/usr/bin/java -Xmx16000000000 -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-Separate.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/NonAtomicIncrement_2Threads_Loop.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-770125f [2021-05-22 01:25:03,264 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-22 01:25:03,265 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-22 01:25:03,293 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-22 01:25:03,311 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-22 01:25:03,312 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-22 01:25:03,313 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-22 01:25:03,314 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-22 01:25:03,316 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-22 01:25:03,317 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-22 01:25:03,319 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-22 01:25:03,323 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-22 01:25:03,324 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-22 01:25:03,325 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-22 01:25:03,325 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-22 01:25:03,327 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-22 01:25:03,330 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-22 01:25:03,339 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-Separate.epf [2021-05-22 01:25:03,359 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-22 01:25:03,359 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-22 01:25:03,360 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-05-22 01:25:03,360 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-05-22 01:25:03,362 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-22 01:25:03,362 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-22 01:25:03,362 INFO L138 SettingsManager]: * Use SBE=true [2021-05-22 01:25:03,362 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-22 01:25:03,362 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-22 01:25:03,362 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-22 01:25:03,363 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-22 01:25:03,363 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-22 01:25:03,363 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-22 01:25:03,363 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-22 01:25:03,363 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-22 01:25:03,363 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-22 01:25:03,363 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-22 01:25:03,363 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-22 01:25:03,363 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-22 01:25:03,363 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-22 01:25:03,363 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-22 01:25:03,364 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-22 01:25:03,364 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-22 01:25:03,364 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-22 01:25:03,364 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-22 01:25:03,364 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-22 01:25:03,364 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-22 01:25:03,364 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-22 01:25:03,364 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-22 01:25:03,364 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-05-22 01:25:03,364 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-22 01:25:03,364 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2021-05-22 01:25:03,365 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-22 01:25:03,579 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-22 01:25:03,594 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-22 01:25:03,595 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-22 01:25:03,596 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-05-22 01:25:03,598 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-05-22 01:25:03,598 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/NonAtomicIncrement_2Threads_Loop.bpl [2021-05-22 01:25:03,598 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/NonAtomicIncrement_2Threads_Loop.bpl' [2021-05-22 01:25:03,633 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-22 01:25:03,634 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-22 01:25:03,635 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-05-22 01:25:03,635 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-05-22 01:25:03,636 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-05-22 01:25:03,644 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 22.05 01:25:03" (1/1) ... [2021-05-22 01:25:03,650 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 22.05 01:25:03" (1/1) ... [2021-05-22 01:25:03,656 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-05-22 01:25:03,657 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-22 01:25:03,658 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-22 01:25:03,658 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-22 01:25:03,663 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "NonAtomicIncrement_2Threads_Loop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.05 01:25:03" (1/1) ... [2021-05-22 01:25:03,664 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "NonAtomicIncrement_2Threads_Loop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.05 01:25:03" (1/1) ... [2021-05-22 01:25:03,664 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "NonAtomicIncrement_2Threads_Loop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.05 01:25:03" (1/1) ... [2021-05-22 01:25:03,665 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "NonAtomicIncrement_2Threads_Loop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.05 01:25:03" (1/1) ... [2021-05-22 01:25:03,667 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "NonAtomicIncrement_2Threads_Loop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.05 01:25:03" (1/1) ... [2021-05-22 01:25:03,670 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "NonAtomicIncrement_2Threads_Loop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.05 01:25:03" (1/1) ... [2021-05-22 01:25:03,671 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "NonAtomicIncrement_2Threads_Loop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.05 01:25:03" (1/1) ... [2021-05-22 01:25:03,671 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-22 01:25:03,672 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-22 01:25:03,673 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-22 01:25:03,674 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-22 01:25:03,675 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "NonAtomicIncrement_2Threads_Loop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.05 01:25:03" (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 [2021-05-22 01:25:03,745 INFO L130 BoogieDeclarations]: Found specification of procedure fistIncrementProcess [2021-05-22 01:25:03,745 INFO L138 BoogieDeclarations]: Found implementation of procedure fistIncrementProcess [2021-05-22 01:25:03,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-22 01:25:03,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-22 01:25:03,745 INFO L130 BoogieDeclarations]: Found specification of procedure secondIncrementProcess [2021-05-22 01:25:03,745 INFO L138 BoogieDeclarations]: Found implementation of procedure secondIncrementProcess [2021-05-22 01:25:03,746 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-05-22 01:25:03,884 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-22 01:25:03,884 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-05-22 01:25:03,886 INFO L202 PluginConnector]: Adding new model NonAtomicIncrement_2Threads_Loop.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.05 01:25:03 BoogieIcfgContainer [2021-05-22 01:25:03,886 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-22 01:25:03,887 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-22 01:25:03,887 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-22 01:25:03,889 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-22 01:25:03,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "NonAtomicIncrement_2Threads_Loop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.05 01:25:03" (1/2) ... [2021-05-22 01:25:03,891 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ba17046 and model type NonAtomicIncrement_2Threads_Loop.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.05 01:25:03, skipping insertion in model container [2021-05-22 01:25:03,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "NonAtomicIncrement_2Threads_Loop.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.05 01:25:03" (2/2) ... [2021-05-22 01:25:03,892 INFO L111 eAbstractionObserver]: Analyzing ICFG NonAtomicIncrement_2Threads_Loop.bpl [2021-05-22 01:25:03,899 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-05-22 01:25:03,900 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-22 01:25:03,900 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-05-22 01:25:03,901 INFO L478 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-05-22 01:25:03,923 WARN L313 ript$VariableManager]: TermVariabe fistIncrementProcessThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:25:03,924 WARN L313 ript$VariableManager]: TermVariabe fistIncrementProcessThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:25:03,924 WARN L313 ript$VariableManager]: TermVariabe fistIncrementProcessThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:25:03,924 WARN L313 ript$VariableManager]: TermVariabe fistIncrementProcessThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:25:03,924 WARN L313 ript$VariableManager]: TermVariabe fistIncrementProcessThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:25:03,924 WARN L313 ript$VariableManager]: TermVariabe fistIncrementProcessThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:25:03,924 WARN L313 ript$VariableManager]: TermVariabe fistIncrementProcessThread1of1ForFork0_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:25:03,925 WARN L313 ript$VariableManager]: TermVariabe fistIncrementProcessThread1of1ForFork0_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:25:03,925 WARN L313 ript$VariableManager]: TermVariabe fistIncrementProcessThread1of1ForFork0_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:25:03,925 WARN L313 ript$VariableManager]: TermVariabe fistIncrementProcessThread1of1ForFork0_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:25:03,925 WARN L313 ript$VariableManager]: TermVariabe fistIncrementProcessThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:25:03,925 WARN L313 ript$VariableManager]: TermVariabe fistIncrementProcessThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:25:03,925 WARN L313 ript$VariableManager]: TermVariabe fistIncrementProcessThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:25:03,925 WARN L313 ript$VariableManager]: TermVariabe fistIncrementProcessThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:25:03,926 WARN L313 ript$VariableManager]: TermVariabe secondIncrementProcessThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:25:03,926 WARN L313 ript$VariableManager]: TermVariabe secondIncrementProcessThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:25:03,926 WARN L313 ript$VariableManager]: TermVariabe secondIncrementProcessThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:25:03,926 WARN L313 ript$VariableManager]: TermVariabe secondIncrementProcessThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:25:03,926 WARN L313 ript$VariableManager]: TermVariabe secondIncrementProcessThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:25:03,926 WARN L313 ript$VariableManager]: TermVariabe secondIncrementProcessThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:25:03,926 WARN L313 ript$VariableManager]: TermVariabe secondIncrementProcessThread1of1ForFork1_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:25:03,927 WARN L313 ript$VariableManager]: TermVariabe secondIncrementProcessThread1of1ForFork1_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:25:03,927 WARN L313 ript$VariableManager]: TermVariabe secondIncrementProcessThread1of1ForFork1_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:25:03,927 WARN L313 ript$VariableManager]: TermVariabe secondIncrementProcessThread1of1ForFork1_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:25:03,927 WARN L313 ript$VariableManager]: TermVariabe secondIncrementProcessThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:25:03,927 WARN L313 ript$VariableManager]: TermVariabe secondIncrementProcessThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:25:03,927 WARN L313 ript$VariableManager]: TermVariabe secondIncrementProcessThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:25:03,927 WARN L313 ript$VariableManager]: TermVariabe secondIncrementProcessThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:25:03,929 WARN L313 ript$VariableManager]: TermVariabe fistIncrementProcessThread1of1ForFork0_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:25:03,929 WARN L313 ript$VariableManager]: TermVariabe fistIncrementProcessThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:25:03,932 WARN L313 ript$VariableManager]: TermVariabe secondIncrementProcessThread1of1ForFork1_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:25:03,932 WARN L313 ript$VariableManager]: TermVariabe secondIncrementProcessThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:25:03,936 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-05-22 01:25:03,951 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-22 01:25:03,964 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-05-22 01:25:03,965 INFO L379 AbstractCegarLoop]: Hoare is false [2021-05-22 01:25:03,965 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-22 01:25:03,965 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-22 01:25:03,965 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-22 01:25:03,965 INFO L383 AbstractCegarLoop]: Difference is false [2021-05-22 01:25:03,965 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-22 01:25:03,965 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-22 01:25:03,971 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 29 places, 26 transitions, 74 flow [2021-05-22 01:25:03,991 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) [2021-05-22 01:25:03,993 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) [2021-05-22 01:25:03,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-22 01:25:03,998 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:25:03,998 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:25:03,999 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:25:04,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:25:04,002 INFO L82 PathProgramCache]: Analyzing trace with hash -1220513213, now seen corresponding path program 1 times [2021-05-22 01:25:04,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:25:04,008 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858688887] [2021-05-22 01:25:04,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:25:04,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:25:04,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:25:04,089 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:25:04,090 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858688887] [2021-05-22 01:25:04,090 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858688887] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:25:04,090 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:25:04,090 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-22 01:25:04,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140463749] [2021-05-22 01:25:04,093 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-22 01:25:04,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:25:04,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-22 01:25:04,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-22 01:25:04,104 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) [2021-05-22 01:25:04,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:25:04,123 INFO L93 Difference]: Finished difference Result 112 states and 219 transitions. [2021-05-22 01:25:04,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-22 01:25:04,124 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 [2021-05-22 01:25:04,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:25:04,131 INFO L225 Difference]: With dead ends: 112 [2021-05-22 01:25:04,131 INFO L226 Difference]: Without dead ends: 110 [2021-05-22 01:25:04,132 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-22 01:25:04,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-05-22 01:25:04,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 83. [2021-05-22 01:25:04,157 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) [2021-05-22 01:25:04,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 163 transitions. [2021-05-22 01:25:04,159 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 163 transitions. Word has length 12 [2021-05-22 01:25:04,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:25:04,160 INFO L482 AbstractCegarLoop]: Abstraction has 83 states and 163 transitions. [2021-05-22 01:25:04,160 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) [2021-05-22 01:25:04,160 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 163 transitions. [2021-05-22 01:25:04,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-05-22 01:25:04,161 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:25:04,161 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:25:04,161 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-22 01:25:04,161 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:25:04,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:25:04,162 INFO L82 PathProgramCache]: Analyzing trace with hash 494030054, now seen corresponding path program 1 times [2021-05-22 01:25:04,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:25:04,162 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622799740] [2021-05-22 01:25:04,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:25:04,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:25:04,186 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:25:04,186 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:25:04,186 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622799740] [2021-05-22 01:25:04,186 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622799740] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 01:25:04,186 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585124874] [2021-05-22 01:25:04,186 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 [2021-05-22 01:25:04,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:25:04,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjunts are in the unsatisfiable core [2021-05-22 01:25:04,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 01:25:04,293 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-22 01:25:04,293 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585124874] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:25:04,294 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-05-22 01:25:04,294 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-05-22 01:25:04,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597484766] [2021-05-22 01:25:04,295 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-22 01:25:04,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:25:04,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-22 01:25:04,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-05-22 01:25:04,296 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) [2021-05-22 01:25:04,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:25:04,315 INFO L93 Difference]: Finished difference Result 119 states and 235 transitions. [2021-05-22 01:25:04,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-22 01:25:04,316 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 [2021-05-22 01:25:04,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:25:04,317 INFO L225 Difference]: With dead ends: 119 [2021-05-22 01:25:04,317 INFO L226 Difference]: Without dead ends: 119 [2021-05-22 01:25:04,318 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 10.1ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-05-22 01:25:04,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-05-22 01:25:04,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 92. [2021-05-22 01:25:04,326 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) [2021-05-22 01:25:04,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 181 transitions. [2021-05-22 01:25:04,327 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 181 transitions. Word has length 16 [2021-05-22 01:25:04,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:25:04,327 INFO L482 AbstractCegarLoop]: Abstraction has 92 states and 181 transitions. [2021-05-22 01:25:04,327 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) [2021-05-22 01:25:04,328 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 181 transitions. [2021-05-22 01:25:04,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-05-22 01:25:04,328 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:25:04,328 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:25:04,545 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-05-22 01:25:04,546 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:25:04,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:25:04,546 INFO L82 PathProgramCache]: Analyzing trace with hash -1490798487, now seen corresponding path program 1 times [2021-05-22 01:25:04,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:25:04,547 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278665798] [2021-05-22 01:25:04,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:25:04,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:25:04,582 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-22 01:25:04,583 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:25:04,583 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278665798] [2021-05-22 01:25:04,584 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278665798] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 01:25:04,584 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353887384] [2021-05-22 01:25:04,584 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 [2021-05-22 01:25:04,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:25:04,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 3 conjunts are in the unsatisfiable core [2021-05-22 01:25:04,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 01:25:04,700 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-22 01:25:04,700 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [353887384] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 01:25:04,700 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 01:25:04,700 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-05-22 01:25:04,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448893250] [2021-05-22 01:25:04,701 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-22 01:25:04,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:25:04,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-22 01:25:04,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-05-22 01:25:04,702 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) [2021-05-22 01:25:04,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:25:04,727 INFO L93 Difference]: Finished difference Result 162 states and 321 transitions. [2021-05-22 01:25:04,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-22 01:25:04,728 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 [2021-05-22 01:25:04,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:25:04,729 INFO L225 Difference]: With dead ends: 162 [2021-05-22 01:25:04,729 INFO L226 Difference]: Without dead ends: 162 [2021-05-22 01:25:04,729 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-05-22 01:25:04,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-05-22 01:25:04,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 132. [2021-05-22 01:25:04,738 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) [2021-05-22 01:25:04,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 261 transitions. [2021-05-22 01:25:04,740 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 261 transitions. Word has length 20 [2021-05-22 01:25:04,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:25:04,740 INFO L482 AbstractCegarLoop]: Abstraction has 132 states and 261 transitions. [2021-05-22 01:25:04,740 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) [2021-05-22 01:25:04,741 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 261 transitions. [2021-05-22 01:25:04,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-05-22 01:25:04,741 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:25:04,742 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:25:04,957 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 01:25:04,957 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:25:04,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:25:04,958 INFO L82 PathProgramCache]: Analyzing trace with hash -336674260, now seen corresponding path program 2 times [2021-05-22 01:25:04,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:25:04,958 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859856232] [2021-05-22 01:25:04,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:25:04,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:25:04,986 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-22 01:25:04,986 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:25:04,986 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859856232] [2021-05-22 01:25:04,986 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859856232] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 01:25:04,986 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294263920] [2021-05-22 01:25:04,987 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 [2021-05-22 01:25:05,015 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-22 01:25:05,015 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-22 01:25:05,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 4 conjunts are in the unsatisfiable core [2021-05-22 01:25:05,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 01:25:05,070 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-22 01:25:05,071 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [294263920] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 01:25:05,071 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 01:25:05,071 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 7 [2021-05-22 01:25:05,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268798940] [2021-05-22 01:25:05,071 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-22 01:25:05,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:25:05,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-22 01:25:05,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-05-22 01:25:05,072 INFO L87 Difference]: Start difference. First operand 132 states and 261 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:25:05,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:25:05,165 INFO L93 Difference]: Finished difference Result 291 states and 579 transitions. [2021-05-22 01:25:05,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-22 01:25:05,165 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-05-22 01:25:05,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:25:05,167 INFO L225 Difference]: With dead ends: 291 [2021-05-22 01:25:05,167 INFO L226 Difference]: Without dead ends: 291 [2021-05-22 01:25:05,167 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 51.1ms TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2021-05-22 01:25:05,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2021-05-22 01:25:05,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 240. [2021-05-22 01:25:05,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 239 states have (on average 1.99581589958159) internal successors, (477), 239 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:25:05,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 477 transitions. [2021-05-22 01:25:05,181 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 477 transitions. Word has length 24 [2021-05-22 01:25:05,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:25:05,181 INFO L482 AbstractCegarLoop]: Abstraction has 240 states and 477 transitions. [2021-05-22 01:25:05,181 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:25:05,182 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 477 transitions. [2021-05-22 01:25:05,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-05-22 01:25:05,183 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:25:05,183 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:25:05,386 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 01:25:05,386 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:25:05,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:25:05,386 INFO L82 PathProgramCache]: Analyzing trace with hash -1232424590, now seen corresponding path program 3 times [2021-05-22 01:25:05,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:25:05,387 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389016863] [2021-05-22 01:25:05,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:25:05,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:25:05,521 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-05-22 01:25:05,522 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:25:05,522 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389016863] [2021-05-22 01:25:05,522 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389016863] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 01:25:05,522 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022366011] [2021-05-22 01:25:05,522 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 [2021-05-22 01:25:05,560 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-05-22 01:25:05,560 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-22 01:25:05,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 4 conjunts are in the unsatisfiable core [2021-05-22 01:25:05,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 01:25:05,665 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-05-22 01:25:05,665 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2022366011] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 01:25:05,665 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 01:25:05,665 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-05-22 01:25:05,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774332138] [2021-05-22 01:25:05,666 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-22 01:25:05,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:25:05,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-22 01:25:05,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-05-22 01:25:05,666 INFO L87 Difference]: Start difference. First operand 240 states and 477 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:25:05,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:25:05,681 INFO L93 Difference]: Finished difference Result 308 states and 613 transitions. [2021-05-22 01:25:05,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-22 01:25:05,682 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 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 32 [2021-05-22 01:25:05,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:25:05,684 INFO L225 Difference]: With dead ends: 308 [2021-05-22 01:25:05,685 INFO L226 Difference]: Without dead ends: 308 [2021-05-22 01:25:05,685 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.9ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-05-22 01:25:05,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2021-05-22 01:25:05,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 308. [2021-05-22 01:25:05,694 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) [2021-05-22 01:25:05,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 613 transitions. [2021-05-22 01:25:05,695 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 613 transitions. Word has length 32 [2021-05-22 01:25:05,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:25:05,696 INFO L482 AbstractCegarLoop]: Abstraction has 308 states and 613 transitions. [2021-05-22 01:25:05,696 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:25:05,696 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 613 transitions. [2021-05-22 01:25:05,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-05-22 01:25:05,697 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:25:05,697 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:25:05,913 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 01:25:05,914 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:25:05,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:25:05,914 INFO L82 PathProgramCache]: Analyzing trace with hash 2099214069, now seen corresponding path program 4 times [2021-05-22 01:25:05,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:25:05,914 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82437282] [2021-05-22 01:25:05,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:25:05,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:25:06,050 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:25:06,050 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:25:06,050 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82437282] [2021-05-22 01:25:06,050 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82437282] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:25:06,050 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:25:06,050 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-05-22 01:25:06,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590817688] [2021-05-22 01:25:06,051 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-05-22 01:25:06,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:25:06,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-05-22 01:25:06,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2021-05-22 01:25:06,053 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) [2021-05-22 01:25:06,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:25:06,308 INFO L93 Difference]: Finished difference Result 1129 states and 2254 transitions. [2021-05-22 01:25:06,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-05-22 01:25:06,309 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 [2021-05-22 01:25:06,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:25:06,311 INFO L225 Difference]: With dead ends: 1129 [2021-05-22 01:25:06,311 INFO L226 Difference]: Without dead ends: 572 [2021-05-22 01:25:06,311 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 203.1ms TimeCoverageRelationStatistics Valid=278, Invalid=534, Unknown=0, NotChecked=0, Total=812 [2021-05-22 01:25:06,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2021-05-22 01:25:06,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 365. [2021-05-22 01:25:06,332 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) [2021-05-22 01:25:06,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 719 transitions. [2021-05-22 01:25:06,336 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 719 transitions. Word has length 36 [2021-05-22 01:25:06,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:25:06,336 INFO L482 AbstractCegarLoop]: Abstraction has 365 states and 719 transitions. [2021-05-22 01:25:06,336 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) [2021-05-22 01:25:06,336 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 719 transitions. [2021-05-22 01:25:06,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-05-22 01:25:06,343 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:25:06,343 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:25:06,343 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-05-22 01:25:06,343 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:25:06,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:25:06,344 INFO L82 PathProgramCache]: Analyzing trace with hash 1439417367, now seen corresponding path program 5 times [2021-05-22 01:25:06,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:25:06,345 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024845202] [2021-05-22 01:25:06,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:25:06,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:25:06,458 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:25:06,458 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:25:06,458 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024845202] [2021-05-22 01:25:06,459 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024845202] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 01:25:06,459 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353617329] [2021-05-22 01:25:06,459 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 [2021-05-22 01:25:06,484 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-05-22 01:25:06,484 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-22 01:25:06,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 12 conjunts are in the unsatisfiable core [2021-05-22 01:25:06,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 01:25:06,572 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:25:06,572 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [353617329] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 01:25:06,572 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 01:25:06,572 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2021-05-22 01:25:06,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409062517] [2021-05-22 01:25:06,572 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-05-22 01:25:06,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:25:06,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-05-22 01:25:06,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-05-22 01:25:06,573 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) [2021-05-22 01:25:06,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:25:06,779 INFO L93 Difference]: Finished difference Result 1051 states and 2075 transitions. [2021-05-22 01:25:06,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-05-22 01:25:06,780 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 [2021-05-22 01:25:06,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:25:06,781 INFO L225 Difference]: With dead ends: 1051 [2021-05-22 01:25:06,782 INFO L226 Difference]: Without dead ends: 491 [2021-05-22 01:25:06,782 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 146.3ms TimeCoverageRelationStatistics Valid=208, Invalid=392, Unknown=0, NotChecked=0, Total=600 [2021-05-22 01:25:06,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2021-05-22 01:25:06,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 331. [2021-05-22 01:25:06,788 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) [2021-05-22 01:25:06,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 645 transitions. [2021-05-22 01:25:06,789 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 645 transitions. Word has length 36 [2021-05-22 01:25:06,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:25:06,789 INFO L482 AbstractCegarLoop]: Abstraction has 331 states and 645 transitions. [2021-05-22 01:25:06,789 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) [2021-05-22 01:25:06,790 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 645 transitions. [2021-05-22 01:25:06,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-05-22 01:25:06,790 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:25:06,790 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:25:07,005 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-05-22 01:25:07,006 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:25:07,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:25:07,008 INFO L82 PathProgramCache]: Analyzing trace with hash -1486001743, now seen corresponding path program 6 times [2021-05-22 01:25:07,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:25:07,008 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299932304] [2021-05-22 01:25:07,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:25:07,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:25:07,117 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:25:07,117 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:25:07,117 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299932304] [2021-05-22 01:25:07,118 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299932304] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 01:25:07,118 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [330630973] [2021-05-22 01:25:07,118 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 [2021-05-22 01:25:07,154 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-05-22 01:25:07,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-22 01:25:07,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 12 conjunts are in the unsatisfiable core [2021-05-22 01:25:07,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 01:25:07,244 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:25:07,244 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [330630973] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 01:25:07,244 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 01:25:07,247 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2021-05-22 01:25:07,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492687866] [2021-05-22 01:25:07,247 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-05-22 01:25:07,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:25:07,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-05-22 01:25:07,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-05-22 01:25:07,258 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) [2021-05-22 01:25:07,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:25:07,457 INFO L93 Difference]: Finished difference Result 1357 states and 2666 transitions. [2021-05-22 01:25:07,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-05-22 01:25:07,457 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 [2021-05-22 01:25:07,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:25:07,462 INFO L225 Difference]: With dead ends: 1357 [2021-05-22 01:25:07,462 INFO L226 Difference]: Without dead ends: 1011 [2021-05-22 01:25:07,462 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 147.3ms TimeCoverageRelationStatistics Valid=204, Invalid=396, Unknown=0, NotChecked=0, Total=600 [2021-05-22 01:25:07,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2021-05-22 01:25:07,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 550. [2021-05-22 01:25:07,473 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) [2021-05-22 01:25:07,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 1085 transitions. [2021-05-22 01:25:07,474 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 1085 transitions. Word has length 36 [2021-05-22 01:25:07,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:25:07,474 INFO L482 AbstractCegarLoop]: Abstraction has 550 states and 1085 transitions. [2021-05-22 01:25:07,474 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) [2021-05-22 01:25:07,474 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 1085 transitions. [2021-05-22 01:25:07,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-05-22 01:25:07,475 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:25:07,475 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:25:07,692 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 01:25:07,692 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:25:07,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:25:07,693 INFO L82 PathProgramCache]: Analyzing trace with hash 1592559793, now seen corresponding path program 7 times [2021-05-22 01:25:07,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:25:07,693 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913962359] [2021-05-22 01:25:07,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:25:07,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:25:07,745 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:25:07,746 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:25:07,746 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913962359] [2021-05-22 01:25:07,746 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913962359] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 01:25:07,746 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171408108] [2021-05-22 01:25:07,746 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) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 01:25:07,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:25:07,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 10 conjunts are in the unsatisfiable core [2021-05-22 01:25:07,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 01:25:07,859 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:25:07,859 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1171408108] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 01:25:07,859 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 01:25:07,860 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-05-22 01:25:07,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309804918] [2021-05-22 01:25:07,862 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-22 01:25:07,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:25:07,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-22 01:25:07,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-05-22 01:25:07,863 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) [2021-05-22 01:25:07,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:25:07,995 INFO L93 Difference]: Finished difference Result 976 states and 1894 transitions. [2021-05-22 01:25:07,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-22 01:25:07,996 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 [2021-05-22 01:25:07,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:25:07,998 INFO L225 Difference]: With dead ends: 976 [2021-05-22 01:25:07,998 INFO L226 Difference]: Without dead ends: 782 [2021-05-22 01:25:07,999 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 87.2ms TimeCoverageRelationStatistics Valid=133, Invalid=247, Unknown=0, NotChecked=0, Total=380 [2021-05-22 01:25:08,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 782 states. [2021-05-22 01:25:08,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 782 to 488. [2021-05-22 01:25:08,007 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) [2021-05-22 01:25:08,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 952 transitions. [2021-05-22 01:25:08,008 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 952 transitions. Word has length 36 [2021-05-22 01:25:08,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:25:08,008 INFO L482 AbstractCegarLoop]: Abstraction has 488 states and 952 transitions. [2021-05-22 01:25:08,008 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) [2021-05-22 01:25:08,008 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 952 transitions. [2021-05-22 01:25:08,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-05-22 01:25:08,010 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:25:08,010 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:25:08,225 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 01:25:08,225 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:25:08,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:25:08,225 INFO L82 PathProgramCache]: Analyzing trace with hash -205248591, now seen corresponding path program 8 times [2021-05-22 01:25:08,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:25:08,226 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992021172] [2021-05-22 01:25:08,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:25:08,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:25:08,270 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-22 01:25:08,271 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:25:08,271 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992021172] [2021-05-22 01:25:08,271 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992021172] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 01:25:08,271 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436813015] [2021-05-22 01:25:08,271 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) [2021-05-22 01:25:08,330 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-22 01:25:08,331 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-22 01:25:08,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 8 conjunts are in the unsatisfiable core Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 01:25:08,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 01:25:08,397 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-22 01:25:08,398 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436813015] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 01:25:08,398 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 01:25:08,398 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-05-22 01:25:08,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534587108] [2021-05-22 01:25:08,398 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:25:08,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:25:08,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:25:08,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:25:08,399 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) [2021-05-22 01:25:08,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:25:08,480 INFO L93 Difference]: Finished difference Result 728 states and 1403 transitions. [2021-05-22 01:25:08,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 01:25:08,480 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 [2021-05-22 01:25:08,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:25:08,484 INFO L225 Difference]: With dead ends: 728 [2021-05-22 01:25:08,484 INFO L226 Difference]: Without dead ends: 451 [2021-05-22 01:25:08,484 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 58.3ms TimeCoverageRelationStatistics Valid=76, Invalid=134, Unknown=0, NotChecked=0, Total=210 [2021-05-22 01:25:08,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2021-05-22 01:25:08,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 297. [2021-05-22 01:25:08,489 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) [2021-05-22 01:25:08,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 571 transitions. [2021-05-22 01:25:08,490 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 571 transitions. Word has length 36 [2021-05-22 01:25:08,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:25:08,490 INFO L482 AbstractCegarLoop]: Abstraction has 297 states and 571 transitions. [2021-05-22 01:25:08,490 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) [2021-05-22 01:25:08,490 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 571 transitions. [2021-05-22 01:25:08,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-05-22 01:25:08,491 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:25:08,491 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:25:08,704 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-05-22 01:25:08,705 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:25:08,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:25:08,705 INFO L82 PathProgramCache]: Analyzing trace with hash 1580118603, now seen corresponding path program 9 times [2021-05-22 01:25:08,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:25:08,705 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221950035] [2021-05-22 01:25:08,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:25:08,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:25:08,777 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:25:08,777 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:25:08,778 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221950035] [2021-05-22 01:25:08,778 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221950035] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 01:25:08,778 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491621019] [2021-05-22 01:25:08,780 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 [2021-05-22 01:25:08,802 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-05-22 01:25:08,802 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-22 01:25:08,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 12 conjunts are in the unsatisfiable core [2021-05-22 01:25:08,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 01:25:08,861 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:25:08,862 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491621019] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 01:25:08,862 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 01:25:08,862 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2021-05-22 01:25:08,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799635] [2021-05-22 01:25:08,862 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-05-22 01:25:08,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:25:08,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-05-22 01:25:08,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-05-22 01:25:08,863 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) [2021-05-22 01:25:09,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:25:09,018 INFO L93 Difference]: Finished difference Result 982 states and 1931 transitions. [2021-05-22 01:25:09,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-05-22 01:25:09,018 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 [2021-05-22 01:25:09,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:25:09,021 INFO L225 Difference]: With dead ends: 982 [2021-05-22 01:25:09,021 INFO L226 Difference]: Without dead ends: 495 [2021-05-22 01:25:09,021 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 124.0ms TimeCoverageRelationStatistics Valid=192, Invalid=360, Unknown=0, NotChecked=0, Total=552 [2021-05-22 01:25:09,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2021-05-22 01:25:09,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 318. [2021-05-22 01:25:09,026 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) [2021-05-22 01:25:09,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 614 transitions. [2021-05-22 01:25:09,026 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 614 transitions. Word has length 36 [2021-05-22 01:25:09,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:25:09,026 INFO L482 AbstractCegarLoop]: Abstraction has 318 states and 614 transitions. [2021-05-22 01:25:09,026 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) [2021-05-22 01:25:09,026 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 614 transitions. [2021-05-22 01:25:09,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-05-22 01:25:09,027 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:25:09,027 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:25:09,241 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 01:25:09,241 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:25:09,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:25:09,241 INFO L82 PathProgramCache]: Analyzing trace with hash -186879887, now seen corresponding path program 10 times [2021-05-22 01:25:09,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:25:09,242 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114017110] [2021-05-22 01:25:09,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:25:09,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:25:09,334 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:25:09,334 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:25:09,334 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114017110] [2021-05-22 01:25:09,334 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114017110] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 01:25:09,334 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190855134] [2021-05-22 01:25:09,334 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 [2021-05-22 01:25:09,358 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-22 01:25:09,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-22 01:25:09,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 12 conjunts are in the unsatisfiable core [2021-05-22 01:25:09,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 01:25:09,413 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:25:09,413 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190855134] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 01:25:09,413 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 01:25:09,413 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2021-05-22 01:25:09,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518449415] [2021-05-22 01:25:09,414 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-05-22 01:25:09,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:25:09,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-05-22 01:25:09,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-05-22 01:25:09,414 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) [2021-05-22 01:25:09,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:25:09,576 INFO L93 Difference]: Finished difference Result 960 states and 1883 transitions. [2021-05-22 01:25:09,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-05-22 01:25:09,577 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 [2021-05-22 01:25:09,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:25:09,578 INFO L225 Difference]: With dead ends: 960 [2021-05-22 01:25:09,578 INFO L226 Difference]: Without dead ends: 395 [2021-05-22 01:25:09,578 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 110.2ms TimeCoverageRelationStatistics Valid=190, Invalid=362, Unknown=0, NotChecked=0, Total=552 [2021-05-22 01:25:09,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2021-05-22 01:25:09,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 274. [2021-05-22 01:25:09,583 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) [2021-05-22 01:25:09,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 526 transitions. [2021-05-22 01:25:09,584 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 526 transitions. Word has length 36 [2021-05-22 01:25:09,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:25:09,584 INFO L482 AbstractCegarLoop]: Abstraction has 274 states and 526 transitions. [2021-05-22 01:25:09,584 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) [2021-05-22 01:25:09,584 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 526 transitions. [2021-05-22 01:25:09,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-05-22 01:25:09,585 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:25:09,585 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:25:09,801 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 01:25:09,801 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:25:09,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:25:09,801 INFO L82 PathProgramCache]: Analyzing trace with hash -460149865, now seen corresponding path program 11 times [2021-05-22 01:25:09,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:25:09,802 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487466688] [2021-05-22 01:25:09,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:25:09,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:25:09,876 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:25:09,877 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:25:09,877 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487466688] [2021-05-22 01:25:09,877 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487466688] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 01:25:09,877 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491005523] [2021-05-22 01:25:09,877 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) [2021-05-22 01:25:09,902 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-05-22 01:25:09,902 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-22 01:25:09,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 12 conjunts are in the unsatisfiable core [2021-05-22 01:25:09,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 01:25:09,961 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:25:09,962 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491005523] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 01:25:09,962 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 01:25:09,962 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2021-05-22 01:25:09,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980931006] [2021-05-22 01:25:09,962 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-05-22 01:25:09,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:25:09,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-05-22 01:25:09,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-05-22 01:25:09,963 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) [2021-05-22 01:25:10,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:25:10,112 INFO L93 Difference]: Finished difference Result 896 states and 1759 transitions. [2021-05-22 01:25:10,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-05-22 01:25:10,113 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 [2021-05-22 01:25:10,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:25:10,114 INFO L225 Difference]: With dead ends: 896 [2021-05-22 01:25:10,114 INFO L226 Difference]: Without dead ends: 413 [2021-05-22 01:25:10,114 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 135.5ms TimeCoverageRelationStatistics Valid=209, Invalid=391, Unknown=0, NotChecked=0, Total=600 [2021-05-22 01:25:10,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2021-05-22 01:25:10,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 256. [2021-05-22 01:25:10,118 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) [2021-05-22 01:25:10,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 480 transitions. [2021-05-22 01:25:10,119 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 480 transitions. Word has length 36 [2021-05-22 01:25:10,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:25:10,119 INFO L482 AbstractCegarLoop]: Abstraction has 256 states and 480 transitions. [2021-05-22 01:25:10,119 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) [2021-05-22 01:25:10,119 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 480 transitions. [2021-05-22 01:25:10,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-05-22 01:25:10,120 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:25:10,120 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:25:10,327 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-05-22 01:25:10,328 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:25:10,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:25:10,328 INFO L82 PathProgramCache]: Analyzing trace with hash 859444205, now seen corresponding path program 12 times [2021-05-22 01:25:10,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:25:10,328 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278851263] [2021-05-22 01:25:10,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:25:10,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:25:10,379 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:25:10,379 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:25:10,379 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278851263] [2021-05-22 01:25:10,379 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278851263] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 01:25:10,379 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191887574] [2021-05-22 01:25:10,379 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) [2021-05-22 01:25:10,407 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-05-22 01:25:10,407 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-22 01:25:10,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 10 conjunts are in the unsatisfiable core Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 01:25:10,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 01:25:10,461 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:25:10,461 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191887574] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 01:25:10,461 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 01:25:10,461 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-05-22 01:25:10,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102247811] [2021-05-22 01:25:10,462 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-22 01:25:10,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:25:10,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-22 01:25:10,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-05-22 01:25:10,462 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) [2021-05-22 01:25:10,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:25:10,565 INFO L93 Difference]: Finished difference Result 413 states and 770 transitions. [2021-05-22 01:25:10,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-22 01:25:10,566 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 [2021-05-22 01:25:10,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:25:10,566 INFO L225 Difference]: With dead ends: 413 [2021-05-22 01:25:10,566 INFO L226 Difference]: Without dead ends: 0 [2021-05-22 01:25:10,566 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 82.2ms TimeCoverageRelationStatistics Valid=136, Invalid=244, Unknown=0, NotChecked=0, Total=380 [2021-05-22 01:25:10,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-22 01:25:10,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-22 01:25:10,566 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) [2021-05-22 01:25:10,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-22 01:25:10,566 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2021-05-22 01:25:10,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:25:10,567 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-22 01:25:10,567 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) [2021-05-22 01:25:10,567 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-22 01:25:10,567 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-22 01:25:10,776 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-05-22 01:25:10,777 INFO L315 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE (1/2) [2021-05-22 01:25:10,778 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-05-22 01:25:10,779 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-05-22 01:25:10,779 INFO L379 AbstractCegarLoop]: Hoare is false [2021-05-22 01:25:10,779 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-22 01:25:10,779 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-22 01:25:10,779 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-22 01:25:10,779 INFO L383 AbstractCegarLoop]: Difference is false [2021-05-22 01:25:10,779 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-22 01:25:10,779 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == InUseError======== [2021-05-22 01:25:10,780 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 29 places, 26 transitions, 74 flow [2021-05-22 01:25:10,781 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) [2021-05-22 01:25:10,782 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) [2021-05-22 01:25:10,782 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-22 01:25:10,782 INFO L315 ceAbstractionStarter]: Result for error location InUseError was SAFE (2/2) [2021-05-22 01:25:10,782 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-05-22 01:25:10,784 INFO L202 PluginConnector]: Adding new model NonAtomicIncrement_2Threads_Loop.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.05 01:25:10 BasicIcfg [2021-05-22 01:25:10,784 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-22 01:25:10,784 INFO L168 Benchmark]: Toolchain (without parser) took 7150.21 ms. Allocated memory is still 381.7 MB. Free memory was 361.3 MB in the beginning and 324.0 MB in the end (delta: 37.4 MB). Peak memory consumption was 40.4 MB. Max. memory is 16.0 GB. [2021-05-22 01:25:10,784 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.09 ms. Allocated memory is still 381.7 MB. Free memory is still 362.4 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-05-22 01:25:10,784 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.06 ms. Allocated memory is still 381.7 MB. Free memory was 361.3 MB in the beginning and 359.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-05-22 01:25:10,784 INFO L168 Benchmark]: Boogie Preprocessor took 14.10 ms. Allocated memory is still 381.7 MB. Free memory was 359.8 MB in the beginning and 358.9 MB in the end (delta: 966.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-05-22 01:25:10,785 INFO L168 Benchmark]: RCFGBuilder took 213.39 ms. Allocated memory is still 381.7 MB. Free memory was 358.8 MB in the beginning and 348.8 MB in the end (delta: 10.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. [2021-05-22 01:25:10,785 INFO L168 Benchmark]: TraceAbstraction took 6896.88 ms. Allocated memory is still 381.7 MB. Free memory was 348.4 MB in the beginning and 324.0 MB in the end (delta: 24.4 MB). Peak memory consumption was 25.7 MB. Max. memory is 16.0 GB. [2021-05-22 01:25:10,785 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 0.09 ms. Allocated memory is still 381.7 MB. Free memory is still 362.4 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 21.06 ms. Allocated memory is still 381.7 MB. Free memory was 361.3 MB in the beginning and 359.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 14.10 ms. Allocated memory is still 381.7 MB. Free memory was 359.8 MB in the beginning and 358.9 MB in the end (delta: 966.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 213.39 ms. Allocated memory is still 381.7 MB. Free memory was 358.8 MB in the beginning and 348.8 MB in the end (delta: 10.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. * TraceAbstraction took 6896.88 ms. Allocated memory is still 381.7 MB. Free memory was 348.4 MB in the beginning and 324.0 MB in the end (delta: 24.4 MB). Peak memory consumption was 25.7 MB. Max. memory is 16.0 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 with 1 thread instances CFG has 5 procedures, 39 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6814.3ms, OverallIterations: 14, TraceHistogramMax: 3, EmptinessCheckTime: 23.1ms, AutomataDifference: 1688.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 26.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 842 SDtfs, 2082 SDslu, 2576 SDs, 0 SdLazy, 1286 SolverSat, 270 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 578.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 589 GetRequests, 380 SyntacticMatches, 0 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 1223.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=550occurred in iteration=8, InterpolantAutomatonStates: 166, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 135.9ms AutomataMinimizationTime, 14 MinimizatonAttempts, 1866 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 51.2ms SsaConstructionTime, 188.0ms SatisfiabilityAnalysisTime, 1726.7ms InterpolantComputationTime, 808 NumberOfCodeBlocks, 804 NumberOfCodeBlocksAsserted, 48 NumberOfCheckSat, 782 ConstructedInterpolants, 0 QuantifiedInterpolants, 2080 SizeOfPredicates, 72 NumberOfNonLiveVariables, 658 ConjunctsInSsa, 101 ConjunctsInUnsatCore, 26 InterpolantComputations, 3 PerfectInterpolantSequences, 480/572 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 - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 5 procedures, 39 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.9ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 0.3ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=76occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: 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...