/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-POR-DelaySleep-NoLbe-Random42.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-bad/buffer-mult-alt.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2abb09bbbae98a04ae2fcc735832bfdba44f6fbc-2abb09b [2021-06-06 16:42:05,139 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-06 16:42:05,148 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-06 16:42:05,175 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-06 16:42:05,189 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-06 16:42:05,190 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-06 16:42:05,191 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-06 16:42:05,192 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-06 16:42:05,194 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-06 16:42:05,194 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-06 16:42:05,196 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-06 16:42:05,201 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-06 16:42:05,201 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-06 16:42:05,202 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-06 16:42:05,203 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-06 16:42:05,204 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-06 16:42:05,209 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-06 16:42:05,209 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-06 16:42:05,209 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-06 16:42:05,210 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-06 16:42:05,210 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-06 16:42:05,211 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-06 16:42:05,211 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-06 16:42:05,211 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-06 16:42:05,212 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-06 16:42:05,213 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-06 16:42:05,213 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-06 16:42:05,214 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-06 16:42:05,214 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-06 16:42:05,214 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-06 16:42:05,214 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-06 16:42:05,215 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-06 16:42:05,215 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-06 16:42:05,218 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-DelaySleep-NoLbe-Random42.epf [2021-06-06 16:42:05,240 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-06 16:42:05,240 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-06 16:42:05,241 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-06 16:42:05,241 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-06 16:42:05,242 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-06 16:42:05,243 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-06 16:42:05,243 INFO L138 SettingsManager]: * Use SBE=true [2021-06-06 16:42:05,243 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-06 16:42:05,243 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-06 16:42:05,243 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-06 16:42:05,244 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-06 16:42:05,244 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-06 16:42:05,244 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-06 16:42:05,244 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-06 16:42:05,244 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-06 16:42:05,244 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-06 16:42:05,244 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-06 16:42:05,244 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-06 16:42:05,244 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-06 16:42:05,245 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-06 16:42:05,245 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-06 16:42:05,245 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-06 16:42:05,245 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-06 16:42:05,245 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-06 16:42:05,245 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-06 16:42:05,245 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-06 16:42:05,245 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-06 16:42:05,245 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-06 16:42:05,245 INFO L138 SettingsManager]: * DFS Order used in POR=RANDOM [2021-06-06 16:42:05,245 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-06 16:42:05,245 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-06 16:42:05,246 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-06-06 16:42:05,246 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-06 16:42:05,246 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-06-06 16:42:05,246 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-06-06 16:42:05,246 INFO L138 SettingsManager]: * Random seed used by POR DFS order=42 WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-06 16:42:05,507 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-06 16:42:05,520 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-06 16:42:05,521 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-06 16:42:05,522 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-06 16:42:05,523 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-06 16:42:05,523 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-bad/buffer-mult-alt.wvr.bpl [2021-06-06 16:42:05,533 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-bad/buffer-mult-alt.wvr.bpl' [2021-06-06 16:42:05,550 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-06 16:42:05,551 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-06 16:42:05,551 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-06 16:42:05,552 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-06 16:42:05,552 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-06 16:42:05,561 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "buffer-mult-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 04:42:05" (1/1) ... [2021-06-06 16:42:05,567 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "buffer-mult-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 04:42:05" (1/1) ... [2021-06-06 16:42:05,572 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-06 16:42:05,572 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-06 16:42:05,572 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-06 16:42:05,573 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-06 16:42:05,577 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "buffer-mult-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 04:42:05" (1/1) ... [2021-06-06 16:42:05,577 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "buffer-mult-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 04:42:05" (1/1) ... [2021-06-06 16:42:05,582 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "buffer-mult-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 04:42:05" (1/1) ... [2021-06-06 16:42:05,582 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "buffer-mult-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 04:42:05" (1/1) ... [2021-06-06 16:42:05,587 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "buffer-mult-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 04:42:05" (1/1) ... [2021-06-06 16:42:05,590 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "buffer-mult-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 04:42:05" (1/1) ... [2021-06-06 16:42:05,591 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "buffer-mult-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 04:42:05" (1/1) ... [2021-06-06 16:42:05,592 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-06 16:42:05,592 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-06 16:42:05,592 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-06 16:42:05,592 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-06 16:42:05,593 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "buffer-mult-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 04:42:05" (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 [2021-06-06 16:42:05,644 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-06 16:42:05,644 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-06 16:42:05,644 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-06 16:42:05,645 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-06 16:42:05,645 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-06 16:42:05,645 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-06 16:42:05,646 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-06 16:42:05,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-06 16:42:05,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-06 16:42:05,646 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-06 16:42:05,646 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-06 16:42:05,647 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-06 16:42:05,648 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-06-06 16:42:05,648 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-06-06 16:42:05,648 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-06-06 16:42:05,649 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-06 16:42:05,802 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-06 16:42:05,802 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-06 16:42:05,804 INFO L202 PluginConnector]: Adding new model buffer-mult-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.06 04:42:05 BoogieIcfgContainer [2021-06-06 16:42:05,804 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-06 16:42:05,805 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-06 16:42:05,805 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-06 16:42:05,807 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-06 16:42:05,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "buffer-mult-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 04:42:05" (1/2) ... [2021-06-06 16:42:05,807 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21b4182c and model type buffer-mult-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.06 04:42:05, skipping insertion in model container [2021-06-06 16:42:05,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "buffer-mult-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.06 04:42:05" (2/2) ... [2021-06-06 16:42:05,808 INFO L111 eAbstractionObserver]: Analyzing ICFG buffer-mult-alt.wvr.bpl [2021-06-06 16:42:05,812 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-06 16:42:05,812 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-06 16:42:05,812 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-06 16:42:05,812 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-06 16:42:05,882 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-06-06 16:42:05,895 INFO L255 AbstractCegarLoop]: Starting to check reachability of 5 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 [2021-06-06 16:42:05,923 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-06 16:42:05,923 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-06 16:42:05,923 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-06 16:42:05,923 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-06 16:42:05,923 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-06 16:42:05,924 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-06 16:42:05,924 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-06 16:42:05,924 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-06 16:42:06,063 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 16:42:06,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 16:42:06,067 INFO L82 PathProgramCache]: Analyzing trace with hash 1304042315, now seen corresponding path program 1 times [2021-06-06 16:42:06,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 16:42:06,072 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864426735] [2021-06-06 16:42:06,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 16:42:06,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 16:42:06,220 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-06-06 16:42:06,220 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 16:42:06,220 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864426735] [2021-06-06 16:42:06,221 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864426735] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-06 16:42:06,221 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-06 16:42:06,221 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-06 16:42:06,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266109497] [2021-06-06 16:42:06,224 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-06 16:42:06,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 16:42:06,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-06 16:42:06,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-06 16:42:06,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 16:42:06,240 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 16:42:06,242 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 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) [2021-06-06 16:42:06,242 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 16:42:06,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 16:42:06,291 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-06 16:42:06,291 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 16:42:06,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 16:42:06,293 INFO L82 PathProgramCache]: Analyzing trace with hash -1903338339, now seen corresponding path program 1 times [2021-06-06 16:42:06,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 16:42:06,295 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430429154] [2021-06-06 16:42:06,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 16:42:06,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 16:42:06,354 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 16:42:06,354 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 16:42:06,355 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430429154] [2021-06-06 16:42:06,355 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430429154] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 16:42:06,355 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112309476] [2021-06-06 16:42:06,355 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 [2021-06-06 16:42:06,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 16:42:06,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 6 conjunts are in the unsatisfiable core [2021-06-06 16:42:06,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 16:42:06,577 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 16:42:06,578 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [112309476] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 16:42:06,578 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 16:42:06,578 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-06-06 16:42:06,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42733723] [2021-06-06 16:42:06,581 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-06 16:42:06,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 16:42:06,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-06 16:42:06,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-06-06 16:42:06,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 16:42:06,585 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 16:42:06,585 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 16:42:06,585 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-06 16:42:06,585 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 16:42:06,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 16:42:06,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-06 16:42:06,896 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 16:42:06,897 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 16:42:06,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 16:42:06,898 INFO L82 PathProgramCache]: Analyzing trace with hash -1086056948, now seen corresponding path program 2 times [2021-06-06 16:42:06,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 16:42:06,898 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078956850] [2021-06-06 16:42:06,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 16:42:06,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 16:42:06,993 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-06 16:42:06,993 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 16:42:06,993 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078956850] [2021-06-06 16:42:06,993 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078956850] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 16:42:06,994 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681674782] [2021-06-06 16:42:06,994 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 [2021-06-06 16:42:07,045 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 16:42:07,045 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 16:42:07,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 6 conjunts are in the unsatisfiable core [2021-06-06 16:42:07,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 16:42:07,132 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-06 16:42:07,133 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [681674782] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 16:42:07,133 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 16:42:07,133 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-06-06 16:42:07,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113823375] [2021-06-06 16:42:07,133 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-06 16:42:07,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 16:42:07,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-06 16:42:07,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-06-06 16:42:07,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 16:42:07,134 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 16:42:07,134 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 6 states have internal predecessors, (44), 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) [2021-06-06 16:42:07,134 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-06 16:42:07,134 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-06-06 16:42:07,134 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 16:42:07,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 16:42:07,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-06 16:42:07,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-06 16:42:07,397 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 16:42:07,398 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 16:42:07,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 16:42:07,399 INFO L82 PathProgramCache]: Analyzing trace with hash 212157047, now seen corresponding path program 3 times [2021-06-06 16:42:07,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 16:42:07,399 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459243628] [2021-06-06 16:42:07,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 16:42:07,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 16:42:07,603 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 16:42:07,604 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 16:42:07,604 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459243628] [2021-06-06 16:42:07,604 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459243628] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 16:42:07,604 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060788517] [2021-06-06 16:42:07,605 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 [2021-06-06 16:42:07,651 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-06-06 16:42:07,651 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 16:42:07,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-06 16:42:07,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 16:42:07,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:42:07,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:42:07,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:42:07,932 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 16:42:07,932 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 46 [2021-06-06 16:42:08,037 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 3 xjuncts. [2021-06-06 16:42:08,072 INFO L628 ElimStorePlain]: treesize reduction 33, result has 54.8 percent of original size [2021-06-06 16:42:08,080 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-06 16:42:08,080 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:52, output treesize:38 [2021-06-06 16:42:08,178 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-06-06 16:42:08,182 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 16:42:08,186 INFO L628 ElimStorePlain]: treesize reduction 6, result has 60.0 percent of original size [2021-06-06 16:42:08,186 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-06 16:42:08,186 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:27, output treesize:9 [2021-06-06 16:42:08,254 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 16:42:08,254 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1060788517] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 16:42:08,254 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 16:42:08,254 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 20 [2021-06-06 16:42:08,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91273436] [2021-06-06 16:42:08,255 INFO L462 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-06-06 16:42:08,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 16:42:08,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-06-06 16:42:08,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=365, Unknown=0, NotChecked=0, Total=420 [2021-06-06 16:42:08,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 16:42:08,256 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 16:42:08,256 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 3.6666666666666665) internal successors, (77), 20 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 16:42:08,256 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-06 16:42:08,256 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-06-06 16:42:08,256 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-06-06 16:42:08,256 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 16:42:08,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 16:42:08,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-06 16:42:08,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-06 16:42:08,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-06 16:42:08,904 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 16:42:08,905 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 16:42:08,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 16:42:08,905 INFO L82 PathProgramCache]: Analyzing trace with hash 333330009, now seen corresponding path program 4 times [2021-06-06 16:42:08,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 16:42:08,905 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446141151] [2021-06-06 16:42:08,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 16:42:08,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 16:42:09,106 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 16:42:09,106 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 16:42:09,106 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446141151] [2021-06-06 16:42:09,106 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446141151] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 16:42:09,106 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193041982] [2021-06-06 16:42:09,107 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 [2021-06-06 16:42:09,141 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 16:42:09,141 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 16:42:09,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 33 conjunts are in the unsatisfiable core [2021-06-06 16:42:09,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 16:42:09,438 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-06-06 16:42:09,438 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 48 treesize of output 20 [2021-06-06 16:42:09,440 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 16:42:09,444 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 16:42:09,445 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-06 16:42:09,445 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:54, output treesize:12 [2021-06-06 16:42:09,522 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-06-06 16:42:09,525 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 16:42:09,529 INFO L628 ElimStorePlain]: treesize reduction 6, result has 60.0 percent of original size [2021-06-06 16:42:09,529 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-06 16:42:09,529 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:27, output treesize:9 [2021-06-06 16:42:09,584 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 16:42:09,585 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1193041982] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 16:42:09,585 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 16:42:09,585 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2021-06-06 16:42:09,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332695779] [2021-06-06 16:42:09,585 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-06-06 16:42:09,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 16:42:09,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-06-06 16:42:09,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=491, Unknown=0, NotChecked=0, Total=552 [2021-06-06 16:42:09,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 16:42:09,586 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 16:42:09,586 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 3.625) internal successors, (87), 23 states have internal predecessors, (87), 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) [2021-06-06 16:42:09,586 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-06 16:42:09,586 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-06-06 16:42:09,587 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-06-06 16:42:09,587 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2021-06-06 16:42:09,587 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 16:42:10,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 16:42:10,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-06 16:42:10,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-06 16:42:10,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-06 16:42:10,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-06 16:42:10,501 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-06-06 16:42:10,501 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 16:42:10,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 16:42:10,501 INFO L82 PathProgramCache]: Analyzing trace with hash -1096304745, now seen corresponding path program 5 times [2021-06-06 16:42:10,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 16:42:10,502 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506614631] [2021-06-06 16:42:10,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 16:42:10,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 16:42:10,564 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 26 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 16:42:10,564 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 16:42:10,564 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506614631] [2021-06-06 16:42:10,564 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506614631] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 16:42:10,564 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416167922] [2021-06-06 16:42:10,564 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 [2021-06-06 16:42:10,603 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-06-06 16:42:10,604 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 16:42:10,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 10 conjunts are in the unsatisfiable core [2021-06-06 16:42:10,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 16:42:10,660 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 26 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 16:42:10,660 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416167922] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 16:42:10,661 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 16:42:10,661 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6] total 12 [2021-06-06 16:42:10,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013821447] [2021-06-06 16:42:10,661 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 16:42:10,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 16:42:10,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 16:42:10,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2021-06-06 16:42:10,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 16:42:10,662 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 16:42:10,662 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 12 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 16:42:10,662 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-06 16:42:10,662 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-06-06 16:42:10,662 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-06-06 16:42:10,662 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2021-06-06 16:42:10,662 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-06-06 16:42:10,662 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 16:42:10,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 16:42:10,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-06 16:42:10,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-06 16:42:10,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-06 16:42:10,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-06 16:42:10,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-06 16:42:10,932 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 16:42:10,933 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 16:42:10,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 16:42:10,933 INFO L82 PathProgramCache]: Analyzing trace with hash -452629517, now seen corresponding path program 6 times [2021-06-06 16:42:10,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 16:42:10,933 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977864514] [2021-06-06 16:42:10,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 16:42:10,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 16:42:11,169 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 16:42:11,169 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 16:42:11,169 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977864514] [2021-06-06 16:42:11,170 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977864514] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 16:42:11,170 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465925856] [2021-06-06 16:42:11,170 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 [2021-06-06 16:42:11,209 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-06-06 16:42:11,209 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 16:42:11,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 38 conjunts are in the unsatisfiable core [2021-06-06 16:42:11,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 16:42:11,731 INFO L354 Elim1Store]: treesize reduction 66, result has 59.0 percent of original size [2021-06-06 16:42:11,731 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 58 treesize of output 118 [2021-06-06 16:42:13,388 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 348 DAG size of output: 313 [2021-06-06 16:42:13,620 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 355 DAG size of output: 285 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown