/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.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/sum-fun-alt.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9e34d99ae2c6837f487980c721c4b6acf9d9b15c-9e34d99 [2021-07-10 12:17:10,173 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-10 12:17:10,175 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-10 12:17:10,213 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-10 12:17:10,230 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-10 12:17:10,232 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-10 12:17:10,233 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-10 12:17:10,234 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-10 12:17:10,236 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-10 12:17:10,237 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-10 12:17:10,238 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-10 12:17:10,239 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-10 12:17:10,239 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-10 12:17:10,242 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-10 12:17:10,243 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-10 12:17:10,245 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-10 12:17:10,249 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-07-10 12:17:10,254 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-10 12:17:10,254 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-10 12:17:10,255 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-10 12:17:10,259 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.epf [2021-07-10 12:17:10,285 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-10 12:17:10,285 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-10 12:17:10,285 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-10 12:17:10,286 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-10 12:17:10,287 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-10 12:17:10,287 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-10 12:17:10,287 INFO L138 SettingsManager]: * Use SBE=true [2021-07-10 12:17:10,288 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-10 12:17:10,288 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-10 12:17:10,288 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-10 12:17:10,289 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-10 12:17:10,289 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-10 12:17:10,289 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-10 12:17:10,289 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-10 12:17:10,289 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-10 12:17:10,289 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-10 12:17:10,289 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-10 12:17:10,289 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-10 12:17:10,289 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-10 12:17:10,290 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-10 12:17:10,290 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-10 12:17:10,290 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-10 12:17:10,290 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-10 12:17:10,290 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-10 12:17:10,290 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-10 12:17:10,290 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-10 12:17:10,290 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-10 12:17:10,290 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-10 12:17:10,290 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-10 12:17:10,291 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-10 12:17:10,291 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-07-10 12:17:10,291 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-10 12:17:10,291 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2021-07-10 12:17:10,291 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-10 12:17:10,583 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-10 12:17:10,601 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-10 12:17:10,603 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-10 12:17:10,604 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-10 12:17:10,605 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-10 12:17:10,605 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/sum-fun-alt.wvr.bpl [2021-07-10 12:17:10,605 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/sum-fun-alt.wvr.bpl' [2021-07-10 12:17:10,622 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-10 12:17:10,623 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-10 12:17:10,624 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-10 12:17:10,624 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-10 12:17:10,624 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-10 12:17:10,632 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "sum-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 12:17:10" (1/1) ... [2021-07-10 12:17:10,637 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "sum-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 12:17:10" (1/1) ... [2021-07-10 12:17:10,642 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-10 12:17:10,643 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-10 12:17:10,643 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-10 12:17:10,644 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-10 12:17:10,649 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "sum-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 12:17:10" (1/1) ... [2021-07-10 12:17:10,649 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "sum-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 12:17:10" (1/1) ... [2021-07-10 12:17:10,649 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "sum-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 12:17:10" (1/1) ... [2021-07-10 12:17:10,650 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "sum-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 12:17:10" (1/1) ... [2021-07-10 12:17:10,651 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "sum-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 12:17:10" (1/1) ... [2021-07-10 12:17:10,653 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "sum-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 12:17:10" (1/1) ... [2021-07-10 12:17:10,654 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "sum-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 12:17:10" (1/1) ... [2021-07-10 12:17:10,654 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-10 12:17:10,655 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-10 12:17:10,655 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-10 12:17:10,655 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-10 12:17:10,656 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "sum-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 12:17:10" (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 12:17:10,702 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-10 12:17:10,703 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-10 12:17:10,703 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-10 12:17:10,703 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-10 12:17:10,703 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-10 12:17:10,703 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-10 12:17:10,703 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-10 12:17:10,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-10 12:17:10,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-10 12:17:10,704 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-07-10 12:17:10,705 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-07-10 12:17:10,705 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-07-10 12:17:10,705 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 12:17:10,897 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-10 12:17:10,897 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-07-10 12:17:10,899 INFO L202 PluginConnector]: Adding new model sum-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 12:17:10 BoogieIcfgContainer [2021-07-10 12:17:10,899 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-10 12:17:10,900 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-10 12:17:10,900 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-10 12:17:10,902 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-10 12:17:10,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "sum-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 12:17:10" (1/2) ... [2021-07-10 12:17:10,903 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fa59263 and model type sum-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.07 12:17:10, skipping insertion in model container [2021-07-10 12:17:10,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "sum-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 12:17:10" (2/2) ... [2021-07-10 12:17:10,904 INFO L111 eAbstractionObserver]: Analyzing ICFG sum-fun-alt.wvr.bpl [2021-07-10 12:17:10,907 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-10 12:17:10,907 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-10 12:17:10,907 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-10 12:17:10,908 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-10 12:17:10,981 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-07-10 12:17:11,014 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 12:17:11,078 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-10 12:17:11,078 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-10 12:17:11,079 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-10 12:17:11,079 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-10 12:17:11,079 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-10 12:17:11,080 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-10 12:17:11,080 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-10 12:17:11,080 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-10 12:17:11,214 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 12:17:11,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 12:17:11,224 INFO L82 PathProgramCache]: Analyzing trace with hash -2048413527, now seen corresponding path program 1 times [2021-07-10 12:17:11,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 12:17:11,230 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864095614] [2021-07-10 12:17:11,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 12:17:11,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 12:17:11,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 12:17:11,384 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 12:17:11,384 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864095614] [2021-07-10 12:17:11,385 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864095614] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-10 12:17:11,385 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-10 12:17:11,385 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-10 12:17:11,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28236528] [2021-07-10 12:17:11,389 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-10 12:17:11,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 12:17:11,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-10 12:17:11,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-10 12:17:11,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 12:17:11,402 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 12:17:11,403 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-10 12:17:11,403 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 12:17:11,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-10 12:17:11,426 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-10 12:17:11,426 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 12:17:11,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 12:17:11,429 INFO L82 PathProgramCache]: Analyzing trace with hash -1251079929, now seen corresponding path program 1 times [2021-07-10 12:17:11,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 12:17:11,430 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829803183] [2021-07-10 12:17:11,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 12:17:11,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 12:17:11,487 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-10 12:17:11,487 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 12:17:11,488 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829803183] [2021-07-10 12:17:11,488 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829803183] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-10 12:17:11,488 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-10 12:17:11,488 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-10 12:17:11,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146130463] [2021-07-10 12:17:11,489 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-10 12:17:11,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 12:17:11,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-10 12:17:11,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-10 12:17:11,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 12:17:11,493 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 12:17:11,493 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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 12:17:11,493 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-10 12:17:11,494 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 12:17:11,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-10 12:17:11,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 12:17:11,546 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-10 12:17:11,546 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 12:17:11,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 12:17:11,547 INFO L82 PathProgramCache]: Analyzing trace with hash 740151525, now seen corresponding path program 1 times [2021-07-10 12:17:11,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 12:17:11,547 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327734091] [2021-07-10 12:17:11,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 12:17:11,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 12:17:11,828 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 12:17:11,829 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 12:17:11,829 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327734091] [2021-07-10 12:17:11,829 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327734091] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 12:17:11,829 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767129663] [2021-07-10 12:17:11,829 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 12:17:11,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 12:17:11,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 17 conjunts are in the unsatisfiable core [2021-07-10 12:17:11,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 12:17:12,014 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-10 12:17:12,041 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-07-10 12:17:12,043 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-10 12:17:12,047 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 12:17:12,052 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 12:17:12,052 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:17, output treesize:3 [2021-07-10 12:17:12,075 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 12:17:12,075 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [767129663] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 12:17:12,075 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 12:17:12,075 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-07-10 12:17:12,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774437355] [2021-07-10 12:17:12,076 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-07-10 12:17:12,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 12:17:12,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-07-10 12:17:12,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-07-10 12:17:12,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 12:17:12,077 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 12:17:12,077 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 11 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-10 12:17:12,077 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-10 12:17:12,077 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-10 12:17:12,077 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 12:17:12,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-10 12:17:12,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 12:17:12,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-10 12:17:12,386 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 12:17:12,386 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 12:17:12,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 12:17:12,387 INFO L82 PathProgramCache]: Analyzing trace with hash 98880067, now seen corresponding path program 2 times [2021-07-10 12:17:12,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 12:17:12,387 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568509540] [2021-07-10 12:17:12,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 12:17:12,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 12:17:12,429 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 12:17:12,430 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 12:17:12,430 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568509540] [2021-07-10 12:17:12,430 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568509540] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 12:17:12,430 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037154137] [2021-07-10 12:17:12,430 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 12:17:12,457 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-10 12:17:12,457 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 12:17:12,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-07-10 12:17:12,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 12:17:12,534 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 12:17:12,535 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1037154137] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 12:17:12,535 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 12:17:12,535 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-07-10 12:17:12,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129012788] [2021-07-10 12:17:12,535 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-07-10 12:17:12,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 12:17:12,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-07-10 12:17:12,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-07-10 12:17:12,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 12:17:12,536 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 12:17:12,536 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 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 12:17:12,536 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-10 12:17:12,536 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-10 12:17:12,536 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-10 12:17:12,536 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 12:17:12,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-10 12:17:12,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 12:17:12,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-10 12:17:12,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-10 12:17:12,874 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 12:17:12,874 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 12:17:12,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 12:17:12,874 INFO L82 PathProgramCache]: Analyzing trace with hash -832533121, now seen corresponding path program 1 times [2021-07-10 12:17:12,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 12:17:12,875 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591384405] [2021-07-10 12:17:12,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 12:17:12,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 12:17:12,974 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-10 12:17:12,974 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 12:17:12,974 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591384405] [2021-07-10 12:17:12,975 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591384405] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 12:17:12,975 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963541714] [2021-07-10 12:17:12,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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) [2021-07-10 12:17:13,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 12:17:13,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2021-07-10 12:17:13,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 12:17:13,132 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-10 12:17:13,133 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1963541714] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 12:17:13,133 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 12:17:13,133 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-07-10 12:17:13,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100001505] [2021-07-10 12:17:13,133 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-10 12:17:13,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 12:17:13,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-10 12:17:13,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-07-10 12:17:13,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 12:17:13,135 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 12:17:13,135 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) [2021-07-10 12:17:13,135 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-10 12:17:13,135 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-10 12:17:13,135 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-10 12:17:13,135 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-07-10 12:17:13,135 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 12:17:13,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-10 12:17:13,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 12:17:13,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-10 12:17:13,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-10 12:17:13,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-10 12:17:13,453 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 12:17:13,453 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 12:17:13,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 12:17:13,453 INFO L82 PathProgramCache]: Analyzing trace with hash 399673437, now seen corresponding path program 2 times [2021-07-10 12:17:13,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 12:17:13,454 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599949631] [2021-07-10 12:17:13,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 12:17:13,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 12:17:13,821 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 12:17:13,821 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 12:17:13,821 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599949631] [2021-07-10 12:17:13,821 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599949631] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 12:17:13,821 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857759053] [2021-07-10 12:17:13,821 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 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 12:17:13,866 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-10 12:17:13,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 12:17:13,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 32 conjunts are in the unsatisfiable core [2021-07-10 12:17:13,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 12:17:14,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 12:17:14,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 12:17:14,131 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-10 12:17:14,132 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-07-10 12:17:14,134 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-10 12:17:14,138 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 12:17:14,139 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 12:17:14,139 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:31, output treesize:3 [2021-07-10 12:17:14,164 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 12:17:14,165 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857759053] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 12:17:14,165 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 12:17:14,165 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 22 [2021-07-10 12:17:14,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597984350] [2021-07-10 12:17:14,165 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-07-10 12:17:14,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 12:17:14,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-07-10 12:17:14,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2021-07-10 12:17:14,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 12:17:14,166 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 12:17:14,166 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 2.3636363636363638) internal successors, (52), 22 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-10 12:17:14,166 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-10 12:17:14,166 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-10 12:17:14,166 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-10 12:17:14,166 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-07-10 12:17:14,166 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-10 12:17:14,166 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 12:17:14,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-10 12:17:14,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 12:17:14,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-10 12:17:14,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-10 12:17:14,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-10 12:17:14,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-10 12:17:15,142 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-07-10 12:17:15,142 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 12:17:15,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 12:17:15,142 INFO L82 PathProgramCache]: Analyzing trace with hash -860798021, now seen corresponding path program 3 times [2021-07-10 12:17:15,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 12:17:15,143 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69138057] [2021-07-10 12:17:15,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 12:17:15,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 12:17:15,223 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 12:17:15,223 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 12:17:15,223 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69138057] [2021-07-10 12:17:15,223 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69138057] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 12:17:15,224 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416853538] [2021-07-10 12:17:15,224 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 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 12:17:15,252 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-07-10 12:17:15,253 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 12:17:15,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 11 conjunts are in the unsatisfiable core [2021-07-10 12:17:15,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 12:17:15,404 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 12:17:15,404 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [416853538] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 12:17:15,405 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 12:17:15,405 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2021-07-10 12:17:15,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753230152] [2021-07-10 12:17:15,405 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-07-10 12:17:15,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 12:17:15,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-07-10 12:17:15,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2021-07-10 12:17:15,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 12:17:15,406 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 12:17:15,406 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.6) internal successors, (52), 20 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-10 12:17:15,406 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-10 12:17:15,406 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-10 12:17:15,406 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-10 12:17:15,406 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-07-10 12:17:15,406 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-10 12:17:15,406 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2021-07-10 12:17:15,406 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 12:17:15,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-10 12:17:15,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 12:17:15,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-10 12:17:15,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-10 12:17:15,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-10 12:17:15,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-10 12:17:15,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-07-10 12:17:15,980 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 12:17:15,980 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 12:17:15,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 12:17:15,982 INFO L82 PathProgramCache]: Analyzing trace with hash -18642185, now seen corresponding path program 4 times [2021-07-10 12:17:15,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 12:17:15,982 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633634468] [2021-07-10 12:17:15,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 12:17:16,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 12:17:16,082 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 16 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-10 12:17:16,083 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 12:17:16,083 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633634468] [2021-07-10 12:17:16,083 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633634468] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 12:17:16,083 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724878935] [2021-07-10 12:17:16,083 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 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 12:17:16,118 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-07-10 12:17:16,118 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 12:17:16,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 11 conjunts are in the unsatisfiable core [2021-07-10 12:17:16,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 12:17:16,235 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 16 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-10 12:17:16,235 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [724878935] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 12:17:16,235 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 12:17:16,235 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 17 [2021-07-10 12:17:16,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286420283] [2021-07-10 12:17:16,236 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-10 12:17:16,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 12:17:16,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-10 12:17:16,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2021-07-10 12:17:16,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 12:17:16,236 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 12:17:16,236 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 17 states have internal predecessors, (50), 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 12:17:16,237 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-10 12:17:16,237 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-10 12:17:16,237 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-10 12:17:16,237 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-07-10 12:17:16,237 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-10 12:17:16,237 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2021-07-10 12:17:16,237 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2021-07-10 12:17:16,237 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 12:17:16,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-10 12:17:16,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 12:17:16,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-10 12:17:16,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-10 12:17:16,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-10 12:17:16,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-10 12:17:16,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-07-10 12:17:16,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-10 12:17:16,602 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 12:17:16,602 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 12:17:16,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 12:17:16,603 INFO L82 PathProgramCache]: Analyzing trace with hash -1357658155, now seen corresponding path program 5 times [2021-07-10 12:17:16,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 12:17:16,603 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132615911] [2021-07-10 12:17:16,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 12:17:16,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 12:17:17,034 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 2 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 12:17:17,034 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 12:17:17,034 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132615911] [2021-07-10 12:17:17,034 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132615911] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 12:17:17,034 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858465667] [2021-07-10 12:17:17,034 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 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 12:17:17,066 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-07-10 12:17:17,066 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 12:17:17,067 WARN L261 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 48 conjunts are in the unsatisfiable core [2021-07-10 12:17:17,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 12:17:17,648 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-10 12:17:17,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 12:17:17,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 12:17:17,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 12:17:17,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 12:17:17,652 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 17 [2021-07-10 12:17:17,653 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-10 12:17:17,658 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 12:17:17,659 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-07-10 12:17:17,659 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:48, output treesize:3 [2021-07-10 12:17:17,683 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 12:17:17,683 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [858465667] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 12:17:17,683 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 12:17:17,683 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 31 [2021-07-10 12:17:17,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407888608] [2021-07-10 12:17:17,683 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-07-10 12:17:17,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 12:17:17,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-07-10 12:17:17,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=845, Unknown=0, NotChecked=0, Total=930 [2021-07-10 12:17:17,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 12:17:17,684 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 12:17:17,685 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 2.193548387096774) internal successors, (68), 31 states have internal predecessors, (68), 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 12:17:17,685 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-10 12:17:17,685 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-10 12:17:17,685 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-10 12:17:17,685 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-07-10 12:17:17,685 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-10 12:17:17,685 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2021-07-10 12:17:17,685 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2021-07-10 12:17:17,685 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-07-10 12:17:17,685 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 12:17:19,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-10 12:17:19,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 12:17:19,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-10 12:17:19,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-10 12:17:19,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-10 12:17:19,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-10 12:17:19,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-07-10 12:17:19,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-10 12:17:19,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-07-10 12:17:19,479 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-07-10 12:17:19,479 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 12:17:19,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 12:17:19,480 INFO L82 PathProgramCache]: Analyzing trace with hash -986074607, now seen corresponding path program 6 times [2021-07-10 12:17:19,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 12:17:19,481 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590232160] [2021-07-10 12:17:19,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 12:17:19,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 12:17:20,073 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 4 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 12:17:20,074 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 12:17:20,074 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590232160] [2021-07-10 12:17:20,074 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590232160] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 12:17:20,074 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [453482026] [2021-07-10 12:17:20,074 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 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 [2021-07-10 12:17:20,108 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-07-10 12:17:20,108 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 12:17:20,109 WARN L261 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 58 conjunts are in the unsatisfiable core [2021-07-10 12:17:20,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 12:17:21,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 12:17:21,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 12:17:21,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 12:17:21,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 12:17:21,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 12:17:21,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 12:17:21,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 12:17:21,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 12:17:21,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 12:17:21,176 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2021-07-10 12:17:21,176 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 12:17:21,176 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 12 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 24 case distinctions, treesize of input 49 treesize of output 243 [2021-07-10 12:17:21,658 WARN L205 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 807 DAG size of output: 589 [2021-07-10 12:17:21,929 WARN L205 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 819 DAG size of output: 599 [2021-07-10 12:17:22,469 WARN L205 SmtUtils]: Spent 534.00 ms on a formula simplification. DAG size of input: 553 DAG size of output: 629 [2021-07-10 12:17:22,682 WARN L205 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 547 DAG size of output: 547 [2021-07-10 12:17:22,822 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 491 DAG size of output: 491 [2021-07-10 12:17:22,954 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 437 DAG size of output: 437 [2021-07-10 12:17:24,198 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 826 DAG size of output: 694 [2021-07-10 12:17:24,443 WARN L205 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 1062 DAG size of output: 867 [2021-07-10 12:17:24,968 WARN L205 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 1267 DAG size of output: 1013 [2021-07-10 12:17:25,744 WARN L205 SmtUtils]: Spent 533.00 ms on a formula simplification. DAG size of input: 1468 DAG size of output: 1162 [2021-07-10 12:17:26,787 WARN L205 SmtUtils]: Spent 702.00 ms on a formula simplification. DAG size of input: 1652 DAG size of output: 1304 [2021-07-10 12:17:27,876 WARN L205 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 1921 DAG size of output: 1533 [2021-07-10 12:17:28,967 WARN L205 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 1921 DAG size of output: 1533 [2021-07-10 12:17:30,174 WARN L205 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 1927 DAG size of output: 1539 [2021-07-10 12:17:32,687 WARN L205 SmtUtils]: Spent 2.50 s on a formula simplification. DAG size of input: 1428 DAG size of output: 1780 [2021-07-10 12:17:32,903 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 334 DAG size of output: 377 [2021-07-10 12:17:33,089 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 331 DAG size of output: 377 [2021-07-10 12:17:33,937 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 858 DAG size of output: 826 [2021-07-10 12:17:34,669 WARN L205 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 1181 DAG size of output: 1131 [2021-07-10 12:17:35,105 WARN L205 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 1336 DAG size of output: 1277 [2021-07-10 12:17:35,736 WARN L205 SmtUtils]: Spent 624.00 ms on a formula simplification. DAG size of input: 1529 DAG size of output: 1465 [2021-07-10 12:17:36,405 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 749 DAG size of output: 709 [2021-07-10 12:17:38,401 WARN L205 SmtUtils]: Spent 481.00 ms on a formula simplification. DAG size of input: 471 DAG size of output: 580 [2021-07-10 12:17:38,582 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 465 DAG size of output: 465 [2021-07-10 12:17:38,914 WARN L205 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 415 DAG size of output: 469 [2021-07-10 12:17:40,193 WARN L205 SmtUtils]: Spent 593.00 ms on a formula simplification. DAG size of input: 1714 DAG size of output: 1500 [2021-07-10 12:17:40,607 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 515 DAG size of output: 510 [2021-07-10 12:17:40,747 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 624 DAG size of output: 604 [2021-07-10 12:17:40,905 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 706 DAG size of output: 683 [2021-07-10 12:17:41,095 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 716 DAG size of output: 693 [2021-07-10 12:17:42,048 WARN L205 SmtUtils]: Spent 948.00 ms on a formula simplification. DAG size of input: 2114 DAG size of output: 1876 [2021-07-10 12:17:43,424 WARN L205 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 2378 DAG size of output: 2090 [2021-07-10 12:17:49,431 WARN L205 SmtUtils]: Spent 5.99 s on a formula simplification. DAG size of input: 6712 DAG size of output: 6019 [2021-07-10 12:17:55,475 WARN L205 SmtUtils]: Spent 6.01 s on a formula simplification. DAG size of input: 6712 DAG size of output: 6019 [2021-07-10 12:18:01,847 WARN L205 SmtUtils]: Spent 6.33 s on a formula simplification. DAG size of input: 6715 DAG size of output: 6022 [2021-07-10 12:18:14,202 WARN L205 SmtUtils]: Spent 12.31 s on a formula simplification. DAG size of input: 5797 DAG size of output: 7117 [2021-07-10 12:18:15,526 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 761 DAG size of output: 698 [2021-07-10 12:18:15,664 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 247 DAG size of output: 290 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown