/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-NewStatesSleep-NoLbe-Symm.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/bench/exp2x4.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-98196c323137eee61a7c1131837b356358d783d4-98196c3 [2021-06-16 20:31:19,518 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-16 20:31:19,520 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-16 20:31:19,551 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-16 20:31:19,578 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-16 20:31:19,580 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-16 20:31:19,581 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-16 20:31:19,583 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-16 20:31:19,586 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-16 20:31:19,587 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-16 20:31:19,589 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-16 20:31:19,596 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-16 20:31:19,597 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-16 20:31:19,599 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-16 20:31:19,599 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-16 20:31:19,602 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-16 20:31:19,608 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-16 20:31:19,644 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-NewStatesSleep-NoLbe-Symm.epf [2021-06-16 20:31:19,680 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-16 20:31:19,680 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-16 20:31:19,681 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-16 20:31:19,681 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-16 20:31:19,683 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-16 20:31:19,683 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-16 20:31:19,684 INFO L138 SettingsManager]: * Use SBE=true [2021-06-16 20:31:19,684 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-16 20:31:19,684 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-16 20:31:19,684 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-16 20:31:19,685 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-16 20:31:19,685 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-16 20:31:19,685 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-16 20:31:19,685 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-16 20:31:19,686 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-16 20:31:19,686 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-16 20:31:19,686 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-16 20:31:19,686 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-16 20:31:19,686 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-16 20:31:19,686 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-16 20:31:19,686 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-16 20:31:19,687 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-16 20:31:19,687 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-16 20:31:19,687 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-16 20:31:19,687 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-16 20:31:19,687 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-16 20:31:19,687 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-16 20:31:19,687 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-16 20:31:19,688 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-16 20:31:19,688 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-16 20:31:19,688 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-06-16 20:31:19,688 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-16 20:31:19,688 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2021-06-16 20:31:19,688 INFO L138 SettingsManager]: * Limit POR to symmetric independence in concurrent analysis=true [2021-06-16 20:31:19,689 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-16 20:31:20,019 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-16 20:31:20,043 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-16 20:31:20,046 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-16 20:31:20,047 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-16 20:31:20,048 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-16 20:31:20,048 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/bench/exp2x4.wvr.bpl [2021-06-16 20:31:20,049 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/bench/exp2x4.wvr.bpl' [2021-06-16 20:31:20,086 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-16 20:31:20,088 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-16 20:31:20,093 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-16 20:31:20,093 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-16 20:31:20,093 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-16 20:31:20,105 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "exp2x4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 08:31:20" (1/1) ... [2021-06-16 20:31:20,113 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "exp2x4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 08:31:20" (1/1) ... [2021-06-16 20:31:20,120 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-16 20:31:20,122 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-16 20:31:20,122 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-16 20:31:20,122 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-16 20:31:20,129 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "exp2x4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 08:31:20" (1/1) ... [2021-06-16 20:31:20,130 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "exp2x4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 08:31:20" (1/1) ... [2021-06-16 20:31:20,131 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "exp2x4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 08:31:20" (1/1) ... [2021-06-16 20:31:20,132 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "exp2x4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 08:31:20" (1/1) ... [2021-06-16 20:31:20,135 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "exp2x4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 08:31:20" (1/1) ... [2021-06-16 20:31:20,140 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "exp2x4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 08:31:20" (1/1) ... [2021-06-16 20:31:20,140 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "exp2x4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 08:31:20" (1/1) ... [2021-06-16 20:31:20,143 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-16 20:31:20,145 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-16 20:31:20,145 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-16 20:31:20,145 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-16 20:31:20,146 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "exp2x4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 08:31:20" (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 [2021-06-16 20:31:20,223 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-16 20:31:20,224 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-16 20:31:20,224 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-16 20:31:20,224 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-16 20:31:20,224 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-16 20:31:20,224 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-16 20:31:20,224 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-16 20:31:20,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-16 20:31:20,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-16 20:31:20,225 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-16 20:31:20,225 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-16 20:31:20,225 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-16 20:31:20,225 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-06-16 20:31:20,225 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-06-16 20:31:20,225 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-06-16 20:31:20,226 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-16 20:31:20,391 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-16 20:31:20,391 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-16 20:31:20,393 INFO L202 PluginConnector]: Adding new model exp2x4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.06 08:31:20 BoogieIcfgContainer [2021-06-16 20:31:20,393 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-16 20:31:20,395 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-16 20:31:20,395 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-16 20:31:20,397 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-16 20:31:20,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "exp2x4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 08:31:20" (1/2) ... [2021-06-16 20:31:20,398 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f77864 and model type exp2x4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.06 08:31:20, skipping insertion in model container [2021-06-16 20:31:20,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "exp2x4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.06 08:31:20" (2/2) ... [2021-06-16 20:31:20,400 INFO L111 eAbstractionObserver]: Analyzing ICFG exp2x4.wvr.bpl [2021-06-16 20:31:20,405 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-16 20:31:20,405 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-16 20:31:20,405 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-16 20:31:20,406 INFO L470 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-16 20:31:20,454 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-06-16 20:31:20,473 INFO L255 AbstractCegarLoop]: Starting to check reachability of 5 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 [2021-06-16 20:31:20,605 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-16 20:31:20,605 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-16 20:31:20,605 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-16 20:31:20,606 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-16 20:31:20,606 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-16 20:31:20,606 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-16 20:31:20,606 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-16 20:31:20,606 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-16 20:31:20,754 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 20:31:20,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 20:31:20,762 INFO L82 PathProgramCache]: Analyzing trace with hash 576764032, now seen corresponding path program 1 times [2021-06-16 20:31:20,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 20:31:20,770 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458562547] [2021-06-16 20:31:20,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 20:31:20,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 20:31:21,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 20:31:21,006 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 20:31:21,006 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458562547] [2021-06-16 20:31:21,007 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458562547] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 20:31:21,008 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 20:31:21,008 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-16 20:31:21,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611107924] [2021-06-16 20:31:21,013 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-16 20:31:21,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 20:31:21,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-16 20:31:21,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-16 20:31:21,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-16 20:31:21,036 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-16 20:31:21,040 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 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) [2021-06-16 20:31:21,040 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-16 20:31:21,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-16 20:31:21,131 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-16 20:31:21,132 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 20:31:21,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 20:31:21,136 INFO L82 PathProgramCache]: Analyzing trace with hash 1942678282, now seen corresponding path program 1 times [2021-06-16 20:31:21,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 20:31:21,137 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094848774] [2021-06-16 20:31:21,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 20:31:21,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 20:31:21,182 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 20:31:21,183 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 20:31:21,183 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094848774] [2021-06-16 20:31:21,183 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094848774] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-16 20:31:21,184 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1837578988] [2021-06-16 20:31:21,184 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 [2021-06-16 20:31:21,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 20:31:21,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 3 conjunts are in the unsatisfiable core [2021-06-16 20:31:21,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-16 20:31:21,335 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 20:31:21,335 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1837578988] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-16 20:31:21,336 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-16 20:31:21,336 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-06-16 20:31:21,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981752605] [2021-06-16 20:31:21,337 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-16 20:31:21,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 20:31:21,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-16 20:31:21,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-16 20:31:21,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-16 20:31:21,338 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-16 20:31:21,339 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 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) [2021-06-16 20:31:21,339 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-16 20:31:21,339 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-16 20:31:21,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-16 20:31:21,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-16 20:31:21,653 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-16 20:31:21,653 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 20:31:21,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 20:31:21,654 INFO L82 PathProgramCache]: Analyzing trace with hash -198617953, now seen corresponding path program 1 times [2021-06-16 20:31:21,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 20:31:21,655 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392336823] [2021-06-16 20:31:21,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 20:31:21,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 20:31:21,785 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 20:31:21,785 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 20:31:21,785 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392336823] [2021-06-16 20:31:21,786 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392336823] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-16 20:31:21,786 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431052608] [2021-06-16 20:31:21,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2021-06-16 20:31:21,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 20:31:21,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 13 conjunts are in the unsatisfiable core [2021-06-16 20:31:21,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-16 20:31:22,191 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 20:31:22,192 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431052608] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-16 20:31:22,192 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-16 20:31:22,192 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6] total 6 [2021-06-16 20:31:22,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37404965] [2021-06-16 20:31:22,195 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-16 20:31:22,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 20:31:22,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-16 20:31:22,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-06-16 20:31:22,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-16 20:31:22,197 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-16 20:31:22,198 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 6 states have internal predecessors, (40), 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) [2021-06-16 20:31:22,198 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-16 20:31:22,198 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-16 20:31:22,198 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-16 20:31:22,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-16 20:31:22,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-16 20:31:22,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-16 20:31:22,494 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-16 20:31:22,495 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 20:31:22,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 20:31:22,495 INFO L82 PathProgramCache]: Analyzing trace with hash -1983776855, now seen corresponding path program 2 times [2021-06-16 20:31:22,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 20:31:22,496 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195109573] [2021-06-16 20:31:22,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 20:31:22,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 20:31:22,560 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 20:31:22,560 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 20:31:22,560 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195109573] [2021-06-16 20:31:22,560 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195109573] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-16 20:31:22,561 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331072117] [2021-06-16 20:31:22,561 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 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 [2021-06-16 20:31:22,606 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-16 20:31:22,606 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-16 20:31:22,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-16 20:31:22,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-16 20:31:22,776 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 20:31:22,776 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331072117] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-16 20:31:22,776 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-16 20:31:22,776 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-06-16 20:31:22,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11497749] [2021-06-16 20:31:22,777 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-16 20:31:22,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 20:31:22,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-16 20:31:22,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-06-16 20:31:22,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-16 20:31:22,779 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-16 20:31:22,779 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 9 states have internal predecessors, (31), 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) [2021-06-16 20:31:22,779 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-16 20:31:22,779 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-16 20:31:22,779 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-16 20:31:22,779 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-16 20:31:23,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-16 20:31:23,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-16 20:31:23,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-16 20:31:23,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-16 20:31:23,356 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-16 20:31:23,357 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 20:31:23,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 20:31:23,358 INFO L82 PathProgramCache]: Analyzing trace with hash 210702240, now seen corresponding path program 3 times [2021-06-16 20:31:23,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 20:31:23,358 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698933791] [2021-06-16 20:31:23,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 20:31:23,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 20:31:23,509 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 20:31:23,509 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 20:31:23,510 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698933791] [2021-06-16 20:31:23,510 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698933791] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-16 20:31:23,510 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741456699] [2021-06-16 20:31:23,510 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 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 [2021-06-16 20:31:23,554 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-16 20:31:23,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-16 20:31:23,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 21 conjunts are in the unsatisfiable core [2021-06-16 20:31:23,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown