/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-DelaySleep-NoLbe-Random7777.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/inc-subseq-array.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2abb09bbbae98a04ae2fcc735832bfdba44f6fbc-2abb09b [2021-06-07 04:25:43,038 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-07 04:25:43,039 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-07 04:25:43,067 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-07 04:25:43,087 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-07 04:25:43,088 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-07 04:25:43,089 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-07 04:25:43,089 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-07 04:25:43,090 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-07 04:25:43,091 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-07 04:25:43,092 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-07 04:25:43,093 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-07 04:25:43,094 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-07 04:25:43,100 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-07 04:25:43,102 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-07 04:25:43,102 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-07 04:25:43,104 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-07 04:25:43,113 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-DelaySleep-NoLbe-Random7777.epf [2021-06-07 04:25:43,149 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-07 04:25:43,150 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-07 04:25:43,150 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-07 04:25:43,150 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-07 04:25:43,151 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-07 04:25:43,151 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-07 04:25:43,151 INFO L138 SettingsManager]: * Use SBE=true [2021-06-07 04:25:43,152 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-07 04:25:43,152 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-07 04:25:43,152 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-07 04:25:43,152 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-07 04:25:43,152 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-07 04:25:43,152 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-07 04:25:43,152 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-07 04:25:43,152 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-07 04:25:43,153 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-07 04:25:43,153 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-07 04:25:43,153 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-07 04:25:43,153 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-07 04:25:43,153 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-07 04:25:43,153 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-07 04:25:43,153 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-07 04:25:43,154 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-07 04:25:43,154 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-07 04:25:43,154 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-07 04:25:43,154 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-07 04:25:43,154 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-07 04:25:43,154 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-07 04:25:43,154 INFO L138 SettingsManager]: * DFS Order used in POR=RANDOM [2021-06-07 04:25:43,155 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-07 04:25:43,155 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-07 04:25:43,155 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-06-07 04:25:43,155 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-07 04:25:43,155 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-06-07 04:25:43,155 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-06-07 04:25:43,155 INFO L138 SettingsManager]: * Random seed used by POR DFS order=7777 WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-07 04:25:43,463 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-07 04:25:43,487 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-07 04:25:43,489 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-07 04:25:43,490 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-07 04:25:43,491 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-07 04:25:43,492 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/inc-subseq-array.wvr.bpl [2021-06-07 04:25:43,492 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/inc-subseq-array.wvr.bpl' [2021-06-07 04:25:43,517 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-07 04:25:43,519 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-07 04:25:43,520 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-07 04:25:43,520 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-07 04:25:43,520 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-07 04:25:43,530 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "inc-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.06 04:25:43" (1/1) ... [2021-06-07 04:25:43,537 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "inc-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.06 04:25:43" (1/1) ... [2021-06-07 04:25:43,543 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-07 04:25:43,544 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-07 04:25:43,544 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-07 04:25:43,544 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-07 04:25:43,551 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "inc-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.06 04:25:43" (1/1) ... [2021-06-07 04:25:43,551 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "inc-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.06 04:25:43" (1/1) ... [2021-06-07 04:25:43,552 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "inc-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.06 04:25:43" (1/1) ... [2021-06-07 04:25:43,552 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "inc-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.06 04:25:43" (1/1) ... [2021-06-07 04:25:43,554 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "inc-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.06 04:25:43" (1/1) ... [2021-06-07 04:25:43,557 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "inc-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.06 04:25:43" (1/1) ... [2021-06-07 04:25:43,558 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "inc-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.06 04:25:43" (1/1) ... [2021-06-07 04:25:43,559 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-07 04:25:43,561 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-07 04:25:43,561 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-07 04:25:43,561 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-07 04:25:43,562 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "inc-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.06 04:25:43" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-07 04:25:43,634 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-07 04:25:43,634 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-07 04:25:43,634 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-07 04:25:43,635 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-07 04:25:43,635 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-07 04:25:43,635 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-07 04:25:43,635 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-07 04:25:43,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-07 04:25:43,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-07 04:25:43,637 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-07 04:25:43,860 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-07 04:25:43,861 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-07 04:25:43,862 INFO L202 PluginConnector]: Adding new model inc-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.06 04:25:43 BoogieIcfgContainer [2021-06-07 04:25:43,862 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-07 04:25:43,864 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-07 04:25:43,864 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-07 04:25:43,890 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-07 04:25:43,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "inc-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.06 04:25:43" (1/2) ... [2021-06-07 04:25:43,891 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@182550b4 and model type inc-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.06 04:25:43, skipping insertion in model container [2021-06-07 04:25:43,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "inc-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.06 04:25:43" (2/2) ... [2021-06-07 04:25:43,892 INFO L111 eAbstractionObserver]: Analyzing ICFG inc-subseq-array.wvr.bpl [2021-06-07 04:25:43,898 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-07 04:25:43,898 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-07 04:25:43,898 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-07 04:25:43,899 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-07 04:25:43,923 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-06-07 04:25:43,942 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 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 [2021-06-07 04:25:43,990 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-07 04:25:43,990 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-07 04:25:43,990 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-07 04:25:43,990 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-07 04:25:43,990 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-07 04:25:43,990 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-07 04:25:43,990 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-07 04:25:43,991 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-07 04:25:44,068 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-07 04:25:44,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-07 04:25:44,075 INFO L82 PathProgramCache]: Analyzing trace with hash 1205992323, now seen corresponding path program 1 times [2021-06-07 04:25:44,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-07 04:25:44,082 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615023567] [2021-06-07 04:25:44,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-07 04:25:44,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-07 04:25:44,220 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-07 04:25:44,221 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-07 04:25:44,222 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615023567] [2021-06-07 04:25:44,222 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615023567] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-07 04:25:44,222 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-07 04:25:44,222 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-07 04:25:44,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549602708] [2021-06-07 04:25:44,226 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-07 04:25:44,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-07 04:25:44,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-07 04:25:44,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-07 04:25:44,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-07 04:25:44,244 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-07 04:25:44,245 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-07 04:25:44,245 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-07 04:25:44,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 04:25:44,312 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-07 04:25:44,312 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-07 04:25:44,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-07 04:25:44,315 INFO L82 PathProgramCache]: Analyzing trace with hash -776643309, now seen corresponding path program 1 times [2021-06-07 04:25:44,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-07 04:25:44,315 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489327972] [2021-06-07 04:25:44,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-07 04:25:44,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-07 04:25:44,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-07 04:25:44,349 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-07 04:25:44,349 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489327972] [2021-06-07 04:25:44,350 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489327972] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-07 04:25:44,350 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-07 04:25:44,350 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-07 04:25:44,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25888179] [2021-06-07 04:25:44,351 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-07 04:25:44,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-07 04:25:44,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-07 04:25:44,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-07 04:25:44,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-07 04:25:44,352 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-07 04:25:44,352 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-07 04:25:44,352 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 04:25:44,353 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-07 04:25:44,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 04:25:44,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 04:25:44,387 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-07 04:25:44,388 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-07 04:25:44,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-07 04:25:44,389 INFO L82 PathProgramCache]: Analyzing trace with hash 571055971, now seen corresponding path program 1 times [2021-06-07 04:25:44,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-07 04:25:44,389 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595812338] [2021-06-07 04:25:44,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-07 04:25:44,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-07 04:25:44,477 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-07 04:25:44,478 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-07 04:25:44,479 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595812338] [2021-06-07 04:25:44,479 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595812338] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-07 04:25:44,479 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-07 04:25:44,479 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-07 04:25:44,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256424058] [2021-06-07 04:25:44,480 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-07 04:25:44,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-07 04:25:44,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-07 04:25:44,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-06-07 04:25:44,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-07 04:25:44,482 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-07 04:25:44,482 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-07 04:25:44,482 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 04:25:44,483 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 04:25:44,483 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-07 04:25:44,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 04:25:44,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 04:25:44,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-07 04:25:44,533 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-07 04:25:44,533 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-07 04:25:44,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-07 04:25:44,534 INFO L82 PathProgramCache]: Analyzing trace with hash 1016586710, now seen corresponding path program 1 times [2021-06-07 04:25:44,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-07 04:25:44,535 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092603538] [2021-06-07 04:25:44,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-07 04:25:44,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-07 04:25:44,623 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 16 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-06-07 04:25:44,625 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-07 04:25:44,625 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092603538] [2021-06-07 04:25:44,625 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092603538] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 04:25:44,626 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437400518] [2021-06-07 04:25:44,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-07 04:25:44,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-07 04:25:44,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-07 04:25:44,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-07 04:25:44,866 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 22 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-06-07 04:25:44,867 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437400518] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 04:25:44,867 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-07 04:25:44,867 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 5 [2021-06-07 04:25:44,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776522191] [2021-06-07 04:25:44,868 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-07 04:25:44,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-07 04:25:44,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-07 04:25:44,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-06-07 04:25:44,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-07 04:25:44,869 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-07 04:25:44,869 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-07 04:25:44,869 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 04:25:44,869 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 04:25:44,869 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-07 04:25:44,869 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-07 04:25:44,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 04:25:44,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 04:25:44,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-07 04:25:44,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-07 04:25:45,148 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-07 04:25:45,149 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-07 04:25:45,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-07 04:25:45,150 INFO L82 PathProgramCache]: Analyzing trace with hash 253867636, now seen corresponding path program 2 times [2021-06-07 04:25:45,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-07 04:25:45,150 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303142680] [2021-06-07 04:25:45,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-07 04:25:45,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-07 04:25:46,123 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 3 proven. 69 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-06-07 04:25:46,123 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-07 04:25:46,123 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303142680] [2021-06-07 04:25:46,123 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303142680] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 04:25:46,123 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145591776] [2021-06-07 04:25:46,124 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-07 04:25:46,167 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-07 04:25:46,168 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-07 04:25:46,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 47 conjunts are in the unsatisfiable core [2021-06-07 04:25:46,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-07 04:25:47,491 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-07 04:25:47,492 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 58 treesize of output 86 [2021-06-07 04:25:47,514 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-07 04:25:47,614 INFO L628 ElimStorePlain]: treesize reduction 92, result has 60.2 percent of original size [2021-06-07 04:25:47,645 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-06-07 04:25:47,645 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:83, output treesize:59 [2021-06-07 04:25:48,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-07 04:25:48,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-07 04:25:48,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-07 04:25:48,187 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-07 04:25:48,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-07 04:25:48,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-07 04:25:48,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-07 04:25:48,191 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-07 04:25:48,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-07 04:25:48,193 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 16 [2021-06-07 04:25:48,196 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-07 04:25:48,203 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-07 04:25:48,205 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-07 04:25:48,205 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:57, output treesize:5 [2021-06-07 04:25:48,218 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 8 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-07 04:25:48,218 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1145591776] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 04:25:48,218 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-07 04:25:48,218 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 26] total 49 [2021-06-07 04:25:48,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614867953] [2021-06-07 04:25:48,220 INFO L462 AbstractCegarLoop]: Interpolant automaton has 50 states [2021-06-07 04:25:48,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-07 04:25:48,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-06-07 04:25:48,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=338, Invalid=2112, Unknown=0, NotChecked=0, Total=2450 [2021-06-07 04:25:48,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-07 04:25:48,223 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-07 04:25:48,223 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 50 states, 50 states have (on average 1.88) internal successors, (94), 49 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-07 04:25:48,223 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 04:25:48,224 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 04:25:48,224 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-07 04:25:48,224 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-07 04:25:48,224 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-07 04:25:49,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 04:25:49,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 04:25:49,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-07 04:25:49,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-07 04:25:49,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-07 04:25:49,288 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-07 04:25:49,289 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-07 04:25:49,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-07 04:25:49,290 INFO L82 PathProgramCache]: Analyzing trace with hash -1339159260, now seen corresponding path program 3 times [2021-06-07 04:25:49,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-07 04:25:49,290 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406242181] [2021-06-07 04:25:49,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-07 04:25:49,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-07 04:25:49,396 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 134 proven. 88 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2021-06-07 04:25:49,396 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-07 04:25:49,396 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406242181] [2021-06-07 04:25:49,396 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406242181] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 04:25:49,396 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141797492] [2021-06-07 04:25:49,396 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-07 04:25:49,470 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-06-07 04:25:49,470 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-07 04:25:49,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 17 conjunts are in the unsatisfiable core [2021-06-07 04:25:49,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-07 04:25:49,647 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 161 proven. 58 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2021-06-07 04:25:49,647 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1141797492] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 04:25:49,647 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-07 04:25:49,648 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 6 [2021-06-07 04:25:49,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010239855] [2021-06-07 04:25:49,648 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-07 04:25:49,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-07 04:25:49,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-07 04:25:49,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-06-07 04:25:49,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-07 04:25:49,649 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-07 04:25:49,649 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-07 04:25:49,649 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 04:25:49,649 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 04:25:49,649 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-07 04:25:49,649 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-07 04:25:49,649 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-06-07 04:25:49,650 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-07 04:25:49,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 04:25:49,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 04:25:49,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-07 04:25:49,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-07 04:25:49,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-07 04:25:49,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-07 04:25:49,900 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-06-07 04:25:49,901 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-07 04:25:49,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-07 04:25:49,901 INFO L82 PathProgramCache]: Analyzing trace with hash 1931742593, now seen corresponding path program 4 times [2021-06-07 04:25:49,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-07 04:25:49,902 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20776349] [2021-06-07 04:25:49,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-07 04:25:49,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-07 04:25:50,984 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 9 proven. 293 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-06-07 04:25:50,984 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-07 04:25:50,985 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20776349] [2021-06-07 04:25:50,996 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20776349] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 04:25:50,997 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102058193] [2021-06-07 04:25:50,997 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-07 04:25:51,053 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-07 04:25:51,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-07 04:25:51,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 95 conjunts are in the unsatisfiable core [2021-06-07 04:25:51,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-07 04:26:23,723 WARN L205 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2021-06-07 04:26:49,271 WARN L205 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 65 [2021-06-07 04:28:13,002 WARN L205 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-06-07 04:28:13,181 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2021-06-07 04:28:13,181 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-07 04:28:13,182 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 122 treesize of output 302 [2021-06-07 04:28:13,259 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-07 04:28:13,753 WARN L205 SmtUtils]: Spent 492.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 166 [2021-06-07 04:28:13,755 INFO L628 ElimStorePlain]: treesize reduction 386, result has 60.1 percent of original size [2021-06-07 04:28:14,042 INFO L550 ElimStorePlain]: Start of recursive call 1: 9 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-06-07 04:28:14,042 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 10 variables, input treesize:147, output treesize:150 [2021-06-07 04:28:16,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-07 04:28:16,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-07 04:28:16,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-07 04:28:16,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-07 04:28:16,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-07 04:28:16,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-07 04:28:16,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-07 04:28:16,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-07 04:28:16,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-07 04:28:16,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-07 04:28:16,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-07 04:28:16,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-07 04:28:16,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-07 04:28:16,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-07 04:28:16,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-07 04:28:16,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-07 04:28:16,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-07 04:28:16,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-07 04:28:16,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-07 04:28:16,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-07 04:28:16,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-07 04:28:16,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-07 04:28:16,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-07 04:28:16,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-07 04:28:16,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-07 04:28:16,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-07 04:28:16,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-07 04:28:16,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-07 04:28:16,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-07 04:28:16,043 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-07 04:28:16,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-07 04:28:16,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-07 04:28:16,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-07 04:28:16,046 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-07 04:28:16,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-07 04:28:16,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-07 04:28:16,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-07 04:28:16,049 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 28 disjoint index pairs (out of 45 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 28 [2021-06-07 04:28:16,051 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-07 04:28:16,056 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-07 04:28:16,057 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-07 04:28:16,057 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:101, output treesize:5 [2021-06-07 04:28:16,069 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 94 proven. 291 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-07 04:28:16,069 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2102058193] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 04:28:16,069 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-07 04:28:16,069 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 50] total 79 [2021-06-07 04:28:16,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637856303] [2021-06-07 04:28:16,070 INFO L462 AbstractCegarLoop]: Interpolant automaton has 80 states [2021-06-07 04:28:16,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-07 04:28:16,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2021-06-07 04:28:16,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=745, Invalid=5556, Unknown=19, NotChecked=0, Total=6320 [2021-06-07 04:28:16,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-07 04:28:16,073 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-07 04:28:16,073 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 80 states, 80 states have (on average 1.85) internal successors, (148), 79 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-07 04:28:16,073 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 04:28:16,073 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 04:28:16,073 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-07 04:28:16,073 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-07 04:28:16,073 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-06-07 04:28:16,073 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-06-07 04:28:16,074 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-07 04:28:24,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 04:28:24,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 04:28:24,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-07 04:28:24,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-07 04:28:24,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-07 04:28:24,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-07 04:28:24,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-07 04:28:24,520 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-07 04:28:24,521 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-07 04:28:24,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-07 04:28:24,521 INFO L82 PathProgramCache]: Analyzing trace with hash 1534868657, now seen corresponding path program 5 times [2021-06-07 04:28:24,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-07 04:28:24,521 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529757428] [2021-06-07 04:28:24,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-07 04:28:24,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-07 04:28:24,625 INFO L134 CoverageAnalysis]: Checked inductivity of 573 backedges. 226 proven. 144 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2021-06-07 04:28:24,625 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-07 04:28:24,625 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529757428] [2021-06-07 04:28:24,625 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529757428] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 04:28:24,625 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423320518] [2021-06-07 04:28:24,626 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-07 04:28:24,689 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2021-06-07 04:28:24,689 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-07 04:28:24,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 21 conjunts are in the unsatisfiable core [2021-06-07 04:28:24,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-07 04:28:24,859 INFO L134 CoverageAnalysis]: Checked inductivity of 573 backedges. 261 proven. 106 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2021-06-07 04:28:24,859 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [423320518] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 04:28:24,859 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-07 04:28:24,859 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 7 [2021-06-07 04:28:24,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691732927] [2021-06-07 04:28:24,861 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-07 04:28:24,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-07 04:28:24,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-07 04:28:24,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-07 04:28:24,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-07 04:28:24,862 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-07 04:28:24,862 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-07 04:28:24,862 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 04:28:24,862 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 04:28:24,862 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-07 04:28:24,862 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-07 04:28:24,863 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-06-07 04:28:24,863 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-06-07 04:28:24,863 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 28 states. [2021-06-07 04:28:24,863 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-07 04:28:24,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 04:28:24,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 04:28:24,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-07 04:28:24,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-07 04:28:24,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-07 04:28:24,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-07 04:28:24,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-07 04:28:24,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-07 04:28:25,129 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable169 [2021-06-07 04:28:25,129 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-07 04:28:25,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-07 04:28:25,129 INFO L82 PathProgramCache]: Analyzing trace with hash 1703259790, now seen corresponding path program 6 times [2021-06-07 04:28:25,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-07 04:28:25,130 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647802137] [2021-06-07 04:28:25,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-07 04:28:25,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-07 04:28:26,443 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 13 proven. 462 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2021-06-07 04:28:26,444 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-07 04:28:26,444 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647802137] [2021-06-07 04:28:26,444 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647802137] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 04:28:26,444 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1763282217] [2021-06-07 04:28:26,444 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-07 04:28:26,522 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-06-07 04:28:26,522 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-07 04:28:26,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 118 conjunts are in the unsatisfiable core [2021-06-07 04:28:26,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-07 04:28:45,156 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2021-06-07 04:29:00,416 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2021-06-07 04:30:12,793 WARN L227 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2021-06-07 04:30:12,794 WARN L348 FreeRefinementEngine]: Global settings require throwing the following exception [2021-06-07 04:30:12,995 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-07 04:30:12,996 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:241) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:258) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:138) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:934) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:773) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:345) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:305) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:582) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:440) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:201) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:299) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:297) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:190) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:180) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:643) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:374) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:69) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:63) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:364) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:293) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:238) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1461) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:654) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:238) ... 46 more [2021-06-07 04:30:13,001 INFO L168 Benchmark]: Toolchain (without parser) took 269482.05 ms. Allocated memory was 346.0 MB in the beginning and 415.2 MB in the end (delta: 69.2 MB). Free memory was 326.0 MB in the beginning and 158.9 MB in the end (delta: 167.2 MB). Peak memory consumption was 239.4 MB. Max. memory is 16.0 GB. [2021-06-07 04:30:13,001 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.13 ms. Allocated memory is still 346.0 MB. Free memory was 327.2 MB in the beginning and 327.2 MB in the end (delta: 70.3 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-07 04:30:13,001 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.55 ms. Allocated memory is still 346.0 MB. Free memory was 326.0 MB in the beginning and 324.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-07 04:30:13,001 INFO L168 Benchmark]: Boogie Preprocessor took 15.37 ms. Allocated memory is still 346.0 MB. Free memory was 324.6 MB in the beginning and 323.6 MB in the end (delta: 990.5 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-07 04:30:13,001 INFO L168 Benchmark]: RCFGBuilder took 301.40 ms. Allocated memory is still 346.0 MB. Free memory was 323.5 MB in the beginning and 310.5 MB in the end (delta: 13.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-06-07 04:30:13,002 INFO L168 Benchmark]: TraceAbstraction took 269136.41 ms. Allocated memory was 346.0 MB in the beginning and 415.2 MB in the end (delta: 69.2 MB). Free memory was 310.0 MB in the beginning and 158.9 MB in the end (delta: 151.2 MB). Peak memory consumption was 222.7 MB. Max. memory is 16.0 GB. [2021-06-07 04:30:13,002 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.13 ms. Allocated memory is still 346.0 MB. Free memory was 327.2 MB in the beginning and 327.2 MB in the end (delta: 70.3 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 23.55 ms. Allocated memory is still 346.0 MB. Free memory was 326.0 MB in the beginning and 324.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 15.37 ms. Allocated memory is still 346.0 MB. Free memory was 324.6 MB in the beginning and 323.6 MB in the end (delta: 990.5 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 301.40 ms. Allocated memory is still 346.0 MB. Free memory was 323.5 MB in the beginning and 310.5 MB in the end (delta: 13.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * TraceAbstraction took 269136.41 ms. Allocated memory was 346.0 MB in the beginning and 415.2 MB in the end (delta: 69.2 MB). Free memory was 310.0 MB in the beginning and 158.9 MB in the end (delta: 151.2 MB). Peak memory consumption was 222.7 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:241) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...