/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-array.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9bbddad6b14272d9691b7fb6f1c011d15ab18596-9bbddad [2021-06-13 17:28:07,159 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-13 17:28:07,161 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-13 17:28:07,186 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-13 17:28:07,201 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-13 17:28:07,203 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-13 17:28:07,204 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-13 17:28:07,204 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-13 17:28:07,205 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-13 17:28:07,206 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-13 17:28:07,209 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-13 17:28:07,213 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-13 17:28:07,214 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-13 17:28:07,216 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-13 17:28:07,217 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-13 17:28:07,218 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-13 17:28:07,223 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-13 17:28:07,229 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-13 17:28:07,229 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-13 17:28:07,230 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-13 17:28:07,230 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 17:28:07,261 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-13 17:28:07,262 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-13 17:28:07,262 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-13 17:28:07,262 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-13 17:28:07,264 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-13 17:28:07,264 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-13 17:28:07,264 INFO L138 SettingsManager]: * Use SBE=true [2021-06-13 17:28:07,264 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-13 17:28:07,264 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-13 17:28:07,265 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-13 17:28:07,265 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-13 17:28:07,265 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-13 17:28:07,265 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-13 17:28:07,265 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-13 17:28:07,266 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-13 17:28:07,266 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-13 17:28:07,266 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-13 17:28:07,266 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-13 17:28:07,266 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-13 17:28:07,266 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-13 17:28:07,266 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-13 17:28:07,266 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-13 17:28:07,266 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-13 17:28:07,266 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-13 17:28:07,267 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-13 17:28:07,267 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-13 17:28:07,267 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-13 17:28:07,274 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-13 17:28:07,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-13 17:28:07,274 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-13 17:28:07,274 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-06-13 17:28:07,274 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-13 17:28:07,275 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2021-06-13 17:28:07,275 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-13 17:28:07,522 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-13 17:28:07,535 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-13 17:28:07,536 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-13 17:28:07,537 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-13 17:28:07,538 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-13 17:28:07,538 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/dot-product-array.wvr.bpl [2021-06-13 17:28:07,538 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/dot-product-array.wvr.bpl' [2021-06-13 17:28:07,573 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-13 17:28:07,574 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-13 17:28:07,575 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-13 17:28:07,575 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-13 17:28:07,575 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-13 17:28:07,583 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 05:28:07" (1/1) ... [2021-06-13 17:28:07,589 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 05:28:07" (1/1) ... [2021-06-13 17:28:07,594 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-13 17:28:07,597 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-13 17:28:07,597 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-13 17:28:07,597 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-13 17:28:07,602 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 05:28:07" (1/1) ... [2021-06-13 17:28:07,602 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 05:28:07" (1/1) ... [2021-06-13 17:28:07,603 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 05:28:07" (1/1) ... [2021-06-13 17:28:07,604 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 05:28:07" (1/1) ... [2021-06-13 17:28:07,607 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 05:28:07" (1/1) ... [2021-06-13 17:28:07,610 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 05:28:07" (1/1) ... [2021-06-13 17:28:07,610 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 05:28:07" (1/1) ... [2021-06-13 17:28:07,614 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-13 17:28:07,616 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-13 17:28:07,616 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-13 17:28:07,616 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-13 17:28:07,617 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 05:28:07" (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 17:28:07,667 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-13 17:28:07,667 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-13 17:28:07,668 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-13 17:28:07,668 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-13 17:28:07,668 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-13 17:28:07,668 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-13 17:28:07,668 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-13 17:28:07,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-13 17:28:07,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-13 17:28:07,669 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-13 17:28:07,669 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-13 17:28:07,669 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-13 17:28:07,670 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 17:28:07,813 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-13 17:28:07,813 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-13 17:28:07,814 INFO L202 PluginConnector]: Adding new model dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 05:28:07 BoogieIcfgContainer [2021-06-13 17:28:07,814 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-13 17:28:07,816 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-13 17:28:07,816 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-13 17:28:07,817 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-13 17:28:07,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 05:28:07" (1/2) ... [2021-06-13 17:28:07,818 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a2ade9b and model type dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.06 05:28:07, skipping insertion in model container [2021-06-13 17:28:07,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 05:28:07" (2/2) ... [2021-06-13 17:28:07,819 INFO L111 eAbstractionObserver]: Analyzing ICFG dot-product-array.wvr.bpl [2021-06-13 17:28:07,822 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-13 17:28:07,823 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-13 17:28:07,823 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-13 17:28:07,837 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-13 17:28:07,889 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-06-13 17:28:07,902 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 17:28:07,972 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-13 17:28:07,972 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-13 17:28:07,973 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-13 17:28:07,973 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-13 17:28:07,973 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-13 17:28:07,973 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-13 17:28:07,973 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-13 17:28:07,973 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-13 17:28:08,058 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 17:28:08,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 17:28:08,061 INFO L82 PathProgramCache]: Analyzing trace with hash -1421528455, now seen corresponding path program 1 times [2021-06-13 17:28:08,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 17:28:08,067 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961637762] [2021-06-13 17:28:08,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 17:28:08,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 17:28:08,169 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 17:28:08,169 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 17:28:08,169 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961637762] [2021-06-13 17:28:08,170 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961637762] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 17:28:08,170 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 17:28:08,171 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-13 17:28:08,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739423696] [2021-06-13 17:28:08,175 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-13 17:28:08,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 17:28:08,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-13 17:28:08,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-13 17:28:08,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-13 17:28:08,184 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-13 17:28:08,189 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 17:28:08,189 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-13 17:28:08,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-13 17:28:08,222 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-13 17:28:08,222 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 17:28:08,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 17:28:08,225 INFO L82 PathProgramCache]: Analyzing trace with hash 690038743, now seen corresponding path program 1 times [2021-06-13 17:28:08,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 17:28:08,226 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46884681] [2021-06-13 17:28:08,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 17:28:08,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 17:28:08,270 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 17:28:08,270 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 17:28:08,270 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46884681] [2021-06-13 17:28:08,270 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46884681] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 17:28:08,271 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 17:28:08,271 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-13 17:28:08,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289633651] [2021-06-13 17:28:08,272 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-13 17:28:08,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 17:28:08,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-13 17:28:08,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-13 17:28:08,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-13 17:28:08,273 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-13 17:28:08,273 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 17:28:08,273 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-13 17:28:08,273 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-13 17:28:08,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-13 17:28:08,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-13 17:28:08,301 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-13 17:28:08,301 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 17:28:08,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 17:28:08,302 INFO L82 PathProgramCache]: Analyzing trace with hash 2139358133, now seen corresponding path program 1 times [2021-06-13 17:28:08,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 17:28:08,302 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987340423] [2021-06-13 17:28:08,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 17:28:08,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 17:28:08,476 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 17:28:08,476 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 17:28:08,476 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987340423] [2021-06-13 17:28:08,477 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987340423] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 17:28:08,477 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140306814] [2021-06-13 17:28:08,477 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) [2021-06-13 17:28:08,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 17:28:08,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 17 conjunts are in the unsatisfiable core Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-13 17:28:08,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-13 17:28:08,756 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-13 17:28:08,767 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 17:28:08,776 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 17:28:08,791 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 17:28:08,793 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-13 17:28:08,794 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 17:28:08,797 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 17:28:08,803 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 17:28:08,805 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 17:28:08,806 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-13 17:28:08,810 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 17:28:08,813 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 17:28:08,815 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:29, output treesize:3 [2021-06-13 17:28:08,850 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 17:28:08,850 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1140306814] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 17:28:08,850 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-13 17:28:08,851 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-13 17:28:08,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134130997] [2021-06-13 17:28:08,852 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-13 17:28:08,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 17:28:08,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-13 17:28:08,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-06-13 17:28:08,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-13 17:28:08,856 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-13 17:28:08,857 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 17:28:08,857 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-13 17:28:08,857 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-13 17:28:08,857 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-13 17:28:08,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-13 17:28:08,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-13 17:28:08,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-13 17:28:09,212 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-13 17:28:09,213 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 17:28:09,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 17:28:09,214 INFO L82 PathProgramCache]: Analyzing trace with hash 428481043, now seen corresponding path program 2 times [2021-06-13 17:28:09,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 17:28:09,214 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141060163] [2021-06-13 17:28:09,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 17:28:09,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 17:28:09,262 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 17:28:09,263 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 17:28:09,263 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141060163] [2021-06-13 17:28:09,264 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141060163] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 17:28:09,264 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740132860] [2021-06-13 17:28:09,265 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 17:28:09,314 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-13 17:28:09,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-13 17:28:09,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-13 17:28:09,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-13 17:28:09,405 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 17:28:09,406 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [740132860] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 17:28:09,406 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-13 17:28:09,406 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-06-13 17:28:09,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908248656] [2021-06-13 17:28:09,406 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-13 17:28:09,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 17:28:09,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-13 17:28:09,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-06-13 17:28:09,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-13 17:28:09,407 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-13 17:28:09,407 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 17:28:09,407 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-13 17:28:09,407 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-13 17:28:09,407 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-13 17:28:09,407 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-13 17:28:09,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-13 17:28:09,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-13 17:28:09,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-13 17:28:09,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-13 17:28:09,762 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-13 17:28:09,763 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 17:28:09,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 17:28:09,763 INFO L82 PathProgramCache]: Analyzing trace with hash -59020201, now seen corresponding path program 1 times [2021-06-13 17:28:09,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 17:28:09,764 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144389169] [2021-06-13 17:28:09,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 17:28:09,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 17:28:09,807 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 17:28:09,807 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 17:28:09,807 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144389169] [2021-06-13 17:28:09,807 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144389169] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 17:28:09,808 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969528197] [2021-06-13 17:28:09,808 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 17:28:09,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 17:28:09,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-13 17:28:09,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-13 17:28:09,913 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 17:28:09,913 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1969528197] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 17:28:09,913 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-13 17:28:09,913 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-13 17:28:09,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304680944] [2021-06-13 17:28:09,914 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-13 17:28:09,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 17:28:09,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-13 17:28:09,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-06-13 17:28:09,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-13 17:28:09,914 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-13 17:28:09,915 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 17:28:09,915 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-13 17:28:09,915 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-13 17:28:09,915 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-13 17:28:09,915 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-13 17:28:09,915 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-13 17:28:10,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-13 17:28:10,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-13 17:28:10,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-13 17:28:10,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-13 17:28:10,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 17:28:10,204 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-13 17:28:10,205 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 17:28:10,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 17:28:10,205 INFO L82 PathProgramCache]: Analyzing trace with hash -1348287435, now seen corresponding path program 2 times [2021-06-13 17:28:10,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 17:28:10,206 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535286857] [2021-06-13 17:28:10,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 17:28:10,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 17:28:10,470 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 17:28:10,470 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 17:28:10,470 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535286857] [2021-06-13 17:28:10,470 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535286857] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 17:28:10,470 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546688538] [2021-06-13 17:28:10,471 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 17:28:10,500 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-13 17:28:10,500 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-13 17:28:10,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 37 conjunts are in the unsatisfiable core [2021-06-13 17:28:10,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-13 17:28:10,950 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 17:28:10,950 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 17:28:11,110 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 17:28:11,126 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 17:28:11,143 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 17:28:11,144 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 17:28:11,307 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 17:28:11,337 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 17:28:11,375 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 17:28:11,375 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 17:28:11,563 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 3 xjuncts. [2021-06-13 17:28:11,869 WARN L205 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 103 [2021-06-13 17:28:11,869 INFO L628 ElimStorePlain]: treesize reduction 322, result has 68.1 percent of original size [2021-06-13 17:28:12,281 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 17:28:12,282 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:77, output treesize:228 [2021-06-13 17:28:12,344 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 17:28:12,344 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1546688538] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 17:28:12,344 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-13 17:28:12,344 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 16] total 25 [2021-06-13 17:28:12,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238162032] [2021-06-13 17:28:12,345 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-13 17:28:12,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 17:28:12,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-13 17:28:12,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=508, Unknown=0, NotChecked=0, Total=600 [2021-06-13 17:28:12,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-13 17:28:12,346 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-13 17:28:12,346 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 17:28:12,346 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-13 17:28:12,346 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-13 17:28:12,346 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-13 17:28:12,346 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-13 17:28:12,346 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-06-13 17:28:12,346 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-13 17:28:13,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-13 17:28:13,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-13 17:28:13,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-13 17:28:13,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-13 17:28:13,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 17:28:13,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-13 17:28:13,316 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-06-13 17:28:13,317 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 17:28:13,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 17:28:13,317 INFO L82 PathProgramCache]: Analyzing trace with hash 911449235, now seen corresponding path program 3 times [2021-06-13 17:28:13,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 17:28:13,317 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590277721] [2021-06-13 17:28:13,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 17:28:13,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 17:28:13,377 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 17:28:13,377 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 17:28:13,377 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590277721] [2021-06-13 17:28:13,377 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590277721] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 17:28:13,377 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644547922] [2021-06-13 17:28:13,377 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 17:28:13,418 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-06-13 17:28:13,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-13 17:28:13,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 11 conjunts are in the unsatisfiable core [2021-06-13 17:28:13,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-13 17:28:13,543 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 17:28:13,543 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1644547922] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 17:28:13,543 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-13 17:28:13,543 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2021-06-13 17:28:13,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181057280] [2021-06-13 17:28:13,544 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-13 17:28:13,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 17:28:13,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-13 17:28:13,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2021-06-13 17:28:13,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-13 17:28:13,544 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-13 17:28:13,545 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 17:28:13,545 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-13 17:28:13,545 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-13 17:28:13,545 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-13 17:28:13,545 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-13 17:28:13,545 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-06-13 17:28:13,545 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-13 17:28:13,545 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-13 17:28:13,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-13 17:28:13,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-13 17:28:13,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-13 17:28:13,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-13 17:28:13,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 17:28:13,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-13 17:28:13,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-13 17:28:14,076 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-13 17:28:14,076 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 17:28:14,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 17:28:14,076 INFO L82 PathProgramCache]: Analyzing trace with hash -1145065769, now seen corresponding path program 4 times [2021-06-13 17:28:14,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 17:28:14,077 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641100451] [2021-06-13 17:28:14,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 17:28:14,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 17:28:14,141 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 17:28:14,141 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 17:28:14,141 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641100451] [2021-06-13 17:28:14,141 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641100451] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 17:28:14,141 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305358773] [2021-06-13 17:28:14,141 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 17:28:14,167 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-13 17:28:14,167 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-13 17:28:14,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 11 conjunts are in the unsatisfiable core [2021-06-13 17:28:14,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-13 17:28:14,259 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 17:28:14,259 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [305358773] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 17:28:14,259 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-13 17:28:14,259 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 17 [2021-06-13 17:28:14,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439538535] [2021-06-13 17:28:14,259 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-13 17:28:14,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 17:28:14,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-13 17:28:14,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2021-06-13 17:28:14,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-13 17:28:14,260 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-13 17:28:14,260 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 17:28:14,260 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-13 17:28:14,260 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-13 17:28:14,260 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-13 17:28:14,260 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-13 17:28:14,261 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-06-13 17:28:14,261 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-13 17:28:14,261 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2021-06-13 17:28:14,261 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-13 17:28:14,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-13 17:28:14,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-13 17:28:14,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-13 17:28:14,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-13 17:28:14,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 17:28:14,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-13 17:28:14,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-13 17:28:14,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-13 17:28:14,568 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable166 [2021-06-13 17:28:14,569 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 17:28:14,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 17:28:14,569 INFO L82 PathProgramCache]: Analyzing trace with hash 754469045, now seen corresponding path program 5 times [2021-06-13 17:28:14,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 17:28:14,570 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020234260] [2021-06-13 17:28:14,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 17:28:14,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 17:28:14,978 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 17:28:14,978 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 17:28:14,987 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020234260] [2021-06-13 17:28:14,987 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020234260] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 17:28:14,987 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833900349] [2021-06-13 17:28:14,988 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 17:28:15,020 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-06-13 17:28:15,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-13 17:28:15,021 WARN L261 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 48 conjunts are in the unsatisfiable core [2021-06-13 17:28:15,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-13 17:28:23,396 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-06-13 17:28:23,776 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2021-06-13 17:28:23,809 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-13 17:28:23,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 17:28:23,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 17:28:23,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 17:28:23,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 17:28:23,813 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 17:28:23,818 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 17:28:23,827 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 17:28:23,829 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-13 17:28:23,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 17:28:23,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 17:28:23,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 17:28:23,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 17:28:23,832 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 17:28:23,835 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 17:28:23,843 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 17:28:23,892 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 17:28:23,893 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 17:28:24,575 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 197 [2021-06-13 17:28:24,946 WARN L205 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 258 DAG size of output: 240 [2021-06-13 17:28:25,969 WARN L205 SmtUtils]: Spent 986.00 ms on a formula simplification. DAG size of input: 307 DAG size of output: 287 [2021-06-13 17:28:26,952 WARN L205 SmtUtils]: Spent 981.00 ms on a formula simplification. DAG size of input: 307 DAG size of output: 287 [2021-06-13 17:28:27,951 WARN L205 SmtUtils]: Spent 985.00 ms on a formula simplification. DAG size of input: 315 DAG size of output: 295 [2021-06-13 17:28:28,331 WARN L205 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 242 [2021-06-13 17:28:28,811 WARN L205 SmtUtils]: Spent 475.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 231 [2021-06-13 17:28:29,092 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 184 [2021-06-13 17:28:29,230 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 198 [2021-06-13 17:28:29,365 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 198 [2021-06-13 17:28:30,056 WARN L205 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 242 [2021-06-13 17:28:30,437 WARN L205 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 240 [2021-06-13 17:28:30,849 WARN L205 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 240 [2021-06-13 17:28:31,463 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 157 [2021-06-13 17:28:32,530 WARN L205 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 285 DAG size of output: 287 [2021-06-13 17:28:33,586 WARN L205 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 313 DAG size of output: 293 [2021-06-13 17:28:34,600 WARN L205 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 283 DAG size of output: 285 [2021-06-13 17:28:35,758 WARN L205 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 287 DAG size of output: 289 [2021-06-13 17:28:36,830 WARN L205 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 286 DAG size of output: 288 [2021-06-13 17:28:37,781 WARN L205 SmtUtils]: Spent 946.00 ms on a formula simplification. DAG size of input: 285 DAG size of output: 287 [2021-06-13 17:28:38,366 WARN L205 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 97 [2021-06-13 17:28:38,600 WARN L205 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 147 [2021-06-13 17:28:38,992 WARN L205 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 242 [2021-06-13 17:28:39,472 WARN L205 SmtUtils]: Spent 473.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 231 [2021-06-13 17:28:39,741 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 184 [2021-06-13 17:28:39,873 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 198 [2021-06-13 17:28:40,005 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 198 [2021-06-13 17:28:40,673 WARN L205 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 242 [2021-06-13 17:28:41,052 WARN L205 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 240 [2021-06-13 17:28:41,434 WARN L205 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 240 [2021-06-13 17:28:42,456 WARN L205 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 285 DAG size of output: 287 [2021-06-13 17:28:43,475 WARN L205 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 283 DAG size of output: 285 [2021-06-13 17:28:44,490 WARN L205 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 283 DAG size of output: 285 [2021-06-13 17:28:45,655 WARN L205 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 287 DAG size of output: 289 [2021-06-13 17:28:45,659 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 17:28:47,650 WARN L205 SmtUtils]: Spent 1.99 s on a formula simplification. DAG size of input: 290 DAG size of output: 248 [2021-06-13 17:28:47,651 INFO L628 ElimStorePlain]: treesize reduction 15036, result has 42.6 percent of original size [2021-06-13 17:28:48,061 WARN L205 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 247 DAG size of output: 249 [2021-06-13 17:28:48,370 WARN L205 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 234 DAG size of output: 236 [2021-06-13 17:28:49,431 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 17:28:49,431 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 5 variables, input treesize:106, output treesize:3 [2021-06-13 17:28:49,461 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 17:28:49,461 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833900349] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 17:28:49,461 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-13 17:28:49,461 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 30 [2021-06-13 17:28:49,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171413687] [2021-06-13 17:28:49,462 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-06-13 17:28:49,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 17:28:49,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-06-13 17:28:49,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=740, Unknown=5, NotChecked=0, Total=870 [2021-06-13 17:28:49,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-13 17:28:49,463 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-13 17:28:49,463 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 17:28:49,463 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-13 17:28:49,463 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-13 17:28:49,463 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-13 17:28:49,463 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-13 17:28:49,463 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-06-13 17:28:49,463 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-13 17:28:49,463 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2021-06-13 17:28:49,463 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2021-06-13 17:28:49,463 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-13 17:29:47,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-13 17:29:47,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-13 17:29:47,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-13 17:29:47,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-13 17:29:47,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 17:29:47,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-13 17:29:47,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-13 17:29:47,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-13 17:29:47,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-13 17:29:47,621 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable167 [2021-06-13 17:29:47,621 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 17:29:47,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 17:29:47,621 INFO L82 PathProgramCache]: Analyzing trace with hash -127394481, now seen corresponding path program 6 times [2021-06-13 17:29:47,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 17:29:47,622 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151243550] [2021-06-13 17:29:47,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 17:29:47,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 17:29:47,721 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 17:29:47,721 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 17:29:47,721 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151243550] [2021-06-13 17:29:47,721 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151243550] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 17:29:47,721 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137102144] [2021-06-13 17:29:47,721 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 17:29:47,752 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-06-13 17:29:47,752 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-13 17:29:47,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 16 conjunts are in the unsatisfiable core [2021-06-13 17:29:47,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-13 17:29:47,945 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 17:29:47,946 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2137102144] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 17:29:47,946 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-13 17:29:47,946 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 29 [2021-06-13 17:29:47,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441561628] [2021-06-13 17:29:47,946 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-06-13 17:29:47,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 17:29:47,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-06-13 17:29:47,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=652, Unknown=0, NotChecked=0, Total=812 [2021-06-13 17:29:47,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-13 17:29:47,947 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-13 17:29:47,947 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 17:29:47,947 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-13 17:29:47,947 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-13 17:29:47,947 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-13 17:29:47,947 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-13 17:29:47,947 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-06-13 17:29:47,947 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-13 17:29:47,947 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2021-06-13 17:29:47,948 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2021-06-13 17:29:47,948 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2021-06-13 17:29:47,948 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-13 17:29:48,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-13 17:29:48,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-13 17:29:48,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-13 17:29:48,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-13 17:29:48,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 17:29:48,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-13 17:29:48,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-13 17:29:48,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-13 17:29:48,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-13 17:29:48,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-13 17:29:48,288 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable647,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-13 17:29:48,289 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 17:29:48,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 17:29:48,289 INFO L82 PathProgramCache]: Analyzing trace with hash 726661421, now seen corresponding path program 7 times [2021-06-13 17:29:48,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 17:29:48,289 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686209082] [2021-06-13 17:29:48,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 17:29:48,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 17:29:48,927 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 17:29:48,928 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 17:29:48,928 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686209082] [2021-06-13 17:29:48,928 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686209082] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 17:29:48,928 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110036824] [2021-06-13 17:29:48,928 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 17:29:48,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 17:29:48,962 WARN L261 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 64 conjunts are in the unsatisfiable core [2021-06-13 17:29:48,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-13 17:29:49,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 17:29:49,704 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-13 17:29:49,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 17:29:49,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 17:29:49,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 17:29:49,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 17:29:49,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 17:29:49,708 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-13 17:29:49,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 17:29:49,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 17:29:49,709 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-13 17:29:49,710 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 17:29:49,713 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 17:29:49,722 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 17:29:49,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 17:29:49,724 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-13 17:29:49,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 17:29:49,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 17:29:49,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 17:29:49,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 17:29:49,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 17:29:49,728 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-13 17:29:49,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 17:29:49,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 17:29:49,730 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-13 17:29:49,730 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 17:29:49,733 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 17:29:49,741 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 17:29:49,862 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2021-06-13 17:29:49,862 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 17:29:49,862 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 17:29:50,323 WARN L205 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 192 [2021-06-13 17:29:51,401 WARN L205 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 239 DAG size of output: 216 [2021-06-13 17:29:54,156 WARN L205 SmtUtils]: Spent 2.75 s on a formula simplification. DAG size of input: 270 DAG size of output: 240 [2021-06-13 17:29:56,832 WARN L205 SmtUtils]: Spent 2.67 s on a formula simplification. DAG size of input: 270 DAG size of output: 240 [2021-06-13 17:29:59,739 WARN L205 SmtUtils]: Spent 2.90 s on a formula simplification. DAG size of input: 292 DAG size of output: 262 [2021-06-13 17:30:09,645 WARN L205 SmtUtils]: Spent 9.90 s on a formula simplification. DAG size of input: 258 DAG size of output: 270 [2021-06-13 17:30:19,465 WARN L205 SmtUtils]: Spent 9.82 s on a formula simplification. DAG size of input: 253 DAG size of output: 274 [2021-06-13 17:30:29,183 WARN L205 SmtUtils]: Spent 9.71 s on a formula simplification. DAG size of input: 248 DAG size of output: 266 [2021-06-13 17:30:31,874 WARN L205 SmtUtils]: Spent 2.69 s on a formula simplification. DAG size of input: 240 DAG size of output: 240 [2021-06-13 17:30:32,151 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 145 [2021-06-13 17:30:33,246 WARN L205 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 219 DAG size of output: 219 [2021-06-13 17:30:33,686 WARN L205 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 197 [2021-06-13 17:30:33,959 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 155 [2021-06-13 17:30:34,378 WARN L205 SmtUtils]: Spent 417.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 167 [2021-06-13 17:30:35,000 WARN L205 SmtUtils]: Spent 619.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 161 [2021-06-13 17:30:36,203 WARN L205 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 326 DAG size of output: 308 [2021-06-13 17:30:39,369 WARN L205 SmtUtils]: Spent 3.16 s on a formula simplification. DAG size of input: 426 DAG size of output: 391 [2021-06-13 17:30:39,531 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 151 [2021-06-13 17:30:47,521 WARN L205 SmtUtils]: Spent 7.99 s on a formula simplification. DAG size of input: 513 DAG size of output: 465 [2021-06-13 17:31:06,944 WARN L205 SmtUtils]: Spent 19.42 s on a formula simplification. DAG size of input: 595 DAG size of output: 525 [2021-06-13 17:31:56,040 WARN L205 SmtUtils]: Spent 49.09 s on a formula simplification. DAG size of input: 694 DAG size of output: 619 [2021-06-13 17:33:54,581 WARN L205 SmtUtils]: Spent 1.98 m on a formula simplification. DAG size of input: 782 DAG size of output: 704 [2021-06-13 17:38:34,429 WARN L205 SmtUtils]: Spent 4.66 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