/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/popl20-proofs/threaded-sum-3-Ea4.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-a865e3bea3ade1065a4c95009cfa501fe03c5538-a865e3b [2021-02-20 02:23:08,429 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-20 02:23:08,431 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-20 02:23:08,459 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-20 02:23:08,504 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 [2021-02-20 02:23:08,542 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-20 02:23:08,542 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-20 02:23:08,543 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-02-20 02:23:08,543 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-02-20 02:23:08,546 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-20 02:23:08,546 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-20 02:23:08,546 INFO L138 SettingsManager]: * Use SBE=true [2021-02-20 02:23:08,547 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-20 02:23:08,547 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-20 02:23:08,547 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-20 02:23:08,548 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-20 02:23:08,548 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-20 02:23:08,548 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-20 02:23:08,548 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-20 02:23:08,548 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-20 02:23:08,548 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-20 02:23:08,549 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-20 02:23:08,549 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-20 02:23:08,549 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-20 02:23:08,549 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-20 02:23:08,549 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-20 02:23:08,549 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-20 02:23:08,549 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-20 02:23:08,550 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-20 02:23:08,550 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-20 02:23:08,550 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-20 02:23:08,550 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-20 02:23:08,550 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-20 02:23:08,550 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-20 02:23:08,550 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-02-20 02:23:08,551 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-02-20 02:23:08,551 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-20 02:23:08,551 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2021-02-20 02:23:08,551 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-20 02:23:08,863 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-20 02:23:08,882 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-20 02:23:08,884 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-20 02:23:08,885 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-02-20 02:23:08,887 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-02-20 02:23:08,888 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-proofs/threaded-sum-3-Ea4.wvr.bpl [2021-02-20 02:23:08,888 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-proofs/threaded-sum-3-Ea4.wvr.bpl' [2021-02-20 02:23:08,916 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-20 02:23:08,922 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-20 02:23:08,923 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-02-20 02:23:08,923 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-02-20 02:23:08,923 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-02-20 02:23:08,932 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "threaded-sum-3-Ea4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 02:23:08" (1/1) ... [2021-02-20 02:23:08,938 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "threaded-sum-3-Ea4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 02:23:08" (1/1) ... [2021-02-20 02:23:08,944 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-02-20 02:23:08,946 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-20 02:23:08,946 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-20 02:23:08,946 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-20 02:23:08,952 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "threaded-sum-3-Ea4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 02:23:08" (1/1) ... [2021-02-20 02:23:08,952 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "threaded-sum-3-Ea4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 02:23:08" (1/1) ... [2021-02-20 02:23:08,953 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "threaded-sum-3-Ea4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 02:23:08" (1/1) ... [2021-02-20 02:23:08,953 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "threaded-sum-3-Ea4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 02:23:08" (1/1) ... [2021-02-20 02:23:08,956 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "threaded-sum-3-Ea4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 02:23:08" (1/1) ... [2021-02-20 02:23:08,958 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "threaded-sum-3-Ea4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 02:23:08" (1/1) ... [2021-02-20 02:23:08,959 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "threaded-sum-3-Ea4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 02:23:08" (1/1) ... [2021-02-20 02:23:08,963 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-20 02:23:08,966 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-20 02:23:08,966 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-20 02:23:08,966 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-20 02:23:08,967 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "threaded-sum-3-Ea4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 02:23:08" (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 [2021-02-20 02:23:09,032 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-02-20 02:23:09,033 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-02-20 02:23:09,033 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-02-20 02:23:09,033 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-02-20 02:23:09,033 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-02-20 02:23:09,033 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-02-20 02:23:09,033 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-02-20 02:23:09,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-20 02:23:09,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-20 02:23:09,034 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-02-20 02:23:09,035 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-02-20 02:23:09,035 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-02-20 02:23:09,036 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-02-20 02:23:09,335 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-20 02:23:09,335 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-20 02:23:09,337 INFO L202 PluginConnector]: Adding new model threaded-sum-3-Ea4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 02:23:09 BoogieIcfgContainer [2021-02-20 02:23:09,337 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-20 02:23:09,338 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-20 02:23:09,338 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-20 02:23:09,341 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-20 02:23:09,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "threaded-sum-3-Ea4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 02:23:08" (1/2) ... [2021-02-20 02:23:09,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e774e59 and model type threaded-sum-3-Ea4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 02:23:09, skipping insertion in model container [2021-02-20 02:23:09,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "threaded-sum-3-Ea4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 02:23:09" (2/2) ... [2021-02-20 02:23:09,343 INFO L111 eAbstractionObserver]: Analyzing ICFG threaded-sum-3-Ea4.wvr.bpl [2021-02-20 02:23:09,347 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-02-20 02:23:09,347 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-20 02:23:09,360 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-20 02:23:09,361 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-02-20 02:23:09,406 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-02-20 02:23:09,421 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) [2021-02-20 02:23:09,472 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-20 02:23:09,473 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-20 02:23:09,473 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-20 02:23:09,473 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-20 02:23:09,473 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-20 02:23:09,473 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-20 02:23:09,473 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-20 02:23:09,473 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-02-20 02:23:09,619 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-20 02:23:09,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-20 02:23:09,623 INFO L82 PathProgramCache]: Analyzing trace with hash 1959928931, now seen corresponding path program 1 times [2021-02-20 02:23:09,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-20 02:23:09,631 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324803645] [2021-02-20 02:23:09,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-20 02:23:09,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-20 02:23:09,817 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-02-20 02:23:09,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324803645] [2021-02-20 02:23:09,818 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-20 02:23:09,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-20 02:23:09,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232849236] [2021-02-20 02:23:09,823 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-20 02:23:09,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-20 02:23:09,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-20 02:23:09,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-20 02:23:09,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-02-20 02:23:09,838 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-02-20 02:23:09,841 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 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) [2021-02-20 02:23:09,842 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-02-20 02:23:10,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-20 02:23:10,032 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-20 02:23:10,032 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-20 02:23:10,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-20 02:23:10,035 INFO L82 PathProgramCache]: Analyzing trace with hash 239829179, now seen corresponding path program 2 times [2021-02-20 02:23:10,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-20 02:23:10,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839305134] [2021-02-20 02:23:10,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-20 02:23:10,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-20 02:23:10,149 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-20 02:23:10,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839305134] [2021-02-20 02:23:10,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064396924] [2021-02-20 02:23:10,151 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) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-20 02:23:10,210 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-02-20 02:23:10,210 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-20 02:23:10,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 6 conjunts are in the unsatisfiable core [2021-02-20 02:23:10,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-20 02:23:10,409 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-20 02:23:10,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-20 02:23:10,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-02-20 02:23:10,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719962476] [2021-02-20 02:23:10,412 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-20 02:23:10,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-20 02:23:10,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-20 02:23:10,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-20 02:23:10,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-02-20 02:23:10,413 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-02-20 02:23:10,413 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 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) [2021-02-20 02:23:10,413 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-02-20 02:23:10,413 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-02-20 02:23:10,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-20 02:23:10,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-20 02:23:10,700 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-20 02:23:10,700 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-20 02:23:10,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-20 02:23:10,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1461346617, now seen corresponding path program 3 times [2021-02-20 02:23:10,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-20 02:23:10,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632953820] [2021-02-20 02:23:10,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-20 02:23:10,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-20 02:23:10,751 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-02-20 02:23:10,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632953820] [2021-02-20 02:23:10,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-20 02:23:10,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-20 02:23:10,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855816909] [2021-02-20 02:23:10,752 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-20 02:23:10,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-20 02:23:10,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-20 02:23:10,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-20 02:23:10,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-02-20 02:23:10,753 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-02-20 02:23:10,753 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 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) [2021-02-20 02:23:10,753 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-02-20 02:23:10,753 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-02-20 02:23:10,754 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-02-20 02:23:10,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-20 02:23:10,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-20 02:23:10,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-20 02:23:10,773 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-20 02:23:10,773 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-20 02:23:10,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-20 02:23:10,773 INFO L82 PathProgramCache]: Analyzing trace with hash 675232223, now seen corresponding path program 4 times [2021-02-20 02:23:10,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-20 02:23:10,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318733626] [2021-02-20 02:23:10,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-20 02:23:10,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-20 02:23:10,916 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-20 02:23:10,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318733626] [2021-02-20 02:23:10,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2089163884] [2021-02-20 02:23:10,917 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 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 [2021-02-20 02:23:10,962 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-02-20 02:23:10,962 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-20 02:23:10,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 10 conjunts are in the unsatisfiable core [2021-02-20 02:23:10,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-20 02:23:11,161 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-20 02:23:11,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-20 02:23:11,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-02-20 02:23:11,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361680071] [2021-02-20 02:23:11,162 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-20 02:23:11,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-20 02:23:11,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-20 02:23:11,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2021-02-20 02:23:11,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-02-20 02:23:11,163 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-02-20 02:23:11,164 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 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) [2021-02-20 02:23:11,164 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-02-20 02:23:11,164 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-02-20 02:23:11,164 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-02-20 02:23:11,164 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-02-20 02:23:11,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-20 02:23:11,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-20 02:23:11,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-20 02:23:11,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-20 02:23:11,556 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-20 02:23:11,556 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-20 02:23:11,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-20 02:23:11,557 INFO L82 PathProgramCache]: Analyzing trace with hash 395934425, now seen corresponding path program 5 times [2021-02-20 02:23:11,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-20 02:23:11,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806613284] [2021-02-20 02:23:11,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-20 02:23:11,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-20 02:23:12,306 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-20 02:23:12,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806613284] [2021-02-20 02:23:12,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222502787] [2021-02-20 02:23:12,307 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 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 [2021-02-20 02:23:12,350 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-02-20 02:23:12,350 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-20 02:23:12,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 22 conjunts are in the unsatisfiable core [2021-02-20 02:23:12,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-20 02:23:12,910 WARN L202 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2021-02-20 02:23:13,322 WARN L202 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2021-02-20 02:23:13,663 WARN L202 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 65 [2021-02-20 02:23:14,054 WARN L202 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 79 [2021-02-20 02:23:14,251 WARN L202 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2021-02-20 02:23:14,446 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-20 02:23:14,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-20 02:23:14,447 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2021-02-20 02:23:14,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519712811] [2021-02-20 02:23:14,448 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-02-20 02:23:14,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-20 02:23:14,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-02-20 02:23:14,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=838, Unknown=0, NotChecked=0, Total=1056 [2021-02-20 02:23:14,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-02-20 02:23:14,451 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-02-20 02:23:14,452 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 2.121212121212121) internal successors, (70), 32 states have internal predecessors, (70), 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) [2021-02-20 02:23:14,452 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-02-20 02:23:14,452 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-02-20 02:23:14,452 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-02-20 02:23:14,452 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-02-20 02:23:14,452 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-02-20 02:23:14,752 WARN L202 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2021-02-20 02:23:14,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-20 02:23:14,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-20 02:23:14,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-20 02:23:14,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-20 02:23:14,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-20 02:23:15,174 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-20 02:23:15,175 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-20 02:23:15,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-20 02:23:15,176 INFO L82 PathProgramCache]: Analyzing trace with hash -368419969, now seen corresponding path program 6 times [2021-02-20 02:23:15,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-20 02:23:15,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009162388] [2021-02-20 02:23:15,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-20 02:23:15,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-20 02:23:15,940 WARN L202 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 25 [2021-02-20 02:23:16,090 WARN L202 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 43 [2021-02-20 02:23:16,428 WARN L202 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 60 [2021-02-20 02:23:16,659 WARN L202 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 47 [2021-02-20 02:23:17,369 WARN L202 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 32 [2021-02-20 02:23:17,477 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-20 02:23:17,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009162388] [2021-02-20 02:23:17,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086659252] [2021-02-20 02:23:17,478 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 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 [2021-02-20 02:23:17,513 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-02-20 02:23:17,513 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-20 02:23:17,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 24 conjunts are in the unsatisfiable core [2021-02-20 02:23:17,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-20 02:23:18,229 WARN L202 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2021-02-20 02:23:18,551 WARN L202 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 71 [2021-02-20 02:23:19,063 WARN L202 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 87 [2021-02-20 02:23:19,506 WARN L202 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 93 [2021-02-20 02:23:20,050 WARN L202 SmtUtils]: Spent 445.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 111 [2021-02-20 02:23:20,306 WARN L202 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2021-02-20 02:23:20,627 WARN L202 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 69 [2021-02-20 02:23:20,760 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-20 02:23:20,761 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-20 02:23:20,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 21] total 38 [2021-02-20 02:23:20,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987693985] [2021-02-20 02:23:20,762 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-02-20 02:23:20,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-20 02:23:20,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-02-20 02:23:20,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=295, Invalid=1187, Unknown=0, NotChecked=0, Total=1482 [2021-02-20 02:23:20,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-02-20 02:23:20,763 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-02-20 02:23:20,763 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 2.076923076923077) internal successors, (81), 38 states have internal predecessors, (81), 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) [2021-02-20 02:23:20,763 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-02-20 02:23:20,764 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-02-20 02:23:20,764 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-02-20 02:23:20,764 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-02-20 02:23:20,764 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-02-20 02:23:20,764 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-02-20 02:23:21,148 WARN L202 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 72 [2021-02-20 02:23:21,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-20 02:23:21,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-20 02:23:21,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-20 02:23:21,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-20 02:23:21,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-20 02:23:21,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-20 02:23:21,750 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-02-20 02:23:21,750 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-20 02:23:21,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-20 02:23:21,751 INFO L82 PathProgramCache]: Analyzing trace with hash 878847841, now seen corresponding path program 7 times [2021-02-20 02:23:21,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-20 02:23:21,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942074109] [2021-02-20 02:23:21,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-20 02:23:21,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown