/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-Sleep-NoLbe-New_States.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-5.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-12 17:00:50,573 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-12 17:00:50,574 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-12 17:00:50,593 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-12 17:00:50,600 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-12 17:00:50,601 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-12 17:00:50,601 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-12 17:00:50,602 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-12 17:00:50,603 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-12 17:00:50,603 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-12 17:00:50,604 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-12 17:00:50,606 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-12 17:00:50,607 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-12 17:00:50,608 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-12 17:00:50,608 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-12 17:00:50,609 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-12 17:00:50,611 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-12 17:00:50,618 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-Sleep-NoLbe-New_States.epf [2021-03-12 17:00:50,634 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-12 17:00:50,634 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-12 17:00:50,634 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-03-12 17:00:50,635 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-03-12 17:00:50,636 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-12 17:00:50,636 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-12 17:00:50,636 INFO L138 SettingsManager]: * Use SBE=true [2021-03-12 17:00:50,636 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-12 17:00:50,636 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-12 17:00:50,636 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-12 17:00:50,636 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-12 17:00:50,637 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-12 17:00:50,637 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-12 17:00:50,637 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-12 17:00:50,637 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-12 17:00:50,637 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-12 17:00:50,637 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-12 17:00:50,637 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-12 17:00:50,638 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-12 17:00:50,638 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-12 17:00:50,638 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-12 17:00:50,638 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-12 17:00:50,638 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-12 17:00:50,638 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-12 17:00:50,639 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-12 17:00:50,639 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-12 17:00:50,639 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-12 17:00:50,639 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-12 17:00:50,639 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-12 17:00:50,639 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-03-12 17:00:50,639 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-03-12 17:00:50,639 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-12 17:00:50,640 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2021-03-12 17:00:50,640 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-12 17:00:50,880 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-12 17:00:50,899 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-12 17:00:50,901 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-12 17:00:50,902 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-12 17:00:50,903 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-12 17:00:50,903 INFO L432 ainManager$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 [2021-03-12 17:00:50,904 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-5.wvr.bpl' [2021-03-12 17:00:50,969 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-12 17:00:50,974 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-12 17:00:50,975 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-12 17:00:50,975 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-12 17:00:50,975 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-12 17:00:50,984 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 12.03 05:00:50" (1/1) ... [2021-03-12 17:00:50,991 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 12.03 05:00:50" (1/1) ... [2021-03-12 17:00:50,996 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-12 17:00:50,999 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-12 17:00:50,999 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-12 17:00:50,999 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-12 17:00:51,004 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 05:00:50" (1/1) ... [2021-03-12 17:00:51,005 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 05:00:50" (1/1) ... [2021-03-12 17:00:51,006 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 05:00:50" (1/1) ... [2021-03-12 17:00:51,006 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 05:00:50" (1/1) ... [2021-03-12 17:00:51,010 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 05:00:50" (1/1) ... [2021-03-12 17:00:51,013 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 05:00:50" (1/1) ... [2021-03-12 17:00:51,013 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 05:00:50" (1/1) ... [2021-03-12 17:00:51,014 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-12 17:00:51,014 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-12 17:00:51,014 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-12 17:00:51,015 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-12 17:00:51,015 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 05:00:50" (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 [2021-03-12 17:00:51,076 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-03-12 17:00:51,077 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-12 17:00:51,077 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-12 17:00:51,077 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-03-12 17:00:51,077 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-12 17:00:51,077 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-12 17:00:51,078 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-12 17:00:51,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-12 17:00:51,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-12 17:00:51,078 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-03-12 17:00:51,079 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-03-12 17:00:51,079 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-03-12 17:00:51,080 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-12 17:00:51,283 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-12 17:00:51,283 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-12 17:00:51,284 INFO L202 PluginConnector]: Adding new model misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.03 05:00:51 BoogieIcfgContainer [2021-03-12 17:00:51,284 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-12 17:00:51,296 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-12 17:00:51,296 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-12 17:00:51,299 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-12 17:00:51,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 05:00:50" (1/2) ... [2021-03-12 17:00:51,299 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78ac5c97 and model type misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.03 05:00:51, skipping insertion in model container [2021-03-12 17:00:51,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.03 05:00:51" (2/2) ... [2021-03-12 17:00:51,301 INFO L111 eAbstractionObserver]: Analyzing ICFG misc-5.wvr.bpl [2021-03-12 17:00:51,304 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-12 17:00:51,304 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-12 17:00:51,307 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-12 17:00:51,307 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-12 17:00:51,344 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-03-12 17:00:51,356 INFO L253 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 [2021-03-12 17:00:51,389 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-12 17:00:51,389 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-12 17:00:51,389 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-12 17:00:51,389 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-12 17:00:51,389 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-12 17:00:51,389 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-12 17:00:51,389 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-12 17:00:51,389 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-12 17:00:51,460 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 17:00:51,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 17:00:51,464 INFO L82 PathProgramCache]: Analyzing trace with hash -124964664, now seen corresponding path program 1 times [2021-03-12 17:00:51,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 17:00:51,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938639665] [2021-03-12 17:00:51,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 17:00:51,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 17:00:51,559 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 17:00:51,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938639665] [2021-03-12 17:00:51,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001871382] [2021-03-12 17:00:51,560 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 [2021-03-12 17:00:51,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 17:00:51,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 3 conjunts are in the unsatisfiable core [2021-03-12 17:00:51,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-12 17:00:51,678 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 17:00:51,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-12 17:00:51,679 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-03-12 17:00:51,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469918526] [2021-03-12 17:00:51,684 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-12 17:00:51,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 17:00:51,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-12 17:00:51,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-12 17:00:51,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-12 17:00:51,704 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-03-12 17:00:51,706 INFO L481 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) [2021-03-12 17:00:51,706 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-03-12 17:00:51,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-12 17:00:51,970 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-03-12 17:00:51,971 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 17:00:51,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 17:00:51,972 INFO L82 PathProgramCache]: Analyzing trace with hash 435101322, now seen corresponding path program 2 times [2021-03-12 17:00:51,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 17:00:51,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087730165] [2021-03-12 17:00:51,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 17:00:51,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 17:00:52,027 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 17:00:52,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087730165] [2021-03-12 17:00:52,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780846332] [2021-03-12 17:00:52,028 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 [2021-03-12 17:00:52,077 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-12 17:00:52,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-12 17:00:52,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 6 conjunts are in the unsatisfiable core [2021-03-12 17:00:52,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-12 17:00:52,181 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 17:00:52,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-12 17:00:52,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-03-12 17:00:52,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069816823] [2021-03-12 17:00:52,182 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-12 17:00:52,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 17:00:52,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-12 17:00:52,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-03-12 17:00:52,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-12 17:00:52,183 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-03-12 17:00:52,183 INFO L481 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) [2021-03-12 17:00:52,183 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-03-12 17:00:52,184 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-03-12 17:00:52,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-12 17:00:52,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-12 17:00:52,431 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-12 17:00:52,432 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 17:00:52,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 17:00:52,432 INFO L82 PathProgramCache]: Analyzing trace with hash 1787601868, now seen corresponding path program 3 times [2021-03-12 17:00:52,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 17:00:52,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966706543] [2021-03-12 17:00:52,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 17:00:52,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 17:00:52,467 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 17:00:52,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966706543] [2021-03-12 17:00:52,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202217250] [2021-03-12 17:00:52,468 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 [2021-03-12 17:00:52,498 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-03-12 17:00:52,498 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-12 17:00:52,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 7 conjunts are in the unsatisfiable core [2021-03-12 17:00:52,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-12 17:00:52,617 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 17:00:52,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-12 17:00:52,617 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-03-12 17:00:52,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340080118] [2021-03-12 17:00:52,618 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-12 17:00:52,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 17:00:52,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-12 17:00:52,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-03-12 17:00:52,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-12 17:00:52,619 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-03-12 17:00:52,619 INFO L481 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) [2021-03-12 17:00:52,619 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-03-12 17:00:52,619 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-03-12 17:00:52,619 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-03-12 17:00:52,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-12 17:00:52,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-12 17:00:52,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-12 17:00:52,875 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-12 17:00:52,876 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 17:00:52,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 17:00:52,877 INFO L82 PathProgramCache]: Analyzing trace with hash 165535886, now seen corresponding path program 4 times [2021-03-12 17:00:52,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 17:00:52,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87568236] [2021-03-12 17:00:52,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 17:00:52,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 17:00:52,952 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 17:00:52,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87568236] [2021-03-12 17:00:52,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [671115281] [2021-03-12 17:00:52,952 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 [2021-03-12 17:00:52,992 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-12 17:00:52,992 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-12 17:00:52,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 8 conjunts are in the unsatisfiable core [2021-03-12 17:00:52,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-12 17:00:53,159 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 17:00:53,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-12 17:00:53,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-03-12 17:00:53,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071439117] [2021-03-12 17:00:53,160 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-12 17:00:53,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 17:00:53,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-12 17:00:53,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-03-12 17:00:53,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-12 17:00:53,161 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-03-12 17:00:53,161 INFO L481 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) [2021-03-12 17:00:53,161 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-03-12 17:00:53,161 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-03-12 17:00:53,161 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-03-12 17:00:53,162 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-03-12 17:00:53,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-12 17:00:53,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-12 17:00:53,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-12 17:00:53,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-12 17:00:53,459 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-03-12 17:00:53,460 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 17:00:53,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 17:00:53,460 INFO L82 PathProgramCache]: Analyzing trace with hash 433255632, now seen corresponding path program 5 times [2021-03-12 17:00:53,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 17:00:53,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562384051] [2021-03-12 17:00:53,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 17:00:53,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 17:00:53,526 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 17:00:53,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562384051] [2021-03-12 17:00:53,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608337431] [2021-03-12 17:00:53,527 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 [2021-03-12 17:00:53,550 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-03-12 17:00:53,550 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-12 17:00:53,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-12 17:00:53,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-12 17:00:53,695 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 17:00:53,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-12 17:00:53,696 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-03-12 17:00:53,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688981887] [2021-03-12 17:00:53,696 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-03-12 17:00:53,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 17:00:53,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-03-12 17:00:53,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-03-12 17:00:53,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-12 17:00:53,698 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-03-12 17:00:53,698 INFO L481 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) [2021-03-12 17:00:53,698 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-03-12 17:00:53,698 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-03-12 17:00:53,698 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-03-12 17:00:53,698 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-03-12 17:00:53,698 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-03-12 17:00:53,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-12 17:00:53,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-12 17:00:53,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-12 17:00:53,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-12 17:00:53,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-12 17:00:54,078 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-12 17:00:54,078 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 17:00:54,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 17:00:54,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1341292182, now seen corresponding path program 6 times [2021-03-12 17:00:54,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 17:00:54,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087375697] [2021-03-12 17:00:54,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 17:00:54,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 17:00:54,368 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 1 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 17:00:54,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087375697] [2021-03-12 17:00:54,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841303315] [2021-03-12 17:00:54,369 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 [2021-03-12 17:00:54,415 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-03-12 17:00:54,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-12 17:00:54,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 12 conjunts are in the unsatisfiable core [2021-03-12 17:00:54,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-12 17:00:54,729 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 1 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 17:00:54,729 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-12 17:00:54,729 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-03-12 17:00:54,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728381534] [2021-03-12 17:00:54,731 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-12 17:00:54,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 17:00:54,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-12 17:00:54,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2021-03-12 17:00:54,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-12 17:00:54,733 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-03-12 17:00:54,733 INFO L481 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) [2021-03-12 17:00:54,733 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-03-12 17:00:54,733 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-03-12 17:00:54,734 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-03-12 17:00:54,734 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-03-12 17:00:54,734 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-03-12 17:00:54,734 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-03-12 17:00:55,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-12 17:00:55,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-12 17:00:55,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-12 17:00:55,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-12 17:00:55,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-12 17:00:55,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-12 17:00:55,274 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-03-12 17:00:55,275 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 17:00:55,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 17:00:55,275 INFO L82 PathProgramCache]: Analyzing trace with hash 1385765852, now seen corresponding path program 7 times [2021-03-12 17:00:55,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 17:00:55,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257233804] [2021-03-12 17:00:55,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 17:00:55,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 17:00:59,310 WARN L205 SmtUtils]: Spent 3.68 s on a formula simplification. DAG size of input: 87 DAG size of output: 16 [2021-03-12 17:01:02,960 WARN L205 SmtUtils]: Spent 3.63 s on a formula simplification. DAG size of input: 134 DAG size of output: 19 [2021-03-12 17:01:06,766 WARN L205 SmtUtils]: Spent 3.78 s on a formula simplification. DAG size of input: 145 DAG size of output: 25 [2021-03-12 17:01:10,878 WARN L205 SmtUtils]: Spent 4.08 s on a formula simplification. DAG size of input: 149 DAG size of output: 24 [2021-03-12 17:01:20,119 WARN L205 SmtUtils]: Spent 9.19 s on a formula simplification. DAG size of input: 159 DAG size of output: 43 [2021-03-12 17:11:36,915 WARN L205 SmtUtils]: Spent 10.28 m on a formula simplification. DAG size of input: 190 DAG size of output: 65 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown