/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleep-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/dot-product.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9bbddad6b14272d9691b7fb6f1c011d15ab18596-9bbddad [2021-06-13 17:28:37,691 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-13 17:28:37,693 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-13 17:28:37,729 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-13 17:28:37,751 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-13 17:28:37,753 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-13 17:28:37,754 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-13 17:28:37,756 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-13 17:28:37,759 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-13 17:28:37,760 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-13 17:28:37,762 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-13 17:28:37,767 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-13 17:28:37,768 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-13 17:28:37,787 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-13 17:28:37,788 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-13 17:28:37,790 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-13 17:28:37,796 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-13 17:28:37,809 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-NewStatesSleep-NoLbe.epf [2021-06-13 17:28:37,845 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-13 17:28:37,846 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-13 17:28:37,846 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-13 17:28:37,846 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-13 17:28:37,849 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-13 17:28:37,849 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-13 17:28:37,849 INFO L138 SettingsManager]: * Use SBE=true [2021-06-13 17:28:37,849 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-13 17:28:37,849 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-13 17:28:37,849 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-13 17:28:37,850 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-13 17:28:37,850 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-13 17:28:37,850 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-13 17:28:37,851 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-13 17:28:37,851 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-13 17:28:37,851 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-13 17:28:37,851 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-13 17:28:37,851 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-13 17:28:37,851 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-13 17:28:37,851 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-13 17:28:37,852 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-13 17:28:37,852 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-13 17:28:37,852 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-13 17:28:37,852 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-13 17:28:37,852 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-13 17:28:37,852 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-13 17:28:37,852 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-13 17:28:37,853 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-13 17:28:37,853 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-13 17:28:37,853 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-13 17:28:37,853 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-06-13 17:28:37,853 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-13 17:28:37,853 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2021-06-13 17:28:37,853 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-13 17:28:38,123 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-13 17:28:38,150 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-13 17:28:38,152 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-13 17:28:38,153 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-13 17:28:38,154 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-13 17:28:38,155 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/dot-product.wvr.bpl [2021-06-13 17:28:38,155 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/dot-product.wvr.bpl' [2021-06-13 17:28:38,177 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-13 17:28:38,179 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-13 17:28:38,180 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-13 17:28:38,180 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-13 17:28:38,180 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-13 17:28:38,191 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "dot-product.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 05:28:38" (1/1) ... [2021-06-13 17:28:38,198 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "dot-product.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 05:28:38" (1/1) ... [2021-06-13 17:28:38,204 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-13 17:28:38,205 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-13 17:28:38,205 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-13 17:28:38,205 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-13 17:28:38,211 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "dot-product.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 05:28:38" (1/1) ... [2021-06-13 17:28:38,212 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "dot-product.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 05:28:38" (1/1) ... [2021-06-13 17:28:38,212 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "dot-product.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 05:28:38" (1/1) ... [2021-06-13 17:28:38,213 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "dot-product.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 05:28:38" (1/1) ... [2021-06-13 17:28:38,215 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "dot-product.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 05:28:38" (1/1) ... [2021-06-13 17:28:38,217 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "dot-product.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 05:28:38" (1/1) ... [2021-06-13 17:28:38,218 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "dot-product.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 05:28:38" (1/1) ... [2021-06-13 17:28:38,219 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-13 17:28:38,220 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-13 17:28:38,220 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-13 17:28:38,220 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-13 17:28:38,222 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "dot-product.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 05:28:38" (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 [2021-06-13 17:28:38,280 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-13 17:28:38,280 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-13 17:28:38,280 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-13 17:28:38,280 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-13 17:28:38,280 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-13 17:28:38,280 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-13 17:28:38,281 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-13 17:28:38,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-13 17:28:38,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-13 17:28:38,281 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-13 17:28:38,281 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-13 17:28:38,281 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-13 17:28:38,282 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-13 17:28:38,447 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-13 17:28:38,447 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-13 17:28:38,449 INFO L202 PluginConnector]: Adding new model dot-product.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 05:28:38 BoogieIcfgContainer [2021-06-13 17:28:38,449 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-13 17:28:38,451 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-13 17:28:38,451 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-13 17:28:38,453 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-13 17:28:38,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "dot-product.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 05:28:38" (1/2) ... [2021-06-13 17:28:38,454 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6594db32 and model type dot-product.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.06 05:28:38, skipping insertion in model container [2021-06-13 17:28:38,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "dot-product.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 05:28:38" (2/2) ... [2021-06-13 17:28:38,455 INFO L111 eAbstractionObserver]: Analyzing ICFG dot-product.wvr.bpl [2021-06-13 17:28:38,460 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-13 17:28:38,460 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-13 17:28:38,460 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-13 17:28:38,473 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-13 17:28:38,535 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-06-13 17:28:38,559 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 [2021-06-13 17:28:38,604 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-13 17:28:38,605 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-13 17:28:38,605 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-13 17:28:38,605 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-13 17:28:38,605 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-13 17:28:38,605 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-13 17:28:38,605 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-13 17:28:38,605 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-13 17:28:38,709 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 17:28:38,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 17:28:38,714 INFO L82 PathProgramCache]: Analyzing trace with hash -1421528455, now seen corresponding path program 1 times [2021-06-13 17:28:38,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 17:28:38,722 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126845982] [2021-06-13 17:28:38,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 17:28:38,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 17:28:38,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 17:28:38,848 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 17:28:38,848 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126845982] [2021-06-13 17:28:38,849 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126845982] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 17:28:38,849 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 17:28:38,849 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-13 17:28:38,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348895348] [2021-06-13 17:28:38,853 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-13 17:28:38,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 17:28:38,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-13 17:28:38,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-13 17:28:38,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-13 17:28:38,867 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-13 17:28:38,876 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2021-06-13 17:28:38,877 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-13 17:28:38,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-13 17:28:38,914 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-13 17:28:38,914 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 17:28:38,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 17:28:38,917 INFO L82 PathProgramCache]: Analyzing trace with hash 690038743, now seen corresponding path program 1 times [2021-06-13 17:28:38,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 17:28:38,917 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576868443] [2021-06-13 17:28:38,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 17:28:38,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 17:28:38,989 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-13 17:28:38,989 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 17:28:38,989 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576868443] [2021-06-13 17:28:38,990 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576868443] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 17:28:38,990 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 17:28:38,990 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-13 17:28:38,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662399835] [2021-06-13 17:28:38,991 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-13 17:28:38,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 17:28:38,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-13 17:28:38,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-13 17:28:38,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-13 17:28:38,992 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-13 17:28:38,992 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 5.0) 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) [2021-06-13 17:28:38,993 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-13 17:28:38,993 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-13 17:28:39,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-13 17:28:39,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-13 17:28:39,068 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-13 17:28:39,068 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 17:28:39,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 17:28:39,069 INFO L82 PathProgramCache]: Analyzing trace with hash 2139358133, now seen corresponding path program 1 times [2021-06-13 17:28:39,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 17:28:39,070 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152980767] [2021-06-13 17:28:39,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 17:28:39,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 17:28:39,423 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 17:28:39,424 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 17:28:39,424 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152980767] [2021-06-13 17:28:39,424 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152980767] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 17:28:39,424 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1641821695] [2021-06-13 17:28:39,425 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 [2021-06-13 17:28:39,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 17:28:39,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 17 conjunts are in the unsatisfiable core [2021-06-13 17:28:39,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-13 17:28:39,760 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-13 17:28:39,764 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2021-06-13 17:28:39,770 INFO L550 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-06-13 17:28:39,777 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 17:28:39,779 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-13 17:28:39,780 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-06-13 17:28:39,785 INFO L550 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-06-13 17:28:39,791 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 17:28:39,795 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-06-13 17:28:39,797 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-13 17:28:39,802 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 17:28:39,805 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-06-13 17:28:39,805 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:29, output treesize:3 [2021-06-13 17:28:39,843 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 17:28:39,843 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1641821695] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 17:28:39,843 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-13 17:28:39,843 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-13 17:28:39,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285166211] [2021-06-13 17:28:39,844 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-13 17:28:39,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 17:28:39,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-13 17:28:39,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-06-13 17:28:39,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-13 17:28:39,845 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-13 17:28:39,846 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 11 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 17:28:39,846 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-13 17:28:39,846 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-13 17:28:39,846 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-13 17:28:39,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-13 17:28:39,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-13 17:28:39,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-13 17:28:40,209 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-13 17:28:40,209 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 17:28:40,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 17:28:40,210 INFO L82 PathProgramCache]: Analyzing trace with hash 428481043, now seen corresponding path program 2 times [2021-06-13 17:28:40,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 17:28:40,210 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881605185] [2021-06-13 17:28:40,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 17:28:40,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 17:28:40,288 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 17:28:40,289 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 17:28:40,289 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881605185] [2021-06-13 17:28:40,291 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881605185] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 17:28:40,291 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494870941] [2021-06-13 17:28:40,292 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 [2021-06-13 17:28:40,340 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-13 17:28:40,340 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-13 17:28:40,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-13 17:28:40,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-13 17:28:40,472 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 17:28:40,472 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1494870941] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 17:28:40,473 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-13 17:28:40,473 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-06-13 17:28:40,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950233191] [2021-06-13 17:28:40,473 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-13 17:28:40,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 17:28:40,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-13 17:28:40,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-06-13 17:28:40,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-13 17:28:40,474 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-13 17:28:40,475 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 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) [2021-06-13 17:28:40,475 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-13 17:28:40,475 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-13 17:28:40,475 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-13 17:28:40,475 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-13 17:28:40,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-13 17:28:40,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-13 17:28:40,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-13 17:28:40,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-13 17:28:40,892 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-13 17:28:40,893 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 17:28:40,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 17:28:40,893 INFO L82 PathProgramCache]: Analyzing trace with hash -59020201, now seen corresponding path program 1 times [2021-06-13 17:28:40,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 17:28:40,894 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692873247] [2021-06-13 17:28:40,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 17:28:40,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 17:28:40,955 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-13 17:28:40,956 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 17:28:40,956 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692873247] [2021-06-13 17:28:40,956 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692873247] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 17:28:40,956 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984876301] [2021-06-13 17:28:40,956 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 [2021-06-13 17:28:40,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 17:28:40,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-13 17:28:41,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-13 17:28:41,103 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-13 17:28:41,103 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1984876301] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 17:28:41,103 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-13 17:28:41,103 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-13 17:28:41,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686463529] [2021-06-13 17:28:41,104 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-13 17:28:41,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 17:28:41,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-13 17:28:41,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-06-13 17:28:41,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-13 17:28:41,107 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-13 17:28:41,107 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 17:28:41,108 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-13 17:28:41,108 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-13 17:28:41,108 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-13 17:28:41,108 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-13 17:28:41,108 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-13 17:28:41,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-13 17:28:41,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-13 17:28:41,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-13 17:28:41,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-13 17:28:41,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 17:28:41,405 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-13 17:28:41,405 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 17:28:41,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 17:28:41,406 INFO L82 PathProgramCache]: Analyzing trace with hash -1348287435, now seen corresponding path program 2 times [2021-06-13 17:28:41,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 17:28:41,406 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111247767] [2021-06-13 17:28:41,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 17:28:41,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 17:28:41,727 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 17:28:41,728 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 17:28:41,728 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111247767] [2021-06-13 17:28:41,728 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111247767] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 17:28:41,728 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119474844] [2021-06-13 17:28:41,728 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 [2021-06-13 17:28:41,782 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-13 17:28:41,782 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-13 17:28:41,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 37 conjunts are in the unsatisfiable core [2021-06-13 17:28:41,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-13 17:28:42,329 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 17:28:42,329 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 73 [2021-06-13 17:28:42,647 INFO L550 ElimStorePlain]: Start of recursive call 2: 4 dim-0 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2021-06-13 17:28:42,671 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 17:28:42,699 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 17:28:42,700 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 61 [2021-06-13 17:28:42,924 INFO L550 ElimStorePlain]: Start of recursive call 3: 4 dim-0 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2021-06-13 17:28:42,960 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 17:28:43,002 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 17:28:43,003 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 85 [2021-06-13 17:28:43,231 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 3 xjuncts. [2021-06-13 17:28:43,626 WARN L205 SmtUtils]: Spent 393.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 103 [2021-06-13 17:28:43,628 INFO L628 ElimStorePlain]: treesize reduction 322, result has 68.1 percent of original size [2021-06-13 17:28:43,972 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 140 [2021-06-13 17:28:44,275 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-06-13 17:28:44,276 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:77, output treesize:228 [2021-06-13 17:28:44,366 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 17:28:44,366 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119474844] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 17:28:44,366 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-13 17:28:44,366 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 16] total 25 [2021-06-13 17:28:44,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846431348] [2021-06-13 17:28:44,367 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-13 17:28:44,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 17:28:44,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-13 17:28:44,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=508, Unknown=0, NotChecked=0, Total=600 [2021-06-13 17:28:44,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-13 17:28:44,368 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-13 17:28:44,368 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 2.08) internal successors, (52), 25 states have internal predecessors, (52), 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) [2021-06-13 17:28:44,368 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-13 17:28:44,368 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-13 17:28:44,368 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-13 17:28:44,368 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-13 17:28:44,368 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-06-13 17:28:44,368 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-13 17:28:45,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-13 17:28:45,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-13 17:28:45,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-13 17:28:45,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-13 17:28:45,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 17:28:45,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-13 17:28:45,509 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-06-13 17:28:45,509 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 17:28:45,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 17:28:45,509 INFO L82 PathProgramCache]: Analyzing trace with hash 911449235, now seen corresponding path program 3 times [2021-06-13 17:28:45,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 17:28:45,509 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218833151] [2021-06-13 17:28:45,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 17:28:45,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 17:28:45,585 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 17:28:45,585 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 17:28:45,585 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218833151] [2021-06-13 17:28:45,585 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218833151] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 17:28:45,585 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860328404] [2021-06-13 17:28:45,586 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 [2021-06-13 17:28:45,620 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-06-13 17:28:45,620 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-13 17:28:45,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 11 conjunts are in the unsatisfiable core [2021-06-13 17:28:45,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-13 17:28:45,795 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 17:28:45,795 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860328404] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 17:28:45,795 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-13 17:28:45,795 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2021-06-13 17:28:45,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048327571] [2021-06-13 17:28:45,796 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-13 17:28:45,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 17:28:45,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-13 17:28:45,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2021-06-13 17:28:45,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-13 17:28:45,797 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-13 17:28:45,797 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.55) internal successors, (51), 20 states have internal predecessors, (51), 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) [2021-06-13 17:28:45,797 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-13 17:28:45,797 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-13 17:28:45,797 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-13 17:28:45,797 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-13 17:28:45,797 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-06-13 17:28:45,797 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-13 17:28:45,797 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-13 17:28:46,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-13 17:28:46,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-13 17:28:46,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-13 17:28:46,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-13 17:28:46,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 17:28:46,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-13 17:28:46,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-13 17:28:46,420 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-13 17:28:46,421 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 17:28:46,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 17:28:46,421 INFO L82 PathProgramCache]: Analyzing trace with hash -1145065769, now seen corresponding path program 4 times [2021-06-13 17:28:46,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 17:28:46,421 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323937043] [2021-06-13 17:28:46,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 17:28:46,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 17:28:46,489 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 16 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-13 17:28:46,490 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 17:28:46,490 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323937043] [2021-06-13 17:28:46,490 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323937043] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 17:28:46,490 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699912928] [2021-06-13 17:28:46,490 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 [2021-06-13 17:28:46,520 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-13 17:28:46,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-13 17:28:46,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 11 conjunts are in the unsatisfiable core [2021-06-13 17:28:46,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-13 17:28:46,636 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 16 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-13 17:28:46,636 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [699912928] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 17:28:46,636 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-13 17:28:46,636 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 17 [2021-06-13 17:28:46,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186479455] [2021-06-13 17:28:46,636 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-13 17:28:46,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 17:28:46,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-13 17:28:46,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2021-06-13 17:28:46,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-13 17:28:46,637 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-13 17:28:46,637 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 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) [2021-06-13 17:28:46,637 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-13 17:28:46,637 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-13 17:28:46,637 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-13 17:28:46,638 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-13 17:28:46,638 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-06-13 17:28:46,638 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-13 17:28:46,638 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2021-06-13 17:28:46,638 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-13 17:28:46,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-13 17:28:46,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-13 17:28:46,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-13 17:28:46,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-13 17:28:46,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 17:28:46,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-13 17:28:46,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-13 17:28:46,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-13 17:28:47,020 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable166 [2021-06-13 17:28:47,021 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 17:28:47,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 17:28:47,021 INFO L82 PathProgramCache]: Analyzing trace with hash 754469045, now seen corresponding path program 5 times [2021-06-13 17:28:47,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 17:28:47,021 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015875798] [2021-06-13 17:28:47,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 17:28:47,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 17:28:47,498 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 17:28:47,498 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 17:28:47,498 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015875798] [2021-06-13 17:28:47,498 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015875798] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 17:28:47,498 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2066132240] [2021-06-13 17:28:47,499 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 [2021-06-13 17:28:47,543 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-06-13 17:28:47,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-13 17:28:47,544 WARN L261 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 48 conjunts are in the unsatisfiable core [2021-06-13 17:28:47,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-13 17:28:56,399 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-06-13 17:28:56,875 WARN L205 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2021-06-13 17:28:56,930 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-13 17:28:56,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 17:28:56,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 17:28:56,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 17:28:56,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 17:28:56,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 77 [2021-06-13 17:28:56,945 INFO L550 ElimStorePlain]: Start of recursive call 2: 5 dim-0 vars, End of recursive call: 5 dim-0 vars, and 1 xjuncts. [2021-06-13 17:28:56,956 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 17:28:56,959 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-13 17:28:56,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 17:28:56,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 17:28:56,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 17:28:56,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 17:28:56,964 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 57 [2021-06-13 17:28:56,967 INFO L550 ElimStorePlain]: Start of recursive call 3: 5 dim-0 vars, End of recursive call: 5 dim-0 vars, and 1 xjuncts. [2021-06-13 17:28:56,976 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 17:28:57,037 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 17:28:57,038 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 57 treesize of output 137 [2021-06-13 17:28:57,224 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 125 [2021-06-13 17:28:57,445 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 137 [2021-06-13 17:28:57,627 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 133 [2021-06-13 17:28:57,800 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 130 [2021-06-13 17:28:58,014 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 197 [2021-06-13 17:28:58,422 WARN L205 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 258 DAG size of output: 240 [2021-06-13 17:28:59,533 WARN L205 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 307 DAG size of output: 287 [2021-06-13 17:29:00,608 WARN L205 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 307 DAG size of output: 287 [2021-06-13 17:29:01,691 WARN L205 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 315 DAG size of output: 295 [2021-06-13 17:29:02,067 WARN L205 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 242 [2021-06-13 17:29:02,584 WARN L205 SmtUtils]: Spent 513.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 231 [2021-06-13 17:29:02,980 WARN L205 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 184 [2021-06-13 17:29:03,112 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 198 [2021-06-13 17:29:03,248 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 198 [2021-06-13 17:29:04,159 WARN L205 SmtUtils]: Spent 478.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 242 [2021-06-13 17:29:04,538 WARN L205 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 240 [2021-06-13 17:29:04,919 WARN L205 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 240 [2021-06-13 17:29:05,696 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 157 [2021-06-13 17:29:06,757 WARN L205 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 285 DAG size of output: 287 [2021-06-13 17:29:07,824 WARN L205 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 313 DAG size of output: 293 [2021-06-13 17:29:08,829 WARN L205 SmtUtils]: Spent 1.00 s on a formula simplification. DAG size of input: 283 DAG size of output: 285 [2021-06-13 17:29:09,983 WARN L205 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 287 DAG size of output: 289 [2021-06-13 17:29:11,051 WARN L205 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 286 DAG size of output: 288 [2021-06-13 17:29:11,994 WARN L205 SmtUtils]: Spent 938.00 ms on a formula simplification. DAG size of input: 285 DAG size of output: 287 [2021-06-13 17:29:12,757 WARN L205 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 97 [2021-06-13 17:29:12,993 WARN L205 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 147 [2021-06-13 17:29:13,391 WARN L205 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 242 [2021-06-13 17:29:13,870 WARN L205 SmtUtils]: Spent 476.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 231 [2021-06-13 17:29:14,252 WARN L205 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 184 [2021-06-13 17:29:14,387 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 198 [2021-06-13 17:29:14,520 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 198 [2021-06-13 17:29:15,241 WARN L205 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 242 [2021-06-13 17:29:15,616 WARN L205 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 240 [2021-06-13 17:29:15,989 WARN L205 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 240 [2021-06-13 17:29:17,009 WARN L205 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 285 DAG size of output: 287 [2021-06-13 17:29:18,046 WARN L205 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 283 DAG size of output: 285 [2021-06-13 17:29:19,248 WARN L205 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 283 DAG size of output: 285 [2021-06-13 17:29:20,407 WARN L205 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 287 DAG size of output: 289 [2021-06-13 17:29:20,411 INFO L550 ElimStorePlain]: Start of recursive call 4: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2021-06-13 17:29:22,595 WARN L205 SmtUtils]: Spent 2.18 s on a formula simplification. DAG size of input: 290 DAG size of output: 248 [2021-06-13 17:29:22,596 INFO L628 ElimStorePlain]: treesize reduction 15036, result has 42.6 percent of original size [2021-06-13 17:29:23,008 WARN L205 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 247 DAG size of output: 249 [2021-06-13 17:29:23,309 WARN L205 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 234 DAG size of output: 236 [2021-06-13 17:29:24,142 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 188 [2021-06-13 17:29:24,586 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-06-13 17:29:24,587 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 5 variables, input treesize:106, output treesize:3 [2021-06-13 17:29:24,613 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 17:29:24,613 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2066132240] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 17:29:24,613 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-13 17:29:24,613 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 30 [2021-06-13 17:29:24,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907626060] [2021-06-13 17:29:24,617 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-06-13 17:29:24,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 17:29:24,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-06-13 17:29:24,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=740, Unknown=5, NotChecked=0, Total=870 [2021-06-13 17:29:24,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-13 17:29:24,618 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-13 17:29:24,618 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 2.2333333333333334) internal successors, (67), 30 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 17:29:24,618 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-13 17:29:24,618 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-13 17:29:24,618 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-13 17:29:24,618 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-13 17:29:24,618 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-06-13 17:29:24,618 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-13 17:29:24,618 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2021-06-13 17:29:24,618 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2021-06-13 17:29:24,618 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-13 17:30:26,404 WARN L205 SmtUtils]: Spent 1.46 s on a formula simplification that was a NOOP. DAG size: 56 [2021-06-13 17:30:26,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-13 17:30:26,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-13 17:30:26,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-13 17:30:26,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-13 17:30:26,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 17:30:26,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-13 17:30:26,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-13 17:30:26,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-13 17:30:26,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-13 17:30:27,034 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable167 [2021-06-13 17:30:27,035 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 17:30:27,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 17:30:27,035 INFO L82 PathProgramCache]: Analyzing trace with hash -127394481, now seen corresponding path program 6 times [2021-06-13 17:30:27,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 17:30:27,036 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971177828] [2021-06-13 17:30:27,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 17:30:27,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 17:30:27,157 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 18 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 17:30:27,158 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 17:30:27,158 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971177828] [2021-06-13 17:30:27,158 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971177828] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 17:30:27,158 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746805470] [2021-06-13 17:30:27,158 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 [2021-06-13 17:30:27,194 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-06-13 17:30:27,194 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-13 17:30:27,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 16 conjunts are in the unsatisfiable core [2021-06-13 17:30:27,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-13 17:30:27,433 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 18 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 17:30:27,434 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [746805470] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 17:30:27,434 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-13 17:30:27,434 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 29 [2021-06-13 17:30:27,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143547535] [2021-06-13 17:30:27,434 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-06-13 17:30:27,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 17:30:27,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-06-13 17:30:27,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=652, Unknown=0, NotChecked=0, Total=812 [2021-06-13 17:30:27,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-13 17:30:27,435 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-13 17:30:27,436 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 2.3793103448275863) internal successors, (69), 29 states have internal predecessors, (69), 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) [2021-06-13 17:30:27,436 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-13 17:30:27,436 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-13 17:30:27,436 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-13 17:30:27,436 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-13 17:30:27,436 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-06-13 17:30:27,436 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-13 17:30:27,436 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2021-06-13 17:30:27,436 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2021-06-13 17:30:27,436 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2021-06-13 17:30:27,436 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-13 17:30:27,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-13 17:30:27,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-13 17:30:27,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-13 17:30:27,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-13 17:30:27,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 17:30:27,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-13 17:30:27,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-13 17:30:27,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-13 17:30:27,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-13 17:30:27,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-13 17:30:27,828 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable647,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-13 17:30:27,829 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 17:30:27,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 17:30:27,829 INFO L82 PathProgramCache]: Analyzing trace with hash 726661421, now seen corresponding path program 7 times [2021-06-13 17:30:27,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 17:30:27,829 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933277730] [2021-06-13 17:30:27,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 17:30:27,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 17:30:28,649 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 1 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 17:30:28,649 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 17:30:28,649 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933277730] [2021-06-13 17:30:28,650 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933277730] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 17:30:28,650 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [826374292] [2021-06-13 17:30:28,650 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 [2021-06-13 17:30:28,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 17:30:28,684 WARN L261 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 64 conjunts are in the unsatisfiable core [2021-06-13 17:30:28,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-13 17:30:29,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 17:30:29,516 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-13 17:30:29,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 17:30:29,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 17:30:29,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 17:30:29,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 17:30:29,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 17:30:29,519 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-13 17:30:29,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 17:30:29,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 17:30:29,522 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-13 17:30:29,523 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 21 disjoint index pairs (out of 45 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 109 [2021-06-13 17:30:29,526 INFO L550 ElimStorePlain]: Start of recursive call 2: 7 dim-0 vars, End of recursive call: 7 dim-0 vars, and 1 xjuncts. [2021-06-13 17:30:29,535 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 17:30:29,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 17:30:29,538 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-13 17:30:29,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 17:30:29,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 17:30:29,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 17:30:29,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 17:30:29,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 17:30:29,542 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-13 17:30:29,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 17:30:29,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 17:30:29,544 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-13 17:30:29,545 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 21 disjoint index pairs (out of 45 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 77 [2021-06-13 17:30:29,549 INFO L550 ElimStorePlain]: Start of recursive call 3: 7 dim-0 vars, End of recursive call: 7 dim-0 vars, and 1 xjuncts. [2021-06-13 17:30:29,559 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 17:30:29,677 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2021-06-13 17:30:29,677 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 17:30:29,677 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 77 treesize of output 273 [2021-06-13 17:30:30,154 WARN L205 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 192 [2021-06-13 17:30:31,252 WARN L205 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 239 DAG size of output: 216 [2021-06-13 17:30:33,973 WARN L205 SmtUtils]: Spent 2.72 s on a formula simplification. DAG size of input: 270 DAG size of output: 240 [2021-06-13 17:30:36,690 WARN L205 SmtUtils]: Spent 2.71 s on a formula simplification. DAG size of input: 270 DAG size of output: 240 [2021-06-13 17:30:39,597 WARN L205 SmtUtils]: Spent 2.90 s on a formula simplification. DAG size of input: 292 DAG size of output: 262 [2021-06-13 17:30:49,399 WARN L205 SmtUtils]: Spent 9.80 s on a formula simplification. DAG size of input: 258 DAG size of output: 270 [2021-06-13 17:30:59,120 WARN L205 SmtUtils]: Spent 9.70 s on a formula simplification. DAG size of input: 253 DAG size of output: 274 [2021-06-13 17:31:08,840 WARN L205 SmtUtils]: Spent 9.72 s on a formula simplification. DAG size of input: 248 DAG size of output: 266 [2021-06-13 17:31:11,538 WARN L205 SmtUtils]: Spent 2.69 s on a formula simplification. DAG size of input: 240 DAG size of output: 240 [2021-06-13 17:31:11,860 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 145 [2021-06-13 17:31:12,952 WARN L205 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 219 DAG size of output: 219 [2021-06-13 17:31:13,408 WARN L205 SmtUtils]: Spent 453.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 197 [2021-06-13 17:31:13,783 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 155 [2021-06-13 17:31:14,208 WARN L205 SmtUtils]: Spent 423.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 167 [2021-06-13 17:31:14,844 WARN L205 SmtUtils]: Spent 633.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 161 [2021-06-13 17:31:15,083 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 163 [2021-06-13 17:31:16,166 WARN L205 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 326 DAG size of output: 308 [2021-06-13 17:31:19,403 WARN L205 SmtUtils]: Spent 3.23 s on a formula simplification. DAG size of input: 426 DAG size of output: 391 [2021-06-13 17:31:19,567 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 151 [2021-06-13 17:31:27,486 WARN L205 SmtUtils]: Spent 7.92 s on a formula simplification. DAG size of input: 513 DAG size of output: 465 [2021-06-13 17:31:47,214 WARN L205 SmtUtils]: Spent 19.73 s on a formula simplification. DAG size of input: 595 DAG size of output: 525 [2021-06-13 17:32:36,058 WARN L205 SmtUtils]: Spent 48.84 s on a formula simplification. DAG size of input: 694 DAG size of output: 619 [2021-06-13 17:34:33,543 WARN L205 SmtUtils]: Spent 1.96 m on a formula simplification. DAG size of input: 782 DAG size of output: 704 [2021-06-13 17:39:14,321 WARN L205 SmtUtils]: Spent 4.68 m on a formula simplification. DAG size of input: 867 DAG size of output: 788 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown