/usr/bin/java -Xmx16000000000 -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-Sleep-NoLbe-Delay.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/counter-fun.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-a865e3bea3ade1065a4c95009cfa501fe03c5538-a865e3b [2021-02-19 21:28:35,616 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-19 21:28:35,618 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-19 21:28:35,641 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-19 21:28:35,658 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-19 21:28:35,660 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-19 21:28:35,660 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-19 21:28:35,663 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-19 21:28:35,663 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-19 21:28:35,664 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-19 21:28:35,666 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-19 21:28:35,671 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-19 21:28:35,672 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-19 21:28:35,673 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-19 21:28:35,674 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-19 21:28:35,675 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-19 21:28:35,679 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-19 21:28:35,692 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-Sleep-NoLbe-Delay.epf [2021-02-19 21:28:35,713 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-19 21:28:35,713 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-19 21:28:35,716 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-02-19 21:28:35,716 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-02-19 21:28:35,718 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-19 21:28:35,718 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-19 21:28:35,718 INFO L138 SettingsManager]: * Use SBE=true [2021-02-19 21:28:35,718 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-19 21:28:35,718 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-19 21:28:35,718 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-19 21:28:35,719 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-19 21:28:35,719 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-19 21:28:35,719 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-19 21:28:35,719 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-19 21:28:35,719 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-19 21:28:35,719 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-19 21:28:35,719 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-19 21:28:35,719 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-19 21:28:35,720 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-19 21:28:35,720 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-19 21:28:35,720 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-19 21:28:35,720 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-19 21:28:35,720 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-19 21:28:35,720 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-19 21:28:35,720 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-19 21:28:35,720 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-19 21:28:35,721 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-19 21:28:35,721 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-19 21:28:35,721 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-19 21:28:35,721 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-02-19 21:28:35,721 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-02-19 21:28:35,721 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-19 21:28:35,721 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-02-19 21:28:35,721 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-19 21:28:35,926 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-19 21:28:35,951 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-19 21:28:35,953 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-19 21:28:35,954 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-02-19 21:28:35,955 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-02-19 21:28:35,955 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/counter-fun.wvr.bpl [2021-02-19 21:28:35,955 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/counter-fun.wvr.bpl' [2021-02-19 21:28:35,978 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-19 21:28:35,981 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-19 21:28:35,982 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-02-19 21:28:35,982 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-02-19 21:28:35,982 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-02-19 21:28:35,989 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "counter-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 09:28:35" (1/1) ... [2021-02-19 21:28:35,994 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "counter-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 09:28:35" (1/1) ... [2021-02-19 21:28:35,998 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-02-19 21:28:35,999 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-19 21:28:35,999 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-19 21:28:35,999 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-19 21:28:36,004 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "counter-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 09:28:35" (1/1) ... [2021-02-19 21:28:36,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "counter-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 09:28:35" (1/1) ... [2021-02-19 21:28:36,004 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "counter-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 09:28:35" (1/1) ... [2021-02-19 21:28:36,004 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "counter-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 09:28:35" (1/1) ... [2021-02-19 21:28:36,006 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "counter-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 09:28:35" (1/1) ... [2021-02-19 21:28:36,007 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "counter-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 09:28:35" (1/1) ... [2021-02-19 21:28:36,008 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "counter-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 09:28:35" (1/1) ... [2021-02-19 21:28:36,008 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-19 21:28:36,009 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-19 21:28:36,009 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-19 21:28:36,009 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-19 21:28:36,010 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "counter-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 09:28:35" (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 [2021-02-19 21:28:36,055 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-02-19 21:28:36,055 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-02-19 21:28:36,055 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-02-19 21:28:36,056 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-02-19 21:28:36,056 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-02-19 21:28:36,056 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-02-19 21:28:36,056 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-02-19 21:28:36,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-19 21:28:36,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-19 21:28:36,056 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-02-19 21:28:36,212 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-19 21:28:36,212 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-19 21:28:36,213 INFO L202 PluginConnector]: Adding new model counter-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 09:28:36 BoogieIcfgContainer [2021-02-19 21:28:36,214 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-19 21:28:36,214 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-19 21:28:36,215 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-19 21:28:36,216 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-19 21:28:36,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "counter-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 09:28:35" (1/2) ... [2021-02-19 21:28:36,217 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27c86e20 and model type counter-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 09:28:36, skipping insertion in model container [2021-02-19 21:28:36,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "counter-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 09:28:36" (2/2) ... [2021-02-19 21:28:36,218 INFO L111 eAbstractionObserver]: Analyzing ICFG counter-fun.wvr.bpl [2021-02-19 21:28:36,221 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-02-19 21:28:36,221 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-19 21:28:36,223 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-19 21:28:36,224 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-02-19 21:28:36,243 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-02-19 21:28:36,253 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 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 [2021-02-19 21:28:36,306 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-19 21:28:36,306 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-19 21:28:36,307 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-19 21:28:36,307 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-19 21:28:36,307 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-19 21:28:36,307 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-19 21:28:36,307 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-19 21:28:36,307 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-19 21:28:36,373 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 21:28:36,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 21:28:36,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1774120109, now seen corresponding path program 1 times [2021-02-19 21:28:36,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 21:28:36,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058263423] [2021-02-19 21:28:36,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 21:28:36,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 21:28:36,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 21:28:36,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058263423] [2021-02-19 21:28:36,501 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 21:28:36,501 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-19 21:28:36,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923227395] [2021-02-19 21:28:36,505 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-19 21:28:36,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 21:28:36,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-19 21:28:36,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-19 21:28:36,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-02-19 21:28:36,515 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-02-19 21:28:36,516 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2021-02-19 21:28:36,516 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-02-19 21:28:36,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-19 21:28:36,561 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-19 21:28:36,561 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 21:28:36,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 21:28:36,563 INFO L82 PathProgramCache]: Analyzing trace with hash -1798270993, now seen corresponding path program 1 times [2021-02-19 21:28:36,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 21:28:36,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912935093] [2021-02-19 21:28:36,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 21:28:36,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 21:28:36,626 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 21:28:36,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912935093] [2021-02-19 21:28:36,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696103514] [2021-02-19 21:28:36,627 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 [2021-02-19 21:28:36,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 21:28:36,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 5 conjunts are in the unsatisfiable core [2021-02-19 21:28:36,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 21:28:36,780 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 21:28:36,781 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 21:28:36,781 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2021-02-19 21:28:36,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622032553] [2021-02-19 21:28:36,782 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-19 21:28:36,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 21:28:36,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-19 21:28:36,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-02-19 21:28:36,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-02-19 21:28:36,783 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-02-19 21:28:36,783 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 9 states have internal predecessors, (26), 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) [2021-02-19 21:28:36,783 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-02-19 21:28:36,783 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-02-19 21:28:36,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-19 21:28:36,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-19 21:28:37,075 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 21:28:37,075 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 21:28:37,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 21:28:37,076 INFO L82 PathProgramCache]: Analyzing trace with hash 1555212591, now seen corresponding path program 1 times [2021-02-19 21:28:37,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 21:28:37,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089890781] [2021-02-19 21:28:37,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 21:28:37,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 21:28:37,173 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 21:28:37,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089890781] [2021-02-19 21:28:37,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500253308] [2021-02-19 21:28:37,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2021-02-19 21:28:37,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 21:28:37,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 7 conjunts are in the unsatisfiable core [2021-02-19 21:28:37,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 21:28:37,319 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 21:28:37,319 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 21:28:37,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2021-02-19 21:28:37,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242998151] [2021-02-19 21:28:37,319 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-19 21:28:37,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 21:28:37,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-19 21:28:37,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-02-19 21:28:37,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-02-19 21:28:37,320 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-02-19 21:28:37,321 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 21:28:37,321 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-02-19 21:28:37,321 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-02-19 21:28:37,321 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-02-19 21:28:37,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-19 21:28:37,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-19 21:28:37,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-19 21:28:37,689 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 21:28:37,692 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 21:28:37,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 21:28:37,692 INFO L82 PathProgramCache]: Analyzing trace with hash -113847763, now seen corresponding path program 2 times [2021-02-19 21:28:37,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 21:28:37,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187126804] [2021-02-19 21:28:37,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 21:28:37,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 21:28:37,746 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 21:28:37,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187126804] [2021-02-19 21:28:37,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282345401] [2021-02-19 21:28:37,746 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-02-19 21:28:37,770 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-02-19 21:28:37,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 21:28:37,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 17 conjunts are in the unsatisfiable core [2021-02-19 21:28:37,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 21:28:37,904 INFO L354 Elim1Store]: treesize reduction 19, result has 48.6 percent of original size [2021-02-19 21:28:37,904 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 37 [2021-02-19 21:28:37,907 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 21:28:37,916 INFO L628 ElimStorePlain]: treesize reduction 7, result has 74.1 percent of original size [2021-02-19 21:28:37,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 21:28:37,919 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-02-19 21:28:37,926 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-02-19 21:28:37,927 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-02-19 21:28:37,928 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-02-19 21:28:37,929 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 21:28:37,930 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-02-19 21:28:37,930 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:49, output treesize:3 [2021-02-19 21:28:37,950 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 21:28:37,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 21:28:37,951 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 8 [2021-02-19 21:28:37,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57017267] [2021-02-19 21:28:37,952 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-19 21:28:37,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 21:28:37,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-19 21:28:37,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-02-19 21:28:37,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-02-19 21:28:37,954 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-02-19 21:28:37,955 INFO L481 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) [2021-02-19 21:28:37,955 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-02-19 21:28:37,955 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-02-19 21:28:37,955 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-02-19 21:28:37,955 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-02-19 21:28:38,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-19 21:28:38,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-19 21:28:38,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-02-19 21:28:38,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-19 21:28:38,242 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 21:28:38,242 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 21:28:38,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 21:28:38,242 INFO L82 PathProgramCache]: Analyzing trace with hash 1643615089, now seen corresponding path program 3 times [2021-02-19 21:28:38,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 21:28:38,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159698182] [2021-02-19 21:28:38,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 21:28:38,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 21:28:38,339 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 14 proven. 18 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-19 21:28:38,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159698182] [2021-02-19 21:28:38,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1049011421] [2021-02-19 21:28:38,340 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 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 [2021-02-19 21:28:38,365 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-02-19 21:28:38,365 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 21:28:38,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 12 conjunts are in the unsatisfiable core [2021-02-19 21:28:38,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 21:28:38,594 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 9 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 21:28:38,595 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 21:28:38,595 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 21 [2021-02-19 21:28:38,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580191215] [2021-02-19 21:28:38,596 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-02-19 21:28:38,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 21:28:38,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-02-19 21:28:38,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2021-02-19 21:28:38,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-02-19 21:28:38,599 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-02-19 21:28:38,599 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 2.409090909090909) internal successors, (53), 21 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) [2021-02-19 21:28:38,599 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-02-19 21:28:38,599 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-02-19 21:28:38,599 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-02-19 21:28:38,599 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-02-19 21:28:38,599 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-02-19 21:28:38,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-19 21:28:38,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-19 21:28:38,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-02-19 21:28:38,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-19 21:28:38,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-02-19 21:28:39,152 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 21:28:39,152 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 21:28:39,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 21:28:39,153 INFO L82 PathProgramCache]: Analyzing trace with hash 1158783725, now seen corresponding path program 4 times [2021-02-19 21:28:39,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 21:28:39,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179831488] [2021-02-19 21:28:39,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 21:28:39,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 21:28:39,217 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 21:28:39,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179831488] [2021-02-19 21:28:39,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056309475] [2021-02-19 21:28:39,217 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 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 [2021-02-19 21:28:39,241 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-02-19 21:28:39,241 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 21:28:39,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 33 conjunts are in the unsatisfiable core [2021-02-19 21:28:39,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 21:28:39,375 INFO L354 Elim1Store]: treesize reduction 32, result has 60.5 percent of original size [2021-02-19 21:28:39,376 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 89 treesize of output 89 [2021-02-19 21:28:39,380 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 21:28:39,401 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 21:28:39,402 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-02-19 21:28:39,403 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:89, output treesize:162 [2021-02-19 21:28:39,621 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2021-02-19 21:28:39,947 WARN L202 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 38 [2021-02-19 21:28:40,372 INFO L354 Elim1Store]: treesize reduction 78, result has 3.7 percent of original size [2021-02-19 21:28:40,372 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 98 treesize of output 43 [2021-02-19 21:28:40,374 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 21:28:40,439 INFO L628 ElimStorePlain]: treesize reduction 185, result has 53.8 percent of original size [2021-02-19 21:28:40,481 INFO L354 Elim1Store]: treesize reduction 40, result has 50.6 percent of original size [2021-02-19 21:28:40,482 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 63 treesize of output 75 [2021-02-19 21:28:40,485 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-02-19 21:28:40,493 INFO L628 ElimStorePlain]: treesize reduction 152, result has 1.9 percent of original size [2021-02-19 21:28:40,493 INFO L518 ElimStorePlain]: Eliminatee v_prenex_10 vanished before elimination [2021-02-19 21:28:40,493 INFO L518 ElimStorePlain]: Eliminatee v_prenex_12 vanished before elimination [2021-02-19 21:28:40,493 INFO L518 ElimStorePlain]: Eliminatee v_prenex_11 vanished before elimination [2021-02-19 21:28:40,494 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 5 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-02-19 21:28:40,494 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 10 variables, input treesize:486, output treesize:3 [2021-02-19 21:28:40,508 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 21:28:40,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 21:28:40,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12] total 17 [2021-02-19 21:28:40,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932245303] [2021-02-19 21:28:40,508 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-19 21:28:40,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 21:28:40,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-19 21:28:40,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2021-02-19 21:28:40,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-02-19 21:28:40,509 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-02-19 21:28:40,509 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 17 states have internal predecessors, (56), 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) [2021-02-19 21:28:40,509 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-02-19 21:28:40,509 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-02-19 21:28:40,509 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-02-19 21:28:40,509 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-02-19 21:28:40,509 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-02-19 21:28:40,509 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-02-19 21:28:40,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-19 21:28:40,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-19 21:28:40,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-02-19 21:28:40,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-19 21:28:40,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-02-19 21:28:40,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-19 21:28:40,801 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 21:28:40,802 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 21:28:40,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 21:28:40,802 INFO L82 PathProgramCache]: Analyzing trace with hash 2121428019, now seen corresponding path program 5 times [2021-02-19 21:28:40,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 21:28:40,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233302952] [2021-02-19 21:28:40,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 21:28:40,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 21:28:40,962 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 47 proven. 40 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-19 21:28:40,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233302952] [2021-02-19 21:28:40,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17110625] [2021-02-19 21:28:40,962 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 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 [2021-02-19 21:28:41,007 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2021-02-19 21:28:41,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 21:28:41,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 17 conjunts are in the unsatisfiable core [2021-02-19 21:28:41,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 21:28:41,283 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 36 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 21:28:41,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 21:28:41,284 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17] total 31 [2021-02-19 21:28:41,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831107911] [2021-02-19 21:28:41,285 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-02-19 21:28:41,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 21:28:41,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-02-19 21:28:41,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=813, Unknown=0, NotChecked=0, Total=992 [2021-02-19 21:28:41,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-02-19 21:28:41,286 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-02-19 21:28:41,286 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 2.28125) internal successors, (73), 31 states have internal predecessors, (73), 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) [2021-02-19 21:28:41,286 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-02-19 21:28:41,286 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-02-19 21:28:41,286 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-02-19 21:28:41,287 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-02-19 21:28:41,287 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-02-19 21:28:41,287 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-02-19 21:28:41,287 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-02-19 21:28:41,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-19 21:28:41,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-19 21:28:41,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-02-19 21:28:41,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-19 21:28:41,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-02-19 21:28:41,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-19 21:28:41,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-02-19 21:28:42,028 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 21:28:42,028 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 21:28:42,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 21:28:42,029 INFO L82 PathProgramCache]: Analyzing trace with hash 2103470765, now seen corresponding path program 6 times [2021-02-19 21:28:42,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 21:28:42,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486302528] [2021-02-19 21:28:42,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 21:28:42,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 21:28:42,134 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 21:28:42,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486302528] [2021-02-19 21:28:42,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644870623] [2021-02-19 21:28:42,134 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 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 [2021-02-19 21:28:42,175 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-02-19 21:28:42,176 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 21:28:42,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 61 conjunts are in the unsatisfiable core [2021-02-19 21:28:42,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 21:28:42,660 INFO L446 ElimStorePlain]: Different costs {36=[f], 105=[f_inv]} [2021-02-19 21:28:42,793 WARN L202 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 83 [2021-02-19 21:28:42,798 INFO L354 Elim1Store]: treesize reduction 160, result has 44.6 percent of original size [2021-02-19 21:28:42,798 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 17 new quantified variables, introduced 36 case distinctions, treesize of input 271 treesize of output 245 [2021-02-19 21:29:01,314 INFO L550 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 21:29:01,389 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 21:29:01,485 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 21:29:01,485 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 15 new quantified variables, introduced 28 case distinctions, treesize of input 695 treesize of output 380 [2021-02-19 21:29:01,758 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-02-19 21:29:01,759 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 21:29:01,759 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-02-19 21:29:01,759 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:271, output treesize:3 [2021-02-19 21:29:01,776 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 21:29:01,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 21:29:01,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 18] total 26 [2021-02-19 21:29:01,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817385781] [2021-02-19 21:29:01,777 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-02-19 21:29:01,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 21:29:01,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-02-19 21:29:01,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=579, Unknown=0, NotChecked=0, Total=650 [2021-02-19 21:29:01,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-02-19 21:29:01,778 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-02-19 21:29:01,778 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 3.076923076923077) internal successors, (80), 26 states have internal predecessors, (80), 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) [2021-02-19 21:29:01,778 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-02-19 21:29:01,778 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-02-19 21:29:01,778 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-02-19 21:29:01,778 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-02-19 21:29:01,778 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-02-19 21:29:01,778 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-02-19 21:29:01,779 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2021-02-19 21:29:01,779 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-02-19 21:29:01,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-19 21:29:01,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-19 21:29:01,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-02-19 21:29:01,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-19 21:29:01,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-02-19 21:29:01,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-19 21:29:01,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-02-19 21:29:01,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-19 21:29:02,076 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2021-02-19 21:29:02,076 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 21:29:02,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 21:29:02,077 INFO L82 PathProgramCache]: Analyzing trace with hash 336165619, now seen corresponding path program 7 times [2021-02-19 21:29:02,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 21:29:02,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263066260] [2021-02-19 21:29:02,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 21:29:02,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 21:29:02,322 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 98 proven. 85 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-19 21:29:02,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263066260] [2021-02-19 21:29:02,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905569110] [2021-02-19 21:29:02,323 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 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 [2021-02-19 21:29:02,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 21:29:02,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 23 conjunts are in the unsatisfiable core [2021-02-19 21:29:02,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 21:29:02,831 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 81 proven. 104 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 21:29:02,831 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 21:29:02,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 23] total 43 [2021-02-19 21:29:02,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302496168] [2021-02-19 21:29:02,832 INFO L460 AbstractCegarLoop]: Interpolant automaton has 44 states [2021-02-19 21:29:02,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 21:29:02,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-02-19 21:29:02,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=1569, Unknown=0, NotChecked=0, Total=1892 [2021-02-19 21:29:02,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-02-19 21:29:02,835 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-02-19 21:29:02,835 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 44 states, 44 states have (on average 2.2045454545454546) internal successors, (97), 43 states have internal predecessors, (97), 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) [2021-02-19 21:29:02,835 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-02-19 21:29:02,835 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-02-19 21:29:02,836 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-02-19 21:29:02,836 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-02-19 21:29:02,836 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-02-19 21:29:02,836 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-02-19 21:29:02,836 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2021-02-19 21:29:02,836 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-02-19 21:29:02,836 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-02-19 21:29:03,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-19 21:29:03,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-19 21:29:03,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-02-19 21:29:03,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-19 21:29:03,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-02-19 21:29:03,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-19 21:29:03,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-02-19 21:29:03,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-19 21:29:03,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-02-19 21:29:03,920 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5882 [2021-02-19 21:29:03,920 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 21:29:03,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 21:29:03,921 INFO L82 PathProgramCache]: Analyzing trace with hash -553948819, now seen corresponding path program 8 times [2021-02-19 21:29:03,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 21:29:03,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723194490] [2021-02-19 21:29:03,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 21:29:03,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 21:29:04,054 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 0 proven. 242 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 21:29:04,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723194490] [2021-02-19 21:29:04,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171554148] [2021-02-19 21:29:04,054 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 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 [2021-02-19 21:29:04,083 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-02-19 21:29:04,083 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 21:29:04,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 69 conjunts are in the unsatisfiable core [2021-02-19 21:29:04,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 21:29:04,638 WARN L202 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 143 [2021-02-19 21:29:04,638 INFO L354 Elim1Store]: treesize reduction 200, result has 54.6 percent of original size [2021-02-19 21:29:04,638 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 21 new quantified variables, introduced 55 case distinctions, treesize of input 323 treesize of output 329 [2021-02-19 21:29:04,651 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 21:29:04,811 WARN L202 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2021-02-19 21:29:04,811 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 21:29:04,813 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-02-19 21:29:04,814 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:323, output treesize:1586 [2021-02-19 21:29:05,014 WARN L202 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 116 Received shutdown request... [2021-02-19 21:37:55,728 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5883 [2021-02-19 21:37:55,728 WARN L545 AbstractCegarLoop]: Verification canceled [2021-02-19 21:37:55,731 WARN L224 ceAbstractionStarter]: Timeout [2021-02-19 21:37:55,732 INFO L202 PluginConnector]: Adding new model counter-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.02 09:37:55 BasicIcfg [2021-02-19 21:37:55,732 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-19 21:37:55,732 INFO L168 Benchmark]: Toolchain (without parser) took 559753.20 ms. Allocated memory was 255.9 MB in the beginning and 1.3 GB in the end (delta: 1.0 GB). Free memory was 236.5 MB in the beginning and 696.3 MB in the end (delta: -459.8 MB). Peak memory consumption was 787.5 MB. Max. memory is 16.0 GB. [2021-02-19 21:37:55,732 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.10 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-02-19 21:37:55,732 INFO L168 Benchmark]: Boogie Procedure Inliner took 16.48 ms. Allocated memory is still 255.9 MB. Free memory was 236.1 MB in the beginning and 234.5 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-02-19 21:37:55,732 INFO L168 Benchmark]: Boogie Preprocessor took 9.56 ms. Allocated memory is still 255.9 MB. Free memory was 234.5 MB in the beginning and 233.6 MB in the end (delta: 879.4 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-02-19 21:37:55,732 INFO L168 Benchmark]: RCFGBuilder took 204.74 ms. Allocated memory is still 255.9 MB. Free memory was 233.6 MB in the beginning and 238.3 MB in the end (delta: -4.7 MB). Peak memory consumption was 23.8 MB. Max. memory is 16.0 GB. [2021-02-19 21:37:55,732 INFO L168 Benchmark]: TraceAbstraction took 559517.19 ms. Allocated memory was 255.9 MB in the beginning and 1.3 GB in the end (delta: 1.0 GB). Free memory was 237.6 MB in the beginning and 696.3 MB in the end (delta: -458.6 MB). Peak memory consumption was 786.8 MB. Max. memory is 16.0 GB. [2021-02-19 21:37:55,733 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.10 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 16.48 ms. Allocated memory is still 255.9 MB. Free memory was 236.1 MB in the beginning and 234.5 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 9.56 ms. Allocated memory is still 255.9 MB. Free memory was 234.5 MB in the beginning and 233.6 MB in the end (delta: 879.4 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 204.74 ms. Allocated memory is still 255.9 MB. Free memory was 233.6 MB in the beginning and 238.3 MB in the end (delta: -4.7 MB). Peak memory consumption was 23.8 MB. Max. memory is 16.0 GB. * TraceAbstraction took 559517.19 ms. Allocated memory was 255.9 MB in the beginning and 1.3 GB in the end (delta: 1.0 GB). Free memory was 237.6 MB in the beginning and 696.3 MB in the end (delta: -458.6 MB). Peak memory consumption was 786.8 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 52]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 52). Cancelled while PartialOrderCegarLoop was analyzing trace of length 59 with TraceHistMax 11,while TraceCheckSpWp was constructing forward predicates,while QuantifierPusher was running 1 iterations of DualJunctionQuantifierElimination. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 559.4s, OverallIterations: 10, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 23.0s InterpolantComputationTime, 534 NumberOfCodeBlocks, 534 NumberOfCodeBlocksAsserted, 39 NumberOfCheckSat, 517 ConstructedInterpolants, 8 QuantifiedInterpolants, 483671 SizeOfPredicates, 26 NumberOfNonLiveVariables, 742 ConjunctsInSsa, 175 ConjunctsInUnsatCore, 17 InterpolantComputations, 1 PerfectInterpolantSequences, 293/1000 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown