/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleepPersistentFixedOrder-NoLbe-Lockstep.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/min-array.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-a47a088281b0b97d17910950432b7c5b5bc3adeb-a47a088 [2021-07-14 19:17:50,870 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-14 19:17:50,872 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-14 19:17:50,902 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-14 19:17:50,902 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-14 19:17:50,905 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-14 19:17:50,907 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-14 19:17:50,912 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-14 19:17:50,914 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-14 19:17:50,918 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-14 19:17:50,918 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-14 19:17:50,919 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-14 19:17:50,920 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-14 19:17:50,921 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-14 19:17:50,923 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-14 19:17:50,924 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-14 19:17:50,926 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-14 19:17:50,927 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-14 19:17:50,929 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-14 19:17:50,937 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-14 19:17:50,938 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-14 19:17:50,939 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-14 19:17:50,940 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-14 19:17:50,942 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-14 19:17:50,947 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-14 19:17:50,947 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-14 19:17:50,948 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-14 19:17:50,949 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-14 19:17:50,949 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-14 19:17:50,950 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-14 19:17:50,950 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-14 19:17:50,952 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-14 19:17:50,953 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-14 19:17:50,954 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-14 19:17:50,955 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-14 19:17:50,955 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-14 19:17:50,956 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-14 19:17:50,956 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-14 19:17:50,956 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-14 19:17:50,957 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-14 19:17:50,957 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-14 19:17:50,958 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleepPersistentFixedOrder-NoLbe-Lockstep.epf [2021-07-14 19:17:50,993 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-14 19:17:50,994 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-14 19:17:50,994 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-14 19:17:50,994 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-14 19:17:50,996 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-14 19:17:50,997 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-14 19:17:50,997 INFO L138 SettingsManager]: * Use SBE=true [2021-07-14 19:17:50,997 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-14 19:17:50,997 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-14 19:17:50,997 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-14 19:17:50,998 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-14 19:17:50,998 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-14 19:17:50,998 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-14 19:17:50,998 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-14 19:17:50,999 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-14 19:17:51,012 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-14 19:17:51,013 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-14 19:17:51,013 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-14 19:17:51,013 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-14 19:17:51,013 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-14 19:17:51,013 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-14 19:17:51,013 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-14 19:17:51,014 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-14 19:17:51,014 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-14 19:17:51,014 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-14 19:17:51,014 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-14 19:17:51,014 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-14 19:17:51,014 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-14 19:17:51,015 INFO L138 SettingsManager]: * DFS Order used in POR=PSEUDO_LOCKSTEP [2021-07-14 19:17:51,015 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-14 19:17:51,015 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-14 19:17:51,015 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-07-14 19:17:51,015 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-14 19:17:51,015 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2021-07-14 19:17:51,015 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-14 19:17:51,289 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-14 19:17:51,307 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-14 19:17:51,309 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-14 19:17:51,310 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-14 19:17:51,312 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-14 19:17:51,312 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/min-array.wvr.bpl [2021-07-14 19:17:51,313 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/min-array.wvr.bpl' [2021-07-14 19:17:51,334 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-14 19:17:51,335 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-14 19:17:51,336 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-14 19:17:51,336 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-14 19:17:51,336 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-14 19:17:51,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "min-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 07:17:51" (1/1) ... [2021-07-14 19:17:51,355 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "min-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 07:17:51" (1/1) ... [2021-07-14 19:17:51,361 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-14 19:17:51,363 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-14 19:17:51,363 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-14 19:17:51,363 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-14 19:17:51,369 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "min-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 07:17:51" (1/1) ... [2021-07-14 19:17:51,369 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "min-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 07:17:51" (1/1) ... [2021-07-14 19:17:51,370 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "min-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 07:17:51" (1/1) ... [2021-07-14 19:17:51,370 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "min-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 07:17:51" (1/1) ... [2021-07-14 19:17:51,372 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "min-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 07:17:51" (1/1) ... [2021-07-14 19:17:51,375 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "min-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 07:17:51" (1/1) ... [2021-07-14 19:17:51,375 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "min-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 07:17:51" (1/1) ... [2021-07-14 19:17:51,376 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-14 19:17:51,377 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-14 19:17:51,377 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-14 19:17:51,378 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-14 19:17:51,379 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "min-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 07:17:51" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-14 19:17:51,454 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-14 19:17:51,454 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-14 19:17:51,454 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-14 19:17:51,454 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-14 19:17:51,455 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-14 19:17:51,455 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-14 19:17:51,455 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-14 19:17:51,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-14 19:17:51,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-14 19:17:51,456 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-07-14 19:17:51,456 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-07-14 19:17:51,456 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-07-14 19:17:51,457 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-14 19:17:51,647 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-14 19:17:51,647 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-07-14 19:17:51,649 INFO L202 PluginConnector]: Adding new model min-array.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 07:17:51 BoogieIcfgContainer [2021-07-14 19:17:51,649 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-14 19:17:51,651 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-14 19:17:51,651 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-14 19:17:51,654 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-14 19:17:51,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "min-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 07:17:51" (1/2) ... [2021-07-14 19:17:51,655 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@111cdfdc and model type min-array.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 07:17:51, skipping insertion in model container [2021-07-14 19:17:51,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "min-array.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 07:17:51" (2/2) ... [2021-07-14 19:17:51,656 INFO L111 eAbstractionObserver]: Analyzing ICFG min-array.wvr.bpl [2021-07-14 19:17:51,661 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-14 19:17:51,661 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-14 19:17:51,661 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-14 19:17:51,661 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-14 19:17:51,694 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-07-14 19:17:51,713 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-07-14 19:17:51,817 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-14 19:17:51,817 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-14 19:17:51,817 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-14 19:17:51,817 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-14 19:17:51,818 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-14 19:17:51,818 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-14 19:17:51,818 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-14 19:17:51,818 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-14 19:17:51,947 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 19:17:51,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 19:17:51,952 INFO L82 PathProgramCache]: Analyzing trace with hash -1567474097, now seen corresponding path program 1 times [2021-07-14 19:17:51,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 19:17:51,962 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760050882] [2021-07-14 19:17:51,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 19:17:52,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 19:17:52,232 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-07-14 19:17:52,233 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 19:17:52,233 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760050882] [2021-07-14 19:17:52,234 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760050882] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 19:17:52,234 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146393650] [2021-07-14 19:17:52,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 19:17:52,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 19:17:52,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 5 conjunts are in the unsatisfiable core [2021-07-14 19:17:52,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 19:17:52,507 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-07-14 19:17:52,508 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1146393650] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 19:17:52,508 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 19:17:52,508 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2021-07-14 19:17:52,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567278218] [2021-07-14 19:17:52,513 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-14 19:17:52,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 19:17:52,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-14 19:17:52,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-07-14 19:17:52,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 19:17:52,539 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 19:17:52,542 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 19:17:52,542 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 19:17:52,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 19:17:52,893 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-07-14 19:17:52,893 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 19:17:52,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 19:17:52,894 INFO L82 PathProgramCache]: Analyzing trace with hash 578274737, now seen corresponding path program 2 times [2021-07-14 19:17:52,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 19:17:52,895 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613342563] [2021-07-14 19:17:52,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 19:17:52,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 19:17:53,015 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-07-14 19:17:53,016 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 19:17:53,016 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613342563] [2021-07-14 19:17:53,016 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613342563] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 19:17:53,016 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756303919] [2021-07-14 19:17:53,016 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 19:17:53,072 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-14 19:17:53,073 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 19:17:53,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 7 conjunts are in the unsatisfiable core [2021-07-14 19:17:53,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 19:17:53,223 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-07-14 19:17:53,223 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756303919] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 19:17:53,224 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 19:17:53,224 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-07-14 19:17:53,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195393769] [2021-07-14 19:17:53,225 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-14 19:17:53,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 19:17:53,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-14 19:17:53,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-07-14 19:17:53,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 19:17:53,229 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 19:17:53,229 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 19:17:53,229 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 19:17:53,230 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 19:17:53,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 19:17:53,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 19:17:53,571 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 19:17:53,572 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 19:17:53,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 19:17:53,572 INFO L82 PathProgramCache]: Analyzing trace with hash 1058602131, now seen corresponding path program 3 times [2021-07-14 19:17:53,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 19:17:53,572 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545988098] [2021-07-14 19:17:53,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 19:17:53,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 19:17:53,682 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 19:17:53,683 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 19:17:53,683 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545988098] [2021-07-14 19:17:53,683 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545988098] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 19:17:53,683 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111885979] [2021-07-14 19:17:53,683 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 19:17:53,726 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-07-14 19:17:53,726 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 19:17:53,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 9 conjunts are in the unsatisfiable core [2021-07-14 19:17:53,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 19:17:53,882 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 19:17:53,882 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2111885979] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 19:17:53,883 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 19:17:53,883 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-07-14 19:17:53,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009902930] [2021-07-14 19:17:53,883 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-07-14 19:17:53,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 19:17:53,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-07-14 19:17:53,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2021-07-14 19:17:53,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 19:17:53,885 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 19:17:53,885 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 19:17:53,885 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 19:17:53,885 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 19:17:53,885 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 19:17:54,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 19:17:54,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 19:17:54,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-14 19:17:54,297 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 19:17:54,298 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 19:17:54,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 19:17:54,299 INFO L82 PathProgramCache]: Analyzing trace with hash -1203240203, now seen corresponding path program 4 times [2021-07-14 19:17:54,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 19:17:54,299 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547018579] [2021-07-14 19:17:54,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 19:17:54,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 19:17:55,130 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 42 [2021-07-14 19:17:55,587 WARN L205 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 83 [2021-07-14 19:17:55,831 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 42 [2021-07-14 19:17:56,277 WARN L205 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 70 [2021-07-14 19:17:56,889 WARN L205 SmtUtils]: Spent 512.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 88 [2021-07-14 19:17:57,354 WARN L205 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 82 [2021-07-14 19:17:57,585 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 50 [2021-07-14 19:17:57,868 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 19:17:57,868 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 19:17:57,868 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547018579] [2021-07-14 19:17:57,869 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547018579] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 19:17:57,869 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174453092] [2021-07-14 19:17:57,869 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 19:17:57,907 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-07-14 19:17:57,907 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 19:17:57,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 40 conjunts are in the unsatisfiable core [2021-07-14 19:17:57,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 19:17:59,094 WARN L205 SmtUtils]: Spent 522.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2021-07-14 19:17:59,768 WARN L205 SmtUtils]: Spent 427.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2021-07-14 19:18:01,486 WARN L205 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 208 DAG size of output: 190 [2021-07-14 19:18:03,358 WARN L205 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 223 [2021-07-14 19:18:08,102 WARN L205 SmtUtils]: Spent 3.38 s on a formula simplification. DAG size of input: 1156 DAG size of output: 784 [2021-07-14 19:18:09,995 WARN L205 SmtUtils]: Spent 699.00 ms on a formula simplification. DAG size of input: 582 DAG size of output: 91 [2021-07-14 19:18:10,261 INFO L446 ElimStorePlain]: Different costs {0=[A, v_prenex_131, v_prenex_132], 7=[v_prenex_129, v_prenex_130, v_prenex_127, v_prenex_128]} [2021-07-14 19:18:10,279 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-07-14 19:18:10,281 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-14 19:18:10,359 INFO L628 ElimStorePlain]: treesize reduction 464, result has 3.1 percent of original size [2021-07-14 19:18:10,359 INFO L518 ElimStorePlain]: Eliminatee v_prenex_131 vanished before elimination [2021-07-14 19:18:10,359 INFO L518 ElimStorePlain]: Eliminatee v_prenex_132 vanished before elimination [2021-07-14 19:18:10,360 INFO L518 ElimStorePlain]: Eliminatee v_prenex_129 vanished before elimination [2021-07-14 19:18:10,360 INFO L518 ElimStorePlain]: Eliminatee v_prenex_130 vanished before elimination [2021-07-14 19:18:10,360 INFO L518 ElimStorePlain]: Eliminatee v_prenex_127 vanished before elimination [2021-07-14 19:18:10,360 INFO L518 ElimStorePlain]: Eliminatee v_prenex_128 vanished before elimination [2021-07-14 19:18:10,365 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 7 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-07-14 19:18:10,365 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 15 variables, input treesize:502, output treesize:15 [2021-07-14 19:18:10,444 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 19:18:10,445 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [174453092] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 19:18:10,445 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 19:18:10,445 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16] total 27 [2021-07-14 19:18:10,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525066787] [2021-07-14 19:18:10,446 INFO L462 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-07-14 19:18:10,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 19:18:10,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-07-14 19:18:10,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=617, Unknown=0, NotChecked=0, Total=702 [2021-07-14 19:18:10,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 19:18:10,448 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 19:18:10,448 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 2.3703703703703702) internal successors, (64), 27 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 19:18:10,448 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 19:18:10,448 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 19:18:10,448 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2021-07-14 19:18:10,448 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 19:18:10,776 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 38 [2021-07-14 19:18:11,118 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 50 [2021-07-14 19:18:11,486 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 54 [2021-07-14 19:18:11,705 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 54 [2021-07-14 19:18:11,904 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 68 [2021-07-14 19:18:12,097 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 69 [2021-07-14 19:18:12,354 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 76 [2021-07-14 19:18:12,647 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 77 [2021-07-14 19:18:13,805 WARN L205 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 158 DAG size of output: 128 [2021-07-14 19:18:14,107 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 78 [2021-07-14 19:18:16,206 WARN L205 SmtUtils]: Spent 1.93 s on a formula simplification. DAG size of input: 309 DAG size of output: 246 [2021-07-14 19:18:17,284 WARN L205 SmtUtils]: Spent 946.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 102 [2021-07-14 19:18:17,653 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 41 [2021-07-14 19:18:17,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 19:18:17,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 19:18:17,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-14 19:18:17,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-07-14 19:18:18,137 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 19:18:18,137 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 19:18:18,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 19:18:18,138 INFO L82 PathProgramCache]: Analyzing trace with hash -1580271401, now seen corresponding path program 5 times [2021-07-14 19:18:18,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 19:18:18,138 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288620726] [2021-07-14 19:18:18,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 19:18:18,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 19:18:18,243 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 9 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 19:18:18,243 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 19:18:18,243 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288620726] [2021-07-14 19:18:18,243 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288620726] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 19:18:18,243 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681152421] [2021-07-14 19:18:18,244 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 19:18:18,288 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-07-14 19:18:18,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 19:18:18,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 13 conjunts are in the unsatisfiable core [2021-07-14 19:18:18,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 19:18:18,559 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 16 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 19:18:18,560 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681152421] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 19:18:18,560 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 19:18:18,560 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 24 [2021-07-14 19:18:18,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699382358] [2021-07-14 19:18:18,561 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-07-14 19:18:18,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 19:18:18,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-07-14 19:18:18,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=449, Unknown=0, NotChecked=0, Total=552 [2021-07-14 19:18:18,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 19:18:18,562 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 19:18:18,562 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 2.5416666666666665) internal successors, (61), 24 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 19:18:18,562 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 19:18:18,562 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 19:18:18,562 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2021-07-14 19:18:18,562 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-07-14 19:18:18,562 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 19:18:19,494 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 87 [2021-07-14 19:18:19,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 19:18:19,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 19:18:19,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-14 19:18:19,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-07-14 19:18:19,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-07-14 19:18:19,709 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 19:18:19,710 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 19:18:19,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 19:18:19,710 INFO L82 PathProgramCache]: Analyzing trace with hash -838044223, now seen corresponding path program 6 times [2021-07-14 19:18:19,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 19:18:19,711 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970888062] [2021-07-14 19:18:19,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 19:18:19,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 19:18:19,822 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 31 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 19:18:19,822 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 19:18:19,823 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970888062] [2021-07-14 19:18:19,823 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970888062] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 19:18:19,823 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332723818] [2021-07-14 19:18:19,824 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 19:18:19,881 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-07-14 19:18:19,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 19:18:19,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 16 conjunts are in the unsatisfiable core [2021-07-14 19:18:19,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 19:18:20,153 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 20 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 19:18:20,153 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1332723818] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 19:18:20,153 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 19:18:20,153 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17] total 28 [2021-07-14 19:18:20,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425249347] [2021-07-14 19:18:20,154 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-14 19:18:20,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 19:18:20,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-14 19:18:20,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=612, Unknown=0, NotChecked=0, Total=756 [2021-07-14 19:18:20,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 19:18:20,155 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 19:18:20,155 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 2.8214285714285716) internal successors, (79), 28 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 19:18:20,155 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 19:18:20,156 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 19:18:20,156 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2021-07-14 19:18:20,156 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2021-07-14 19:18:20,156 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 31 states. [2021-07-14 19:18:20,156 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 19:18:20,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 19:18:20,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 19:18:20,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-14 19:18:20,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-07-14 19:18:20,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-07-14 19:18:20,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-07-14 19:18:20,560 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 19:18:20,560 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 19:18:20,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 19:18:20,561 INFO L82 PathProgramCache]: Analyzing trace with hash 1493891363, now seen corresponding path program 7 times [2021-07-14 19:18:20,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 19:18:20,561 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950204359] [2021-07-14 19:18:20,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 19:18:20,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 19:18:20,694 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 24 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 19:18:20,694 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 19:18:20,694 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950204359] [2021-07-14 19:18:20,694 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950204359] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 19:18:20,694 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240655099] [2021-07-14 19:18:20,695 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 19:18:20,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 19:18:20,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 16 conjunts are in the unsatisfiable core [2021-07-14 19:18:20,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 19:18:20,996 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 21 proven. 47 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-07-14 19:18:20,997 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1240655099] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 19:18:20,997 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 19:18:20,997 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 29 [2021-07-14 19:18:20,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634453103] [2021-07-14 19:18:20,997 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-07-14 19:18:20,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 19:18:20,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-07-14 19:18:20,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=653, Unknown=0, NotChecked=0, Total=812 [2021-07-14 19:18:20,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 19:18:20,999 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 19:18:20,999 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 2.7241379310344827) internal successors, (79), 29 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 19:18:20,999 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 19:18:20,999 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 19:18:20,999 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2021-07-14 19:18:20,999 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2021-07-14 19:18:20,999 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 31 states. [2021-07-14 19:18:20,999 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-07-14 19:18:20,999 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 19:18:21,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 19:18:21,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 19:18:21,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-14 19:18:21,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-07-14 19:18:21,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-07-14 19:18:21,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-07-14 19:18:21,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-07-14 19:18:21,417 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2021-07-14 19:18:21,418 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 19:18:21,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 19:18:21,418 INFO L82 PathProgramCache]: Analyzing trace with hash 511060997, now seen corresponding path program 8 times [2021-07-14 19:18:21,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 19:18:21,418 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159373754] [2021-07-14 19:18:21,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 19:18:21,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 19:18:21,605 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 20 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 19:18:21,605 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 19:18:21,605 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159373754] [2021-07-14 19:18:21,605 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159373754] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 19:18:21,605 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1380376555] [2021-07-14 19:18:21,605 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 19:18:21,647 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-14 19:18:21,648 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 19:18:21,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 18 conjunts are in the unsatisfiable core [2021-07-14 19:18:21,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 19:18:21,976 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 20 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 19:18:21,976 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1380376555] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 19:18:21,976 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 19:18:21,976 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 32 [2021-07-14 19:18:21,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018455365] [2021-07-14 19:18:21,977 INFO L462 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-07-14 19:18:21,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 19:18:21,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-07-14 19:18:21,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=800, Unknown=0, NotChecked=0, Total=992 [2021-07-14 19:18:21,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 19:18:21,978 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 19:18:21,978 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 2.4375) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 19:18:21,978 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 19:18:21,978 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 19:18:21,978 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2021-07-14 19:18:21,978 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2021-07-14 19:18:21,979 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 31 states. [2021-07-14 19:18:21,979 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-07-14 19:18:21,979 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2021-07-14 19:18:21,979 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 19:18:22,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 19:18:22,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 19:18:22,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-14 19:18:22,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-07-14 19:18:22,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-07-14 19:18:22,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-07-14 19:18:22,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-07-14 19:18:22,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-07-14 19:18:22,444 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2021-07-14 19:18:22,445 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 19:18:22,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 19:18:22,445 INFO L82 PathProgramCache]: Analyzing trace with hash 903884391, now seen corresponding path program 9 times [2021-07-14 19:18:22,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 19:18:22,445 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144414146] [2021-07-14 19:18:22,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 19:18:22,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 19:18:26,304 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 39 [2021-07-14 19:26:18,228 WARN L205 SmtUtils]: Spent 7.87 m on a formula simplification. DAG size of input: 334 DAG size of output: 518 [2021-07-14 19:26:18,375 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 518 [2021-07-14 19:26:19,441 WARN L205 SmtUtils]: Spent 997.00 ms on a formula simplification. DAG size of input: 496 DAG size of output: 59 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown