.6ms, AutomataDifference: 1819.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 17.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 842 SDtfs, 2389 SDslu, 2161 SDs, 0 SdLazy, 1107 SolverSat, 290 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 592.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 591 GetRequests, 379 SyntacticMatches, 0 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 1267.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=550occurred in iteration=8, InterpolantAutomatonStates: 169, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 141.8ms AutomataMinimizationTime, 14 MinimizatonAttempts, 1854 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 72.9ms SsaConstructionTime, 204.5ms SatisfiabilityAnalysisTime, 1582.6ms InterpolantComputationTime, 800 NumberOfCodeBlocks, 800 NumberOfCodeBlocksAsserted, 48 NumberOfCheckSat, 774 ConstructedInterpolants, 0 QuantifiedInterpolants, 2064 SizeOfPredicates, 72 NumberOfNonLiveVariables, 658 ConjunctsInSsa, 100 ConjunctsInUnsatCore, 26 InterpolantComputations, 3 PerfectInterpolantSequences, 467/554 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! Received shutdown request...