/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-POR-DelaySleep-NoLbe-Random42.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/array-sum-alt.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2abb09bbbae98a04ae2fcc735832bfdba44f6fbc-2abb09b [2021-06-06 16:56:31,847 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-06 16:56:31,848 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-06 16:56:31,865 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-06 16:56:31,865 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-06 16:56:31,866 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-06 16:56:31,867 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-06 16:56:31,868 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-06 16:56:31,869 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-06 16:56:31,869 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-06 16:56:31,870 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-06 16:56:31,870 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2021-06-06 16:56:31,883 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-06 16:56:31,884 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-06 16:56:31,884 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-06 16:56:31,885 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-DelaySleep-NoLbe-Random42.epf [2021-06-06 16:56:31,901 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-06 16:56:31,901 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-06 16:56:31,901 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-06 16:56:31,901 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-06 16:56:31,902 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-06 16:56:31,902 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-06 16:56:31,902 INFO L138 SettingsManager]: * Use SBE=true [2021-06-06 16:56:31,902 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-06 16:56:31,902 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-06 16:56:31,902 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-06 16:56:31,903 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-06 16:56:31,903 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-06 16:56:31,903 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-06 16:56:31,903 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-06 16:56:31,903 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-06 16:56:31,903 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-06 16:56:31,903 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-06 16:56:31,903 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-06 16:56:31,904 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-06 16:56:31,904 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-06 16:56:31,904 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-06 16:56:31,904 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-06 16:56:31,904 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-06 16:56:31,904 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-06 16:56:31,904 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-06 16:56:31,904 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-06 16:56:31,905 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-06 16:56:31,905 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-06 16:56:31,905 INFO L138 SettingsManager]: * DFS Order used in POR=RANDOM [2021-06-06 16:56:31,905 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-06 16:56:31,905 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-06 16:56:31,905 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-06-06 16:56:31,905 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-06 16:56:31,905 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-06-06 16:56:31,905 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-06-06 16:56:31,906 INFO L138 SettingsManager]: * Random seed used by POR DFS order=42 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-06 16:56:32,137 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-06 16:56:32,150 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-06 16:56:32,151 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-06 16:56:32,152 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-06 16:56:32,153 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-06 16:56:32,153 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/array-sum-alt.wvr.bpl [2021-06-06 16:56:32,512 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/array-sum-alt.wvr.bpl' [2021-06-06 16:56:32,528 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-06 16:56:32,529 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-06 16:56:32,530 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-06 16:56:32,531 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-06 16:56:32,531 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-06 16:56:32,539 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "array-sum-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 04:56:32" (1/1) ... [2021-06-06 16:56:32,545 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "array-sum-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 04:56:32" (1/1) ... [2021-06-06 16:56:32,549 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-06 16:56:32,550 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-06 16:56:32,550 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-06 16:56:32,550 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-06 16:56:32,555 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "array-sum-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 04:56:32" (1/1) ... [2021-06-06 16:56:32,555 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "array-sum-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 04:56:32" (1/1) ... [2021-06-06 16:56:32,556 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "array-sum-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 04:56:32" (1/1) ... [2021-06-06 16:56:32,556 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "array-sum-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 04:56:32" (1/1) ... [2021-06-06 16:56:32,558 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "array-sum-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 04:56:32" (1/1) ... [2021-06-06 16:56:32,562 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "array-sum-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 04:56:32" (1/1) ... [2021-06-06 16:56:32,563 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "array-sum-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 04:56:32" (1/1) ... [2021-06-06 16:56:32,564 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-06 16:56:32,565 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-06 16:56:32,566 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-06 16:56:32,566 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-06 16:56:32,566 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "array-sum-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 04:56:32" (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 [2021-06-06 16:56:32,617 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-06 16:56:32,617 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-06 16:56:32,618 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-06 16:56:32,618 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-06 16:56:32,618 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-06 16:56:32,618 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-06 16:56:32,618 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-06 16:56:32,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-06 16:56:32,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-06 16:56:32,619 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-06 16:56:32,619 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-06 16:56:32,619 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-06 16:56:32,620 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-06 16:56:32,804 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-06 16:56:32,804 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-06 16:56:32,805 INFO L202 PluginConnector]: Adding new model array-sum-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.06 04:56:32 BoogieIcfgContainer [2021-06-06 16:56:32,805 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-06 16:56:32,806 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-06 16:56:32,807 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-06 16:56:32,808 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-06 16:56:32,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "array-sum-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 04:56:32" (1/2) ... [2021-06-06 16:56:32,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@278e8579 and model type array-sum-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.06 04:56:32, skipping insertion in model container [2021-06-06 16:56:32,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "array-sum-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.06 04:56:32" (2/2) ... [2021-06-06 16:56:32,810 INFO L111 eAbstractionObserver]: Analyzing ICFG array-sum-alt.wvr.bpl [2021-06-06 16:56:32,830 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-06 16:56:32,830 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-06 16:56:32,830 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-06 16:56:32,831 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-06 16:56:32,877 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-06-06 16:56:32,895 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 [2021-06-06 16:56:32,953 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-06 16:56:32,954 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-06 16:56:32,954 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-06 16:56:32,954 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-06 16:56:32,954 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-06 16:56:32,954 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-06 16:56:32,954 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-06 16:56:32,954 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-06 16:56:32,993 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 16:56:32,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 16:56:32,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1901745488, now seen corresponding path program 1 times [2021-06-06 16:56:33,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 16:56:33,002 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867591190] [2021-06-06 16:56:33,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 16:56:33,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 16:56:33,195 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 16:56:33,196 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 16:56:33,196 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867591190] [2021-06-06 16:56:33,196 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867591190] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 16:56:33,196 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771592240] [2021-06-06 16:56:33,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 16:56:33,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 16:56:33,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 13 conjunts are in the unsatisfiable core [2021-06-06 16:56:33,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 16:56:33,394 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-06 16:56:33,396 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 16:56:33,397 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 16:56:33,398 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-06 16:56:33,398 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:3 [2021-06-06 16:56:33,444 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 16:56:33,445 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [771592240] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 16:56:33,445 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 16:56:33,445 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 8 [2021-06-06 16:56:33,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597181229] [2021-06-06 16:56:33,450 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-06 16:56:33,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 16:56:33,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-06 16:56:33,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-06-06 16:56:33,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 16:56:33,463 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 16:56:33,464 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 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) [2021-06-06 16:56:33,464 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 16:56:33,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-06 16:56:33,759 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-06-06 16:56:33,759 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 16:56:33,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 16:56:33,760 INFO L82 PathProgramCache]: Analyzing trace with hash 295062443, now seen corresponding path program 2 times [2021-06-06 16:56:33,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 16:56:33,760 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251335839] [2021-06-06 16:56:33,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 16:56:33,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 16:56:33,933 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 16:56:33,933 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 16:56:33,934 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251335839] [2021-06-06 16:56:33,934 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251335839] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 16:56:33,934 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793622678] [2021-06-06 16:56:33,934 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 16:56:33,973 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 16:56:33,974 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 16:56:33,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-06 16:56:33,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 16:56:34,208 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 16:56:34,210 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2021-06-06 16:56:34,227 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-06-06 16:56:34,238 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 16:56:34,240 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-06 16:56:34,241 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:35 [2021-06-06 16:56:34,381 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 16:56:34,381 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793622678] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 16:56:34,381 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 16:56:34,381 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 15] total 22 [2021-06-06 16:56:34,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040788517] [2021-06-06 16:56:34,382 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-06 16:56:34,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 16:56:34,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-06 16:56:34,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2021-06-06 16:56:34,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 16:56:34,387 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 16:56:34,387 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 2.409090909090909) internal successors, (53), 22 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 16:56:34,387 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-06 16:56:34,387 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 16:56:34,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-06 16:56:34,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-06 16:56:34,911 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 16:56:34,911 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 16:56:34,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 16:56:34,912 INFO L82 PathProgramCache]: Analyzing trace with hash 1683542470, now seen corresponding path program 3 times [2021-06-06 16:56:34,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 16:56:34,912 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821048173] [2021-06-06 16:56:34,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 16:56:34,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 16:56:35,275 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 16:56:35,275 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 16:56:35,275 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821048173] [2021-06-06 16:56:35,275 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821048173] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 16:56:35,275 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401279046] [2021-06-06 16:56:35,275 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 16:56:35,315 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-06-06 16:56:35,315 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 16:56:35,316 WARN L261 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 38 conjunts are in the unsatisfiable core [2021-06-06 16:56:35,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 16:56:36,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:56:36,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:56:36,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:56:36,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:56:36,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:56:36,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:56:36,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:56:36,024 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 16:56:36,024 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 49 [2021-06-06 16:56:36,035 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-06-06 16:56:36,043 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 16:56:36,048 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-06 16:56:36,048 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:53, output treesize:21 [2021-06-06 16:56:36,137 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 16:56:36,138 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401279046] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 16:56:36,138 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 16:56:36,138 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 21] total 37 [2021-06-06 16:56:36,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353876930] [2021-06-06 16:56:36,138 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-06-06 16:56:36,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 16:56:36,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-06-06 16:56:36,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=1191, Unknown=0, NotChecked=0, Total=1332 [2021-06-06 16:56:36,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 16:56:36,139 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 16:56:36,139 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 1.7837837837837838) internal successors, (66), 37 states have internal predecessors, (66), 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) [2021-06-06 16:56:36,139 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-06 16:56:36,140 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2021-06-06 16:56:36,140 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 16:56:38,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-06 16:56:38,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-06 16:56:38,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-06 16:56:38,734 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 16:56:38,737 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 16:56:38,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 16:56:38,738 INFO L82 PathProgramCache]: Analyzing trace with hash 836914492, now seen corresponding path program 4 times [2021-06-06 16:56:38,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 16:56:38,738 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498944680] [2021-06-06 16:56:38,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 16:56:38,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 16:56:39,159 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-06-06 16:56:39,159 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 16:56:39,159 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498944680] [2021-06-06 16:56:39,159 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498944680] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 16:56:39,159 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119262907] [2021-06-06 16:56:39,159 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 16:56:39,190 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 16:56:39,191 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 16:56:39,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 45 conjunts are in the unsatisfiable core [2021-06-06 16:56:39,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 16:56:39,826 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 17 [2021-06-06 16:56:39,827 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 16:56:39,828 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 16:56:39,828 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-06 16:56:39,829 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:37, output treesize:3 [2021-06-06 16:56:39,861 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 16:56:39,861 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2119262907] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 16:56:39,861 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 16:56:39,861 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 39 [2021-06-06 16:56:39,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833643315] [2021-06-06 16:56:39,862 INFO L462 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-06-06 16:56:39,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 16:56:39,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-06-06 16:56:39,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1350, Unknown=0, NotChecked=0, Total=1482 [2021-06-06 16:56:39,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 16:56:39,863 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 16:56:39,863 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 2.076923076923077) internal successors, (81), 39 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) [2021-06-06 16:56:39,863 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-06 16:56:39,863 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2021-06-06 16:56:39,863 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 43 states. [2021-06-06 16:56:39,863 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 16:56:43,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-06 16:56:43,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-06 16:56:43,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-06 16:56:43,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-06-06 16:56:43,211 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-06-06 16:56:43,211 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 16:56:43,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 16:56:43,212 INFO L82 PathProgramCache]: Analyzing trace with hash -805686021, now seen corresponding path program 5 times [2021-06-06 16:56:43,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 16:56:43,212 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247672277] [2021-06-06 16:56:43,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 16:56:43,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 16:56:43,276 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 19 proven. 37 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-06-06 16:56:43,277 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 16:56:43,277 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247672277] [2021-06-06 16:56:43,277 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247672277] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 16:56:43,277 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1881804167] [2021-06-06 16:56:43,277 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 16:56:43,328 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-06-06 16:56:43,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 16:56:43,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 16 conjunts are in the unsatisfiable core [2021-06-06 16:56:43,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 16:56:43,443 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 19 proven. 37 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-06-06 16:56:43,443 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1881804167] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 16:56:43,443 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 16:56:43,443 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-06 16:56:43,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680829888] [2021-06-06 16:56:43,445 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-06 16:56:43,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 16:56:43,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-06 16:56:43,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-06-06 16:56:43,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 16:56:43,445 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 16:56:43,446 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 states have internal predecessors, (51), 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) [2021-06-06 16:56:43,446 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-06 16:56:43,446 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2021-06-06 16:56:43,446 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 43 states. [2021-06-06 16:56:43,446 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 61 states. [2021-06-06 16:56:43,446 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 16:56:43,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-06 16:56:43,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-06 16:56:43,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-06 16:56:43,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-06-06 16:56:43,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-06 16:56:43,980 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 16:56:43,981 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 16:56:43,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 16:56:43,981 INFO L82 PathProgramCache]: Analyzing trace with hash 216382575, now seen corresponding path program 6 times [2021-06-06 16:56:43,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 16:56:43,981 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746599314] [2021-06-06 16:56:43,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 16:56:43,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 16:56:44,053 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 23 proven. 44 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-06-06 16:56:44,056 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 16:56:44,056 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746599314] [2021-06-06 16:56:44,056 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746599314] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 16:56:44,056 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1466749998] [2021-06-06 16:56:44,056 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 16:56:44,088 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-06-06 16:56:44,088 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 16:56:44,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 17 conjunts are in the unsatisfiable core [2021-06-06 16:56:44,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 16:56:44,231 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 33 proven. 34 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-06-06 16:56:44,232 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1466749998] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 16:56:44,232 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 16:56:44,232 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2021-06-06 16:56:44,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285082482] [2021-06-06 16:56:44,232 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 16:56:44,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 16:56:44,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 16:56:44,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2021-06-06 16:56:44,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 16:56:44,233 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 16:56:44,233 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 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) [2021-06-06 16:56:44,233 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-06 16:56:44,233 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2021-06-06 16:56:44,237 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 43 states. [2021-06-06 16:56:44,237 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 63 states. [2021-06-06 16:56:44,237 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-06 16:56:44,237 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 16:56:45,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-06 16:56:45,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-06 16:56:45,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-06 16:56:45,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-06-06 16:56:45,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-06 16:56:45,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-06 16:56:45,772 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-06-06 16:56:45,772 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 16:56:45,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 16:56:45,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1169473348, now seen corresponding path program 1 times [2021-06-06 16:56:45,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 16:56:45,773 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145717617] [2021-06-06 16:56:45,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 16:56:45,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 16:56:45,802 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 16:56:45,802 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 16:56:45,802 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145717617] [2021-06-06 16:56:45,802 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145717617] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-06 16:56:45,802 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-06 16:56:45,802 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-06 16:56:45,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847124335] [2021-06-06 16:56:45,803 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-06 16:56:45,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 16:56:45,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-06 16:56:45,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-06-06 16:56:45,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 16:56:45,803 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 16:56:45,803 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 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) [2021-06-06 16:56:45,803 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-06 16:56:45,803 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2021-06-06 16:56:45,804 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 54 states. [2021-06-06 16:56:45,804 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 67 states. [2021-06-06 16:56:45,804 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-06 16:56:45,804 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-06-06 16:56:45,804 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 16:56:46,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-06 16:56:46,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-06 16:56:46,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-06-06 16:56:46,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-06-06 16:56:46,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-06 16:56:46,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-06 16:56:46,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-06 16:56:46,181 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-06-06 16:56:46,181 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 16:56:46,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 16:56:46,181 INFO L82 PathProgramCache]: Analyzing trace with hash 1347180930, now seen corresponding path program 1 times [2021-06-06 16:56:46,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 16:56:46,181 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100697266] [2021-06-06 16:56:46,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 16:56:46,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 16:56:46,244 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-06-06 16:56:46,245 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 16:56:46,245 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100697266] [2021-06-06 16:56:46,245 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100697266] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 16:56:46,245 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46527411] [2021-06-06 16:56:46,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 16:56:46,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 16:56:46,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 10 conjunts are in the unsatisfiable core [2021-06-06 16:56:46,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 16:56:46,399 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 13 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-06-06 16:56:46,399 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [46527411] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 16:56:46,400 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 16:56:46,400 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-06-06 16:56:46,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533887267] [2021-06-06 16:56:46,400 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-06 16:56:46,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 16:56:46,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-06 16:56:46,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2021-06-06 16:56:46,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 16:56:46,401 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 16:56:46,402 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 3.6) internal successors, (54), 15 states have internal predecessors, (54), 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) [2021-06-06 16:56:46,402 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-06 16:56:46,402 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2021-06-06 16:56:46,402 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 55 states. [2021-06-06 16:56:46,402 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 70 states. [2021-06-06 16:56:46,402 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-06-06 16:56:46,402 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-06 16:56:46,402 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-06 16:56:46,402 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 16:56:46,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-06 16:56:46,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-06 16:56:46,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-06-06 16:56:46,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-06-06 16:56:46,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-06 16:56:46,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-06 16:56:46,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-06 16:56:46,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-06 16:56:46,874 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-06-06 16:56:46,874 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 16:56:46,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 16:56:46,875 INFO L82 PathProgramCache]: Analyzing trace with hash -163460985, now seen corresponding path program 2 times [2021-06-06 16:56:46,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 16:56:46,875 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277192275] [2021-06-06 16:56:46,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 16:56:46,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 16:56:46,988 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-06-06 16:56:46,989 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 16:56:46,989 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277192275] [2021-06-06 16:56:46,989 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277192275] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 16:56:46,989 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322150373] [2021-06-06 16:56:46,989 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 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 16:56:47,069 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 16:56:47,069 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 16:56:47,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 11 conjunts are in the unsatisfiable core [2021-06-06 16:56:47,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 16:56:47,282 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-06-06 16:56:47,282 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322150373] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 16:56:47,282 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 16:56:47,282 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-06-06 16:56:47,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949805193] [2021-06-06 16:56:47,284 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-06 16:56:47,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 16:56:47,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-06 16:56:47,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2021-06-06 16:56:47,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 16:56:47,286 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 16:56:47,286 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 3.5294117647058822) internal successors, (60), 17 states have internal predecessors, (60), 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) [2021-06-06 16:56:47,286 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-06 16:56:47,286 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2021-06-06 16:56:47,286 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 55 states. [2021-06-06 16:56:47,286 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 70 states. [2021-06-06 16:56:47,286 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-06-06 16:56:47,286 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-06 16:56:47,287 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-06 16:56:47,288 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-06 16:56:47,288 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 16:56:47,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-06 16:56:47,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-06 16:56:47,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-06-06 16:56:47,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-06-06 16:56:47,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-06 16:56:47,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-06 16:56:47,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-06 16:56:47,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-06 16:56:47,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-06 16:56:48,018 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-06-06 16:56:48,018 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 16:56:48,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 16:56:48,018 INFO L82 PathProgramCache]: Analyzing trace with hash -1029423262, now seen corresponding path program 3 times [2021-06-06 16:56:48,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 16:56:48,018 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854140659] [2021-06-06 16:56:48,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 16:56:48,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 16:56:48,592 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 1 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 16:56:48,593 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 16:56:48,593 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854140659] [2021-06-06 16:56:48,593 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854140659] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 16:56:48,594 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346826297] [2021-06-06 16:56:48,594 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 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 16:56:48,624 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-06-06 16:56:48,624 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 16:56:48,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 41 conjunts are in the unsatisfiable core [2021-06-06 16:56:48,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 16:56:49,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:56:49,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:56:49,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:56:49,226 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 16:56:49,226 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 9 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 12 case distinctions, treesize of input 35 treesize of output 127 [2021-06-06 16:56:56,080 WARN L205 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 2177 DAG size of output: 1561 [2021-06-06 16:56:57,274 WARN L205 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 4187 DAG size of output: 3073 [2021-06-06 16:57:26,828 WARN L205 SmtUtils]: Spent 28.98 s on a formula simplification. DAG size of input: 20811 DAG size of output: 20432 [2021-06-06 16:57:30,739 WARN L205 SmtUtils]: Spent 2.58 s on a formula simplification. DAG size of input: 6561 DAG size of output: 6212 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown