/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.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/parray-copy.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2abb09bbbae98a04ae2fcc735832bfdba44f6fbc-2abb09b [2021-06-06 12:02:10,308 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-06 12:02:10,311 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-06 12:02:10,349 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-06 12:02:10,368 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-06 12:02:10,370 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-06 12:02:10,371 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-06 12:02:10,372 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-06 12:02:10,374 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-06 12:02:10,375 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-06 12:02:10,377 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-06 12:02:10,382 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-06 12:02:10,383 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-06 12:02:10,385 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-06 12:02:10,385 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-06 12:02:10,387 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-06 12:02:10,393 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-06 12:02:10,405 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.epf [2021-06-06 12:02:10,440 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-06 12:02:10,440 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-06 12:02:10,441 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-06 12:02:10,441 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-06 12:02:10,443 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-06 12:02:10,443 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-06 12:02:10,443 INFO L138 SettingsManager]: * Use SBE=true [2021-06-06 12:02:10,444 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-06 12:02:10,444 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-06 12:02:10,444 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-06 12:02:10,445 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-06 12:02:10,445 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-06 12:02:10,445 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-06 12:02:10,445 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-06 12:02:10,445 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-06 12:02:10,445 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-06 12:02:10,446 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-06 12:02:10,446 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-06 12:02:10,446 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-06 12:02:10,446 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-06 12:02:10,446 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-06 12:02:10,446 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-06 12:02:10,447 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-06 12:02:10,447 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-06 12:02:10,447 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-06 12:02:10,447 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-06 12:02:10,447 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-06 12:02:10,447 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-06 12:02:10,447 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-06 12:02:10,448 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-06 12:02:10,448 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-06-06 12:02:10,448 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-06 12:02:10,448 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-06-06 12:02:10,448 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-06 12:02:10,768 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-06 12:02:10,798 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-06 12:02:10,801 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-06 12:02:10,802 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-06 12:02:10,803 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-06 12:02:10,803 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/parray-copy.wvr.bpl [2021-06-06 12:02:10,804 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/parray-copy.wvr.bpl' [2021-06-06 12:02:10,831 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-06 12:02:10,833 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-06 12:02:10,834 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-06 12:02:10,834 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-06 12:02:10,834 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-06 12:02:10,845 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "parray-copy.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 12:02:10" (1/1) ... [2021-06-06 12:02:10,853 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "parray-copy.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 12:02:10" (1/1) ... [2021-06-06 12:02:10,860 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-06 12:02:10,862 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-06 12:02:10,863 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-06 12:02:10,863 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-06 12:02:10,870 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "parray-copy.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 12:02:10" (1/1) ... [2021-06-06 12:02:10,870 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "parray-copy.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 12:02:10" (1/1) ... [2021-06-06 12:02:10,872 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "parray-copy.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 12:02:10" (1/1) ... [2021-06-06 12:02:10,873 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "parray-copy.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 12:02:10" (1/1) ... [2021-06-06 12:02:10,876 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "parray-copy.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 12:02:10" (1/1) ... [2021-06-06 12:02:10,880 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "parray-copy.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 12:02:10" (1/1) ... [2021-06-06 12:02:10,881 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "parray-copy.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 12:02:10" (1/1) ... [2021-06-06 12:02:10,882 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-06 12:02:10,884 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-06 12:02:10,884 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-06 12:02:10,884 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-06 12:02:10,886 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "parray-copy.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 12:02:10" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-06 12:02:10,963 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-06 12:02:10,964 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-06 12:02:10,964 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-06 12:02:10,964 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-06 12:02:10,964 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-06 12:02:10,964 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-06 12:02:10,965 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-06 12:02:10,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-06 12:02:10,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-06 12:02:10,966 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-06 12:02:10,966 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-06 12:02:10,966 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-06 12:02:10,967 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 12:02:11,219 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-06 12:02:11,220 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-06 12:02:11,221 INFO L202 PluginConnector]: Adding new model parray-copy.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.06 12:02:11 BoogieIcfgContainer [2021-06-06 12:02:11,221 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-06 12:02:11,223 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-06 12:02:11,223 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-06 12:02:11,225 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-06 12:02:11,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "parray-copy.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 12:02:10" (1/2) ... [2021-06-06 12:02:11,226 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38f7c52c and model type parray-copy.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.06 12:02:11, skipping insertion in model container [2021-06-06 12:02:11,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "parray-copy.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.06 12:02:11" (2/2) ... [2021-06-06 12:02:11,227 INFO L111 eAbstractionObserver]: Analyzing ICFG parray-copy.wvr.bpl [2021-06-06 12:02:11,231 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-06 12:02:11,231 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-06 12:02:11,231 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-06 12:02:11,232 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-06 12:02:11,283 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-06-06 12:02:11,315 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-06-06 12:02:11,367 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-06 12:02:11,367 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-06 12:02:11,367 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-06 12:02:11,367 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-06 12:02:11,367 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-06 12:02:11,367 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-06 12:02:11,367 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-06 12:02:11,368 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-06 12:02:11,479 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 12:02:11,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 12:02:11,483 INFO L82 PathProgramCache]: Analyzing trace with hash -2035550714, now seen corresponding path program 1 times [2021-06-06 12:02:11,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 12:02:11,490 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523455544] [2021-06-06 12:02:11,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 12:02:11,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 12:02:11,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 12:02:11,633 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 12:02:11,633 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523455544] [2021-06-06 12:02:11,634 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523455544] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-06 12:02:11,634 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-06 12:02:11,634 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-06 12:02:11,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706368690] [2021-06-06 12:02:11,638 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-06 12:02:11,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 12:02:11,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-06 12:02:11,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-06-06 12:02:11,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 12:02:11,651 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 12:02:11,652 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 12:02:11,653 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 12:02:11,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-06 12:02:11,725 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-06 12:02:11,725 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 12:02:11,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 12:02:11,726 INFO L82 PathProgramCache]: Analyzing trace with hash -974802716, now seen corresponding path program 1 times [2021-06-06 12:02:11,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 12:02:11,726 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552808806] [2021-06-06 12:02:11,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 12:02:11,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 12:02:11,769 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 12:02:11,769 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 12:02:11,769 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552808806] [2021-06-06 12:02:11,769 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552808806] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-06 12:02:11,770 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-06 12:02:11,770 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-06 12:02:11,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772926821] [2021-06-06 12:02:11,771 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-06 12:02:11,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 12:02:11,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-06 12:02:11,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-06 12:02:11,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 12:02:11,773 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 12:02:11,773 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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 12:02:11,773 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-06 12:02:11,773 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 12:02:11,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-06 12:02:11,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 12:02:11,820 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-06 12:02:11,820 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 12:02:11,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 12:02:11,821 INFO L82 PathProgramCache]: Analyzing trace with hash -45419966, now seen corresponding path program 1 times [2021-06-06 12:02:11,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 12:02:11,821 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722189457] [2021-06-06 12:02:11,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 12:02:11,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 12:02:12,252 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 12:02:12,253 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 12:02:12,253 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722189457] [2021-06-06 12:02:12,253 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722189457] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 12:02:12,253 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485995127] [2021-06-06 12:02:12,253 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 12:02:12,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 12:02:12,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 11 conjunts are in the unsatisfiable core [2021-06-06 12:02:12,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 12:02:12,751 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-06-06 12:02:12,753 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 12:02:12,764 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 12:02:12,773 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-06-06 12:02:12,773 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:20 [2021-06-06 12:02:12,832 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 12:02:12,833 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [485995127] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 12:02:12,833 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 12:02:12,833 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 16 [2021-06-06 12:02:12,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306750692] [2021-06-06 12:02:12,834 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 12:02:12,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 12:02:12,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 12:02:12,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-06-06 12:02:12,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 12:02:12,838 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 12:02:12,839 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.5625) internal successors, (41), 16 states have internal predecessors, (41), 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 12:02:12,839 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-06 12:02:12,839 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 12:02:12,840 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 12:02:13,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-06 12:02:13,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 12:02:13,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-06 12:02:13,475 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 12:02:13,475 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 12:02:13,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 12:02:13,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1095765536, now seen corresponding path program 2 times [2021-06-06 12:02:13,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 12:02:13,476 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093111367] [2021-06-06 12:02:13,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 12:02:13,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 12:02:13,575 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 12:02:13,576 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 12:02:13,576 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093111367] [2021-06-06 12:02:13,577 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093111367] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 12:02:13,577 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905537911] [2021-06-06 12:02:13,578 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 12:02:13,622 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 12:02:13,622 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 12:02:13,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 12:02:13,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 12:02:13,794 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 12:02:13,794 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905537911] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 12:02:13,795 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 12:02:13,795 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-06-06 12:02:13,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696457513] [2021-06-06 12:02:13,797 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-06 12:02:13,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 12:02:13,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-06 12:02:13,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-06-06 12:02:13,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 12:02:13,803 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 12:02:13,803 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 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 12:02:13,803 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-06 12:02:13,803 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 12:02:13,803 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-06-06 12:02:13,803 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 12:02:14,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-06 12:02:14,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 12:02:14,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-06 12:02:14,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-06 12:02:14,232 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 12:02:14,233 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 12:02:14,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 12:02:14,233 INFO L82 PathProgramCache]: Analyzing trace with hash 714427236, now seen corresponding path program 1 times [2021-06-06 12:02:14,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 12:02:14,234 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833623621] [2021-06-06 12:02:14,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 12:02:14,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 12:02:14,326 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 12:02:14,327 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 12:02:14,327 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833623621] [2021-06-06 12:02:14,327 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833623621] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 12:02:14,327 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942261784] [2021-06-06 12:02:14,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 12:02:14,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 12:02:14,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 12:02:14,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 12:02:14,503 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 12:02:14,504 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [942261784] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 12:02:14,504 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 12:02:14,504 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-06 12:02:14,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769138417] [2021-06-06 12:02:14,504 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-06 12:02:14,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 12:02:14,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-06 12:02:14,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-06-06 12:02:14,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 12:02:14,505 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 12:02:14,505 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 12:02:14,506 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-06 12:02:14,506 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 12:02:14,506 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-06-06 12:02:14,506 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-06 12:02:14,506 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 12:02:14,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-06 12:02:14,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 12:02:14,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-06 12:02:14,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-06 12:02:14,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-06 12:02:14,857 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 12:02:14,858 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 12:02:14,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 12:02:14,858 INFO L82 PathProgramCache]: Analyzing trace with hash -1094612798, now seen corresponding path program 2 times [2021-06-06 12:02:14,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 12:02:14,858 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96495109] [2021-06-06 12:02:14,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 12:02:14,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 12:02:15,323 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 37 [2021-06-06 12:02:15,462 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2021-06-06 12:02:15,774 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 12:02:15,775 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 12:02:15,775 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96495109] [2021-06-06 12:02:15,775 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96495109] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 12:02:15,775 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237162505] [2021-06-06 12:02:15,775 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 12:02:15,812 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 12:02:15,813 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 12:02:15,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 16 conjunts are in the unsatisfiable core [2021-06-06 12:02:15,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 12:02:15,964 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-06-06 12:02:15,965 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 12:02:15,975 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 12:02:15,976 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-06 12:02:15,976 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:21, output treesize:20 [2021-06-06 12:02:16,042 INFO L354 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2021-06-06 12:02:16,042 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-06-06 12:02:16,044 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 12:02:16,059 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 12:02:16,063 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-06-06 12:02:16,063 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:33, output treesize:32 [2021-06-06 12:02:16,247 INFO L354 Elim1Store]: treesize reduction 40, result has 21.6 percent of original size [2021-06-06 12:02:16,248 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 28 [2021-06-06 12:02:16,250 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 12:02:16,265 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 12:02:16,276 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2021-06-06 12:02:16,276 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:42, output treesize:41 [2021-06-06 12:02:16,501 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-06-06 12:02:16,501 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [237162505] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 12:02:16,502 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 12:02:16,502 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11] total 24 [2021-06-06 12:02:16,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763954524] [2021-06-06 12:02:16,503 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-06-06 12:02:16,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 12:02:16,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-06-06 12:02:16,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=470, Unknown=0, NotChecked=0, Total=552 [2021-06-06 12:02:16,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 12:02:16,504 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 12:02:16,504 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 2.4166666666666665) internal successors, (58), 24 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 12:02:16,504 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-06 12:02:16,505 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 12:02:16,505 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-06-06 12:02:16,505 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-06 12:02:16,505 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-06-06 12:02:16,505 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 12:02:16,938 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 48 [2021-06-06 12:02:17,104 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2021-06-06 12:02:17,294 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 51 [2021-06-06 12:02:17,837 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 40 [2021-06-06 12:02:18,047 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 42 [2021-06-06 12:02:18,196 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 30 [2021-06-06 12:02:18,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-06 12:02:18,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 12:02:18,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-06 12:02:18,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-06 12:02:18,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-06 12:02:18,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-06 12:02:18,488 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-06-06 12:02:18,489 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 12:02:18,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 12:02:18,489 INFO L82 PathProgramCache]: Analyzing trace with hash 434863490, now seen corresponding path program 3 times [2021-06-06 12:02:18,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 12:02:18,490 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129394038] [2021-06-06 12:02:18,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 12:02:18,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 12:02:19,087 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2021-06-06 12:02:19,546 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 12:02:19,546 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 12:02:19,546 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129394038] [2021-06-06 12:02:19,546 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129394038] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 12:02:19,546 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907480382] [2021-06-06 12:02:19,546 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 12:02:19,585 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-06 12:02:19,585 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 12:02:19,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 18 conjunts are in the unsatisfiable core [2021-06-06 12:02:19,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 12:02:19,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-06-06 12:02:19,748 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 12:02:19,758 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 12:02:19,759 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-06 12:02:19,759 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:21, output treesize:20 [2021-06-06 12:02:19,818 INFO L354 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2021-06-06 12:02:19,819 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-06-06 12:02:19,823 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 12:02:19,836 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 12:02:19,838 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-06-06 12:02:19,838 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:33, output treesize:32 [2021-06-06 12:02:19,923 INFO L354 Elim1Store]: treesize reduction 40, result has 21.6 percent of original size [2021-06-06 12:02:19,923 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 28 [2021-06-06 12:02:19,937 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 12:02:19,954 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 12:02:19,960 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2021-06-06 12:02:19,960 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:45, output treesize:44 [2021-06-06 12:02:20,175 INFO L354 Elim1Store]: treesize reduction 72, result has 18.2 percent of original size [2021-06-06 12:02:20,176 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 30 treesize of output 38 [2021-06-06 12:02:20,184 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 12:02:20,209 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 12:02:20,217 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2021-06-06 12:02:20,218 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:54, output treesize:53 [2021-06-06 12:02:20,478 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-06-06 12:02:20,479 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1907480382] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 12:02:20,479 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 12:02:20,479 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12] total 27 [2021-06-06 12:02:20,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475462147] [2021-06-06 12:02:20,480 INFO L462 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-06-06 12:02:20,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 12:02:20,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-06-06 12:02:20,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=615, Unknown=0, NotChecked=0, Total=702 [2021-06-06 12:02:20,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 12:02:20,481 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 12:02:20,481 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 2.3703703703703702) internal successors, (64), 27 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 12:02:20,481 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-06 12:02:20,481 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 12:02:20,481 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-06-06 12:02:20,481 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-06 12:02:20,481 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-06-06 12:02:20,481 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2021-06-06 12:02:20,481 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 12:02:21,047 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 61 [2021-06-06 12:02:21,207 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 40 [2021-06-06 12:02:21,371 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 51 [2021-06-06 12:02:21,521 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 54 [2021-06-06 12:02:21,782 WARN L205 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 61 [2021-06-06 12:02:22,057 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 47 [2021-06-06 12:02:22,370 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 58 [2021-06-06 12:02:23,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-06 12:02:23,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 12:02:23,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-06 12:02:23,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-06 12:02:23,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-06 12:02:23,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-06 12:02:23,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-06 12:02:23,917 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 12:02:23,918 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 12:02:23,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 12:02:23,918 INFO L82 PathProgramCache]: Analyzing trace with hash -1153899710, now seen corresponding path program 4 times [2021-06-06 12:02:23,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 12:02:23,918 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779419080] [2021-06-06 12:02:23,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 12:02:23,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 12:02:24,664 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2021-06-06 12:02:25,089 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 2 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 12:02:25,089 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 12:02:25,089 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779419080] [2021-06-06 12:02:25,089 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779419080] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 12:02:25,089 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016877568] [2021-06-06 12:02:25,089 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 12:02:25,135 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 12:02:25,135 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 12:02:25,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-06 12:02:25,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 12:02:25,522 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-06-06 12:02:25,523 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 12:02:25,536 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 12:02:25,537 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-06 12:02:25,537 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:24, output treesize:23 [2021-06-06 12:02:25,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 12:02:25,594 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2021-06-06 12:02:25,596 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 12:02:25,611 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 12:02:25,612 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-06 12:02:25,612 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:35, output treesize:34 [2021-06-06 12:02:25,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 12:02:25,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 12:02:25,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 12:02:25,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 36 [2021-06-06 12:02:25,668 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 12:02:25,683 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 12:02:25,684 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-06 12:02:25,684 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:46, output treesize:45 [2021-06-06 12:02:25,784 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 38 [2021-06-06 12:02:25,786 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 12:02:25,804 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 12:02:25,805 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-06 12:02:25,805 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:42, output treesize:41 [2021-06-06 12:02:25,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 12:02:25,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 12:02:25,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 12:02:25,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 12:02:25,888 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 48 [2021-06-06 12:02:25,890 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 12:02:25,908 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 12:02:25,911 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-06-06 12:02:25,911 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:49, output treesize:48 [2021-06-06 12:02:26,016 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 12:02:26,016 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1016877568] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 12:02:26,016 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 12:02:26,017 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 34 [2021-06-06 12:02:26,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919982299] [2021-06-06 12:02:26,017 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-06-06 12:02:26,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 12:02:26,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-06-06 12:02:26,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=948, Unknown=0, NotChecked=0, Total=1122 [2021-06-06 12:02:26,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 12:02:26,018 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 12:02:26,019 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 2.235294117647059) internal successors, (76), 34 states have internal predecessors, (76), 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 12:02:26,019 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-06 12:02:26,019 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 12:02:26,019 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-06-06 12:02:26,019 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-06 12:02:26,019 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-06-06 12:02:26,019 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2021-06-06 12:02:26,019 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 28 states. [2021-06-06 12:02:26,019 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 12:02:26,268 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 39 [2021-06-06 12:02:26,503 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 47 [2021-06-06 12:02:26,644 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 32 [2021-06-06 12:02:27,009 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 42 [2021-06-06 12:02:27,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-06 12:02:27,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 12:02:27,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-06 12:02:27,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-06 12:02:27,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-06 12:02:27,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-06 12:02:27,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-06 12:02:27,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-06 12:02:27,579 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 12:02:27,579 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 12:02:27,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 12:02:27,580 INFO L82 PathProgramCache]: Analyzing trace with hash 855016224, now seen corresponding path program 5 times [2021-06-06 12:02:27,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 12:02:27,580 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294490036] [2021-06-06 12:02:27,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 12:02:27,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 12:02:27,740 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 16 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 12:02:27,740 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 12:02:27,740 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294490036] [2021-06-06 12:02:27,740 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294490036] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 12:02:27,741 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398331206] [2021-06-06 12:02:27,741 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 12:02:27,784 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-06-06 12:02:27,784 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 12:02:27,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 15 conjunts are in the unsatisfiable core [2021-06-06 12:02:27,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 12:02:28,147 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 25 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 12:02:28,147 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [398331206] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 12:02:28,147 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 12:02:28,147 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 28 [2021-06-06 12:02:28,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169501479] [2021-06-06 12:02:28,148 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-06-06 12:02:28,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 12:02:28,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-06-06 12:02:28,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=617, Unknown=0, NotChecked=0, Total=756 [2021-06-06 12:02:28,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 12:02:28,149 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 12:02:28,149 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 2.5357142857142856) internal successors, (71), 28 states have internal predecessors, (71), 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 12:02:28,149 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-06 12:02:28,149 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 12:02:28,149 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-06-06 12:02:28,149 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-06 12:02:28,149 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-06-06 12:02:28,149 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2021-06-06 12:02:28,149 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 28 states. [2021-06-06 12:02:28,149 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-06-06 12:02:28,150 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 12:02:29,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-06 12:02:29,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 12:02:29,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-06 12:02:29,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-06 12:02:29,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-06 12:02:29,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-06 12:02:29,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-06 12:02:29,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-06 12:02:29,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-06 12:02:29,332 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-06-06 12:02:29,333 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 12:02:29,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 12:02:29,333 INFO L82 PathProgramCache]: Analyzing trace with hash 1241071716, now seen corresponding path program 6 times [2021-06-06 12:02:29,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 12:02:29,334 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946046246] [2021-06-06 12:02:29,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 12:02:29,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 12:02:29,509 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 36 proven. 36 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 12:02:29,509 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 12:02:29,509 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946046246] [2021-06-06 12:02:29,509 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946046246] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 12:02:29,509 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936293773] [2021-06-06 12:02:29,509 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 12:02:29,554 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-06-06 12:02:29,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 12:02:29,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 15 conjunts are in the unsatisfiable core [2021-06-06 12:02:29,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 12:02:29,828 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 36 proven. 36 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 12:02:29,829 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936293773] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 12:02:29,829 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 12:02:29,829 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 23 [2021-06-06 12:02:29,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058532465] [2021-06-06 12:02:29,830 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-06-06 12:02:29,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 12:02:29,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-06-06 12:02:29,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=364, Unknown=0, NotChecked=0, Total=506 [2021-06-06 12:02:29,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 12:02:29,831 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 12:02:29,831 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 2.782608695652174) internal successors, (64), 23 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 12:02:29,831 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-06 12:02:29,831 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 12:02:29,831 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-06-06 12:02:29,831 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-06 12:02:29,831 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-06-06 12:02:29,831 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2021-06-06 12:02:29,831 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 28 states. [2021-06-06 12:02:29,832 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-06-06 12:02:29,832 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 37 states. [2021-06-06 12:02:29,832 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 12:02:30,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-06 12:02:30,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 12:02:30,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-06 12:02:30,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-06 12:02:30,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-06 12:02:30,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-06 12:02:30,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-06 12:02:30,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-06 12:02:30,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-06 12:02:30,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-06 12:02:30,279 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 12:02:30,280 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 12:02:30,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 12:02:30,280 INFO L82 PathProgramCache]: Analyzing trace with hash 510329282, now seen corresponding path program 7 times [2021-06-06 12:02:30,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 12:02:30,280 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901613043] [2021-06-06 12:02:30,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 12:02:30,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 12:02:31,213 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 53 [2021-06-06 12:02:32,008 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 9 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 12:02:32,009 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 12:02:32,009 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901613043] [2021-06-06 12:02:32,009 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901613043] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 12:02:32,009 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966007463] [2021-06-06 12:02:32,009 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 12:02:32,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 12:02:32,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 37 conjunts are in the unsatisfiable core [2021-06-06 12:02:32,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 12:02:32,606 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2021-06-06 12:02:32,607 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 12:02:32,620 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 12:02:32,621 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-06 12:02:32,621 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:28, output treesize:27 [2021-06-06 12:02:32,671 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-06-06 12:02:32,673 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 12:02:32,686 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 12:02:32,686 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-06 12:02:32,687 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:31, output treesize:30 [2021-06-06 12:02:32,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 12:02:32,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 12:02:32,741 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 32 [2021-06-06 12:02:32,742 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 12:02:32,757 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 12:02:32,758 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-06 12:02:32,758 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:42, output treesize:41 [2021-06-06 12:02:32,815 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 38 [2021-06-06 12:02:32,816 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 12:02:32,834 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 12:02:32,835 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-06 12:02:32,835 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:45, output treesize:44 [2021-06-06 12:02:32,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 12:02:32,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 12:02:32,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 12:02:32,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 12:02:32,903 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 52 [2021-06-06 12:02:32,905 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 12:02:32,925 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 12:02:32,926 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-06 12:02:32,926 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:56, output treesize:55 [2021-06-06 12:02:33,051 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 58 [2021-06-06 12:02:33,054 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 12:02:33,074 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 12:02:33,075 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-06 12:02:33,076 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:56, output treesize:55 [2021-06-06 12:02:33,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 12:02:33,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 12:02:33,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 12:02:33,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 12:02:33,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 12:02:33,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 12:02:33,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 68 [2021-06-06 12:02:33,169 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 12:02:33,192 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 12:02:33,194 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-06-06 12:02:33,194 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:63, output treesize:62 [2021-06-06 12:02:33,330 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 12:02:33,330 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [966007463] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 12:02:33,330 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 12:02:33,330 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 23] total 44 [2021-06-06 12:02:33,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991134447] [2021-06-06 12:02:33,331 INFO L462 AbstractCegarLoop]: Interpolant automaton has 44 states [2021-06-06 12:02:33,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 12:02:33,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-06-06 12:02:33,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=1663, Unknown=0, NotChecked=0, Total=1892 [2021-06-06 12:02:33,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 12:02:33,332 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 12:02:33,332 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 44 states, 44 states have (on average 2.090909090909091) internal successors, (92), 44 states have internal predecessors, (92), 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 12:02:33,333 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-06 12:02:33,333 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 12:02:33,333 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-06-06 12:02:33,333 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-06 12:02:33,333 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-06-06 12:02:33,333 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2021-06-06 12:02:33,333 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 28 states. [2021-06-06 12:02:33,333 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-06-06 12:02:33,333 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 37 states. [2021-06-06 12:02:33,333 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2021-06-06 12:02:33,333 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 12:02:35,192 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 22 [2021-06-06 12:02:35,558 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 23 [2021-06-06 12:02:35,835 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 62 [2021-06-06 12:02:36,069 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 54 [2021-06-06 12:02:36,354 WARN L205 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 64 [2021-06-06 12:02:38,315 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2021-06-06 12:02:38,488 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2021-06-06 12:02:38,706 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 57 [2021-06-06 12:02:38,913 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 70 [2021-06-06 12:02:38,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-06 12:02:38,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 12:02:38,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-06 12:02:38,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-06 12:02:38,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-06 12:02:38,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-06 12:02:38,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-06 12:02:38,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-06 12:02:38,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-06 12:02:38,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-06 12:02:38,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-06 12:02:39,148 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 12:02:39,149 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 12:02:39,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 12:02:39,149 INFO L82 PathProgramCache]: Analyzing trace with hash 251542146, now seen corresponding path program 8 times [2021-06-06 12:02:39,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 12:02:39,150 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154058851] [2021-06-06 12:02:39,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 12:02:39,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 12:02:39,862 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 37 [2021-06-06 12:02:40,254 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 54 [2021-06-06 12:02:41,121 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 11 proven. 103 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 12:02:41,121 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 12:02:41,122 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154058851] [2021-06-06 12:02:41,122 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154058851] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 12:02:41,122 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929946227] [2021-06-06 12:02:41,122 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 12:02:41,167 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 12:02:41,167 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 12:02:41,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 41 conjunts are in the unsatisfiable core [2021-06-06 12:02:41,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 12:02:41,814 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2021-06-06 12:02:41,815 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 12:02:41,827 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 12:02:41,827 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-06 12:02:41,827 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:28, output treesize:27 [2021-06-06 12:02:41,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-06-06 12:02:41,880 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 12:02:41,893 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 12:02:41,893 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-06 12:02:41,893 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:31, output treesize:30 [2021-06-06 12:02:41,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 12:02:41,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 12:02:41,949 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 32 [2021-06-06 12:02:41,951 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 12:02:41,966 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 12:02:41,966 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-06 12:02:41,967 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:42, output treesize:41 [2021-06-06 12:02:42,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 12:02:42,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 12:02:42,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 12:02:42,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 12:02:42,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 12:02:42,030 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 46 [2021-06-06 12:02:42,031 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 12:02:42,056 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 12:02:42,061 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-06 12:02:42,061 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:53, output treesize:52 [2021-06-06 12:02:42,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 12:02:42,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 12:02:42,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 12:02:42,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 12:02:42,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 12:02:42,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 12:02:42,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 12:02:42,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 12:02:42,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 12:02:42,137 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 60 [2021-06-06 12:02:42,139 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 12:02:42,158 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 12:02:42,158 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-06 12:02:42,159 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:64, output treesize:63 [2021-06-06 12:02:42,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 12:02:42,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 12:02:42,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 12:02:42,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 12:02:42,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 12:02:42,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 12:02:42,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 12:02:42,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 12:02:42,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 12:02:42,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 12:02:42,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 12:02:42,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 12:02:42,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 12:02:42,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 12:02:42,242 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 74 [2021-06-06 12:02:42,244 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 12:02:42,266 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 12:02:42,267 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-06 12:02:42,267 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:75, output treesize:74 [2021-06-06 12:02:42,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 68 [2021-06-06 12:02:42,409 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 12:02:42,430 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 12:02:42,431 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-06 12:02:42,431 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:63, output treesize:62 [2021-06-06 12:02:42,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 12:02:42,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 12:02:42,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 12:02:42,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 12:02:42,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 12:02:42,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 12:02:42,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 12:02:42,531 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 78 [2021-06-06 12:02:42,534 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 12:02:42,557 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 12:02:42,559 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-06-06 12:02:42,559 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:70, output treesize:69 [2021-06-06 12:02:42,691 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 12:02:42,691 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [929946227] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 12:02:42,691 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 12:02:42,691 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 25] total 48 [2021-06-06 12:02:42,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543637338] [2021-06-06 12:02:42,692 INFO L462 AbstractCegarLoop]: Interpolant automaton has 48 states [2021-06-06 12:02:42,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 12:02:42,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-06-06 12:02:42,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=1996, Unknown=0, NotChecked=0, Total=2256 [2021-06-06 12:02:42,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 12:02:42,693 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 12:02:42,694 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 48 states, 48 states have (on average 2.0833333333333335) internal successors, (100), 48 states have internal predecessors, (100), 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 12:02:42,694 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-06 12:02:42,694 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 12:02:42,694 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-06-06 12:02:42,694 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-06 12:02:42,694 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-06-06 12:02:42,694 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2021-06-06 12:02:42,694 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 28 states. [2021-06-06 12:02:42,694 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-06-06 12:02:42,694 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 37 states. [2021-06-06 12:02:42,694 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2021-06-06 12:02:42,694 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 52 states. [2021-06-06 12:02:42,695 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 12:02:44,698 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 22 [2021-06-06 12:02:45,062 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 23 [2021-06-06 12:02:45,336 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 61 [2021-06-06 12:02:45,545 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 52 [2021-06-06 12:02:45,808 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 62 [2021-06-06 12:02:47,964 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2021-06-06 12:02:48,123 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 66 [2021-06-06 12:02:48,345 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2021-06-06 12:02:48,545 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 69 [2021-06-06 12:02:48,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-06 12:02:48,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 12:02:48,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-06 12:02:48,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-06 12:02:48,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-06 12:02:48,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-06 12:02:48,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-06 12:02:48,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-06 12:02:48,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-06 12:02:48,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-06 12:02:48,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-06 12:02:48,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-06-06 12:02:48,764 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-06-06 12:02:48,765 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 12:02:48,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 12:02:48,765 INFO L82 PathProgramCache]: Analyzing trace with hash 722592834, now seen corresponding path program 9 times [2021-06-06 12:02:48,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 12:02:48,765 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668258910] [2021-06-06 12:02:48,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 12:02:48,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 12:02:49,876 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 54 [2021-06-06 12:02:50,045 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 60 [2021-06-06 12:02:50,602 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 50 [2021-06-06 12:02:51,234 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 16 proven. 130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 12:02:51,235 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 12:02:51,235 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668258910] [2021-06-06 12:02:51,235 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668258910] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 12:02:51,235 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [52354890] [2021-06-06 12:02:51,235 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 12:02:51,284 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-06-06 12:02:51,284 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 12:02:51,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-06 12:02:51,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 12:02:51,497 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-06-06 12:02:51,498 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 12:02:51,509 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 12:02:51,510 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-06 12:02:51,510 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:21, output treesize:20 [2021-06-06 12:02:51,583 INFO L354 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2021-06-06 12:02:51,583 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-06-06 12:02:51,585 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 12:02:51,600 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 12:02:51,602 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-06-06 12:02:51,602 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:33, output treesize:32 [2021-06-06 12:02:51,705 INFO L354 Elim1Store]: treesize reduction 40, result has 21.6 percent of original size [2021-06-06 12:02:51,706 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 28 [2021-06-06 12:02:51,707 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 12:02:51,727 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 12:02:51,732 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2021-06-06 12:02:51,732 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:45, output treesize:44 [2021-06-06 12:02:51,868 INFO L354 Elim1Store]: treesize reduction 72, result has 18.2 percent of original size [2021-06-06 12:02:51,868 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 30 treesize of output 38 [2021-06-06 12:02:51,870 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 12:02:51,892 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 12:02:51,897 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2021-06-06 12:02:51,897 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:57, output treesize:56 [2021-06-06 12:02:52,050 INFO L354 Elim1Store]: treesize reduction 112, result has 15.8 percent of original size [2021-06-06 12:02:52,051 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 37 treesize of output 48 [2021-06-06 12:02:52,052 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 12:02:52,079 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 12:02:52,086 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2021-06-06 12:02:52,087 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:69, output treesize:68 [2021-06-06 12:02:52,310 INFO L354 Elim1Store]: treesize reduction 160, result has 14.0 percent of original size [2021-06-06 12:02:52,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 44 treesize of output 58 [2021-06-06 12:02:52,312 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 12:02:52,345 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 12:02:52,355 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-1 vars, End of recursive call: 5 dim-0 vars, and 1 xjuncts. [2021-06-06 12:02:52,355 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:81, output treesize:80 [2021-06-06 12:02:52,685 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 26 [2021-06-06 12:02:52,685 INFO L354 Elim1Store]: treesize reduction 216, result has 12.6 percent of original size [2021-06-06 12:02:52,685 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 51 treesize of output 68 [2021-06-06 12:02:52,688 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 12:02:52,728 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 12:02:52,747 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-1 vars, End of recursive call: 6 dim-0 vars, and 1 xjuncts. [2021-06-06 12:02:52,748 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 7 variables, input treesize:93, output treesize:92 [2021-06-06 12:02:54,032 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 30 [2021-06-06 12:02:54,032 INFO L354 Elim1Store]: treesize reduction 280, result has 11.4 percent of original size [2021-06-06 12:02:54,032 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 58 treesize of output 78 [2021-06-06 12:02:54,035 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 12:02:54,082 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 12:02:54,097 INFO L550 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 1 dim-1 vars, End of recursive call: 7 dim-0 vars, and 1 xjuncts. [2021-06-06 12:02:54,097 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 8 variables, input treesize:105, output treesize:104 [2021-06-06 12:03:13,857 WARN L205 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2021-06-06 12:03:14,435 WARN L205 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 34 [2021-06-06 12:03:14,435 INFO L354 Elim1Store]: treesize reduction 352, result has 10.4 percent of original size [2021-06-06 12:03:14,436 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 65 treesize of output 88 [2021-06-06 12:03:14,438 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 12:03:14,499 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 12:03:14,515 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 1 dim-1 vars, End of recursive call: 8 dim-0 vars, and 1 xjuncts. [2021-06-06 12:03:14,515 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 9 variables, input treesize:114, output treesize:113 [2021-06-06 12:03:33,024 WARN L227 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2021-06-06 12:03:33,025 WARN L348 FreeRefinementEngine]: Global settings require throwing the following exception [2021-06-06 12:03:33,225 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-06-06 12:03:33,226 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:241) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:258) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:138) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:899) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:773) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:345) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:305) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:582) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:440) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:201) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:299) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:297) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:190) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:180) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:643) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:374) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:69) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:63) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:364) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:293) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:238) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1461) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:654) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:238) ... 46 more [2021-06-06 12:03:33,228 INFO L168 Benchmark]: Toolchain (without parser) took 82395.62 ms. Allocated memory was 396.4 MB in the beginning and 572.5 MB in the end (delta: 176.2 MB). Free memory was 375.6 MB in the beginning and 536.0 MB in the end (delta: -160.4 MB). Peak memory consumption was 341.7 MB. Max. memory is 16.0 GB. [2021-06-06 12:03:33,228 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.15 ms. Allocated memory is still 396.4 MB. Free memory was 376.7 MB in the beginning and 376.7 MB in the end (delta: 71.5 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-06 12:03:33,228 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.76 ms. Allocated memory is still 396.4 MB. Free memory was 375.5 MB in the beginning and 374.0 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-06 12:03:33,228 INFO L168 Benchmark]: Boogie Preprocessor took 20.49 ms. Allocated memory is still 396.4 MB. Free memory was 374.0 MB in the beginning and 373.1 MB in the end (delta: 972.4 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-06 12:03:33,229 INFO L168 Benchmark]: RCFGBuilder took 337.32 ms. Allocated memory is still 396.4 MB. Free memory was 373.0 MB in the beginning and 360.1 MB in the end (delta: 12.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-06-06 12:03:33,229 INFO L168 Benchmark]: TraceAbstraction took 82005.14 ms. Allocated memory was 396.4 MB in the beginning and 572.5 MB in the end (delta: 176.2 MB). Free memory was 359.6 MB in the beginning and 536.0 MB in the end (delta: -176.4 MB). Peak memory consumption was 327.0 MB. Max. memory is 16.0 GB. [2021-06-06 12:03:33,229 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 0.15 ms. Allocated memory is still 396.4 MB. Free memory was 376.7 MB in the beginning and 376.7 MB in the end (delta: 71.5 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 27.76 ms. Allocated memory is still 396.4 MB. Free memory was 375.5 MB in the beginning and 374.0 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 20.49 ms. Allocated memory is still 396.4 MB. Free memory was 374.0 MB in the beginning and 373.1 MB in the end (delta: 972.4 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 337.32 ms. Allocated memory is still 396.4 MB. Free memory was 373.0 MB in the beginning and 360.1 MB in the end (delta: 12.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * TraceAbstraction took 82005.14 ms. Allocated memory was 396.4 MB in the beginning and 572.5 MB in the end (delta: 176.2 MB). Free memory was 359.6 MB in the beginning and 536.0 MB in the end (delta: -176.4 MB). Peak memory consumption was 327.0 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:241) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...