/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.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-5.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9bbddad6b14272d9691b7fb6f1c011d15ab18596-9bbddad [2021-06-13 16:09:51,683 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-13 16:09:51,685 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-13 16:09:51,714 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-13 16:09:51,730 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-13 16:09:51,732 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-13 16:09:51,733 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-13 16:09:51,734 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-13 16:09:51,736 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-13 16:09:51,736 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-13 16:09:51,738 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-13 16:09:51,742 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-13 16:09:51,743 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-13 16:09:51,744 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-13 16:09:51,745 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-13 16:09:51,746 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-13 16:09:51,751 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-13 16:09:51,762 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.epf [2021-06-13 16:09:51,810 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-13 16:09:51,810 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-13 16:09:51,810 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-13 16:09:51,811 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-13 16:09:51,812 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-13 16:09:51,813 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-13 16:09:51,813 INFO L138 SettingsManager]: * Use SBE=true [2021-06-13 16:09:51,813 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-13 16:09:51,813 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-13 16:09:51,813 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-13 16:09:51,814 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-13 16:09:51,814 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-13 16:09:51,814 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-13 16:09:51,814 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-13 16:09:51,814 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-13 16:09:51,814 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-13 16:09:51,814 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-13 16:09:51,815 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-13 16:09:51,815 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-13 16:09:51,815 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-13 16:09:51,815 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-13 16:09:51,815 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-13 16:09:51,815 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-13 16:09:51,815 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-13 16:09:51,815 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-13 16:09:51,815 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-13 16:09:51,815 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-13 16:09:51,816 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-13 16:09:51,816 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-13 16:09:51,816 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-13 16:09:51,816 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-06-13 16:09:51,816 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-13 16:09:51,816 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2021-06-13 16:09:51,816 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-13 16:09:52,113 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-13 16:09:52,142 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-13 16:09:52,144 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-13 16:09:52,145 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-13 16:09:52,146 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-13 16:09:52,146 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-5.wvr.bpl [2021-06-13 16:09:52,147 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-5.wvr.bpl' [2021-06-13 16:09:52,183 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-13 16:09:52,184 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-13 16:09:52,185 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-13 16:09:52,185 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-13 16:09:52,185 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-13 16:09:52,214 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 04:09:52" (1/1) ... [2021-06-13 16:09:52,219 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 04:09:52" (1/1) ... [2021-06-13 16:09:52,225 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-13 16:09:52,249 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-13 16:09:52,250 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-13 16:09:52,250 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-13 16:09:52,255 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 04:09:52" (1/1) ... [2021-06-13 16:09:52,255 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 04:09:52" (1/1) ... [2021-06-13 16:09:52,256 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 04:09:52" (1/1) ... [2021-06-13 16:09:52,256 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 04:09:52" (1/1) ... [2021-06-13 16:09:52,259 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 04:09:52" (1/1) ... [2021-06-13 16:09:52,261 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 04:09:52" (1/1) ... [2021-06-13 16:09:52,262 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 04:09:52" (1/1) ... [2021-06-13 16:09:52,263 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-13 16:09:52,265 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-13 16:09:52,265 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-13 16:09:52,265 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-13 16:09:52,266 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 04:09:52" (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 [2021-06-13 16:09:52,320 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-13 16:09:52,320 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-13 16:09:52,320 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-13 16:09:52,320 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-13 16:09:52,320 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-13 16:09:52,320 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-13 16:09:52,320 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-13 16:09:52,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-13 16:09:52,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-13 16:09:52,321 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-13 16:09:52,321 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-13 16:09:52,321 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-13 16:09:52,322 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-13 16:09:52,470 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-13 16:09:52,471 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-13 16:09:52,472 INFO L202 PluginConnector]: Adding new model misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 04:09:52 BoogieIcfgContainer [2021-06-13 16:09:52,472 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-13 16:09:52,473 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-13 16:09:52,473 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-13 16:09:52,475 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-13 16:09:52,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 04:09:52" (1/2) ... [2021-06-13 16:09:52,476 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50a4dcaa and model type misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.06 04:09:52, skipping insertion in model container [2021-06-13 16:09:52,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 04:09:52" (2/2) ... [2021-06-13 16:09:52,477 INFO L111 eAbstractionObserver]: Analyzing ICFG misc-5.wvr.bpl [2021-06-13 16:09:52,480 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-13 16:09:52,480 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-13 16:09:52,480 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-13 16:09:52,481 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-13 16:09:52,505 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-06-13 16:09:52,519 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-06-13 16:09:52,612 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-13 16:09:52,613 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-13 16:09:52,613 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-13 16:09:52,613 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-13 16:09:52,613 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-13 16:09:52,613 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-13 16:09:52,613 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-13 16:09:52,613 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-13 16:09:52,733 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 16:09:52,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 16:09:52,737 INFO L82 PathProgramCache]: Analyzing trace with hash -124964664, now seen corresponding path program 1 times [2021-06-13 16:09:52,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 16:09:52,742 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078191202] [2021-06-13 16:09:52,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 16:09:52,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 16:09:52,852 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 16:09:52,853 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 16:09:52,853 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078191202] [2021-06-13 16:09:52,854 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078191202] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 16:09:52,854 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625886590] [2021-06-13 16:09:52,854 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 [2021-06-13 16:09:52,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 16:09:52,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 3 conjunts are in the unsatisfiable core [2021-06-13 16:09:52,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-13 16:09:52,989 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 16:09:52,989 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1625886590] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 16:09:52,989 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-13 16:09:52,990 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-06-13 16:09:52,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509642289] [2021-06-13 16:09:52,998 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-13 16:09:52,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 16:09:53,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-13 16:09:53,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-13 16:09:53,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-13 16:09:53,010 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-13 16:09:53,011 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 16:09:53,011 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-13 16:09:53,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-13 16:09:53,257 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-06-13 16:09:53,257 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 16:09:53,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 16:09:53,258 INFO L82 PathProgramCache]: Analyzing trace with hash 435101322, now seen corresponding path program 2 times [2021-06-13 16:09:53,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 16:09:53,258 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562982926] [2021-06-13 16:09:53,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 16:09:53,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 16:09:53,296 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 16:09:53,296 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 16:09:53,296 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562982926] [2021-06-13 16:09:53,296 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562982926] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 16:09:53,297 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839725977] [2021-06-13 16:09:53,297 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 [2021-06-13 16:09:53,322 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-13 16:09:53,322 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-13 16:09:53,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 6 conjunts are in the unsatisfiable core [2021-06-13 16:09:53,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-13 16:09:53,374 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 16:09:53,374 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1839725977] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 16:09:53,374 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-13 16:09:53,374 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-06-13 16:09:53,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693402914] [2021-06-13 16:09:53,375 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 16:09:53,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 16:09:53,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 16:09:53,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-06-13 16:09:53,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-13 16:09:53,376 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-13 16:09:53,376 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 16:09:53,376 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-13 16:09:53,376 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-13 16:09:53,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-13 16:09:53,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-13 16:09:53,634 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-13 16:09:53,635 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 16:09:53,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 16:09:53,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1787601868, now seen corresponding path program 3 times [2021-06-13 16:09:53,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 16:09:53,636 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792825870] [2021-06-13 16:09:53,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 16:09:53,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 16:09:53,701 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 16:09:53,702 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 16:09:53,702 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792825870] [2021-06-13 16:09:53,702 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792825870] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 16:09:53,702 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039148525] [2021-06-13 16:09:53,702 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 [2021-06-13 16:09:53,737 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-13 16:09:53,737 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-13 16:09:53,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-13 16:09:53,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-13 16:09:53,828 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 16:09:53,828 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2039148525] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 16:09:53,828 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-13 16:09:53,828 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-06-13 16:09:53,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111953931] [2021-06-13 16:09:53,829 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-13 16:09:53,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 16:09:53,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-13 16:09:53,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-06-13 16:09:53,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-13 16:09:53,829 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-13 16:09:53,830 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 8 states have internal predecessors, (33), 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) [2021-06-13 16:09:53,830 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-13 16:09:53,830 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-13 16:09:53,830 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-13 16:09:53,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-13 16:09:53,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-13 16:09:53,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-13 16:09:54,090 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-13 16:09:54,090 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 16:09:54,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 16:09:54,091 INFO L82 PathProgramCache]: Analyzing trace with hash 165535886, now seen corresponding path program 4 times [2021-06-13 16:09:54,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 16:09:54,091 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182134369] [2021-06-13 16:09:54,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 16:09:54,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 16:09:54,178 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 16:09:54,178 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 16:09:54,178 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182134369] [2021-06-13 16:09:54,178 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182134369] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 16:09:54,178 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097252226] [2021-06-13 16:09:54,178 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 [2021-06-13 16:09:54,212 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-13 16:09:54,212 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-13 16:09:54,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-13 16:09:54,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-13 16:09:54,323 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 16:09:54,323 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097252226] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 16:09:54,324 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-13 16:09:54,324 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-06-13 16:09:54,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959155068] [2021-06-13 16:09:54,325 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-13 16:09:54,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 16:09:54,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-13 16:09:54,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-06-13 16:09:54,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-13 16:09:54,325 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-13 16:09:54,326 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 10 states have internal predecessors, (37), 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) [2021-06-13 16:09:54,326 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-13 16:09:54,326 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-13 16:09:54,326 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-13 16:09:54,326 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-13 16:09:54,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-13 16:09:54,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-13 16:09:54,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-13 16:09:54,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-13 16:09:54,629 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-06-13 16:09:54,630 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 16:09:54,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 16:09:54,630 INFO L82 PathProgramCache]: Analyzing trace with hash 433255632, now seen corresponding path program 5 times [2021-06-13 16:09:54,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 16:09:54,630 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092923714] [2021-06-13 16:09:54,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 16:09:54,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 16:09:54,702 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 16:09:54,703 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 16:09:54,703 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092923714] [2021-06-13 16:09:54,703 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092923714] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 16:09:54,703 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733044470] [2021-06-13 16:09:54,703 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 [2021-06-13 16:09:54,739 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-06-13 16:09:54,739 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-13 16:09:54,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-13 16:09:54,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-13 16:09:54,882 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 16:09:54,883 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733044470] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 16:09:54,883 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-13 16:09:54,883 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-06-13 16:09:54,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264172271] [2021-06-13 16:09:54,883 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-13 16:09:54,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 16:09:54,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-13 16:09:54,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-06-13 16:09:54,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-13 16:09:54,884 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-13 16:09:54,884 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 12 states have internal predecessors, (41), 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) [2021-06-13 16:09:54,884 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-13 16:09:54,884 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-13 16:09:54,884 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-13 16:09:54,884 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-06-13 16:09:54,884 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-13 16:09:55,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-13 16:09:55,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-13 16:09:55,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-13 16:09:55,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-13 16:09:55,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 16:09:55,264 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-13 16:09:55,265 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 16:09:55,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 16:09:55,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1341292182, now seen corresponding path program 6 times [2021-06-13 16:09:55,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 16:09:55,265 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804638148] [2021-06-13 16:09:55,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 16:09:55,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 16:09:55,521 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 1 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 16:09:55,521 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 16:09:55,521 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804638148] [2021-06-13 16:09:55,521 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804638148] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 16:09:55,521 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [441494465] [2021-06-13 16:09:55,521 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 [2021-06-13 16:09:55,554 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-06-13 16:09:55,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-13 16:09:55,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-13 16:09:55,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-13 16:09:55,862 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 1 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 16:09:55,863 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [441494465] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 16:09:55,863 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-13 16:09:55,863 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-06-13 16:09:55,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137348426] [2021-06-13 16:09:55,863 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-13 16:09:55,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 16:09:55,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-13 16:09:55,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2021-06-13 16:09:55,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-13 16:09:55,864 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-13 16:09:55,864 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.789473684210526) internal successors, (53), 18 states have internal predecessors, (53), 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) [2021-06-13 16:09:55,864 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-13 16:09:55,864 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-13 16:09:55,864 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-13 16:09:55,865 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-06-13 16:09:55,865 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-06-13 16:09:55,865 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-13 16:09:56,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-13 16:09:56,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-13 16:09:56,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-13 16:09:56,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-13 16:09:56,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 16:09:56,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-13 16:09:56,424 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-06-13 16:09:56,425 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 16:09:56,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 16:09:56,425 INFO L82 PathProgramCache]: Analyzing trace with hash 1385765852, now seen corresponding path program 7 times [2021-06-13 16:09:56,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 16:09:56,425 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61099766] [2021-06-13 16:09:56,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 16:09:56,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 16:09:58,816 WARN L205 SmtUtils]: Spent 2.11 s on a formula simplification. DAG size of input: 90 DAG size of output: 19 [2021-06-13 16:10:15,873 WARN L205 SmtUtils]: Spent 17.02 s on a formula simplification. DAG size of input: 143 DAG size of output: 30 [2021-06-13 16:12:16,409 WARN L205 SmtUtils]: Spent 2.01 m on a formula simplification. DAG size of input: 172 DAG size of output: 39 [2021-06-13 16:14:52,768 WARN L205 SmtUtils]: Spent 2.60 m on a formula simplification. DAG size of input: 183 DAG size of output: 14 [2021-06-13 16:17:50,345 WARN L205 SmtUtils]: Spent 2.96 m on a formula simplification. DAG size of input: 192 DAG size of output: 13 [2021-06-13 16:18:17,128 WARN L205 SmtUtils]: Spent 26.77 s on a formula simplification. DAG size of input: 144 DAG size of output: 15 [2021-06-13 16:18:17,711 WARN L205 SmtUtils]: Spent 555.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 10 [2021-06-13 16:18:18,356 WARN L205 SmtUtils]: Spent 631.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 13 [2021-06-13 16:18:18,399 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 1 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 16:18:18,399 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 16:18:18,400 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61099766] [2021-06-13 16:18:18,400 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61099766] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 16:18:18,400 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987528527] [2021-06-13 16:18:18,400 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-13 16:18:18,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 16:18:18,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 15 conjunts are in the unsatisfiable core [2021-06-13 16:18:18,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-13 16:18:18,887 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 1 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 16:18:18,887 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1987528527] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 16:18:18,887 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-13 16:18:18,887 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2021-06-13 16:18:18,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304586267] [2021-06-13 16:18:18,887 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-13 16:18:18,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 16:18:18,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-13 16:18:18,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=463, Unknown=0, NotChecked=0, Total=600 [2021-06-13 16:18:18,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-13 16:18:18,888 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-13 16:18:18,888 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 2.6) internal successors, (65), 24 states have internal predecessors, (65), 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) [2021-06-13 16:18:18,889 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-13 16:18:18,889 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-13 16:18:18,889 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-13 16:18:18,889 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-06-13 16:18:18,889 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-06-13 16:18:18,889 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-13 16:18:18,889 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-13 16:18:19,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-13 16:18:19,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-13 16:18:19,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-13 16:18:19,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-13 16:18:19,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 16:18:19,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-13 16:18:19,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-13 16:18:19,816 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-13 16:18:19,817 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 16:18:19,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 16:18:19,817 INFO L82 PathProgramCache]: Analyzing trace with hash 454304422, now seen corresponding path program 8 times [2021-06-13 16:18:19,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 16:18:19,817 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18052022] [2021-06-13 16:18:19,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 16:18:20,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown