/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-Persistent-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 [2021-06-14 10:24:56,563 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-14 10:24:56,564 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-14 10:24:56,595 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-14 10:24:56,654 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-Persistent-NoLbe.epf [2021-06-14 10:24:56,709 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-14 10:24:56,709 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-14 10:24:56,710 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-14 10:24:56,710 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-14 10:24:56,712 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-14 10:24:56,712 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-14 10:24:56,712 INFO L138 SettingsManager]: * Use SBE=true [2021-06-14 10:24:56,712 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-14 10:24:56,713 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-14 10:24:56,713 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-14 10:24:56,713 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-14 10:24:56,714 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-14 10:24:56,714 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-14 10:24:56,714 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-14 10:24:56,714 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-14 10:24:56,714 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-14 10:24:56,714 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-14 10:24:56,714 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-14 10:24:56,715 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-14 10:24:56,715 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-14 10:24:56,715 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-14 10:24:56,715 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-14 10:24:56,715 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-14 10:24:56,715 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-14 10:24:56,715 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-14 10:24:56,716 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-14 10:24:56,716 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-14 10:24:56,716 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-14 10:24:56,716 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-14 10:24:56,716 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-14 10:24:56,716 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-06-14 10:24:56,716 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-14 10:24:56,717 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SETS [2021-06-14 10:24:56,717 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-14 10:24:56,972 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-14 10:24:57,001 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-14 10:24:57,003 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-14 10:24:57,003 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-14 10:24:57,004 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-14 10:24:57,005 INFO L432 ainManager$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 [2021-06-14 10:24:57,005 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-5.wvr.bpl' [2021-06-14 10:24:57,033 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-14 10:24:57,034 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-14 10:24:57,035 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-14 10:24:57,035 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-14 10:24:57,035 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-14 10:24:57,045 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 14.06 10:24:57" (1/1) ... [2021-06-14 10:24:57,051 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 14.06 10:24:57" (1/1) ... [2021-06-14 10:24:57,057 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-14 10:24:57,058 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-14 10:24:57,058 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-14 10:24:57,058 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-14 10:24:57,065 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 10:24:57" (1/1) ... [2021-06-14 10:24:57,065 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 10:24:57" (1/1) ... [2021-06-14 10:24:57,065 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 10:24:57" (1/1) ... [2021-06-14 10:24:57,066 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 10:24:57" (1/1) ... [2021-06-14 10:24:57,067 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 10:24:57" (1/1) ... [2021-06-14 10:24:57,070 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 10:24:57" (1/1) ... [2021-06-14 10:24:57,071 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 10:24:57" (1/1) ... [2021-06-14 10:24:57,071 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-14 10:24:57,072 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-14 10:24:57,072 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-14 10:24:57,072 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-14 10:24:57,073 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 10:24:57" (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 [2021-06-14 10:24:57,146 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-14 10:24:57,146 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-14 10:24:57,146 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-14 10:24:57,147 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-14 10:24:57,147 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-14 10:24:57,147 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-14 10:24:57,147 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-14 10:24:57,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-14 10:24:57,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-14 10:24:57,149 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-14 10:24:57,149 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-14 10:24:57,149 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-14 10:24:57,150 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-14 10:24:57,379 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-14 10:24:57,380 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-14 10:24:57,381 INFO L202 PluginConnector]: Adding new model misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 10:24:57 BoogieIcfgContainer [2021-06-14 10:24:57,381 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-14 10:24:57,383 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-14 10:24:57,383 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-14 10:24:57,385 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-14 10:24:57,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 10:24:57" (1/2) ... [2021-06-14 10:24:57,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7302bd85 and model type misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 10:24:57, skipping insertion in model container [2021-06-14 10:24:57,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 10:24:57" (2/2) ... [2021-06-14 10:24:57,387 INFO L111 eAbstractionObserver]: Analyzing ICFG misc-5.wvr.bpl [2021-06-14 10:24:57,392 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-14 10:24:57,392 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-14 10:24:57,392 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-14 10:24:57,393 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-14 10:24:57,420 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-06-14 10:24:57,438 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 [2021-06-14 10:24:57,562 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-14 10:24:57,562 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-14 10:24:57,562 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-14 10:24:57,562 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-14 10:24:57,562 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-14 10:24:57,563 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-14 10:24:57,563 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-14 10:24:57,563 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-14 10:24:57,684 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-14 10:24:57,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 10:24:57,689 INFO L82 PathProgramCache]: Analyzing trace with hash 89548206, now seen corresponding path program 1 times [2021-06-14 10:24:57,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 10:24:57,698 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567493741] [2021-06-14 10:24:57,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 10:24:57,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 10:24:57,846 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-14 10:24:57,846 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-14 10:24:57,847 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567493741] [2021-06-14 10:24:57,848 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567493741] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-14 10:24:57,848 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-14 10:24:57,848 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-14 10:24:57,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334881629] [2021-06-14 10:24:57,854 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-14 10:24:57,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-14 10:24:57,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-14 10:24:57,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-14 10:24:57,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-14 10:24:57,869 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-14 10:24:57,874 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 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) [2021-06-14 10:24:57,875 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-14 10:24:57,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-14 10:24:57,939 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-14 10:24:57,940 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-14 10:24:57,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 10:24:57,943 INFO L82 PathProgramCache]: Analyzing trace with hash -2088148536, now seen corresponding path program 2 times [2021-06-14 10:24:57,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 10:24:57,944 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362520473] [2021-06-14 10:24:57,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 10:24:57,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 10:24:58,075 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-14 10:24:58,076 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-14 10:24:58,076 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362520473] [2021-06-14 10:24:58,076 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362520473] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 10:24:58,076 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809590299] [2021-06-14 10:24:58,076 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 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-06-14 10:24:58,131 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-14 10:24:58,131 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-14 10:24:58,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-14 10:24:58,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-14 10:24:58,405 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-14 10:24:58,406 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [809590299] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 10:24:58,406 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-14 10:24:58,406 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-06-14 10:24:58,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574102935] [2021-06-14 10:24:58,408 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-14 10:24:58,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-14 10:24:58,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-14 10:24:58,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-06-14 10:24:58,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-14 10:24:58,409 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-14 10:24:58,409 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 10 states have internal predecessors, (34), 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) [2021-06-14 10:24:58,409 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-14 10:24:58,409 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-14 10:24:58,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-14 10:24:58,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-14 10:24:58,731 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-14 10:24:58,731 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-14 10:24:58,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 10:24:58,731 INFO L82 PathProgramCache]: Analyzing trace with hash 433110670, now seen corresponding path program 3 times [2021-06-14 10:24:58,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 10:24:58,732 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856257886] [2021-06-14 10:24:58,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 10:24:58,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 10:24:58,909 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 1 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-14 10:24:58,910 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-14 10:24:58,910 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856257886] [2021-06-14 10:24:58,910 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856257886] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 10:24:58,910 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687538560] [2021-06-14 10:24:58,910 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 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 [2021-06-14 10:24:58,953 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-06-14 10:24:58,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-14 10:24:58,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-14 10:24:58,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-14 10:24:59,316 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 1 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-14 10:24:59,316 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687538560] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 10:24:59,316 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-14 10:24:59,316 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-06-14 10:24:59,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716931372] [2021-06-14 10:24:59,318 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-14 10:24:59,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-14 10:24:59,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-14 10:24:59,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2021-06-14 10:24:59,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-14 10:24:59,320 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-14 10:24:59,321 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 16 states have internal predecessors, (46), 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) [2021-06-14 10:24:59,321 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-14 10:24:59,321 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-14 10:24:59,321 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-14 10:24:59,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-14 10:24:59,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-14 10:24:59,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-14 10:24:59,840 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-14 10:24:59,841 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-14 10:24:59,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 10:24:59,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1804982744, now seen corresponding path program 4 times [2021-06-14 10:24:59,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 10:24:59,842 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195631598] [2021-06-14 10:24:59,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 10:24:59,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 10:26:54,295 WARN L205 SmtUtils]: Spent 1.90 m on a formula simplification. DAG size of input: 72 DAG size of output: 12 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown