/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-NewStatesSleepPersistent-NoLbe-Lockstep.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-bad/ring-nondet.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9e34d99ae2c6837f487980c721c4b6acf9d9b15c-9e34d99 [2021-07-10 09:13:47,535 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-10 09:13:47,537 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-10 09:13:47,572 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-10 09:13:47,625 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-10 09:13:47,626 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-10 09:13:47,626 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-10 09:13:47,630 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-NewStatesSleepPersistent-NoLbe-Lockstep.epf [2021-07-10 09:13:47,665 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-10 09:13:47,666 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-10 09:13:47,666 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-10 09:13:47,666 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-10 09:13:47,672 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-10 09:13:47,673 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-10 09:13:47,673 INFO L138 SettingsManager]: * Use SBE=true [2021-07-10 09:13:47,673 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-10 09:13:47,673 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-10 09:13:47,673 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-10 09:13:47,674 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-10 09:13:47,674 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-10 09:13:47,674 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-10 09:13:47,674 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-10 09:13:47,675 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-10 09:13:47,675 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-10 09:13:47,675 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-10 09:13:47,675 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-10 09:13:47,675 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-10 09:13:47,675 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-10 09:13:47,675 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-10 09:13:47,676 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-10 09:13:47,676 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-10 09:13:47,676 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-10 09:13:47,676 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-10 09:13:47,676 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-10 09:13:47,676 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-10 09:13:47,676 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-10 09:13:47,677 INFO L138 SettingsManager]: * DFS Order used in POR=PSEUDO_LOCKSTEP [2021-07-10 09:13:47,677 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-10 09:13:47,686 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-10 09:13:47,687 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-07-10 09:13:47,687 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-10 09:13:47,687 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES [2021-07-10 09:13:47,687 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-10 09:13:47,964 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-10 09:13:47,980 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-10 09:13:47,982 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-10 09:13:47,983 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-10 09:13:47,984 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-10 09:13:47,985 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-bad/ring-nondet.wvr.bpl [2021-07-10 09:13:47,985 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-bad/ring-nondet.wvr.bpl' [2021-07-10 09:13:48,017 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-10 09:13:48,019 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-10 09:13:48,021 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-10 09:13:48,021 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-10 09:13:48,021 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-10 09:13:48,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 09:13:48" (1/1) ... [2021-07-10 09:13:48,040 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 09:13:48" (1/1) ... [2021-07-10 09:13:48,047 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-10 09:13:48,048 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-10 09:13:48,048 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-10 09:13:48,048 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-10 09:13:48,055 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 09:13:48" (1/1) ... [2021-07-10 09:13:48,055 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 09:13:48" (1/1) ... [2021-07-10 09:13:48,063 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 09:13:48" (1/1) ... [2021-07-10 09:13:48,063 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 09:13:48" (1/1) ... [2021-07-10 09:13:48,066 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 09:13:48" (1/1) ... [2021-07-10 09:13:48,069 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 09:13:48" (1/1) ... [2021-07-10 09:13:48,069 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 09:13:48" (1/1) ... [2021-07-10 09:13:48,071 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-10 09:13:48,073 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-10 09:13:48,073 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-10 09:13:48,073 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-10 09:13:48,074 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 09:13:48" (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 [2021-07-10 09:13:48,134 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-10 09:13:48,134 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-10 09:13:48,134 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-10 09:13:48,134 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-10 09:13:48,134 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-10 09:13:48,135 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-10 09:13:48,135 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-10 09:13:48,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-10 09:13:48,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-10 09:13:48,136 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-07-10 09:13:48,137 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-07-10 09:13:48,137 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-07-10 09:13:48,137 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-10 09:13:48,465 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-10 09:13:48,465 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-07-10 09:13:48,467 INFO L202 PluginConnector]: Adding new model ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 09:13:48 BoogieIcfgContainer [2021-07-10 09:13:48,467 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-10 09:13:48,468 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-10 09:13:48,468 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-10 09:13:48,470 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-10 09:13:48,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 09:13:48" (1/2) ... [2021-07-10 09:13:48,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5df1651a and model type ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.07 09:13:48, skipping insertion in model container [2021-07-10 09:13:48,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 09:13:48" (2/2) ... [2021-07-10 09:13:48,472 INFO L111 eAbstractionObserver]: Analyzing ICFG ring-nondet.wvr.bpl [2021-07-10 09:13:48,477 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-10 09:13:48,477 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-10 09:13:48,477 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-10 09:13:48,478 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-10 09:13:48,507 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-07-10 09:13:48,525 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 [2021-07-10 09:13:48,597 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-10 09:13:48,598 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-10 09:13:48,598 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-10 09:13:48,598 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-10 09:13:48,598 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-10 09:13:48,599 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-10 09:13:48,599 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-10 09:13:48,599 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-10 09:13:48,796 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 09:13:48,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 09:13:48,800 INFO L82 PathProgramCache]: Analyzing trace with hash -2015778717, now seen corresponding path program 1 times [2021-07-10 09:13:48,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 09:13:48,807 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104967057] [2021-07-10 09:13:48,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 09:13:48,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 09:13:48,994 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 09:13:48,994 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 09:13:48,995 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104967057] [2021-07-10 09:13:48,995 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104967057] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 09:13:48,995 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079563732] [2021-07-10 09:13:48,996 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 [2021-07-10 09:13:49,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 09:13:49,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 7 conjunts are in the unsatisfiable core [2021-07-10 09:13:49,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 09:13:49,182 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 09:13:49,182 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079563732] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 09:13:49,182 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 09:13:49,183 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3] total 7 [2021-07-10 09:13:49,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178606474] [2021-07-10 09:13:49,187 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-10 09:13:49,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 09:13:49,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-10 09:13:49,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-07-10 09:13:49,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 09:13:49,200 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 09:13:49,201 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 7 states have internal predecessors, (55), 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) [2021-07-10 09:13:49,201 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 09:13:49,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-10 09:13:49,653 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-07-10 09:13:49,653 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 09:13:49,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 09:13:49,654 INFO L82 PathProgramCache]: Analyzing trace with hash -1206690250, now seen corresponding path program 2 times [2021-07-10 09:13:49,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 09:13:49,654 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306311632] [2021-07-10 09:13:49,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 09:13:49,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 09:13:49,792 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 09:13:49,792 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 09:13:49,792 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306311632] [2021-07-10 09:13:49,792 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306311632] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 09:13:49,792 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286326474] [2021-07-10 09:13:49,793 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 [2021-07-10 09:13:49,841 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-10 09:13:49,841 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 09:13:49,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjunts are in the unsatisfiable core [2021-07-10 09:13:49,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 09:13:50,035 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-07-10 09:13:50,036 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-10 09:13:50,046 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 09:13:50,047 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-07-10 09:13:50,048 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:18 [2021-07-10 09:13:50,119 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 09:13:50,119 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [286326474] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 09:13:50,119 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 09:13:50,119 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 13 [2021-07-10 09:13:50,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389225823] [2021-07-10 09:13:50,120 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-07-10 09:13:50,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 09:13:50,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-07-10 09:13:50,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-07-10 09:13:50,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 09:13:50,122 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 09:13:50,122 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 13 states have internal predecessors, (69), 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) [2021-07-10 09:13:50,122 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-07-10 09:13:50,122 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 09:13:50,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-10 09:13:50,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-07-10 09:13:50,960 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 09:13:50,961 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 09:13:50,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 09:13:50,961 INFO L82 PathProgramCache]: Analyzing trace with hash 211642509, now seen corresponding path program 3 times [2021-07-10 09:13:50,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 09:13:50,962 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550373451] [2021-07-10 09:13:50,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 09:13:51,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 09:13:51,144 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-07-10 09:13:51,144 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 09:13:51,144 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550373451] [2021-07-10 09:13:51,145 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550373451] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 09:13:51,145 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128544673] [2021-07-10 09:13:51,145 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 [2021-07-10 09:13:51,191 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-07-10 09:13:51,191 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 09:13:51,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 17 conjunts are in the unsatisfiable core [2021-07-10 09:13:51,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 09:13:51,626 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-07-10 09:13:51,627 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-10 09:13:51,637 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 09:13:51,638 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-07-10 09:13:51,638 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:18 [2021-07-10 09:13:51,681 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 09:13:51,682 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128544673] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 09:13:51,682 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 09:13:51,682 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 19 [2021-07-10 09:13:51,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984634553] [2021-07-10 09:13:51,683 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-07-10 09:13:51,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 09:13:51,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-07-10 09:13:51,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2021-07-10 09:13:51,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 09:13:51,684 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 09:13:51,684 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 4.5) internal successors, (90), 19 states have internal predecessors, (90), 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) [2021-07-10 09:13:51,684 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-07-10 09:13:51,685 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2021-07-10 09:13:51,685 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 09:13:52,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-10 09:13:52,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-07-10 09:13:52,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-07-10 09:13:52,740 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 09:13:52,741 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 09:13:52,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 09:13:52,742 INFO L82 PathProgramCache]: Analyzing trace with hash 689198046, now seen corresponding path program 4 times [2021-07-10 09:13:52,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 09:13:52,742 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796575846] [2021-07-10 09:13:52,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 09:13:52,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 09:13:53,124 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 1 proven. 75 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-10 09:13:53,125 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 09:13:53,125 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796575846] [2021-07-10 09:13:53,125 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796575846] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 09:13:53,125 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124232068] [2021-07-10 09:13:53,125 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 [2021-07-10 09:13:53,198 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-07-10 09:13:53,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 09:13:53,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 38 conjunts are in the unsatisfiable core [2021-07-10 09:13:53,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 09:13:53,371 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-07-10 09:13:53,373 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-10 09:13:53,381 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 09:13:53,382 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-07-10 09:13:53,382 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:40, output treesize:29 [2021-07-10 09:13:54,093 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_8, q3], 1=[v_prenex_2], 3=[v_prenex_1], 6=[q1, v_prenex_7]} [2021-07-10 09:13:54,100 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-07-10 09:13:54,105 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-10 09:13:54,157 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 09:13:54,162 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-07-10 09:13:54,164 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-07-10 09:13:54,214 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 09:13:54,222 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-07-10 09:13:54,222 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 15 [2021-07-10 09:13:54,229 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-07-10 09:13:54,267 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 09:13:54,273 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-07-10 09:13:54,273 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 10 [2021-07-10 09:13:54,275 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-07-10 09:13:54,305 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 09:13:54,311 INFO L354 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2021-07-10 09:13:54,311 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 18 [2021-07-10 09:13:54,318 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-07-10 09:13:54,348 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 09:13:54,352 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-07-10 09:13:54,353 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 36 treesize of output 18 [2021-07-10 09:13:54,355 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-07-10 09:13:54,396 INFO L628 ElimStorePlain]: treesize reduction 12, result has 73.9 percent of original size [2021-07-10 09:13:54,397 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 6 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-07-10 09:13:54,397 INFO L247 ElimStorePlain]: Needed 7 recursive calls to eliminate 12 variables, input treesize:171, output treesize:32 [2021-07-10 09:13:54,467 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 09:13:54,468 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [124232068] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 09:13:54,468 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 09:13:54,468 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17] total 31 [2021-07-10 09:13:54,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674449922] [2021-07-10 09:13:54,469 INFO L462 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-07-10 09:13:54,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 09:13:54,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-07-10 09:13:54,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=812, Unknown=0, NotChecked=0, Total=992 [2021-07-10 09:13:54,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 09:13:54,470 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 09:13:54,470 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 3.375) internal successors, (108), 31 states have internal predecessors, (108), 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) [2021-07-10 09:13:54,470 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-07-10 09:13:54,470 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2021-07-10 09:13:54,470 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2021-07-10 09:13:54,471 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 09:13:55,891 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 55 [2021-07-10 09:13:56,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-10 09:13:56,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-07-10 09:13:56,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-07-10 09:13:56,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-07-10 09:13:56,349 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-07-10 09:13:56,349 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 09:13:56,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 09:13:56,349 INFO L82 PathProgramCache]: Analyzing trace with hash -504181380, now seen corresponding path program 5 times [2021-07-10 09:13:56,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 09:13:56,350 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868497167] [2021-07-10 09:13:56,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 09:13:56,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 09:13:56,752 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 39 proven. 43 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-07-10 09:13:56,752 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 09:13:56,752 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868497167] [2021-07-10 09:13:56,752 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868497167] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 09:13:56,752 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758677279] [2021-07-10 09:13:56,752 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 [2021-07-10 09:13:56,814 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-07-10 09:13:56,814 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 09:13:56,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 28 conjunts are in the unsatisfiable core [2021-07-10 09:13:56,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 09:13:57,170 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-07-10 09:13:57,171 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-10 09:13:57,178 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 09:13:57,178 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-07-10 09:13:57,179 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:31 [2021-07-10 09:13:57,262 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 49 proven. 33 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-07-10 09:13:57,262 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [758677279] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 09:13:57,262 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 09:13:57,262 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13] total 28 [2021-07-10 09:13:57,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712508773] [2021-07-10 09:13:57,263 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-07-10 09:13:57,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 09:13:57,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-07-10 09:13:57,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=696, Unknown=0, NotChecked=0, Total=812 [2021-07-10 09:13:57,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 09:13:57,264 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 09:13:57,264 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 3.5517241379310347) internal successors, (103), 28 states have internal predecessors, (103), 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) [2021-07-10 09:13:57,264 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-07-10 09:13:57,264 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2021-07-10 09:13:57,264 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2021-07-10 09:13:57,265 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 33 states. [2021-07-10 09:13:57,265 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 09:13:58,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-10 09:13:58,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-07-10 09:13:58,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-07-10 09:13:58,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-07-10 09:13:58,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-10 09:13:59,068 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 09:13:59,069 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 09:13:59,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 09:13:59,069 INFO L82 PathProgramCache]: Analyzing trace with hash 557728900, now seen corresponding path program 6 times [2021-07-10 09:13:59,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 09:13:59,070 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40318175] [2021-07-10 09:13:59,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 09:13:59,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 09:13:59,334 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 134 proven. 101 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2021-07-10 09:13:59,335 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 09:13:59,335 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40318175] [2021-07-10 09:13:59,335 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40318175] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 09:13:59,335 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1493420167] [2021-07-10 09:13:59,335 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 [2021-07-10 09:13:59,457 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-07-10 09:13:59,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 09:13:59,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 71 conjunts are in the unsatisfiable core [2021-07-10 09:13:59,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 09:14:00,837 INFO L354 Elim1Store]: treesize reduction 252, result has 0.4 percent of original size [2021-07-10 09:14:00,837 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 70 treesize of output 34 [2021-07-10 09:14:00,840 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-10 09:14:00,847 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 09:14:00,848 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-07-10 09:14:00,848 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:82, output treesize:23 [2021-07-10 09:14:01,052 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-07-10 09:14:01,052 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 13 [2021-07-10 09:14:01,055 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-10 09:14:01,069 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 09:14:01,070 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-07-10 09:14:01,070 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:3 [2021-07-10 09:14:01,145 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 91 proven. 284 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-07-10 09:14:01,145 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1493420167] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 09:14:01,145 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 09:14:01,145 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 34] total 43 [2021-07-10 09:14:01,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963834186] [2021-07-10 09:14:01,146 INFO L462 AbstractCegarLoop]: Interpolant automaton has 44 states [2021-07-10 09:14:01,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 09:14:01,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-07-10 09:14:01,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=1682, Unknown=0, NotChecked=0, Total=1892 [2021-07-10 09:14:01,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 09:14:01,148 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 09:14:01,148 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 44 states, 44 states have (on average 3.5681818181818183) internal successors, (157), 43 states have internal predecessors, (157), 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) [2021-07-10 09:14:01,148 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-07-10 09:14:01,148 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2021-07-10 09:14:01,148 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 29 states. [2021-07-10 09:14:01,148 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 41 states. [2021-07-10 09:14:01,148 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2021-07-10 09:14:01,148 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 09:14:03,937 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-07-10 09:14:05,032 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 78 [2021-07-10 09:14:06,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-10 09:14:06,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-07-10 09:14:06,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-07-10 09:14:06,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-07-10 09:14:06,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-10 09:14:06,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-07-10 09:14:06,822 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-07-10 09:14:06,822 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 09:14:06,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 09:14:06,823 INFO L82 PathProgramCache]: Analyzing trace with hash -852823158, now seen corresponding path program 7 times [2021-07-10 09:14:06,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 09:14:06,823 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588456817] [2021-07-10 09:14:06,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 09:14:06,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 09:14:07,726 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 40 proven. 384 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2021-07-10 09:14:07,726 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 09:14:07,726 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588456817] [2021-07-10 09:14:07,727 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588456817] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 09:14:07,727 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1236808664] [2021-07-10 09:14:07,727 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 [2021-07-10 09:14:07,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 09:14:07,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 65 conjunts are in the unsatisfiable core [2021-07-10 09:14:07,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 09:14:07,896 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-07-10 09:14:07,897 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-10 09:14:07,905 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 09:14:07,906 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-07-10 09:14:07,906 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:42, output treesize:31 [2021-07-10 09:14:08,989 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-07-10 09:14:09,756 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 85 [2021-07-10 09:14:09,940 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2021-07-10 09:14:10,165 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_11, v_prenex_15], 1=[v_prenex_13], 55=[q1]} [2021-07-10 09:14:10,170 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-07-10 09:14:10,171 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-10 09:14:10,255 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 09:14:10,258 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-07-10 09:14:10,259 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-07-10 09:14:10,343 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 09:14:10,351 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-07-10 09:14:10,351 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 15 [2021-07-10 09:14:10,353 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-07-10 09:14:10,461 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2021-07-10 09:14:10,461 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 09:14:10,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:14:10,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:14:10,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:14:10,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:14:10,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:14:10,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:14:10,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:14:10,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:14:10,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:14:10,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:14:10,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:14:10,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:14:10,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:14:10,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:14:10,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:14:10,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:14:10,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:14:10,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:14:10,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:14:10,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:14:10,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:14:10,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:14:10,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:14:10,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:14:10,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:14:10,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:14:10,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:14:10,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:14:10,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:14:10,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:14:10,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:14:10,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:14:10,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:14:10,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:14:10,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:14:10,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:14:10,525 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 36 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 28 [2021-07-10 09:14:10,529 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-07-10 09:14:10,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:14:10,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:14:10,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:14:10,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:14:10,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:14:10,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:14:10,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:14:10,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:14:10,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:14:10,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:14:10,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:14:10,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:14:10,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:14:10,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:14:10,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:14:10,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:14:10,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:14:10,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:14:10,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:14:10,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:14:10,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:14:10,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:14:10,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:14:10,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:14:10,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:14:10,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:14:10,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:14:10,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:14:10,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:14:10,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:14:10,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:14:10,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:14:10,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:14:10,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:14:10,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:14:10,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:14:10,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:14:10,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:14:10,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:14:10,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:14:10,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:14:10,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:14:10,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:14:10,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:14:10,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:14:10,598 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 45 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 36 [2021-07-10 09:14:10,602 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-07-10 09:14:10,609 INFO L354 Elim1Store]: treesize reduction 540, result has 0.2 percent of original size [2021-07-10 09:14:10,609 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 80 treesize of output 36 [2021-07-10 09:14:10,614 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-07-10 09:14:10,647 INFO L628 ElimStorePlain]: treesize reduction 12, result has 73.9 percent of original size [2021-07-10 09:14:10,648 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-07-10 09:14:10,648 INFO L247 ElimStorePlain]: Needed 7 recursive calls to eliminate 8 variables, input treesize:297, output treesize:32 [2021-07-10 09:14:10,723 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 0 proven. 545 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 09:14:10,724 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1236808664] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 09:14:10,724 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 09:14:10,724 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 29] total 43 [2021-07-10 09:14:10,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9763779] [2021-07-10 09:14:10,724 INFO L462 AbstractCegarLoop]: Interpolant automaton has 44 states [2021-07-10 09:14:10,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 09:14:10,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-07-10 09:14:10,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=291, Invalid=1601, Unknown=0, NotChecked=0, Total=1892 [2021-07-10 09:14:10,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 09:14:10,726 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 09:14:10,726 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 44 states, 44 states have (on average 4.2727272727272725) internal successors, (188), 43 states have internal predecessors, (188), 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) [2021-07-10 09:14:10,726 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-07-10 09:14:10,726 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2021-07-10 09:14:10,726 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 29 states. [2021-07-10 09:14:10,726 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 41 states. [2021-07-10 09:14:10,726 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2021-07-10 09:14:10,726 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 69 states. [2021-07-10 09:14:10,726 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 09:14:13,036 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2021-07-10 09:14:13,226 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 78 [2021-07-10 09:14:13,545 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 67 [2021-07-10 09:14:14,419 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 81 [2021-07-10 09:14:14,611 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 76 [2021-07-10 09:14:14,829 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 76 [2021-07-10 09:14:15,027 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 70 [2021-07-10 09:14:15,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-10 09:14:15,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-07-10 09:14:15,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-07-10 09:14:15,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-07-10 09:14:15,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-10 09:14:15,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-07-10 09:14:15,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-07-10 09:14:15,819 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-07-10 09:14:15,819 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 09:14:15,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 09:14:15,819 INFO L82 PathProgramCache]: Analyzing trace with hash -707127471, now seen corresponding path program 8 times [2021-07-10 09:14:15,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 09:14:15,820 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686115512] [2021-07-10 09:14:15,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 09:14:16,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown