/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-Random42.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-bad/dot-product-alt.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-a47a088281b0b97d17910950432b7c5b5bc3adeb-a47a088 [2021-07-14 21:26:23,214 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-14 21:26:23,216 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-14 21:26:23,237 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-14 21:26:23,237 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-14 21:26:23,238 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-14 21:26:23,239 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-14 21:26:23,240 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-14 21:26:23,241 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-14 21:26:23,242 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-14 21:26:23,243 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-14 21:26:23,243 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-14 21:26:23,244 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-14 21:26:23,244 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-14 21:26:23,245 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-14 21:26:23,245 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-14 21:26:23,249 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-14 21:26:23,250 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-14 21:26:23,254 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-14 21:26:23,255 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-14 21:26:23,255 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-14 21:26:23,258 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-14 21:26:23,259 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-14 21:26:23,259 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-14 21:26:23,261 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-14 21:26:23,261 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-14 21:26:23,261 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-14 21:26:23,262 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-14 21:26:23,262 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-14 21:26:23,262 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-14 21:26:23,263 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-14 21:26:23,263 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-14 21:26:23,264 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-14 21:26:23,264 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-14 21:26:23,265 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-14 21:26:23,265 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-14 21:26:23,265 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-14 21:26:23,266 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-14 21:26:23,266 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-14 21:26:23,266 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-14 21:26:23,267 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-14 21:26:23,274 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-Random42.epf [2021-07-14 21:26:23,306 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-14 21:26:23,306 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-14 21:26:23,307 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-14 21:26:23,307 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-14 21:26:23,308 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-14 21:26:23,308 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-14 21:26:23,308 INFO L138 SettingsManager]: * Use SBE=true [2021-07-14 21:26:23,308 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-14 21:26:23,308 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-14 21:26:23,308 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-14 21:26:23,308 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-14 21:26:23,308 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-14 21:26:23,308 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-14 21:26:23,309 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-14 21:26:23,309 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-14 21:26:23,309 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-14 21:26:23,309 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-14 21:26:23,309 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-14 21:26:23,309 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-14 21:26:23,309 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-14 21:26:23,309 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-14 21:26:23,309 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-14 21:26:23,309 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-14 21:26:23,309 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-14 21:26:23,310 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-14 21:26:23,310 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-14 21:26:23,310 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-14 21:26:23,310 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-14 21:26:23,310 INFO L138 SettingsManager]: * DFS Order used in POR=RANDOM [2021-07-14 21:26:23,310 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-14 21:26:23,310 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-14 21:26:23,310 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-07-14 21:26:23,310 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-14 21:26:23,310 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2021-07-14 21:26:23,311 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-07-14 21:26:23,311 INFO L138 SettingsManager]: * Random seed used by POR DFS order=42 WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-14 21:26:23,529 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-14 21:26:23,552 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-14 21:26:23,554 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-14 21:26:23,554 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-14 21:26:23,555 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-14 21:26:23,556 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-bad/dot-product-alt.wvr.bpl [2021-07-14 21:26:23,556 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-bad/dot-product-alt.wvr.bpl' [2021-07-14 21:26:23,574 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-14 21:26:23,576 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-14 21:26:23,576 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-14 21:26:23,577 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-14 21:26:23,577 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-14 21:26:23,585 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "dot-product-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 09:26:23" (1/1) ... [2021-07-14 21:26:23,591 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "dot-product-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 09:26:23" (1/1) ... [2021-07-14 21:26:23,599 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-14 21:26:23,600 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-14 21:26:23,600 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-14 21:26:23,600 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-14 21:26:23,605 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "dot-product-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 09:26:23" (1/1) ... [2021-07-14 21:26:23,605 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "dot-product-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 09:26:23" (1/1) ... [2021-07-14 21:26:23,607 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "dot-product-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 09:26:23" (1/1) ... [2021-07-14 21:26:23,607 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "dot-product-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 09:26:23" (1/1) ... [2021-07-14 21:26:23,610 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "dot-product-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 09:26:23" (1/1) ... [2021-07-14 21:26:23,614 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "dot-product-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 09:26:23" (1/1) ... [2021-07-14 21:26:23,614 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "dot-product-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 09:26:23" (1/1) ... [2021-07-14 21:26:23,617 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-14 21:26:23,619 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-14 21:26:23,619 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-14 21:26:23,619 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-14 21:26:23,620 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "dot-product-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 09:26:23" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-14 21:26:23,677 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-14 21:26:23,677 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-14 21:26:23,677 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-14 21:26:23,677 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-14 21:26:23,677 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-14 21:26:23,677 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-14 21:26:23,678 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-14 21:26:23,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-14 21:26:23,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-14 21:26:23,678 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-07-14 21:26:23,678 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-07-14 21:26:23,678 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-07-14 21:26:23,679 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-14 21:26:23,821 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-14 21:26:23,821 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-07-14 21:26:23,823 INFO L202 PluginConnector]: Adding new model dot-product-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 09:26:23 BoogieIcfgContainer [2021-07-14 21:26:23,823 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-14 21:26:23,824 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-14 21:26:23,824 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-14 21:26:23,826 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-14 21:26:23,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "dot-product-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 09:26:23" (1/2) ... [2021-07-14 21:26:23,826 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cc9985b and model type dot-product-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 09:26:23, skipping insertion in model container [2021-07-14 21:26:23,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "dot-product-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 09:26:23" (2/2) ... [2021-07-14 21:26:23,827 INFO L111 eAbstractionObserver]: Analyzing ICFG dot-product-alt.wvr.bpl [2021-07-14 21:26:23,831 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-14 21:26:23,831 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-14 21:26:23,831 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-14 21:26:23,831 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-14 21:26:23,854 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-07-14 21:26:23,869 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-07-14 21:26:23,902 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-14 21:26:23,902 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-14 21:26:23,902 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-14 21:26:23,902 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-14 21:26:23,903 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-14 21:26:23,903 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-14 21:26:23,903 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-14 21:26:23,903 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-14 21:26:23,972 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 21:26:23,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 21:26:23,985 INFO L82 PathProgramCache]: Analyzing trace with hash -1608394815, now seen corresponding path program 1 times [2021-07-14 21:26:23,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 21:26:23,991 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582872017] [2021-07-14 21:26:23,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 21:26:24,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 21:26:24,127 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-14 21:26:24,127 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 21:26:24,127 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582872017] [2021-07-14 21:26:24,128 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582872017] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 21:26:24,128 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 21:26:24,128 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-14 21:26:24,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244907468] [2021-07-14 21:26:24,133 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-14 21:26:24,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 21:26:24,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-14 21:26:24,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-14 21:26:24,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 21:26:24,146 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 21:26:24,147 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 21:26:24,147 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 21:26:24,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 21:26:24,229 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-14 21:26:24,229 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 21:26:24,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 21:26:24,230 INFO L82 PathProgramCache]: Analyzing trace with hash -687268990, now seen corresponding path program 1 times [2021-07-14 21:26:24,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 21:26:24,230 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925175651] [2021-07-14 21:26:24,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 21:26:24,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 21:26:24,455 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 21:26:24,455 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 21:26:24,455 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925175651] [2021-07-14 21:26:24,455 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925175651] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 21:26:24,456 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874609869] [2021-07-14 21:26:24,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 21:26:24,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 21:26:24,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 16 conjunts are in the unsatisfiable core [2021-07-14 21:26:24,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 21:26:24,717 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 21:26:24,717 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 23 treesize of output 27 [2021-07-14 21:26:24,759 INFO L550 ElimStorePlain]: Start of recursive call 2: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2021-07-14 21:26:24,767 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 21:26:24,772 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 21:26:24,773 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 19 treesize of output 23 [2021-07-14 21:26:24,812 INFO L550 ElimStorePlain]: Start of recursive call 3: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2021-07-14 21:26:24,823 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 21:26:24,832 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 21:26:24,832 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 15 treesize of output 19 [2021-07-14 21:26:24,835 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 3 xjuncts. [2021-07-14 21:26:24,849 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 21:26:24,870 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-07-14 21:26:24,871 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:29, output treesize:15 [2021-07-14 21:26:24,921 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 21:26:24,921 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1874609869] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 21:26:24,921 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 21:26:24,922 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2021-07-14 21:26:24,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449423964] [2021-07-14 21:26:24,923 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-07-14 21:26:24,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 21:26:24,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-07-14 21:26:24,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-07-14 21:26:24,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 21:26:24,924 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 21:26:24,924 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 21:26:24,924 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 21:26:24,924 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 21:26:25,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 21:26:25,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-14 21:26:25,460 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 21:26:25,461 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 21:26:25,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 21:26:25,461 INFO L82 PathProgramCache]: Analyzing trace with hash 124562447, now seen corresponding path program 2 times [2021-07-14 21:26:25,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 21:26:25,461 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454748421] [2021-07-14 21:26:25,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 21:26:25,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 21:26:25,521 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 21:26:25,521 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 21:26:25,522 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454748421] [2021-07-14 21:26:25,522 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454748421] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 21:26:25,522 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030346395] [2021-07-14 21:26:25,522 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 21:26:25,555 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-14 21:26:25,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 21:26:25,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-07-14 21:26:25,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 21:26:25,653 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 21:26:25,654 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2030346395] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 21:26:25,654 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 21:26:25,654 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-07-14 21:26:25,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484094843] [2021-07-14 21:26:25,654 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-07-14 21:26:25,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 21:26:25,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-07-14 21:26:25,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-07-14 21:26:25,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 21:26:25,655 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 21:26:25,655 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 21:26:25,655 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 21:26:25,655 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-07-14 21:26:25,656 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 21:26:25,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 21:26:25,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-14 21:26:25,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-14 21:26:26,020 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-07-14 21:26:26,021 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 21:26:26,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 21:26:26,021 INFO L82 PathProgramCache]: Analyzing trace with hash 755154612, now seen corresponding path program 1 times [2021-07-14 21:26:26,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 21:26:26,022 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479257534] [2021-07-14 21:26:26,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 21:26:26,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 21:26:26,065 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-14 21:26:26,065 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 21:26:26,065 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479257534] [2021-07-14 21:26:26,065 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479257534] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 21:26:26,065 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1338905116] [2021-07-14 21:26:26,065 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) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 21:26:26,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 21:26:26,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 5 conjunts are in the unsatisfiable core [2021-07-14 21:26:26,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 21:26:26,174 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-14 21:26:26,174 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1338905116] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 21:26:26,174 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 21:26:26,174 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2021-07-14 21:26:26,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613081096] [2021-07-14 21:26:26,175 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-14 21:26:26,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 21:26:26,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-14 21:26:26,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-07-14 21:26:26,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 21:26:26,176 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 21:26:26,176 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 21:26:26,176 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 21:26:26,176 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-07-14 21:26:26,176 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2021-07-14 21:26:26,176 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 21:26:26,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 21:26:26,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-14 21:26:26,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-14 21:26:26,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 21:26:26,440 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 21:26:26,441 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 21:26:26,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 21:26:26,441 INFO L82 PathProgramCache]: Analyzing trace with hash 218293149, now seen corresponding path program 2 times [2021-07-14 21:26:26,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 21:26:26,441 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574705687] [2021-07-14 21:26:26,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 21:26:26,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 21:26:26,722 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 21:26:26,722 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 21:26:26,722 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574705687] [2021-07-14 21:26:26,722 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574705687] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 21:26:26,722 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521063309] [2021-07-14 21:26:26,722 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) [2021-07-14 21:26:26,759 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-14 21:26:26,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 21:26:26,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-07-14 21:26:26,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 21:26:30,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:26:30,174 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 21:26:30,175 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 35 [2021-07-14 21:26:30,177 INFO L550 ElimStorePlain]: Start of recursive call 2: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2021-07-14 21:26:30,183 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 21:26:30,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:26:30,185 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 21:26:30,186 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2021-07-14 21:26:30,188 INFO L550 ElimStorePlain]: Start of recursive call 3: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2021-07-14 21:26:30,193 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 21:26:30,205 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 21:26:30,205 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 27 treesize of output 23 [2021-07-14 21:26:30,213 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-07-14 21:26:30,221 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 21:26:30,224 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-07-14 21:26:30,224 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:49, output treesize:3 [2021-07-14 21:26:30,245 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 21:26:30,246 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1521063309] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 21:26:30,246 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 21:26:30,246 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12] total 24 [2021-07-14 21:26:30,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633812321] [2021-07-14 21:26:30,246 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-07-14 21:26:30,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 21:26:30,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-07-14 21:26:30,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=468, Unknown=4, NotChecked=0, Total=552 [2021-07-14 21:26:30,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 21:26:30,254 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 21:26:30,254 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 2.2083333333333335) internal successors, (53), 24 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 21:26:30,254 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 21:26:30,254 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-07-14 21:26:30,254 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2021-07-14 21:26:30,254 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 21:26:30,255 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 21:26:41,606 WARN L205 SmtUtils]: Spent 1.82 s on a formula simplification. DAG size of input: 56 DAG size of output: 42 [2021-07-14 21:26:43,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 21:26:43,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-14 21:26:43,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-14 21:26:43,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 21:26:43,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-07-14 21:26:43,527 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 21:26:43,527 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 21:26:43,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 21:26:43,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1036659220, now seen corresponding path program 3 times [2021-07-14 21:26:43,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 21:26:43,528 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459855788] [2021-07-14 21:26:43,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 21:26:43,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 21:26:43,579 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 21:26:43,580 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 21:26:43,580 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459855788] [2021-07-14 21:26:43,580 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459855788] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 21:26:43,580 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [913139743] [2021-07-14 21:26:43,580 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 [2021-07-14 21:26:43,612 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-07-14 21:26:43,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 21:26:43,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-07-14 21:26:43,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 21:26:43,708 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 21:26:43,709 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [913139743] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 21:26:43,709 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 21:26:43,709 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2021-07-14 21:26:43,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900611876] [2021-07-14 21:26:43,710 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-07-14 21:26:43,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 21:26:43,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-07-14 21:26:43,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2021-07-14 21:26:43,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 21:26:43,711 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 21:26:43,711 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 15 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 21:26:43,711 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 21:26:43,711 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-07-14 21:26:43,711 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2021-07-14 21:26:43,711 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 21:26:43,711 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2021-07-14 21:26:43,711 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 21:26:44,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 21:26:44,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-14 21:26:44,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-14 21:26:44,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 21:26:44,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-07-14 21:26:44,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-07-14 21:26:45,004 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 21:26:45,004 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 21:26:45,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 21:26:45,005 INFO L82 PathProgramCache]: Analyzing trace with hash 820894031, now seen corresponding path program 4 times [2021-07-14 21:26:45,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 21:26:45,005 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14999833] [2021-07-14 21:26:45,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 21:26:45,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 21:26:45,071 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-14 21:26:45,071 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 21:26:45,071 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14999833] [2021-07-14 21:26:45,071 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14999833] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 21:26:45,071 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637463308] [2021-07-14 21:26:45,071 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 [2021-07-14 21:26:45,099 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-07-14 21:26:45,099 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 21:26:45,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2021-07-14 21:26:45,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 21:26:45,184 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-14 21:26:45,184 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1637463308] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 21:26:45,184 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 21:26:45,184 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2021-07-14 21:26:45,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323601467] [2021-07-14 21:26:45,185 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-14 21:26:45,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 21:26:45,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-14 21:26:45,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-07-14 21:26:45,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 21:26:45,185 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 21:26:45,185 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 21:26:45,185 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 21:26:45,186 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-07-14 21:26:45,186 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2021-07-14 21:26:45,186 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 21:26:45,186 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2021-07-14 21:26:45,186 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2021-07-14 21:26:45,186 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 21:26:45,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 21:26:45,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-14 21:26:45,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-14 21:26:45,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 21:26:45,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-07-14 21:26:45,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-07-14 21:26:45,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 21:26:45,505 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 21:26:45,505 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 21:26:45,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 21:26:45,505 INFO L82 PathProgramCache]: Analyzing trace with hash 156237602, now seen corresponding path program 5 times [2021-07-14 21:26:45,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 21:26:45,506 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984396174] [2021-07-14 21:26:45,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 21:26:45,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 21:26:45,965 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 21:26:45,965 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 21:26:45,974 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984396174] [2021-07-14 21:26:45,974 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984396174] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 21:26:45,974 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533873312] [2021-07-14 21:26:45,974 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 [2021-07-14 21:26:46,005 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-07-14 21:26:46,005 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 21:26:46,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 32 conjunts are in the unsatisfiable core [2021-07-14 21:26:46,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 21:26:53,030 WARN L205 SmtUtils]: Spent 872.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2021-07-14 21:26:53,956 WARN L205 SmtUtils]: Spent 862.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2021-07-14 21:26:54,801 WARN L205 SmtUtils]: Spent 802.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2021-07-14 21:26:55,709 WARN L205 SmtUtils]: Spent 868.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2021-07-14 21:26:55,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:26:55,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:26:55,729 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 21:26:55,730 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 61 treesize of output 49 [2021-07-14 21:26:55,732 INFO L550 ElimStorePlain]: Start of recursive call 2: 3 dim-0 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2021-07-14 21:26:55,739 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 21:26:55,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:26:55,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:26:55,742 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 21:26:55,742 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 49 treesize of output 37 [2021-07-14 21:26:55,745 INFO L550 ElimStorePlain]: Start of recursive call 3: 3 dim-0 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2021-07-14 21:26:55,751 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 21:26:55,765 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 21:26:55,765 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 37 treesize of output 49 [2021-07-14 21:26:55,778 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-07-14 21:26:55,841 INFO L628 ElimStorePlain]: treesize reduction 68, result has 33.3 percent of original size [2021-07-14 21:26:55,844 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-07-14 21:26:55,845 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:67, output treesize:3 [2021-07-14 21:26:55,866 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 21:26:55,866 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [533873312] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 21:26:55,867 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 21:26:55,867 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16] total 32 [2021-07-14 21:26:55,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56749156] [2021-07-14 21:26:55,867 INFO L462 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-07-14 21:26:55,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 21:26:55,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-07-14 21:26:55,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=873, Unknown=6, NotChecked=0, Total=992 [2021-07-14 21:26:55,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 21:26:55,868 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 21:26:55,868 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 2.03125) internal successors, (65), 32 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 21:26:55,868 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 21:26:55,868 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-07-14 21:26:55,868 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2021-07-14 21:26:55,868 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 21:26:55,868 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2021-07-14 21:26:55,868 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2021-07-14 21:26:55,868 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 21:26:55,868 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 21:27:25,801 WARN L205 SmtUtils]: Spent 2.52 s on a formula simplification. DAG size of input: 69 DAG size of output: 54 [2021-07-14 21:27:31,335 WARN L205 SmtUtils]: Spent 828.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 41 [2021-07-14 21:27:33,231 WARN L205 SmtUtils]: Spent 1.85 s on a formula simplification. DAG size of input: 52 DAG size of output: 41 [2021-07-14 21:27:34,143 WARN L205 SmtUtils]: Spent 877.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-07-14 21:27:35,092 WARN L205 SmtUtils]: Spent 907.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2021-07-14 21:27:35,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 21:27:35,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-14 21:27:35,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-14 21:27:35,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 21:27:35,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-07-14 21:27:35,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-07-14 21:27:35,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 21:27:35,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-07-14 21:27:35,354 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-07-14 21:27:35,355 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 21:27:35,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 21:27:35,355 INFO L82 PathProgramCache]: Analyzing trace with hash -824204177, now seen corresponding path program 6 times [2021-07-14 21:27:35,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 21:27:35,355 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689198863] [2021-07-14 21:27:35,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 21:27:35,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 21:27:35,428 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 17 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 21:27:35,428 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 21:27:35,428 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689198863] [2021-07-14 21:27:35,428 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689198863] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 21:27:35,428 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [860059424] [2021-07-14 21:27:35,428 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 [2021-07-14 21:27:35,456 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-07-14 21:27:35,457 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 21:27:35,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 11 conjunts are in the unsatisfiable core [2021-07-14 21:27:35,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 21:27:35,578 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 17 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 21:27:35,578 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [860059424] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 21:27:35,578 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 21:27:35,578 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 18 [2021-07-14 21:27:35,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652457104] [2021-07-14 21:27:35,581 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-14 21:27:35,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 21:27:35,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-14 21:27:35,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2021-07-14 21:27:35,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 21:27:35,581 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 21:27:35,581 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 18 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 21:27:35,581 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 21:27:35,581 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-07-14 21:27:35,582 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2021-07-14 21:27:35,582 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 21:27:35,582 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2021-07-14 21:27:35,582 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2021-07-14 21:27:35,582 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 21:27:35,582 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 32 states. [2021-07-14 21:27:35,582 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 21:27:38,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 21:27:38,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-14 21:27:38,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-14 21:27:38,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 21:27:38,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-07-14 21:27:38,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-07-14 21:27:38,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 21:27:38,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-07-14 21:27:38,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-07-14 21:27:38,608 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-07-14 21:27:38,609 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 21:27:38,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 21:27:38,609 INFO L82 PathProgramCache]: Analyzing trace with hash -1769408771, now seen corresponding path program 7 times [2021-07-14 21:27:38,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 21:27:38,609 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391642141] [2021-07-14 21:27:38,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 21:27:38,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 21:27:39,221 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 1 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 21:27:39,222 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 21:27:39,222 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391642141] [2021-07-14 21:27:39,222 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391642141] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 21:27:39,222 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450593029] [2021-07-14 21:27:39,222 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 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 21:27:39,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 21:27:39,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 40 conjunts are in the unsatisfiable core [2021-07-14 21:27:39,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 21:27:49,988 WARN L205 SmtUtils]: Spent 1.02 s on a formula simplification that was a NOOP. DAG size: 40 [2021-07-14 21:27:51,082 WARN L205 SmtUtils]: Spent 989.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2021-07-14 21:27:52,103 WARN L205 SmtUtils]: Spent 978.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2021-07-14 21:27:53,171 WARN L205 SmtUtils]: Spent 1.02 s on a formula simplification that was a NOOP. DAG size: 41 [2021-07-14 21:27:54,292 WARN L205 SmtUtils]: Spent 1.08 s on a formula simplification that was a NOOP. DAG size: 37 [2021-07-14 21:27:54,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:27:54,309 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 21:27:54,309 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 63 [2021-07-14 21:27:54,316 INFO L550 ElimStorePlain]: Start of recursive call 2: 4 dim-0 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2021-07-14 21:27:54,323 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 21:27:54,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:27:54,326 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 21:27:54,326 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 47 [2021-07-14 21:27:54,329 INFO L550 ElimStorePlain]: Start of recursive call 3: 4 dim-0 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2021-07-14 21:27:54,335 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 21:27:54,361 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 21:27:54,362 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 47 treesize of output 87 [2021-07-14 21:27:54,728 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-07-14 21:27:55,344 WARN L205 SmtUtils]: Spent 615.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 96 [2021-07-14 21:27:55,344 INFO L628 ElimStorePlain]: treesize reduction 1034, result has 44.5 percent of original size [2021-07-14 21:27:55,408 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-07-14 21:27:55,408 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:85, output treesize:3 [2021-07-14 21:27:55,430 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 21:27:55,430 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1450593029] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 21:27:55,431 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 21:27:55,431 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 20] total 40 [2021-07-14 21:27:55,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238026880] [2021-07-14 21:27:55,431 INFO L462 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-07-14 21:27:55,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 21:27:55,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-07-14 21:27:55,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1403, Unknown=8, NotChecked=0, Total=1560 [2021-07-14 21:27:55,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 21:27:55,432 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 21:27:55,432 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 40 states, 40 states have (on average 1.925) internal successors, (77), 40 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 21:27:55,432 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 21:27:55,432 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-07-14 21:27:55,432 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2021-07-14 21:27:55,432 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 21:27:55,432 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2021-07-14 21:27:55,432 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2021-07-14 21:27:55,433 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 21:27:55,433 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 39 states. [2021-07-14 21:27:55,433 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2021-07-14 21:27:55,433 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 21:28:46,790 WARN L205 SmtUtils]: Spent 3.00 s on a formula simplification. DAG size of input: 87 DAG size of output: 67 [2021-07-14 21:28:54,704 WARN L205 SmtUtils]: Spent 2.09 s on a formula simplification. DAG size of input: 63 DAG size of output: 41 [2021-07-14 21:28:56,987 WARN L205 SmtUtils]: Spent 2.23 s on a formula simplification. DAG size of input: 64 DAG size of output: 46 [2021-07-14 21:28:59,318 WARN L205 SmtUtils]: Spent 2.28 s on a formula simplification. DAG size of input: 58 DAG size of output: 42 [2021-07-14 21:29:01,628 WARN L205 SmtUtils]: Spent 2.25 s on a formula simplification. DAG size of input: 58 DAG size of output: 46 [2021-07-14 21:29:02,772 WARN L205 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 47 [2021-07-14 21:29:04,011 WARN L205 SmtUtils]: Spent 1.17 s on a formula simplification that was a NOOP. DAG size: 43 [2021-07-14 21:29:04,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 21:29:04,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-14 21:29:04,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-14 21:29:04,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 21:29:04,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-07-14 21:29:04,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-07-14 21:29:04,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 21:29:04,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-07-14 21:29:04,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-07-14 21:29:04,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-07-14 21:29:04,268 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-07-14 21:29:04,269 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 21:29:04,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 21:29:04,269 INFO L82 PathProgramCache]: Analyzing trace with hash 122870452, now seen corresponding path program 8 times [2021-07-14 21:29:04,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 21:29:04,269 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691389905] [2021-07-14 21:29:04,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 21:29:04,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 21:29:04,351 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 28 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 21:29:04,351 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 21:29:04,351 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691389905] [2021-07-14 21:29:04,351 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691389905] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 21:29:04,351 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346701934] [2021-07-14 21:29:04,351 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 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 21:29:04,380 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-14 21:29:04,381 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 21:29:04,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 13 conjunts are in the unsatisfiable core [2021-07-14 21:29:04,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 21:29:04,509 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 28 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 21:29:04,509 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346701934] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 21:29:04,509 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 21:29:04,510 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 21 [2021-07-14 21:29:04,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716958161] [2021-07-14 21:29:04,510 INFO L462 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-07-14 21:29:04,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 21:29:04,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-07-14 21:29:04,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2021-07-14 21:29:04,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 21:29:04,511 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 21:29:04,511 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 3.1904761904761907) internal successors, (67), 21 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 21:29:04,511 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 21:29:04,511 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-07-14 21:29:04,511 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2021-07-14 21:29:04,511 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 21:29:04,511 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2021-07-14 21:29:04,511 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2021-07-14 21:29:04,511 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 21:29:04,511 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 39 states. [2021-07-14 21:29:04,511 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2021-07-14 21:29:04,511 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 38 states. [2021-07-14 21:29:04,511 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 21:29:06,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 21:29:06,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-14 21:29:06,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-14 21:29:06,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 21:29:06,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-07-14 21:29:06,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-07-14 21:29:06,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 21:29:06,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-07-14 21:29:06,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-07-14 21:29:06,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-07-14 21:29:06,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-07-14 21:29:06,791 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2021-07-14 21:29:06,791 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 21:29:06,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 21:29:06,791 INFO L82 PathProgramCache]: Analyzing trace with hash -1024750910, now seen corresponding path program 9 times [2021-07-14 21:29:06,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 21:29:06,792 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345370200] [2021-07-14 21:29:06,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 21:29:06,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 21:29:07,544 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 5 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 21:29:07,544 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 21:29:07,544 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345370200] [2021-07-14 21:29:07,544 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345370200] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 21:29:07,544 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237279772] [2021-07-14 21:29:07,545 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 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 21:29:07,582 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-07-14 21:29:07,582 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 21:29:07,583 WARN L261 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 52 conjunts are in the unsatisfiable core [2021-07-14 21:29:07,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 21:29:28,678 WARN L205 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 53 [2021-07-14 21:29:30,765 WARN L205 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 57 [2021-07-14 21:29:32,151 WARN L205 SmtUtils]: Spent 1.32 s on a formula simplification that was a NOOP. DAG size: 53 [2021-07-14 21:29:34,253 WARN L205 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 57 [2021-07-14 21:29:36,480 WARN L205 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 59 [2021-07-14 21:29:36,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:29:36,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:29:36,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:29:36,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:29:36,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:29:36,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:29:36,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:29:36,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:29:36,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:29:36,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:29:36,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:29:36,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:29:36,553 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 21:29:36,554 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 22 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 6 case distinctions, treesize of input 101 treesize of output 133 [2021-07-14 21:29:38,738 INFO L550 ElimStorePlain]: Start of recursive call 2: 8 dim-0 vars, End of recursive call: 8 dim-0 vars, and 1 xjuncts. [2021-07-14 21:29:38,794 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 21:29:38,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:29:38,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:29:38,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:29:38,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:29:38,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:29:38,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:29:38,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:29:38,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:29:38,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:29:38,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:29:38,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:29:38,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:29:38,836 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 21:29:38,836 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 22 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 6 case distinctions, treesize of input 79 treesize of output 111 [2021-07-14 21:29:40,068 INFO L550 ElimStorePlain]: Start of recursive call 3: 8 dim-0 vars, End of recursive call: 8 dim-0 vars, and 1 xjuncts. [2021-07-14 21:29:40,153 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 21:29:40,396 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2021-07-14 21:29:40,397 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 21:29:40,397 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 57 treesize of output 353 [2021-07-14 21:29:40,693 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 175 [2021-07-14 21:29:41,119 WARN L205 SmtUtils]: Spent 423.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 200 [2021-07-14 21:29:42,225 WARN L205 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 244 DAG size of output: 225 [2021-07-14 21:29:44,983 WARN L205 SmtUtils]: Spent 2.76 s on a formula simplification. DAG size of input: 281 DAG size of output: 249 [2021-07-14 21:29:51,615 WARN L205 SmtUtils]: Spent 6.63 s on a formula simplification. DAG size of input: 320 DAG size of output: 288 [2021-07-14 21:30:07,257 WARN L205 SmtUtils]: Spent 15.64 s on a formula simplification. DAG size of input: 362 DAG size of output: 311 [2021-07-14 21:30:22,776 WARN L205 SmtUtils]: Spent 15.52 s on a formula simplification. DAG size of input: 362 DAG size of output: 311 [2021-07-14 21:30:39,820 WARN L205 SmtUtils]: Spent 17.04 s on a formula simplification. DAG size of input: 412 DAG size of output: 359 [2021-07-14 21:31:36,173 WARN L205 SmtUtils]: Spent 56.35 s on a formula simplification. DAG size of input: 343 DAG size of output: 370 [2021-07-14 21:32:32,716 WARN L205 SmtUtils]: Spent 56.52 s on a formula simplification. DAG size of input: 338 DAG size of output: 359 [2021-07-14 21:33:29,649 WARN L205 SmtUtils]: Spent 56.93 s on a formula simplification. DAG size of input: 333 DAG size of output: 360 [2021-07-14 21:34:23,329 WARN L205 SmtUtils]: Spent 53.68 s on a formula simplification. DAG size of input: 328 DAG size of output: 363 [2021-07-14 21:35:18,982 WARN L205 SmtUtils]: Spent 55.65 s on a formula simplification. DAG size of input: 323 DAG size of output: 329 [2021-07-14 21:36:15,142 WARN L205 SmtUtils]: Spent 56.16 s on a formula simplification. DAG size of input: 318 DAG size of output: 324 [2021-07-14 21:37:10,391 WARN L205 SmtUtils]: Spent 55.24 s on a formula simplification. DAG size of input: 313 DAG size of output: 343 [2021-07-14 21:37:26,127 WARN L205 SmtUtils]: Spent 15.73 s on a formula simplification. DAG size of input: 305 DAG size of output: 305 [2021-07-14 21:37:32,812 WARN L205 SmtUtils]: Spent 6.67 s on a formula simplification. DAG size of input: 286 DAG size of output: 286 [2021-07-14 21:37:35,601 WARN L205 SmtUtils]: Spent 2.79 s on a formula simplification. DAG size of input: 247 DAG size of output: 247 [2021-07-14 21:37:36,734 WARN L205 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 230 DAG size of output: 230 [2021-07-14 21:37:37,182 WARN L205 SmtUtils]: Spent 445.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 209 [2021-07-14 21:37:37,355 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 187 [2021-07-14 21:37:37,800 WARN L205 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 256 DAG size of output: 236 [2021-07-14 21:37:38,365 WARN L205 SmtUtils]: Spent 562.00 ms on a formula simplification. DAG size of input: 301 DAG size of output: 273 [2021-07-14 21:37:39,839 WARN L205 SmtUtils]: Spent 1.47 s on a formula simplification. DAG size of input: 341 DAG size of output: 310 [2021-07-14 21:37:43,558 WARN L205 SmtUtils]: Spent 3.71 s on a formula simplification. DAG size of input: 388 DAG size of output: 348 [2021-07-14 21:37:43,821 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 153 [2021-07-14 21:37:44,237 WARN L205 SmtUtils]: Spent 414.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 178 [2021-07-14 21:37:45,292 WARN L205 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 225 DAG size of output: 218 [2021-07-14 21:37:55,663 WARN L205 SmtUtils]: Spent 10.37 s on a formula simplification. DAG size of input: 509 DAG size of output: 446 [2021-07-14 21:38:20,070 WARN L205 SmtUtils]: Spent 24.40 s on a formula simplification. DAG size of input: 548 DAG size of output: 482 [2021-07-14 21:39:17,731 WARN L205 SmtUtils]: Spent 57.65 s on a formula simplification. DAG size of input: 631 DAG size of output: 552 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown