/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-NewStatesSleepPersistent-NoLbe-Lockstep.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/sum-fun.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-a47a088281b0b97d17910950432b7c5b5bc3adeb-a47a088 [2021-07-14 14:17:25,621 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-14 14:17:25,623 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-14 14:17:25,656 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-14 14:17:25,656 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-14 14:17:25,658 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-14 14:17:25,660 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-14 14:17:25,664 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-14 14:17:25,666 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-14 14:17:25,669 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-14 14:17:25,670 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-14 14:17:25,671 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-14 14:17:25,671 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-14 14:17:25,672 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-14 14:17:25,673 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-14 14:17:25,674 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-14 14:17:25,676 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-14 14:17:25,676 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-14 14:17:25,678 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-14 14:17:25,683 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-14 14:17:25,684 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-14 14:17:25,685 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-14 14:17:25,686 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-14 14:17:25,687 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-14 14:17:25,692 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-14 14:17:25,692 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-14 14:17:25,692 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-14 14:17:25,693 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-14 14:17:25,694 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-14 14:17:25,696 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-14 14:17:25,696 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-14 14:17:25,697 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-14 14:17:25,698 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-14 14:17:25,698 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-14 14:17:25,699 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-14 14:17:25,699 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-14 14:17:25,700 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-14 14:17:25,700 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-14 14:17:25,700 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-14 14:17:25,700 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-14 14:17:25,701 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-14 14:17:25,704 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-NewStatesSleepPersistent-NoLbe-Lockstep.epf [2021-07-14 14:17:25,743 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-14 14:17:25,743 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-14 14:17:25,743 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-14 14:17:25,743 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-14 14:17:25,745 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-14 14:17:25,745 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-14 14:17:25,745 INFO L138 SettingsManager]: * Use SBE=true [2021-07-14 14:17:25,746 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-14 14:17:25,746 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-14 14:17:25,746 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-14 14:17:25,747 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-14 14:17:25,747 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-14 14:17:25,747 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-14 14:17:25,747 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-14 14:17:25,747 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-14 14:17:25,747 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-14 14:17:25,747 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-14 14:17:25,747 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-14 14:17:25,747 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-14 14:17:25,748 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-14 14:17:25,748 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-14 14:17:25,748 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-14 14:17:25,748 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-14 14:17:25,748 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-14 14:17:25,748 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-14 14:17:25,748 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-14 14:17:25,748 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-14 14:17:25,748 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-14 14:17:25,748 INFO L138 SettingsManager]: * DFS Order used in POR=PSEUDO_LOCKSTEP [2021-07-14 14:17:25,749 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-14 14:17:25,749 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-14 14:17:25,749 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-07-14 14:17:25,749 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-14 14:17:25,749 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES [2021-07-14 14:17:25,749 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-14 14:17:26,008 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-14 14:17:26,021 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-14 14:17:26,023 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-14 14:17:26,024 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-14 14:17:26,028 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-14 14:17:26,028 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/sum-fun.wvr.bpl [2021-07-14 14:17:26,028 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/sum-fun.wvr.bpl' [2021-07-14 14:17:26,058 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-14 14:17:26,059 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-14 14:17:26,061 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-14 14:17:26,061 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-14 14:17:26,061 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-14 14:17:26,070 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "sum-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 02:17:26" (1/1) ... [2021-07-14 14:17:26,075 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "sum-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 02:17:26" (1/1) ... [2021-07-14 14:17:26,081 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-14 14:17:26,082 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-14 14:17:26,082 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-14 14:17:26,082 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-14 14:17:26,087 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "sum-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 02:17:26" (1/1) ... [2021-07-14 14:17:26,088 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "sum-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 02:17:26" (1/1) ... [2021-07-14 14:17:26,089 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "sum-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 02:17:26" (1/1) ... [2021-07-14 14:17:26,089 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "sum-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 02:17:26" (1/1) ... [2021-07-14 14:17:26,092 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "sum-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 02:17:26" (1/1) ... [2021-07-14 14:17:26,095 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "sum-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 02:17:26" (1/1) ... [2021-07-14 14:17:26,095 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "sum-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 02:17:26" (1/1) ... [2021-07-14 14:17:26,097 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-14 14:17:26,098 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-14 14:17:26,098 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-14 14:17:26,098 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-14 14:17:26,099 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "sum-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 02:17:26" (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 [2021-07-14 14:17:26,155 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-14 14:17:26,155 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-14 14:17:26,155 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-14 14:17:26,155 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-14 14:17:26,155 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-14 14:17:26,155 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-14 14:17:26,155 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-14 14:17:26,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-14 14:17:26,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-14 14:17:26,157 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-07-14 14:17:26,157 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-07-14 14:17:26,157 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-07-14 14:17:26,157 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-14 14:17:26,362 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-14 14:17:26,363 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-07-14 14:17:26,364 INFO L202 PluginConnector]: Adding new model sum-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 02:17:26 BoogieIcfgContainer [2021-07-14 14:17:26,364 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-14 14:17:26,366 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-14 14:17:26,366 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-14 14:17:26,368 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-14 14:17:26,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "sum-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 02:17:26" (1/2) ... [2021-07-14 14:17:26,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50900d38 and model type sum-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 02:17:26, skipping insertion in model container [2021-07-14 14:17:26,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "sum-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 02:17:26" (2/2) ... [2021-07-14 14:17:26,370 INFO L111 eAbstractionObserver]: Analyzing ICFG sum-fun.wvr.bpl [2021-07-14 14:17:26,373 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-14 14:17:26,373 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-14 14:17:26,373 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-14 14:17:26,374 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-14 14:17:26,448 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-07-14 14:17:26,463 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 [2021-07-14 14:17:26,545 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-14 14:17:26,545 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-14 14:17:26,545 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-14 14:17:26,545 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-14 14:17:26,545 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-14 14:17:26,545 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-14 14:17:26,545 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-14 14:17:26,545 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-14 14:17:26,601 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 14:17:26,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 14:17:26,605 INFO L82 PathProgramCache]: Analyzing trace with hash 107147796, now seen corresponding path program 1 times [2021-07-14 14:17:26,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 14:17:26,611 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283265196] [2021-07-14 14:17:26,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 14:17:26,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 14:17:26,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 14:17:26,811 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 14:17:26,811 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283265196] [2021-07-14 14:17:26,811 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283265196] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 14:17:26,811 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 14:17:26,812 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-14 14:17:26,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972370586] [2021-07-14 14:17:26,815 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-14 14:17:26,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 14:17:26,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-14 14:17:26,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-07-14 14:17:26,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 14:17:26,840 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 14:17:26,842 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 14:17:26,842 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 14:17:26,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 14:17:26,913 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-14 14:17:26,913 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 14:17:26,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 14:17:26,914 INFO L82 PathProgramCache]: Analyzing trace with hash 597095090, now seen corresponding path program 1 times [2021-07-14 14:17:26,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 14:17:26,914 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685651003] [2021-07-14 14:17:26,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 14:17:26,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 14:17:26,966 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-14 14:17:26,966 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 14:17:26,966 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685651003] [2021-07-14 14:17:26,966 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685651003] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 14:17:26,967 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 14:17:26,967 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-14 14:17:26,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539762773] [2021-07-14 14:17:26,968 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-14 14:17:26,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 14:17:26,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-14 14:17:26,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-14 14:17:26,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 14:17:26,969 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 14:17:26,969 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) [2021-07-14 14:17:26,969 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 14:17:26,969 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 14:17:27,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 14:17:27,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 14:17:27,006 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-14 14:17:27,006 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 14:17:27,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 14:17:27,006 INFO L82 PathProgramCache]: Analyzing trace with hash -1592437936, now seen corresponding path program 1 times [2021-07-14 14:17:27,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 14:17:27,007 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804563086] [2021-07-14 14:17:27,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 14:17:27,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 14:17:27,365 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 14:17:27,365 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 14:17:27,365 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804563086] [2021-07-14 14:17:27,365 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804563086] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 14:17:27,365 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [335517210] [2021-07-14 14:17:27,365 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 [2021-07-14 14:17:27,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 14:17:27,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 19 conjunts are in the unsatisfiable core [2021-07-14 14:17:27,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 14:17:27,673 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 14:17:27,676 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-07-14 14:17:27,678 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-14 14:17:27,683 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 14:17:27,701 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-07-14 14:17:27,701 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:20, output treesize:7 [2021-07-14 14:17:27,753 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 14:17:27,753 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [335517210] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 14:17:27,753 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 14:17:27,753 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-07-14 14:17:27,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812669688] [2021-07-14 14:17:27,754 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-07-14 14:17:27,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 14:17:27,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-07-14 14:17:27,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-07-14 14:17:27,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 14:17:27,756 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 14:17:27,757 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 11 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) [2021-07-14 14:17:27,758 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 14:17:27,758 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 14:17:27,758 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 14:17:27,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 14:17:27,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 14:17:27,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 14:17:28,177 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 14:17:28,177 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 14:17:28,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 14:17:28,178 INFO L82 PathProgramCache]: Analyzing trace with hash 217830638, now seen corresponding path program 2 times [2021-07-14 14:17:28,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 14:17:28,178 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870029243] [2021-07-14 14:17:28,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 14:17:28,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 14:17:28,218 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 14:17:28,218 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 14:17:28,218 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870029243] [2021-07-14 14:17:28,218 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870029243] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 14:17:28,218 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1336175101] [2021-07-14 14:17:28,218 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 [2021-07-14 14:17:28,307 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-14 14:17:28,308 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 14:17:28,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-07-14 14:17:28,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 14:17:28,418 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 14:17:28,419 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1336175101] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 14:17:28,419 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 14:17:28,419 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-07-14 14:17:28,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138141785] [2021-07-14 14:17:28,419 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-07-14 14:17:28,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 14:17:28,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-07-14 14:17:28,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-07-14 14:17:28,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 14:17:28,420 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 14:17:28,421 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 14:17:28,421 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 14:17:28,421 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 14:17:28,421 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 14:17:28,421 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 14:17:28,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 14:17:28,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 14:17:28,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 14:17:28,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-14 14:17:28,830 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 14:17:28,832 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 14:17:28,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 14:17:28,833 INFO L82 PathProgramCache]: Analyzing trace with hash -537545550, now seen corresponding path program 1 times [2021-07-14 14:17:28,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 14:17:28,833 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913137311] [2021-07-14 14:17:28,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 14:17:28,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 14:17:28,880 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-14 14:17:28,880 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 14:17:28,880 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913137311] [2021-07-14 14:17:28,880 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913137311] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 14:17:28,880 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805499632] [2021-07-14 14:17:28,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2021-07-14 14:17:28,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 14:17:28,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2021-07-14 14:17:28,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 14:17:29,059 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-14 14:17:29,060 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805499632] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 14:17:29,060 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 14:17:29,060 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-07-14 14:17:29,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308495886] [2021-07-14 14:17:29,060 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-14 14:17:29,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 14:17:29,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-14 14:17:29,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-07-14 14:17:29,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 14:17:29,061 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 14:17:29,061 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 14:17:29,061 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 14:17:29,061 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 14:17:29,061 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 14:17:29,062 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-07-14 14:17:29,062 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 14:17:29,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 14:17:29,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 14:17:29,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 14:17:29,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-14 14:17:29,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 14:17:29,398 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 14:17:29,398 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 14:17:29,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 14:17:29,398 INFO L82 PathProgramCache]: Analyzing trace with hash -246413360, now seen corresponding path program 2 times [2021-07-14 14:17:29,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 14:17:29,399 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530266222] [2021-07-14 14:17:29,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 14:17:29,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 14:17:29,652 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 14:17:29,652 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 14:17:29,652 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530266222] [2021-07-14 14:17:29,652 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530266222] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 14:17:29,652 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230255388] [2021-07-14 14:17:29,652 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 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 [2021-07-14 14:17:29,766 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-14 14:17:29,766 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 14:17:29,767 WARN L261 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 39 conjunts are in the unsatisfiable core [2021-07-14 14:17:29,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 14:17:30,249 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 14:17:30,250 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 39 [2021-07-14 14:17:30,257 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-07-14 14:17:30,266 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 14:17:30,273 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-07-14 14:17:30,273 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:43, output treesize:31 [2021-07-14 14:17:30,342 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 14:17:30,342 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [230255388] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 14:17:30,342 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 14:17:30,342 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 16] total 25 [2021-07-14 14:17:30,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271330171] [2021-07-14 14:17:30,343 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-14 14:17:30,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 14:17:30,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-14 14:17:30,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=506, Unknown=0, NotChecked=0, Total=600 [2021-07-14 14:17:30,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 14:17:30,343 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 14:17:30,344 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 2.0) internal successors, (50), 25 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 14:17:30,344 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 14:17:30,344 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 14:17:30,344 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 14:17:30,344 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-07-14 14:17:30,344 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 14:17:30,344 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 14:17:31,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 14:17:31,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 14:17:31,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 14:17:31,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-14 14:17:31,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 14:17:31,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-14 14:17:31,683 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-07-14 14:17:31,684 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 14:17:31,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 14:17:31,685 INFO L82 PathProgramCache]: Analyzing trace with hash 358746990, now seen corresponding path program 3 times [2021-07-14 14:17:31,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 14:17:31,685 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222538104] [2021-07-14 14:17:31,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 14:17:31,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 14:17:31,752 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 14:17:31,752 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 14:17:31,752 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222538104] [2021-07-14 14:17:31,752 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222538104] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 14:17:31,753 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1532144484] [2021-07-14 14:17:31,753 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 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 [2021-07-14 14:17:31,857 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-07-14 14:17:31,857 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 14:17:31,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 11 conjunts are in the unsatisfiable core [2021-07-14 14:17:31,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 14:17:32,024 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 14:17:32,025 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1532144484] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 14:17:32,025 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 14:17:32,025 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2021-07-14 14:17:32,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941850260] [2021-07-14 14:17:32,025 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-07-14 14:17:32,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 14:17:32,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-07-14 14:17:32,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2021-07-14 14:17:32,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 14:17:32,026 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 14:17:32,026 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.55) internal successors, (51), 20 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 14:17:32,026 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 14:17:32,026 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 14:17:32,026 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 14:17:32,026 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-07-14 14:17:32,026 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 14:17:32,026 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-07-14 14:17:32,026 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 14:17:32,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 14:17:32,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 14:17:32,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 14:17:32,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-14 14:17:32,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 14:17:32,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-14 14:17:32,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-07-14 14:17:32,642 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 14:17:32,642 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 14:17:32,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 14:17:32,642 INFO L82 PathProgramCache]: Analyzing trace with hash 1163701042, now seen corresponding path program 4 times [2021-07-14 14:17:32,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 14:17:32,643 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519022451] [2021-07-14 14:17:32,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 14:17:32,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 14:17:32,706 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 16 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-14 14:17:32,707 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 14:17:32,707 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519022451] [2021-07-14 14:17:32,707 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519022451] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 14:17:32,707 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282533815] [2021-07-14 14:17:32,707 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 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 [2021-07-14 14:17:32,740 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-07-14 14:17:32,741 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 14:17:32,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 11 conjunts are in the unsatisfiable core [2021-07-14 14:17:32,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 14:17:32,859 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 16 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-14 14:17:32,859 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1282533815] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 14:17:32,859 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 14:17:32,860 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 17 [2021-07-14 14:17:32,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191616413] [2021-07-14 14:17:32,860 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-14 14:17:32,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 14:17:32,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-14 14:17:32,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2021-07-14 14:17:32,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 14:17:32,861 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 14:17:32,861 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 17 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 14:17:32,861 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 14:17:32,861 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 14:17:32,861 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 14:17:32,861 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-07-14 14:17:32,861 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 14:17:32,861 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-07-14 14:17:32,861 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2021-07-14 14:17:32,861 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 14:17:33,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 14:17:33,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 14:17:33,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 14:17:33,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-14 14:17:33,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 14:17:33,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-14 14:17:33,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-07-14 14:17:33,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-14 14:17:33,224 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 14:17:33,225 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 14:17:33,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 14:17:33,226 INFO L82 PathProgramCache]: Analyzing trace with hash -323420080, now seen corresponding path program 5 times [2021-07-14 14:17:33,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 14:17:33,226 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379712213] [2021-07-14 14:17:33,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 14:17:33,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 14:17:33,758 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 2 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 14:17:33,759 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 14:17:33,759 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379712213] [2021-07-14 14:17:33,759 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379712213] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 14:17:33,759 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858708460] [2021-07-14 14:17:33,759 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 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 [2021-07-14 14:17:33,803 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-07-14 14:17:33,803 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 14:17:33,804 WARN L261 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 50 conjunts are in the unsatisfiable core [2021-07-14 14:17:33,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 14:17:34,501 INFO L354 Elim1Store]: treesize reduction 118, result has 2.5 percent of original size [2021-07-14 14:17:34,501 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 10 new quantified variables, introduced 15 case distinctions, treesize of input 121 treesize of output 73 [2021-07-14 14:17:34,503 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-14 14:17:34,509 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 14:17:34,512 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-07-14 14:17:34,512 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:126, output treesize:5 [2021-07-14 14:17:34,545 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 14:17:34,545 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [858708460] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 14:17:34,545 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 14:17:34,545 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 31 [2021-07-14 14:17:34,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102789973] [2021-07-14 14:17:34,546 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-07-14 14:17:34,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 14:17:34,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-07-14 14:17:34,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=847, Unknown=0, NotChecked=0, Total=930 [2021-07-14 14:17:34,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 14:17:34,547 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 14:17:34,547 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 2.129032258064516) internal successors, (66), 31 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 14:17:34,547 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 14:17:34,547 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 14:17:34,547 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 14:17:34,547 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-07-14 14:17:34,547 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 14:17:34,547 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-07-14 14:17:34,547 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2021-07-14 14:17:34,547 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-07-14 14:17:34,547 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 14:17:36,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 14:17:36,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 14:17:36,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 14:17:36,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-14 14:17:36,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 14:17:36,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-14 14:17:36,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-07-14 14:17:36,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-14 14:17:36,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-07-14 14:17:36,550 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-07-14 14:17:36,550 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 14:17:36,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 14:17:36,550 INFO L82 PathProgramCache]: Analyzing trace with hash -222623860, now seen corresponding path program 6 times [2021-07-14 14:17:36,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 14:17:36,551 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837186796] [2021-07-14 14:17:36,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 14:17:36,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 14:17:37,210 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 14:17:37,211 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 14:17:37,211 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837186796] [2021-07-14 14:17:37,211 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837186796] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 14:17:37,211 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300425296] [2021-07-14 14:17:37,211 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 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 [2021-07-14 14:17:37,259 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-07-14 14:17:37,260 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 14:17:37,262 WARN L261 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 63 conjunts are in the unsatisfiable core [2021-07-14 14:17:37,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 14:17:38,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:17:38,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:17:38,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:17:38,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:17:38,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:17:38,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:17:38,613 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 14:17:38,613 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 21 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 15 case distinctions, treesize of input 50 treesize of output 160 [2021-07-14 14:17:39,447 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 435 DAG size of output: 322 [2021-07-14 14:17:39,610 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 442 DAG size of output: 383 [2021-07-14 14:17:40,044 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 700 DAG size of output: 654 [2021-07-14 14:17:40,636 WARN L205 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 842 DAG size of output: 752 [2021-07-14 14:17:40,856 WARN L205 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 842 DAG size of output: 752 [2021-07-14 14:17:41,097 WARN L205 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 857 DAG size of output: 752 [2021-07-14 14:17:41,310 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 743 DAG size of output: 752 [2021-07-14 14:17:41,318 INFO L550 ElimStorePlain]: Start of recursive call 2: 2 dim-0 vars, End of recursive call: and 3 xjuncts. [2021-07-14 14:17:42,045 WARN L205 SmtUtils]: Spent 726.00 ms on a formula simplification. DAG size of input: 754 DAG size of output: 37 [2021-07-14 14:17:42,046 INFO L628 ElimStorePlain]: treesize reduction 6685, result has 0.8 percent of original size [2021-07-14 14:17:42,071 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-07-14 14:17:42,072 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:72, output treesize:93 [2021-07-14 14:17:42,178 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 14:17:42,179 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [300425296] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 14:17:42,179 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 14:17:42,179 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 22] total 38 [2021-07-14 14:17:42,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674990844] [2021-07-14 14:17:42,180 INFO L462 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-07-14 14:17:42,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 14:17:42,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-07-14 14:17:42,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=1267, Unknown=0, NotChecked=0, Total=1406 [2021-07-14 14:17:42,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 14:17:42,181 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 14:17:42,181 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 1.9473684210526316) internal successors, (74), 38 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 14:17:42,181 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 14:17:42,181 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 14:17:42,181 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 14:17:42,181 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-07-14 14:17:42,181 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 14:17:42,181 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-07-14 14:17:42,181 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2021-07-14 14:17:42,181 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-07-14 14:17:42,181 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-07-14 14:17:42,182 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 14:17:44,952 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2021-07-14 14:17:46,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 14:17:46,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 14:17:46,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 14:17:46,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-14 14:17:46,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 14:17:46,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-14 14:17:46,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-07-14 14:17:46,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-14 14:17:46,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-07-14 14:17:46,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-07-14 14:17:46,336 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 14:17:46,336 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 14:17:46,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 14:17:46,337 INFO L82 PathProgramCache]: Analyzing trace with hash -584692148, now seen corresponding path program 7 times [2021-07-14 14:17:46,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 14:17:46,337 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394884743] [2021-07-14 14:17:46,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 14:17:46,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 14:17:47,053 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 14:17:47,054 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 14:17:47,054 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394884743] [2021-07-14 14:17:47,054 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394884743] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 14:17:47,054 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813015363] [2021-07-14 14:17:47,054 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 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 [2021-07-14 14:17:47,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 14:17:47,097 WARN L261 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 66 conjunts are in the unsatisfiable core [2021-07-14 14:17:47,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 14:17:47,997 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 14:17:47,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:17:47,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:17:47,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:17:48,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:17:48,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:17:48,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:17:48,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:17:48,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:17:48,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:17:48,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:17:48,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:17:48,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:17:48,008 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 14:17:48,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:17:48,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:17:48,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:17:48,014 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 14:17:48,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:17:48,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:17:48,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:17:48,018 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 21 disjoint index pairs (out of 45 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 34 [2021-07-14 14:17:48,019 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-14 14:17:48,028 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 14:17:48,031 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-07-14 14:17:48,031 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:100, output treesize:11 [2021-07-14 14:17:48,070 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 14:17:48,070 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1813015363] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 14:17:48,070 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 14:17:48,070 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 31 [2021-07-14 14:17:48,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439362371] [2021-07-14 14:17:48,071 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-07-14 14:17:48,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 14:17:48,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-07-14 14:17:48,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=848, Unknown=0, NotChecked=0, Total=930 [2021-07-14 14:17:48,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 14:17:48,072 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 14:17:48,073 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 2.161290322580645) internal successors, (67), 31 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 14:17:48,073 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 14:17:48,073 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 14:17:48,073 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 14:17:48,073 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-07-14 14:17:48,073 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 14:17:48,073 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-07-14 14:17:48,073 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2021-07-14 14:17:48,073 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-07-14 14:17:48,073 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-07-14 14:17:48,073 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 56 states. [2021-07-14 14:17:48,073 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 14:17:48,412 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 74 [2021-07-14 14:17:49,635 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 57 [2021-07-14 14:17:49,982 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 74 [2021-07-14 14:17:50,308 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 82 [2021-07-14 14:17:50,674 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 99 [2021-07-14 14:17:50,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 14:17:50,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 14:17:50,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 14:17:50,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-14 14:17:50,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 14:17:50,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-14 14:17:50,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-07-14 14:17:50,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-14 14:17:50,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-07-14 14:17:50,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-07-14 14:17:50,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-07-14 14:17:51,175 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 14:17:51,176 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 14:17:51,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 14:17:51,176 INFO L82 PathProgramCache]: Analyzing trace with hash 1672041962, now seen corresponding path program 8 times [2021-07-14 14:17:51,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 14:17:51,177 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232681296] [2021-07-14 14:17:51,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 14:17:51,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 14:17:51,382 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 36 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 14:17:51,383 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 14:17:51,383 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232681296] [2021-07-14 14:17:51,383 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232681296] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 14:17:51,383 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426857986] [2021-07-14 14:17:51,383 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 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 14:17:51,427 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-14 14:17:51,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 14:17:51,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 19 conjunts are in the unsatisfiable core [2021-07-14 14:17:51,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 14:17:51,834 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 49 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 14:17:51,834 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426857986] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 14:17:51,834 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 14:17:51,834 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 35 [2021-07-14 14:17:51,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729629994] [2021-07-14 14:17:51,835 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-07-14 14:17:51,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 14:17:51,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-07-14 14:17:51,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=980, Unknown=0, NotChecked=0, Total=1190 [2021-07-14 14:17:51,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 14:17:51,836 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 14:17:51,836 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 2.3142857142857145) internal successors, (81), 35 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 14:17:51,836 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 14:17:51,836 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 14:17:51,836 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 14:17:51,836 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-07-14 14:17:51,836 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 14:17:51,836 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-07-14 14:17:51,836 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2021-07-14 14:17:51,836 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-07-14 14:17:51,836 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-07-14 14:17:51,837 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 56 states. [2021-07-14 14:17:51,837 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 29 states. [2021-07-14 14:17:51,837 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 14:17:52,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 14:17:52,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 14:17:52,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 14:17:52,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-14 14:17:52,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 14:17:52,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-14 14:17:52,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-07-14 14:17:52,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-14 14:17:52,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-07-14 14:17:52,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-07-14 14:17:52,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-07-14 14:17:52,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-07-14 14:17:53,051 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable231 [2021-07-14 14:17:53,051 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 14:17:53,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 14:17:53,051 INFO L82 PathProgramCache]: Analyzing trace with hash 2016109776, now seen corresponding path program 9 times [2021-07-14 14:17:53,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 14:17:53,051 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816707309] [2021-07-14 14:17:53,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 14:17:53,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 14:17:53,227 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 53 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 14:17:53,227 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 14:17:53,228 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816707309] [2021-07-14 14:17:53,228 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816707309] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 14:17:53,228 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957932177] [2021-07-14 14:17:53,228 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 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 14:17:53,267 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-07-14 14:17:53,268 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 14:17:53,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 21 conjunts are in the unsatisfiable core [2021-07-14 14:17:53,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 14:17:53,707 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 53 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 14:17:53,708 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1957932177] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 14:17:53,708 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 14:17:53,708 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 40 [2021-07-14 14:17:53,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135397499] [2021-07-14 14:17:53,710 INFO L462 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-07-14 14:17:53,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 14:17:53,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-07-14 14:17:53,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=299, Invalid=1261, Unknown=0, NotChecked=0, Total=1560 [2021-07-14 14:17:53,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 14:17:53,712 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 14:17:53,713 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 40 states, 40 states have (on average 2.275) internal successors, (91), 40 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 14:17:53,713 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 14:17:53,713 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 14:17:53,713 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 14:17:53,713 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-07-14 14:17:53,713 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 14:17:53,713 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-07-14 14:17:53,713 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2021-07-14 14:17:53,713 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-07-14 14:17:53,713 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-07-14 14:17:53,713 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 56 states. [2021-07-14 14:17:53,713 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 29 states. [2021-07-14 14:17:53,713 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 45 states. [2021-07-14 14:17:53,713 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 14:17:54,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 14:17:54,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 14:17:54,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 14:17:54,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-14 14:17:54,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 14:17:54,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-14 14:17:54,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-07-14 14:17:54,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-14 14:17:54,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-07-14 14:17:54,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-07-14 14:17:54,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-07-14 14:17:54,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-07-14 14:17:54,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-07-14 14:17:54,257 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable232 [2021-07-14 14:17:54,257 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 14:17:54,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 14:17:54,258 INFO L82 PathProgramCache]: Analyzing trace with hash 754183790, now seen corresponding path program 10 times [2021-07-14 14:17:54,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 14:17:54,258 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119076075] [2021-07-14 14:17:54,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 14:17:54,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 14:17:54,473 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 53 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 14:17:54,473 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 14:17:54,473 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119076075] [2021-07-14 14:17:54,473 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119076075] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 14:17:54,473 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [977797304] [2021-07-14 14:17:54,473 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 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 14:17:54,508 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-07-14 14:17:54,508 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 14:17:54,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 22 conjunts are in the unsatisfiable core [2021-07-14 14:17:54,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 14:17:54,949 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 53 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 14:17:54,949 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [977797304] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 14:17:54,949 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 14:17:54,950 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 42 [2021-07-14 14:17:54,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584043201] [2021-07-14 14:17:54,950 INFO L462 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-07-14 14:17:54,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 14:17:54,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-07-14 14:17:54,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=332, Invalid=1390, Unknown=0, NotChecked=0, Total=1722 [2021-07-14 14:17:54,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 14:17:54,951 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 14:17:54,952 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 42 states, 42 states have (on average 2.261904761904762) internal successors, (95), 42 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 14:17:54,952 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 14:17:54,952 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 14:17:54,952 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 14:17:54,952 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-07-14 14:17:54,952 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 14:17:54,952 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-07-14 14:17:54,952 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2021-07-14 14:17:54,952 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-07-14 14:17:54,952 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-07-14 14:17:54,953 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 56 states. [2021-07-14 14:17:54,953 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 29 states. [2021-07-14 14:17:54,953 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 45 states. [2021-07-14 14:17:54,953 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 31 states. [2021-07-14 14:17:54,953 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 14:17:55,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 14:17:55,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 14:17:55,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 14:17:55,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-14 14:17:55,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 14:17:55,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-14 14:17:55,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-07-14 14:17:55,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-14 14:17:55,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-07-14 14:17:55,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-07-14 14:17:55,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-07-14 14:17:55,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-07-14 14:17:55,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-07-14 14:17:55,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-07-14 14:17:55,499 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable233 [2021-07-14 14:17:55,500 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 14:17:55,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 14:17:55,500 INFO L82 PathProgramCache]: Analyzing trace with hash -775911284, now seen corresponding path program 11 times [2021-07-14 14:17:55,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 14:17:55,500 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402457449] [2021-07-14 14:17:55,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 14:17:55,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 14:17:56,379 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 14:17:56,380 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 14:17:56,380 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402457449] [2021-07-14 14:17:56,380 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402457449] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 14:17:56,380 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093340376] [2021-07-14 14:17:56,380 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 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 14:17:56,456 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2021-07-14 14:17:56,457 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 14:17:56,458 WARN L261 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 92 conjunts are in the unsatisfiable core [2021-07-14 14:17:56,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 14:17:57,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:17:57,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:17:57,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:17:57,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:17:57,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:17:57,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:17:57,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:17:57,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:17:57,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:17:57,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:17:57,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:17:57,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:17:57,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:17:57,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:17:57,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:17:57,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:17:57,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:17:57,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:17:57,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:17:57,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:17:57,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:17:57,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:17:57,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:17:57,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:17:57,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:17:57,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:17:57,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:17:57,916 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 14:17:58,007 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 14:17:58,007 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 13 select indices, 13 select index equivalence classes, 47 disjoint index pairs (out of 78 index pairs), introduced 12 new quantified variables, introduced 21 case distinctions, treesize of input 109 treesize of output 217 [2021-07-14 14:17:58,059 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 3 xjuncts. [2021-07-14 14:17:58,095 INFO L628 ElimStorePlain]: treesize reduction 102, result has 28.7 percent of original size [2021-07-14 14:17:58,100 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-07-14 14:17:58,101 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:133, output treesize:33 [2021-07-14 14:17:58,216 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 14:17:58,216 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2093340376] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 14:17:58,216 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 14:17:58,216 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 27] total 41 [2021-07-14 14:17:58,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247595334] [2021-07-14 14:17:58,217 INFO L462 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-07-14 14:17:58,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 14:17:58,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-07-14 14:17:58,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=1547, Unknown=0, NotChecked=0, Total=1640 [2021-07-14 14:17:58,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 14:17:58,217 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 14:17:58,218 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 41 states, 41 states have (on average 2.097560975609756) internal successors, (86), 41 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 14:17:58,218 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 14:17:58,218 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 14:17:58,218 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 14:17:58,218 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-07-14 14:17:58,218 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 14:17:58,218 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-07-14 14:17:58,218 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2021-07-14 14:17:58,218 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-07-14 14:17:58,218 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-07-14 14:17:58,218 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 56 states. [2021-07-14 14:17:58,218 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 29 states. [2021-07-14 14:17:58,218 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 45 states. [2021-07-14 14:17:58,218 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 31 states. [2021-07-14 14:17:58,218 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 34 states. [2021-07-14 14:17:58,218 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 14:17:58,689 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 110 [2021-07-14 14:17:59,429 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 40 [2021-07-14 14:18:00,199 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 57 [2021-07-14 14:18:00,618 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 70 [2021-07-14 14:18:01,070 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 83 [2021-07-14 14:18:01,552 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 96 [2021-07-14 14:18:02,296 WARN L205 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 122 [2021-07-14 14:18:03,184 WARN L205 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 141 [2021-07-14 14:18:03,914 WARN L205 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 152 [2021-07-14 14:18:04,803 WARN L205 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 159 [2021-07-14 14:18:05,294 WARN L205 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 150 [2021-07-14 14:18:05,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 14:18:05,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 14:18:05,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 14:18:05,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-14 14:18:05,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 14:18:05,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-14 14:18:05,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-07-14 14:18:05,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-14 14:18:05,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-07-14 14:18:05,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-07-14 14:18:05,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-07-14 14:18:05,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-07-14 14:18:05,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-07-14 14:18:05,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-07-14 14:18:05,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-07-14 14:18:06,001 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 14:18:06,001 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 14:18:06,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 14:18:06,002 INFO L82 PathProgramCache]: Analyzing trace with hash 1976505130, now seen corresponding path program 12 times [2021-07-14 14:18:06,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 14:18:06,002 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758036232] [2021-07-14 14:18:06,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 14:18:06,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 14:18:06,277 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 81 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 14:18:06,277 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 14:18:06,277 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758036232] [2021-07-14 14:18:06,277 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758036232] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 14:18:06,277 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833470703] [2021-07-14 14:18:06,277 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 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 14:18:06,354 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2021-07-14 14:18:06,354 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 14:18:06,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 25 conjunts are in the unsatisfiable core [2021-07-14 14:18:06,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 14:18:06,990 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 100 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 14:18:06,991 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833470703] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 14:18:06,991 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 14:18:06,991 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 47 [2021-07-14 14:18:06,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377184230] [2021-07-14 14:18:06,991 INFO L462 AbstractCegarLoop]: Interpolant automaton has 47 states [2021-07-14 14:18:06,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 14:18:06,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-07-14 14:18:06,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=381, Invalid=1781, Unknown=0, NotChecked=0, Total=2162 [2021-07-14 14:18:06,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 14:18:06,993 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 14:18:06,993 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 47 states, 47 states have (on average 2.234042553191489) internal successors, (105), 47 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 14:18:06,993 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 14:18:06,993 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 14:18:06,993 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 14:18:06,993 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-07-14 14:18:06,993 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 14:18:06,993 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-07-14 14:18:06,993 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2021-07-14 14:18:06,993 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-07-14 14:18:06,993 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-07-14 14:18:06,994 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 56 states. [2021-07-14 14:18:06,994 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 29 states. [2021-07-14 14:18:06,994 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 45 states. [2021-07-14 14:18:06,994 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 31 states. [2021-07-14 14:18:06,994 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 34 states. [2021-07-14 14:18:06,994 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 43 states. [2021-07-14 14:18:06,994 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 14:18:08,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 14:18:08,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 14:18:08,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 14:18:08,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-14 14:18:08,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 14:18:08,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-14 14:18:08,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-07-14 14:18:08,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-14 14:18:08,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-07-14 14:18:08,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-07-14 14:18:08,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-07-14 14:18:08,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-07-14 14:18:08,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-07-14 14:18:08,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-07-14 14:18:08,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-07-14 14:18:08,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-07-14 14:18:09,193 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable259 [2021-07-14 14:18:09,193 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 14:18:09,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 14:18:09,194 INFO L82 PathProgramCache]: Analyzing trace with hash -841076208, now seen corresponding path program 13 times [2021-07-14 14:18:09,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 14:18:09,194 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057550418] [2021-07-14 14:18:09,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 14:18:09,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 14:18:09,512 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 104 proven. 142 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 14:18:09,513 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 14:18:09,513 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057550418] [2021-07-14 14:18:09,513 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057550418] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 14:18:09,513 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653324175] [2021-07-14 14:18:09,513 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 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 14:18:09,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 14:18:09,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 25 conjunts are in the unsatisfiable core [2021-07-14 14:18:09,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 14:18:10,233 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 121 proven. 121 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-07-14 14:18:10,234 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [653324175] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 14:18:10,234 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 14:18:10,234 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 26] total 52 [2021-07-14 14:18:10,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585861712] [2021-07-14 14:18:10,235 INFO L462 AbstractCegarLoop]: Interpolant automaton has 52 states [2021-07-14 14:18:10,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 14:18:10,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-07-14 14:18:10,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=357, Invalid=2295, Unknown=0, NotChecked=0, Total=2652 [2021-07-14 14:18:10,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 14:18:10,236 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 14:18:10,236 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 52 states, 52 states have (on average 2.2884615384615383) internal successors, (119), 52 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 14:18:10,236 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 14:18:10,236 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 14:18:10,237 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 14:18:10,237 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-07-14 14:18:10,237 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 14:18:10,237 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-07-14 14:18:10,237 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2021-07-14 14:18:10,237 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-07-14 14:18:10,237 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-07-14 14:18:10,237 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 56 states. [2021-07-14 14:18:10,237 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 29 states. [2021-07-14 14:18:10,237 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 45 states. [2021-07-14 14:18:10,237 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 31 states. [2021-07-14 14:18:10,237 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 34 states. [2021-07-14 14:18:10,237 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 43 states. [2021-07-14 14:18:10,237 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 63 states. [2021-07-14 14:18:10,238 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 14:18:11,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 14:18:11,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 14:18:11,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 14:18:11,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-14 14:18:11,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 14:18:11,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-14 14:18:11,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-07-14 14:18:11,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-14 14:18:11,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-07-14 14:18:11,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-07-14 14:18:11,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-07-14 14:18:11,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-07-14 14:18:11,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-07-14 14:18:11,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-07-14 14:18:11,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-07-14 14:18:11,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-07-14 14:18:11,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-07-14 14:18:11,880 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable260,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 14:18:11,880 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 14:18:11,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 14:18:11,880 INFO L82 PathProgramCache]: Analyzing trace with hash -369148242, now seen corresponding path program 14 times [2021-07-14 14:18:11,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 14:18:11,881 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516187058] [2021-07-14 14:18:11,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 14:18:11,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 14:18:12,176 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 104 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 14:18:12,176 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 14:18:12,176 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516187058] [2021-07-14 14:18:12,176 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516187058] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 14:18:12,176 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868063752] [2021-07-14 14:18:12,176 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 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 14:18:12,275 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-14 14:18:12,275 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 14:18:12,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 28 conjunts are in the unsatisfiable core [2021-07-14 14:18:12,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 14:18:12,919 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 104 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 14:18:12,919 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1868063752] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 14:18:12,919 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 14:18:12,919 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 54 [2021-07-14 14:18:12,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402556731] [2021-07-14 14:18:12,919 INFO L462 AbstractCegarLoop]: Interpolant automaton has 54 states [2021-07-14 14:18:12,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 14:18:12,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-07-14 14:18:12,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=545, Invalid=2317, Unknown=0, NotChecked=0, Total=2862 [2021-07-14 14:18:12,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 14:18:12,920 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 14:18:12,921 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 54 states, 54 states have (on average 2.2037037037037037) internal successors, (119), 54 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 14:18:12,921 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 14:18:12,921 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 14:18:12,921 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 14:18:12,921 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-07-14 14:18:12,921 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 14:18:12,921 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-07-14 14:18:12,921 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2021-07-14 14:18:12,921 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-07-14 14:18:12,921 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-07-14 14:18:12,921 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 56 states. [2021-07-14 14:18:12,921 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 29 states. [2021-07-14 14:18:12,921 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 45 states. [2021-07-14 14:18:12,921 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 31 states. [2021-07-14 14:18:12,921 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 34 states. [2021-07-14 14:18:12,921 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 43 states. [2021-07-14 14:18:12,921 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 63 states. [2021-07-14 14:18:12,921 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 55 states. [2021-07-14 14:18:12,921 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 14:18:13,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 14:18:13,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 14:18:13,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 14:18:13,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-14 14:18:13,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 14:18:13,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-14 14:18:13,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-07-14 14:18:13,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-14 14:18:13,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-07-14 14:18:13,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-07-14 14:18:13,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-07-14 14:18:13,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-07-14 14:18:13,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-07-14 14:18:13,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-07-14 14:18:13,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-07-14 14:18:13,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-07-14 14:18:13,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-07-14 14:18:13,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-07-14 14:18:13,620 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable261,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 14:18:13,620 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 14:18:13,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 14:18:13,620 INFO L82 PathProgramCache]: Analyzing trace with hash -2112906292, now seen corresponding path program 15 times [2021-07-14 14:18:13,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 14:18:13,620 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507834835] [2021-07-14 14:18:13,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 14:18:13,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 14:18:14,905 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 294 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 14:18:14,905 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 14:18:14,905 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507834835] [2021-07-14 14:18:14,905 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507834835] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 14:18:14,905 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672163818] [2021-07-14 14:18:14,906 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 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 14:18:14,958 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2021-07-14 14:18:14,958 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 14:18:14,959 WARN L261 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 116 conjunts are in the unsatisfiable core [2021-07-14 14:18:14,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 14:18:30,409 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 14:18:30,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:18:30,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:18:30,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:18:30,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:18:30,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:18:30,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:18:30,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:18:30,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:18:30,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:18:30,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:18:30,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:18:30,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:18:30,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:18:30,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:18:30,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:18:30,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:18:30,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:18:30,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:18:30,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:18:30,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:18:30,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:18:30,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:18:30,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:18:30,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:18:30,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:18:30,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:18:30,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:18:30,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:18:30,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:18:30,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:18:30,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:18:30,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:18:30,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:18:30,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:18:30,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:18:30,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:18:30,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:18:30,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:18:30,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:18:30,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:18:30,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:18:30,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:18:30,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:18:30,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:18:30,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:18:30,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:18:30,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 14:18:30,551 INFO L244 Elim1Store]: Index analysis took 148 ms [2021-07-14 14:18:32,031 WARN L205 SmtUtils]: Spent 1.48 s on a formula simplification that was a NOOP. DAG size: 464 [2021-07-14 14:18:32,032 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 14:18:32,032 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 20 select indices, 20 select index equivalence classes, 66 disjoint index pairs (out of 190 index pairs), introduced 19 new quantified variables, introduced 117 case distinctions, treesize of input 158 treesize of output 1080 [2021-07-14 14:18:32,464 WARN L205 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 897 DAG size of output: 762 [2021-07-14 14:18:32,924 WARN L205 SmtUtils]: Spent 434.00 ms on a formula simplification. DAG size of input: 931 DAG size of output: 795 [2021-07-14 14:18:42,782 WARN L205 SmtUtils]: Spent 9.51 s on a formula simplification. DAG size of input: 5355 DAG size of output: 3923 [2021-07-14 14:18:53,806 WARN L205 SmtUtils]: Spent 10.78 s on a formula simplification. DAG size of input: 5388 DAG size of output: 3957 [2021-07-14 14:21:23,094 WARN L205 SmtUtils]: Spent 2.44 m on a formula simplification. DAG size of input: 33940 DAG size of output: 23289 [2021-07-14 14:23:51,929 WARN L205 SmtUtils]: Spent 2.46 m on a formula simplification. DAG size of input: 33980 DAG size of output: 23330 [2021-07-14 14:24:05,928 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-07-14 14:24:18,371 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 68 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown