/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleepPersistentFixedOrder-NoLbe-Lockstep.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/sum-fun.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-a47a088281b0b97d17910950432b7c5b5bc3adeb-a47a088 [2021-07-14 19:31:29,422 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-14 19:31:29,425 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-14 19:31:29,466 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-14 19:31:29,544 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-NewStatesSleepPersistentFixedOrder-NoLbe-Lockstep.epf [2021-07-14 19:31:29,580 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-14 19:31:29,580 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-14 19:31:29,581 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-14 19:31:29,581 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-14 19:31:29,583 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-14 19:31:29,583 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-14 19:31:29,583 INFO L138 SettingsManager]: * Use SBE=true [2021-07-14 19:31:29,584 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-14 19:31:29,584 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-14 19:31:29,584 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-14 19:31:29,585 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-14 19:31:29,585 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-14 19:31:29,585 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-14 19:31:29,585 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-14 19:31:29,585 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-14 19:31:29,585 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-14 19:31:29,585 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-14 19:31:29,586 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-14 19:31:29,586 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-14 19:31:29,586 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-14 19:31:29,586 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-14 19:31:29,586 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-14 19:31:29,586 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-14 19:31:29,586 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-14 19:31:29,587 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-14 19:31:29,587 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-14 19:31:29,587 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-14 19:31:29,587 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-14 19:31:29,587 INFO L138 SettingsManager]: * DFS Order used in POR=PSEUDO_LOCKSTEP [2021-07-14 19:31:29,587 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-14 19:31:29,587 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-14 19:31:29,588 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-07-14 19:31:29,588 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-14 19:31:29,588 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2021-07-14 19:31:29,588 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-14 19:31:29,855 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-14 19:31:29,871 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-14 19:31:29,873 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-14 19:31:29,873 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-14 19:31:29,874 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-14 19:31:29,875 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/sum-fun.wvr.bpl [2021-07-14 19:31:29,875 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/sum-fun.wvr.bpl' [2021-07-14 19:31:29,897 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-14 19:31:29,898 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-14 19:31:29,899 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-14 19:31:29,899 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-14 19:31:29,900 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-14 19:31:29,908 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "sum-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 07:31:29" (1/1) ... [2021-07-14 19:31:29,913 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "sum-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 07:31:29" (1/1) ... [2021-07-14 19:31:29,918 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-14 19:31:29,920 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-14 19:31:29,920 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-14 19:31:29,920 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-14 19:31:29,926 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "sum-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 07:31:29" (1/1) ... [2021-07-14 19:31:29,926 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "sum-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 07:31:29" (1/1) ... [2021-07-14 19:31:29,927 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "sum-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 07:31:29" (1/1) ... [2021-07-14 19:31:29,927 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "sum-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 07:31:29" (1/1) ... [2021-07-14 19:31:29,929 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "sum-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 07:31:29" (1/1) ... [2021-07-14 19:31:29,931 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "sum-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 07:31:29" (1/1) ... [2021-07-14 19:31:29,932 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "sum-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 07:31:29" (1/1) ... [2021-07-14 19:31:29,932 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-14 19:31:29,933 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-14 19:31:29,933 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-14 19:31:29,933 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-14 19:31:29,937 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "sum-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 07:31:29" (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 [2021-07-14 19:31:30,005 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-14 19:31:30,005 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-14 19:31:30,005 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-14 19:31:30,006 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-14 19:31:30,006 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-14 19:31:30,006 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-14 19:31:30,006 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-14 19:31:30,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-14 19:31:30,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-14 19:31:30,006 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-07-14 19:31:30,007 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-07-14 19:31:30,007 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-07-14 19:31:30,007 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-14 19:31:30,257 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-14 19:31:30,258 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-07-14 19:31:30,260 INFO L202 PluginConnector]: Adding new model sum-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 07:31:30 BoogieIcfgContainer [2021-07-14 19:31:30,260 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-14 19:31:30,261 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-14 19:31:30,261 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-14 19:31:30,264 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-14 19:31:30,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "sum-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 07:31:29" (1/2) ... [2021-07-14 19:31:30,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c7d6ae3 and model type sum-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 07:31:30, skipping insertion in model container [2021-07-14 19:31:30,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "sum-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 07:31:30" (2/2) ... [2021-07-14 19:31:30,266 INFO L111 eAbstractionObserver]: Analyzing ICFG sum-fun.wvr.bpl [2021-07-14 19:31:30,295 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-14 19:31:30,296 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-14 19:31:30,296 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-14 19:31:30,296 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-14 19:31:30,329 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-07-14 19:31:30,347 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 [2021-07-14 19:31:30,425 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-14 19:31:30,425 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-14 19:31:30,426 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-14 19:31:30,426 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-14 19:31:30,426 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-14 19:31:30,426 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-14 19:31:30,426 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-14 19:31:30,426 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-14 19:31:30,539 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 19:31:30,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 19:31:30,544 INFO L82 PathProgramCache]: Analyzing trace with hash -548399394, now seen corresponding path program 1 times [2021-07-14 19:31:30,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 19:31:30,555 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123838496] [2021-07-14 19:31:30,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 19:31:30,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 19:31:30,762 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-07-14 19:31:30,762 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 19:31:30,762 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123838496] [2021-07-14 19:31:30,763 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123838496] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 19:31:30,763 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [717621721] [2021-07-14 19:31:30,764 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 [2021-07-14 19:31:30,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 19:31:30,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 5 conjunts are in the unsatisfiable core [2021-07-14 19:31:30,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 19:31:30,966 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-07-14 19:31:30,966 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [717621721] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 19:31:30,966 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 19:31:30,967 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2021-07-14 19:31:30,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800676657] [2021-07-14 19:31:30,972 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-14 19:31:30,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 19:31:30,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-14 19:31:30,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-07-14 19:31:30,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 19:31:30,987 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 19:31:30,989 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 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) [2021-07-14 19:31:30,989 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 19:31:31,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 19:31:31,325 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-07-14 19:31:31,325 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 19:31:31,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 19:31:31,326 INFO L82 PathProgramCache]: Analyzing trace with hash 656275072, now seen corresponding path program 2 times [2021-07-14 19:31:31,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 19:31:31,326 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307312566] [2021-07-14 19:31:31,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 19:31:31,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 19:31:31,413 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-07-14 19:31:31,414 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 19:31:31,414 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307312566] [2021-07-14 19:31:31,414 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307312566] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 19:31:31,414 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580434926] [2021-07-14 19:31:31,415 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 [2021-07-14 19:31:31,466 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-14 19:31:31,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 19:31:31,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 7 conjunts are in the unsatisfiable core [2021-07-14 19:31:31,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 19:31:31,573 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-07-14 19:31:31,574 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [580434926] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 19:31:31,574 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 19:31:31,574 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-07-14 19:31:31,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548881283] [2021-07-14 19:31:31,575 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-14 19:31:31,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 19:31:31,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-14 19:31:31,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-07-14 19:31:31,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 19:31:31,576 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 19:31:31,577 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 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) [2021-07-14 19:31:31,577 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 19:31:31,577 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 19:31:31,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 19:31:31,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 19:31:31,924 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 19:31:31,925 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 19:31:31,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 19:31:31,926 INFO L82 PathProgramCache]: Analyzing trace with hash -1292733022, now seen corresponding path program 3 times [2021-07-14 19:31:31,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 19:31:31,926 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429514390] [2021-07-14 19:31:31,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 19:31:31,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 19:31:32,018 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 19:31:32,018 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 19:31:32,018 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429514390] [2021-07-14 19:31:32,019 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429514390] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 19:31:32,019 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542068903] [2021-07-14 19:31:32,019 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 [2021-07-14 19:31:32,059 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-07-14 19:31:32,060 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 19:31:32,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 9 conjunts are in the unsatisfiable core [2021-07-14 19:31:32,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 19:31:32,271 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 19:31:32,271 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [542068903] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 19:31:32,272 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 19:31:32,272 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-07-14 19:31:32,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090229399] [2021-07-14 19:31:32,274 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-07-14 19:31:32,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 19:31:32,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-07-14 19:31:32,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2021-07-14 19:31:32,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 19:31:32,276 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 19:31:32,276 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 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) [2021-07-14 19:31:32,277 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 19:31:32,278 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 19:31:32,280 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 19:31:32,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 19:31:32,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 19:31:32,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-14 19:31:32,657 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 19:31:32,657 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 19:31:32,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 19:31:32,658 INFO L82 PathProgramCache]: Analyzing trace with hash -1683770300, now seen corresponding path program 4 times [2021-07-14 19:31:32,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 19:31:32,658 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643980912] [2021-07-14 19:31:32,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 19:31:32,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 19:31:33,322 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 19:31:33,323 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 19:31:33,323 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643980912] [2021-07-14 19:31:33,323 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643980912] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 19:31:33,329 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135433223] [2021-07-14 19:31:33,329 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 [2021-07-14 19:31:33,371 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-07-14 19:31:33,371 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 19:31:33,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 42 conjunts are in the unsatisfiable core [2021-07-14 19:31:33,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 19:31:34,198 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 19:31:34,219 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 19:31:34,219 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 41 [2021-07-14 19:31:34,236 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-14 19:31:34,242 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 19:31:34,245 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-07-14 19:31:34,245 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:41, output treesize:5 [2021-07-14 19:31:34,275 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 19:31:34,276 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135433223] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 19:31:34,276 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 19:31:34,276 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16] total 27 [2021-07-14 19:31:34,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138472654] [2021-07-14 19:31:34,277 INFO L462 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-07-14 19:31:34,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 19:31:34,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-07-14 19:31:34,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=620, Unknown=0, NotChecked=0, Total=702 [2021-07-14 19:31:34,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 19:31:34,278 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 19:31:34,278 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 2.2222222222222223) internal successors, (60), 27 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) [2021-07-14 19:31:34,278 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 19:31:34,278 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 19:31:34,278 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2021-07-14 19:31:34,278 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 19:31:35,460 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 59 [2021-07-14 19:31:35,699 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 58 [2021-07-14 19:31:36,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 19:31:36,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 19:31:36,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-14 19:31:36,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-07-14 19:31:36,296 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 19:31:36,297 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 19:31:36,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 19:31:36,298 INFO L82 PathProgramCache]: Analyzing trace with hash 486527590, now seen corresponding path program 5 times [2021-07-14 19:31:36,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 19:31:36,298 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349320815] [2021-07-14 19:31:36,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 19:31:36,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 19:31:36,435 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 9 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 19:31:36,436 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 19:31:36,436 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349320815] [2021-07-14 19:31:36,436 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349320815] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 19:31:36,436 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929673997] [2021-07-14 19:31:36,436 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 [2021-07-14 19:31:36,471 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-07-14 19:31:36,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 19:31:36,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 13 conjunts are in the unsatisfiable core [2021-07-14 19:31:36,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 19:31:36,728 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 16 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 19:31:36,728 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [929673997] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 19:31:36,728 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 19:31:36,728 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 24 [2021-07-14 19:31:36,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142152637] [2021-07-14 19:31:36,729 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-07-14 19:31:36,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 19:31:36,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-07-14 19:31:36,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=449, Unknown=0, NotChecked=0, Total=552 [2021-07-14 19:31:36,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 19:31:36,730 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 19:31:36,730 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 2.5416666666666665) internal successors, (61), 24 states have internal predecessors, (61), 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) [2021-07-14 19:31:36,730 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 19:31:36,731 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 19:31:36,731 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2021-07-14 19:31:36,731 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2021-07-14 19:31:36,731 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 19:31:37,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 19:31:37,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 19:31:37,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-14 19:31:37,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-07-14 19:31:37,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-07-14 19:31:37,588 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 19:31:37,589 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 19:31:37,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 19:31:37,589 INFO L82 PathProgramCache]: Analyzing trace with hash 267602802, now seen corresponding path program 6 times [2021-07-14 19:31:37,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 19:31:37,590 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121416169] [2021-07-14 19:31:37,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 19:31:37,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 19:31:37,734 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 16 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 19:31:37,734 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 19:31:37,734 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121416169] [2021-07-14 19:31:37,734 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121416169] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 19:31:37,734 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506624386] [2021-07-14 19:31:37,734 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 [2021-07-14 19:31:37,775 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-07-14 19:31:37,775 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 19:31:37,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 15 conjunts are in the unsatisfiable core [2021-07-14 19:31:37,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 19:31:38,043 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 14 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 19:31:38,043 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [506624386] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 19:31:38,043 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 19:31:38,043 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16] total 27 [2021-07-14 19:31:38,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917286891] [2021-07-14 19:31:38,044 INFO L462 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-07-14 19:31:38,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 19:31:38,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-07-14 19:31:38,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=567, Unknown=0, NotChecked=0, Total=702 [2021-07-14 19:31:38,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 19:31:38,045 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 19:31:38,045 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 2.740740740740741) internal successors, (74), 27 states have internal predecessors, (74), 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) [2021-07-14 19:31:38,046 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 19:31:38,046 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 19:31:38,046 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2021-07-14 19:31:38,046 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2021-07-14 19:31:38,046 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 31 states. [2021-07-14 19:31:38,046 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 19:31:38,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 19:31:38,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 19:31:38,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-14 19:31:38,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-07-14 19:31:38,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-07-14 19:31:38,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-07-14 19:31:38,438 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 19:31:38,438 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 19:31:38,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 19:31:38,438 INFO L82 PathProgramCache]: Analyzing trace with hash 728246164, now seen corresponding path program 7 times [2021-07-14 19:31:38,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 19:31:38,439 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754574130] [2021-07-14 19:31:38,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 19:31:38,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 19:31:38,575 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 14 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 19:31:38,576 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 19:31:38,577 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754574130] [2021-07-14 19:31:38,577 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754574130] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 19:31:38,577 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983746582] [2021-07-14 19:31:38,577 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 19:31:38,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 19:31:38,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 16 conjunts are in the unsatisfiable core [2021-07-14 19:31:38,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 19:31:38,897 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 14 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 19:31:38,898 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1983746582] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 19:31:38,898 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 19:31:38,898 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 29 [2021-07-14 19:31:38,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553001143] [2021-07-14 19:31:38,898 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-07-14 19:31:38,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 19:31:38,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-07-14 19:31:38,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=652, Unknown=0, NotChecked=0, Total=812 [2021-07-14 19:31:38,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 19:31:38,900 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 19:31:38,900 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 2.4827586206896552) internal successors, (72), 29 states have internal predecessors, (72), 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) [2021-07-14 19:31:38,900 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 19:31:38,900 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 19:31:38,900 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2021-07-14 19:31:38,900 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2021-07-14 19:31:38,900 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 31 states. [2021-07-14 19:31:38,900 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-07-14 19:31:38,900 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 19:31:39,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 19:31:39,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 19:31:39,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-14 19:31:39,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-07-14 19:31:39,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-07-14 19:31:39,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-07-14 19:31:39,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-07-14 19:31:39,331 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-07-14 19:31:39,331 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 19:31:39,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 19:31:39,332 INFO L82 PathProgramCache]: Analyzing trace with hash 1024885558, now seen corresponding path program 8 times [2021-07-14 19:31:39,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 19:31:39,332 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028621690] [2021-07-14 19:31:39,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 19:31:39,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 19:31:40,023 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 4 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 19:31:40,024 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 19:31:40,024 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028621690] [2021-07-14 19:31:40,024 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028621690] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 19:31:40,024 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917259601] [2021-07-14 19:31:40,024 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 [2021-07-14 19:31:40,064 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-14 19:31:40,064 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 19:31:40,065 WARN L261 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 67 conjunts are in the unsatisfiable core [2021-07-14 19:31:40,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 19:31:41,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:41,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:41,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:41,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:41,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:41,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:41,208 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 19:31:41,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:41,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:41,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:41,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:41,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:41,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:41,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:41,216 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 19:31:41,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:41,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:41,224 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 19:31:41,281 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 19:31:41,282 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 11 select indices, 11 select index equivalence classes, 21 disjoint index pairs (out of 55 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 56 treesize of output 84 [2021-07-14 19:31:41,299 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-07-14 19:31:41,312 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 19:31:41,324 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-07-14 19:31:41,324 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:78, output treesize:23 [2021-07-14 19:31:41,401 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 19:31:41,401 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917259601] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 19:31:41,401 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 19:31:41,401 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 22] total 40 [2021-07-14 19:31:41,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449251334] [2021-07-14 19:31:41,405 INFO L462 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-07-14 19:31:41,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 19:31:41,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-07-14 19:31:41,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1392, Unknown=0, NotChecked=0, Total=1560 [2021-07-14 19:31:41,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 19:31:41,406 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 19:31:41,406 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 40 states, 40 states have (on average 2.15) internal successors, (86), 40 states have internal predecessors, (86), 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) [2021-07-14 19:31:41,406 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 19:31:41,407 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 19:31:41,407 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2021-07-14 19:31:41,407 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2021-07-14 19:31:41,407 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 31 states. [2021-07-14 19:31:41,407 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-07-14 19:31:41,407 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2021-07-14 19:31:41,407 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 19:31:44,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 19:31:44,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 19:31:44,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-14 19:31:44,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-07-14 19:31:44,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-07-14 19:31:44,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-07-14 19:31:44,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-07-14 19:31:44,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-07-14 19:31:44,883 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 19:31:44,883 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 19:31:44,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 19:31:44,884 INFO L82 PathProgramCache]: Analyzing trace with hash -104566448, now seen corresponding path program 9 times [2021-07-14 19:31:44,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 19:31:44,884 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716634551] [2021-07-14 19:31:44,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 19:31:44,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 19:31:45,088 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 24 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 19:31:45,089 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 19:31:45,089 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716634551] [2021-07-14 19:31:45,089 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716634551] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 19:31:45,089 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328895416] [2021-07-14 19:31:45,089 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 [2021-07-14 19:31:45,135 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-07-14 19:31:45,135 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 19:31:45,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 20 conjunts are in the unsatisfiable core [2021-07-14 19:31:45,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 19:31:45,525 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 24 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 19:31:45,525 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328895416] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 19:31:45,525 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 19:31:45,525 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 37 [2021-07-14 19:31:45,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617955441] [2021-07-14 19:31:45,526 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-07-14 19:31:45,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 19:31:45,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-07-14 19:31:45,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=1078, Unknown=0, NotChecked=0, Total=1332 [2021-07-14 19:31:45,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 19:31:45,527 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 19:31:45,528 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 2.3783783783783785) internal successors, (88), 37 states have internal predecessors, (88), 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) [2021-07-14 19:31:45,528 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 19:31:45,528 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 19:31:45,528 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2021-07-14 19:31:45,528 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2021-07-14 19:31:45,528 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 31 states. [2021-07-14 19:31:45,528 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-07-14 19:31:45,528 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2021-07-14 19:31:45,528 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 48 states. [2021-07-14 19:31:45,528 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 19:31:45,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 19:31:45,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 19:31:45,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-14 19:31:45,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-07-14 19:31:45,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-07-14 19:31:45,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-07-14 19:31:45,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-07-14 19:31:45,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-07-14 19:31:45,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-07-14 19:31:45,994 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-07-14 19:31:45,994 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 19:31:45,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 19:31:45,994 INFO L82 PathProgramCache]: Analyzing trace with hash -1539962126, now seen corresponding path program 10 times [2021-07-14 19:31:45,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 19:31:45,995 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744049172] [2021-07-14 19:31:45,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 19:31:46,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 19:31:47,076 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 9 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 19:31:47,077 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 19:31:47,077 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744049172] [2021-07-14 19:31:47,077 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744049172] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 19:31:47,077 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272359299] [2021-07-14 19:31:47,077 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 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 19:31:47,122 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-07-14 19:31:47,122 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 19:31:47,124 WARN L261 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 82 conjunts are in the unsatisfiable core [2021-07-14 19:31:47,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 19:31:48,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:48,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:48,417 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 19:31:48,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:48,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:48,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:48,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:48,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:48,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:48,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:48,432 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 19:31:48,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:48,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:48,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:48,435 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 19:31:48,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:48,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:48,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:48,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:48,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:48,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:48,441 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 19:31:48,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:48,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:48,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:48,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:48,445 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 19:31:48,446 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 36 disjoint index pairs (out of 91 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 28 [2021-07-14 19:31:48,448 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-14 19:31:48,452 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 19:31:48,454 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-07-14 19:31:48,454 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:78, output treesize:5 [2021-07-14 19:31:48,487 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 19:31:48,487 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [272359299] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 19:31:48,487 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 19:31:48,488 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24] total 46 [2021-07-14 19:31:48,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658891945] [2021-07-14 19:31:48,488 INFO L462 AbstractCegarLoop]: Interpolant automaton has 46 states [2021-07-14 19:31:48,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 19:31:48,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-07-14 19:31:48,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1906, Unknown=0, NotChecked=0, Total=2070 [2021-07-14 19:31:48,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 19:31:48,490 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 19:31:48,491 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 46 states, 46 states have (on average 2.217391304347826) internal successors, (102), 46 states have internal predecessors, (102), 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) [2021-07-14 19:31:48,491 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 19:31:48,491 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 19:31:48,491 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2021-07-14 19:31:48,491 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2021-07-14 19:31:48,491 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 31 states. [2021-07-14 19:31:48,491 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-07-14 19:31:48,491 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2021-07-14 19:31:48,491 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 48 states. [2021-07-14 19:31:48,491 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2021-07-14 19:31:48,491 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 19:31:53,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 19:31:53,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 19:31:53,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-14 19:31:53,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-07-14 19:31:53,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-07-14 19:31:53,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-07-14 19:31:53,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-07-14 19:31:53,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-07-14 19:31:53,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-07-14 19:31:53,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-07-14 19:31:53,348 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-07-14 19:31:53,349 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 19:31:53,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 19:31:53,350 INFO L82 PathProgramCache]: Analyzing trace with hash -1359054580, now seen corresponding path program 11 times [2021-07-14 19:31:53,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 19:31:53,350 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888809376] [2021-07-14 19:31:53,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 19:31:53,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 19:31:53,616 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 38 proven. 123 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 19:31:53,616 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 19:31:53,616 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888809376] [2021-07-14 19:31:53,616 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888809376] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 19:31:53,616 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134517942] [2021-07-14 19:31:53,616 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 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 19:31:53,657 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2021-07-14 19:31:53,657 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 19:31:53,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 24 conjunts are in the unsatisfiable core [2021-07-14 19:31:53,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 19:31:54,223 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 38 proven. 123 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 19:31:54,224 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2134517942] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 19:31:54,224 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 19:31:54,224 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 45 [2021-07-14 19:31:54,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238712259] [2021-07-14 19:31:54,224 INFO L462 AbstractCegarLoop]: Interpolant automaton has 45 states [2021-07-14 19:31:54,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 19:31:54,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-07-14 19:31:54,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=372, Invalid=1608, Unknown=0, NotChecked=0, Total=1980 [2021-07-14 19:31:54,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 19:31:54,226 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 19:31:54,227 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 45 states, 45 states have (on average 2.311111111111111) internal successors, (104), 45 states have internal predecessors, (104), 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) [2021-07-14 19:31:54,227 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 19:31:54,227 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 19:31:54,227 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2021-07-14 19:31:54,227 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2021-07-14 19:31:54,227 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 31 states. [2021-07-14 19:31:54,227 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-07-14 19:31:54,227 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2021-07-14 19:31:54,227 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 48 states. [2021-07-14 19:31:54,227 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2021-07-14 19:31:54,227 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 63 states. [2021-07-14 19:31:54,228 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 19:31:54,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 19:31:54,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 19:31:54,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-14 19:31:54,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-07-14 19:31:54,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-07-14 19:31:54,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-07-14 19:31:54,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-07-14 19:31:54,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-07-14 19:31:54,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-07-14 19:31:54,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-07-14 19:31:54,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-14 19:31:54,745 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-07-14 19:31:54,746 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 19:31:54,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 19:31:54,746 INFO L82 PathProgramCache]: Analyzing trace with hash 303386798, now seen corresponding path program 12 times [2021-07-14 19:31:54,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 19:31:54,746 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630704510] [2021-07-14 19:31:54,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 19:31:54,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 19:31:56,497 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 31 proven. 151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 19:31:56,498 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 19:31:56,498 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630704510] [2021-07-14 19:31:56,498 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630704510] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 19:31:56,498 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501788783] [2021-07-14 19:31:56,498 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 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 19:31:56,569 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2021-07-14 19:31:56,569 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 19:31:56,571 WARN L261 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 103 conjunts are in the unsatisfiable core [2021-07-14 19:31:56,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 19:31:58,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:58,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:58,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:58,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:58,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:58,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:58,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:58,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:58,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:58,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:58,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:58,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:58,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:58,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:58,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:58,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:58,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:58,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:58,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:58,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:58,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:58,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:58,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:58,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:58,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:58,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:58,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:58,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:58,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:58,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:58,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:58,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:58,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:58,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:58,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:58,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:58,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:58,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:58,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:58,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:58,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:58,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:58,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:58,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:58,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:58,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:58,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:58,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:58,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:58,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:58,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:58,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:58,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:58,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:58,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:58,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:58,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:58,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:58,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:58,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:58,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:58,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:58,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:58,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:58,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:58,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:58,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:58,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:58,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:58,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:58,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:58,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:58,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:58,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:59,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:59,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:59,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:59,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:59,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:59,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:59,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:59,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:59,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:59,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:59,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:59,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:59,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:59,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:59,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:59,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:59,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:59,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:59,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:59,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:59,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:59,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:59,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:59,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:59,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:59,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:59,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:59,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:59,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:59,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:59,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:59,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:59,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:59,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:59,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:59,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:59,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:59,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:59,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:59,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:59,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:59,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:59,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:59,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:59,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:59,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:59,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:59,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:59,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:59,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:59,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:31:59,050 INFO L244 Elim1Store]: Index analysis took 123 ms [2021-07-14 19:31:59,264 WARN L205 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2021-07-14 19:31:59,265 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 19:31:59,265 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 19 select indices, 19 select index equivalence classes, 135 disjoint index pairs (out of 171 index pairs), introduced 19 new quantified variables, introduced 36 case distinctions, treesize of input 100 treesize of output 440 [2021-07-14 19:31:59,638 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 512 DAG size of output: 351 [2021-07-14 19:32:00,294 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 577 DAG size of output: 265 [2021-07-14 19:32:00,999 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 299 DAG size of output: 329 [2021-07-14 19:32:01,269 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 625 DAG size of output: 428 [2021-07-14 19:32:01,385 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 625 DAG size of output: 428 [2021-07-14 19:32:02,123 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 605 DAG size of output: 477 [2021-07-14 19:32:02,261 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 605 DAG size of output: 477 [2021-07-14 19:32:02,389 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 611 DAG size of output: 483 [2021-07-14 19:39:46,943 WARN L205 SmtUtils]: Spent 19.63 s on a formula simplification. DAG size of input: 10201 DAG size of output: 9468