/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-None-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/three-array-min.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9e34d99ae2c6837f487980c721c4b6acf9d9b15c-9e34d99 [2021-07-09 20:50:11,974 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-09 20:50:11,975 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-09 20:50:11,996 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-09 20:50:11,996 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-09 20:50:11,999 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-09 20:50:12,000 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-09 20:50:12,001 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-09 20:50:12,002 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-09 20:50:12,003 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-09 20:50:12,004 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-09 20:50:12,004 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-09 20:50:12,004 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-09 20:50:12,005 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-09 20:50:12,006 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-09 20:50:12,006 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-09 20:50:12,007 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-09 20:50:12,007 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-09 20:50:12,008 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-09 20:50:12,009 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-09 20:50:12,010 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-09 20:50:12,025 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-09 20:50:12,026 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-09 20:50:12,027 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-09 20:50:12,028 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-09 20:50:12,028 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-09 20:50:12,029 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-09 20:50:12,029 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-09 20:50:12,029 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-09 20:50:12,030 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-09 20:50:12,030 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-09 20:50:12,031 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-09 20:50:12,031 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-09 20:50:12,031 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-09 20:50:12,032 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-09 20:50:12,032 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-09 20:50:12,033 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-09 20:50:12,033 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-09 20:50:12,033 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-09 20:50:12,036 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-09 20:50:12,036 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-09 20:50:12,037 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-POR-None-NoLbe.epf [2021-07-09 20:50:12,052 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-09 20:50:12,052 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-09 20:50:12,053 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-09 20:50:12,053 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-09 20:50:12,053 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-09 20:50:12,053 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-09 20:50:12,054 INFO L138 SettingsManager]: * Use SBE=true [2021-07-09 20:50:12,054 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-09 20:50:12,054 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-09 20:50:12,054 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-09 20:50:12,054 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-09 20:50:12,054 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-09 20:50:12,054 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-09 20:50:12,054 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-09 20:50:12,054 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-09 20:50:12,055 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-09 20:50:12,055 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-09 20:50:12,055 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-09 20:50:12,055 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-09 20:50:12,055 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-09 20:50:12,055 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-09 20:50:12,055 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-09 20:50:12,055 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-09 20:50:12,055 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-09 20:50:12,055 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-09 20:50:12,056 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-09 20:50:12,056 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-09 20:50:12,056 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-09 20:50:12,056 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-09 20:50:12,056 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-09 20:50:12,056 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-07-09 20:50:12,056 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-09 20:50:12,056 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-09 20:50:12,296 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-09 20:50:12,314 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-09 20:50:12,316 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-09 20:50:12,317 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-09 20:50:12,318 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-09 20:50:12,318 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/three-array-min.wvr.bpl [2021-07-09 20:50:12,318 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/three-array-min.wvr.bpl' [2021-07-09 20:50:12,338 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-09 20:50:12,339 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-09 20:50:12,341 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-09 20:50:12,341 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-09 20:50:12,341 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-09 20:50:12,349 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "three-array-min.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 08:50:12" (1/1) ... [2021-07-09 20:50:12,355 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "three-array-min.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 08:50:12" (1/1) ... [2021-07-09 20:50:12,360 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-09 20:50:12,361 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-09 20:50:12,361 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-09 20:50:12,361 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-09 20:50:12,366 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "three-array-min.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 08:50:12" (1/1) ... [2021-07-09 20:50:12,367 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "three-array-min.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 08:50:12" (1/1) ... [2021-07-09 20:50:12,369 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "three-array-min.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 08:50:12" (1/1) ... [2021-07-09 20:50:12,369 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "three-array-min.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 08:50:12" (1/1) ... [2021-07-09 20:50:12,372 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "three-array-min.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 08:50:12" (1/1) ... [2021-07-09 20:50:12,376 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "three-array-min.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 08:50:12" (1/1) ... [2021-07-09 20:50:12,377 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "three-array-min.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 08:50:12" (1/1) ... [2021-07-09 20:50:12,378 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-09 20:50:12,378 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-09 20:50:12,379 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-09 20:50:12,379 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-09 20:50:12,379 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "three-array-min.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 08:50:12" (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 [2021-07-09 20:50:12,442 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-09 20:50:12,442 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-09 20:50:12,442 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-09 20:50:12,442 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-09 20:50:12,443 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-09 20:50:12,443 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-09 20:50:12,443 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-09 20:50:12,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-09 20:50:12,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-09 20:50:12,444 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-07-09 20:50:12,444 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-07-09 20:50:12,444 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-07-09 20:50:12,446 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-09 20:50:12,675 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-09 20:50:12,675 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-07-09 20:50:12,677 INFO L202 PluginConnector]: Adding new model three-array-min.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.07 08:50:12 BoogieIcfgContainer [2021-07-09 20:50:12,677 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-09 20:50:12,678 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-09 20:50:12,678 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-09 20:50:12,680 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-09 20:50:12,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "three-array-min.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 08:50:12" (1/2) ... [2021-07-09 20:50:12,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54225de2 and model type three-array-min.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.07 08:50:12, skipping insertion in model container [2021-07-09 20:50:12,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "three-array-min.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.07 08:50:12" (2/2) ... [2021-07-09 20:50:12,681 INFO L111 eAbstractionObserver]: Analyzing ICFG three-array-min.wvr.bpl [2021-07-09 20:50:12,685 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-09 20:50:12,685 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-09 20:50:12,685 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-09 20:50:12,685 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-09 20:50:12,707 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-07-09 20:50:12,733 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-07-09 20:50:12,773 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-09 20:50:12,773 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-09 20:50:12,773 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-09 20:50:12,773 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-09 20:50:12,773 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-09 20:50:12,774 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-09 20:50:12,774 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-09 20:50:12,774 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-09 20:50:12,780 INFO L110 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 32 transitions, 88 flow [2021-07-09 20:50:12,801 INFO L132 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 134 states, 133 states have (on average 2.9774436090225564) internal successors, (396), 133 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 20:50:12,808 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 20:50:12,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 20:50:12,816 INFO L82 PathProgramCache]: Analyzing trace with hash 553381804, now seen corresponding path program 1 times [2021-07-09 20:50:12,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 20:50:12,829 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206403727] [2021-07-09 20:50:12,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 20:50:12,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 20:50:12,965 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 20:50:12,965 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 20:50:12,965 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206403727] [2021-07-09 20:50:12,966 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206403727] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 20:50:12,966 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546619821] [2021-07-09 20:50:12,966 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 [2021-07-09 20:50:13,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 20:50:13,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjunts are in the unsatisfiable core [2021-07-09 20:50:13,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-09 20:50:13,144 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 20:50:13,145 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1546619821] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 20:50:13,145 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-09 20:50:13,145 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-07-09 20:50:13,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067786107] [2021-07-09 20:50:13,149 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-09 20:50:13,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 20:50:13,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-09 20:50:13,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-07-09 20:50:13,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-09 20:50:13,158 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-09 20:50:13,158 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 20:50:13,158 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-09 20:50:13,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-09 20:50:13,439 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-07-09 20:50:13,439 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 20:50:13,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 20:50:13,440 INFO L82 PathProgramCache]: Analyzing trace with hash -230133272, now seen corresponding path program 2 times [2021-07-09 20:50:13,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 20:50:13,441 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736637932] [2021-07-09 20:50:13,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 20:50:13,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 20:50:13,505 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-07-09 20:50:13,505 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 20:50:13,505 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736637932] [2021-07-09 20:50:13,506 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736637932] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 20:50:13,506 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008940380] [2021-07-09 20:50:13,506 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 [2021-07-09 20:50:13,553 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-09 20:50:13,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-09 20:50:13,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 5 conjunts are in the unsatisfiable core [2021-07-09 20:50:13,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-09 20:50:13,642 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-07-09 20:50:13,642 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2008940380] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 20:50:13,643 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-09 20:50:13,643 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-07-09 20:50:13,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373205174] [2021-07-09 20:50:13,643 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-09 20:50:13,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 20:50:13,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-09 20:50:13,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-07-09 20:50:13,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-09 20:50:13,644 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-09 20:50:13,644 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 20:50:13,645 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-09 20:50:13,645 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-09 20:50:13,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-09 20:50:13,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-09 20:50:13,917 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 20:50:13,917 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 20:50:13,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 20:50:13,917 INFO L82 PathProgramCache]: Analyzing trace with hash -1168220864, now seen corresponding path program 3 times [2021-07-09 20:50:13,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 20:50:13,918 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252216908] [2021-07-09 20:50:13,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 20:50:13,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 20:50:13,986 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-07-09 20:50:13,987 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 20:50:13,987 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252216908] [2021-07-09 20:50:13,987 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252216908] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 20:50:13,987 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883423054] [2021-07-09 20:50:13,987 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 [2021-07-09 20:50:14,027 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-07-09 20:50:14,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-09 20:50:14,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 6 conjunts are in the unsatisfiable core [2021-07-09 20:50:14,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-09 20:50:14,137 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-07-09 20:50:14,137 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883423054] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 20:50:14,138 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-09 20:50:14,139 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-07-09 20:50:14,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695710210] [2021-07-09 20:50:14,139 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-09 20:50:14,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 20:50:14,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-09 20:50:14,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-07-09 20:50:14,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-09 20:50:14,141 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-09 20:50:14,141 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 20:50:14,142 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-09 20:50:14,142 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-09 20:50:14,143 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-09 20:50:14,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-09 20:50:14,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-09 20:50:14,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-09 20:50:14,492 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 20:50:14,493 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 20:50:14,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 20:50:14,493 INFO L82 PathProgramCache]: Analyzing trace with hash -1093907301, now seen corresponding path program 1 times [2021-07-09 20:50:14,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 20:50:14,493 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845006685] [2021-07-09 20:50:14,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 20:50:14,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 20:50:14,550 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-07-09 20:50:14,551 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 20:50:14,551 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845006685] [2021-07-09 20:50:14,551 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845006685] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 20:50:14,551 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 20:50:14,551 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-09 20:50:14,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813866172] [2021-07-09 20:50:14,551 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-09 20:50:14,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 20:50:14,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-09 20:50:14,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 20:50:14,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-09 20:50:14,552 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-09 20:50:14,552 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 20:50:14,552 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-09 20:50:14,552 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-09 20:50:14,552 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-07-09 20:50:14,552 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-09 20:50:14,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-09 20:50:14,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-09 20:50:14,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-09 20:50:14,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-09 20:50:14,568 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-09 20:50:14,568 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 20:50:14,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 20:50:14,569 INFO L82 PathProgramCache]: Analyzing trace with hash -1194478556, now seen corresponding path program 4 times [2021-07-09 20:50:14,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 20:50:14,569 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569917504] [2021-07-09 20:50:14,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 20:50:14,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 20:50:14,644 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 19 proven. 12 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-07-09 20:50:14,645 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 20:50:14,645 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569917504] [2021-07-09 20:50:14,645 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569917504] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 20:50:14,645 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825604578] [2021-07-09 20:50:14,645 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 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 [2021-07-09 20:50:14,689 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-07-09 20:50:14,689 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-09 20:50:14,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2021-07-09 20:50:14,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-09 20:50:14,841 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-07-09 20:50:14,842 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1825604578] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 20:50:14,842 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-09 20:50:14,842 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-07-09 20:50:14,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892868688] [2021-07-09 20:50:14,842 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-07-09 20:50:14,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 20:50:14,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-07-09 20:50:14,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-07-09 20:50:14,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-09 20:50:14,843 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-09 20:50:14,843 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 13 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 20:50:14,843 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-09 20:50:14,844 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-09 20:50:14,844 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-07-09 20:50:14,844 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-09 20:50:14,844 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-09 20:50:15,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-09 20:50:15,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-09 20:50:15,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-09 20:50:15,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-09 20:50:15,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-07-09 20:50:15,353 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 20:50:15,353 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 20:50:15,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 20:50:15,353 INFO L82 PathProgramCache]: Analyzing trace with hash -1909262436, now seen corresponding path program 5 times [2021-07-09 20:50:15,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 20:50:15,353 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182842880] [2021-07-09 20:50:15,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 20:50:15,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 20:50:15,472 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 16 proven. 31 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-07-09 20:50:15,472 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 20:50:15,472 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182842880] [2021-07-09 20:50:15,472 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182842880] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 20:50:15,472 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897873627] [2021-07-09 20:50:15,472 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 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 [2021-07-09 20:50:15,523 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-07-09 20:50:15,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-09 20:50:15,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 11 conjunts are in the unsatisfiable core [2021-07-09 20:50:15,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-09 20:50:15,637 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 16 proven. 31 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-07-09 20:50:15,637 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897873627] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 20:50:15,637 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-09 20:50:15,637 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2021-07-09 20:50:15,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184797340] [2021-07-09 20:50:15,638 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-07-09 20:50:15,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 20:50:15,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-07-09 20:50:15,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-07-09 20:50:15,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-09 20:50:15,638 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-09 20:50:15,639 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 20:50:15,639 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-09 20:50:15,639 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-09 20:50:15,639 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-07-09 20:50:15,639 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-09 20:50:15,639 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2021-07-09 20:50:15,639 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-09 20:50:15,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-09 20:50:15,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-09 20:50:15,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-09 20:50:15,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-09 20:50:15,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-07-09 20:50:15,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-09 20:50:16,061 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 20:50:16,061 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 20:50:16,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 20:50:16,061 INFO L82 PathProgramCache]: Analyzing trace with hash 271245470, now seen corresponding path program 6 times [2021-07-09 20:50:16,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 20:50:16,063 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135977840] [2021-07-09 20:50:16,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 20:50:16,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 20:50:16,196 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 64 proven. 31 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-07-09 20:50:16,196 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 20:50:16,197 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135977840] [2021-07-09 20:50:16,197 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135977840] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 20:50:16,197 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747416027] [2021-07-09 20:50:16,197 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 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 [2021-07-09 20:50:16,242 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-07-09 20:50:16,243 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-09 20:50:16,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 15 conjunts are in the unsatisfiable core [2021-07-09 20:50:16,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-09 20:50:16,362 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 64 proven. 31 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-07-09 20:50:16,362 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747416027] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 20:50:16,362 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-09 20:50:16,362 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2021-07-09 20:50:16,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615499562] [2021-07-09 20:50:16,362 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-07-09 20:50:16,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 20:50:16,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-07-09 20:50:16,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2021-07-09 20:50:16,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-09 20:50:16,363 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-09 20:50:16,363 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 3.466666666666667) internal successors, (52), 14 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 20:50:16,363 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-09 20:50:16,363 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-09 20:50:16,363 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-07-09 20:50:16,363 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-09 20:50:16,363 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2021-07-09 20:50:16,363 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-07-09 20:50:16,363 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-09 20:50:16,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-09 20:50:16,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-09 20:50:16,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-09 20:50:16,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-09 20:50:16,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-07-09 20:50:16,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-09 20:50:16,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-07-09 20:50:16,745 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 20:50:16,745 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 20:50:16,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 20:50:16,745 INFO L82 PathProgramCache]: Analyzing trace with hash 838658018, now seen corresponding path program 7 times [2021-07-09 20:50:16,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 20:50:16,746 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039356247] [2021-07-09 20:50:16,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 20:50:16,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 20:50:16,885 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 70 proven. 25 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-07-09 20:50:16,885 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 20:50:16,885 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039356247] [2021-07-09 20:50:16,885 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039356247] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 20:50:16,885 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595954091] [2021-07-09 20:50:16,885 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 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 20:50:16,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 20:50:16,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 13 conjunts are in the unsatisfiable core [2021-07-09 20:50:16,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-09 20:50:17,167 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 47 proven. 25 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-07-09 20:50:17,168 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [595954091] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 20:50:17,168 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-09 20:50:17,168 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2021-07-09 20:50:17,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336714529] [2021-07-09 20:50:17,168 INFO L462 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-07-09 20:50:17,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 20:50:17,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-07-09 20:50:17,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=585, Unknown=0, NotChecked=0, Total=702 [2021-07-09 20:50:17,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-09 20:50:17,169 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-09 20:50:17,169 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 3.2962962962962963) internal successors, (89), 26 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 20:50:17,169 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-09 20:50:17,169 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-09 20:50:17,169 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-07-09 20:50:17,169 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-09 20:50:17,169 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2021-07-09 20:50:17,170 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-07-09 20:50:17,170 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2021-07-09 20:50:17,170 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-09 20:50:17,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-09 20:50:17,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-09 20:50:17,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-09 20:50:17,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-09 20:50:17,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-07-09 20:50:17,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-09 20:50:17,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-07-09 20:50:17,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-07-09 20:50:17,807 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-07-09 20:50:17,807 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 20:50:17,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 20:50:17,807 INFO L82 PathProgramCache]: Analyzing trace with hash -2099230746, now seen corresponding path program 8 times [2021-07-09 20:50:17,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 20:50:17,808 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314281803] [2021-07-09 20:50:17,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 20:50:19,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown