/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-Sleep-NoLbe-Delay.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/inc-subseq-array.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-12 10:11:46,399 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-12 10:11:46,400 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-12 10:11:46,430 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-12 10:11:46,474 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-Sleep-NoLbe-Delay.epf [2021-03-12 10:11:46,501 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-12 10:11:46,501 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-12 10:11:46,501 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-03-12 10:11:46,501 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-03-12 10:11:46,504 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-12 10:11:46,504 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-12 10:11:46,504 INFO L138 SettingsManager]: * Use SBE=true [2021-03-12 10:11:46,504 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-12 10:11:46,504 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-12 10:11:46,504 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-12 10:11:46,505 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-12 10:11:46,505 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-12 10:11:46,505 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-12 10:11:46,505 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-12 10:11:46,505 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-12 10:11:46,505 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-12 10:11:46,506 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-12 10:11:46,506 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-12 10:11:46,506 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-12 10:11:46,506 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-12 10:11:46,506 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-12 10:11:46,506 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-12 10:11:46,506 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-12 10:11:46,506 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-12 10:11:46,506 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-12 10:11:46,506 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-12 10:11:46,507 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-12 10:11:46,507 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-12 10:11:46,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-12 10:11:46,507 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-03-12 10:11:46,507 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-03-12 10:11:46,507 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-12 10:11:46,507 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-03-12 10:11:46,507 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-12 10:11:46,747 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-12 10:11:46,769 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-12 10:11:46,770 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-12 10:11:46,771 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-12 10:11:46,772 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-12 10:11:46,773 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/inc-subseq-array.wvr.bpl [2021-03-12 10:11:46,773 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/inc-subseq-array.wvr.bpl' [2021-03-12 10:11:46,791 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-12 10:11:46,815 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-12 10:11:46,816 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-12 10:11:46,816 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-12 10:11:46,816 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-12 10:11:46,824 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "inc-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 10:11:46" (1/1) ... [2021-03-12 10:11:46,828 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "inc-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 10:11:46" (1/1) ... [2021-03-12 10:11:46,833 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-12 10:11:46,833 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-12 10:11:46,833 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-12 10:11:46,834 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-12 10:11:46,838 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "inc-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 10:11:46" (1/1) ... [2021-03-12 10:11:46,838 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "inc-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 10:11:46" (1/1) ... [2021-03-12 10:11:46,839 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "inc-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 10:11:46" (1/1) ... [2021-03-12 10:11:46,840 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "inc-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 10:11:46" (1/1) ... [2021-03-12 10:11:46,841 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "inc-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 10:11:46" (1/1) ... [2021-03-12 10:11:46,843 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "inc-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 10:11:46" (1/1) ... [2021-03-12 10:11:46,843 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "inc-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 10:11:46" (1/1) ... [2021-03-12 10:11:46,844 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-12 10:11:46,845 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-12 10:11:46,845 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-12 10:11:46,845 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-12 10:11:46,846 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "inc-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 10:11:46" (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 [2021-03-12 10:11:46,907 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-03-12 10:11:46,907 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-12 10:11:46,907 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-12 10:11:46,907 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-03-12 10:11:46,908 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-12 10:11:46,908 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-12 10:11:46,908 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-12 10:11:46,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-12 10:11:46,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-12 10:11:46,908 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-12 10:11:47,114 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-12 10:11:47,114 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-12 10:11:47,115 INFO L202 PluginConnector]: Adding new model inc-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.03 10:11:47 BoogieIcfgContainer [2021-03-12 10:11:47,116 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-12 10:11:47,117 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-12 10:11:47,117 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-12 10:11:47,118 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-12 10:11:47,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "inc-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 10:11:46" (1/2) ... [2021-03-12 10:11:47,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@403e1d7c and model type inc-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.03 10:11:47, skipping insertion in model container [2021-03-12 10:11:47,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "inc-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.03 10:11:47" (2/2) ... [2021-03-12 10:11:47,120 INFO L111 eAbstractionObserver]: Analyzing ICFG inc-subseq-array.wvr.bpl [2021-03-12 10:11:47,123 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-12 10:11:47,124 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-12 10:11:47,126 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-12 10:11:47,126 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-12 10:11:47,185 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-03-12 10:11:47,195 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-03-12 10:11:47,288 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-12 10:11:47,288 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-12 10:11:47,288 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-12 10:11:47,288 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-12 10:11:47,288 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-12 10:11:47,288 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-12 10:11:47,288 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-12 10:11:47,288 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-12 10:11:47,364 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 10:11:47,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 10:11:47,367 INFO L82 PathProgramCache]: Analyzing trace with hash 1116390347, now seen corresponding path program 1 times [2021-03-12 10:11:47,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 10:11:47,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245487153] [2021-03-12 10:11:47,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 10:11:47,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 10:11:47,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 10:11:47,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245487153] [2021-03-12 10:11:47,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 10:11:47,463 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-12 10:11:47,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954904509] [2021-03-12 10:11:47,469 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-12 10:11:47,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 10:11:47,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-12 10:11:47,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-12 10:11:47,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-12 10:11:47,482 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-03-12 10:11:47,485 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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) [2021-03-12 10:11:47,485 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-03-12 10:11:47,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:11:47,547 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-12 10:11:47,547 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 10:11:47,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 10:11:47,550 INFO L82 PathProgramCache]: Analyzing trace with hash -1484219061, now seen corresponding path program 1 times [2021-03-12 10:11:47,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 10:11:47,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169003675] [2021-03-12 10:11:47,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 10:11:47,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 10:11:47,595 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-03-12 10:11:47,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169003675] [2021-03-12 10:11:47,595 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 10:11:47,595 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-12 10:11:47,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627810803] [2021-03-12 10:11:47,596 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-12 10:11:47,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 10:11:47,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-12 10:11:47,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-12 10:11:47,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-12 10:11:47,597 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-03-12 10:11:47,597 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 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) [2021-03-12 10:11:47,597 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:11:47,597 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-03-12 10:11:47,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:11:47,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:11:47,608 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-12 10:11:47,608 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 10:11:47,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 10:11:47,609 INFO L82 PathProgramCache]: Analyzing trace with hash 1675419287, now seen corresponding path program 2 times [2021-03-12 10:11:47,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 10:11:47,609 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287591908] [2021-03-12 10:11:47,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 10:11:47,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 10:11:47,626 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-03-12 10:11:47,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287591908] [2021-03-12 10:11:47,626 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 10:11:47,626 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-12 10:11:47,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135202844] [2021-03-12 10:11:47,627 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-12 10:11:47,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 10:11:47,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-12 10:11:47,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-12 10:11:47,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-12 10:11:47,627 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-03-12 10:11:47,628 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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) [2021-03-12 10:11:47,628 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:11:47,628 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:11:47,628 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-03-12 10:11:47,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:11:47,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:11:47,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:11:47,637 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-12 10:11:47,637 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 10:11:47,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 10:11:47,638 INFO L82 PathProgramCache]: Analyzing trace with hash 1507447386, now seen corresponding path program 1 times [2021-03-12 10:11:47,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 10:11:47,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737055592] [2021-03-12 10:11:47,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 10:11:47,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 10:11:47,736 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 10:11:47,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737055592] [2021-03-12 10:11:47,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619916061] [2021-03-12 10:11:47,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-12 10:11:47,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 10:11:47,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 11 conjunts are in the unsatisfiable core [2021-03-12 10:11:47,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-12 10:11:47,901 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-03-12 10:11:47,903 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-12 10:11:47,907 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 10:11:47,909 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-03-12 10:11:47,909 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:14, output treesize:7 [2021-03-12 10:11:47,943 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-03-12 10:11:47,946 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-12 10:11:47,949 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 10:11:47,950 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-03-12 10:11:47,951 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:5 [2021-03-12 10:11:47,968 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 10:11:47,968 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-12 10:11:47,968 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 11 [2021-03-12 10:11:47,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246266421] [2021-03-12 10:11:47,970 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-12 10:11:47,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 10:11:47,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-12 10:11:47,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-03-12 10:11:47,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-12 10:11:47,972 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-03-12 10:11:47,974 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 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) [2021-03-12 10:11:47,974 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:11:47,974 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:11:47,974 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:11:47,974 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-03-12 10:11:48,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:11:48,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:11:48,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:11:48,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-12 10:11:48,316 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-12 10:11:48,316 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 10:11:48,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 10:11:48,317 INFO L82 PathProgramCache]: Analyzing trace with hash 392188772, now seen corresponding path program 1 times [2021-03-12 10:11:48,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 10:11:48,317 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326020855] [2021-03-12 10:11:48,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 10:11:48,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 10:11:48,384 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-03-12 10:11:48,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326020855] [2021-03-12 10:11:48,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542066251] [2021-03-12 10:11:48,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-12 10:11:48,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 10:11:48,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 4 conjunts are in the unsatisfiable core [2021-03-12 10:11:48,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-12 10:11:48,485 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-03-12 10:11:48,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-12 10:11:48,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3] total 6 [2021-03-12 10:11:48,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278113572] [2021-03-12 10:11:48,486 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-12 10:11:48,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 10:11:48,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-12 10:11:48,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-03-12 10:11:48,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-12 10:11:48,487 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-03-12 10:11:48,487 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 10:11:48,487 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:11:48,487 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:11:48,487 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:11:48,487 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-03-12 10:11:48,487 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-03-12 10:11:48,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:11:48,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:11:48,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:11:48,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-12 10:11:48,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-12 10:11:48,738 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-12 10:11:48,740 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 10:11:48,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 10:11:48,740 INFO L82 PathProgramCache]: Analyzing trace with hash 696560499, now seen corresponding path program 2 times [2021-03-12 10:11:48,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 10:11:48,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347750863] [2021-03-12 10:11:48,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 10:11:48,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 10:11:48,959 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 10:11:48,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347750863] [2021-03-12 10:11:48,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138971812] [2021-03-12 10:11:48,959 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-12 10:11:49,004 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-12 10:11:49,005 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-12 10:11:49,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 23 conjunts are in the unsatisfiable core [2021-03-12 10:11:49,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-12 10:11:49,189 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 10:11:49,189 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 27 [2021-03-12 10:11:49,197 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-12 10:11:49,204 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 10:11:49,206 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-03-12 10:11:49,206 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:40, output treesize:26 [2021-03-12 10:11:49,351 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-03-12 10:11:49,351 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2021-03-12 10:11:49,354 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-12 10:11:49,357 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 10:11:49,357 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-03-12 10:11:49,357 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:23, output treesize:5 [2021-03-12 10:11:49,371 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 10:11:49,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-12 10:11:49,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14] total 23 [2021-03-12 10:11:49,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842836389] [2021-03-12 10:11:49,371 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-03-12 10:11:49,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 10:11:49,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-03-12 10:11:49,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=450, Unknown=0, NotChecked=0, Total=552 [2021-03-12 10:11:49,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-12 10:11:49,373 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-03-12 10:11:49,373 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 23 states have internal predecessors, (49), 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) [2021-03-12 10:11:49,373 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:11:49,373 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:11:49,373 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:11:49,373 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-03-12 10:11:49,373 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-03-12 10:11:49,373 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-03-12 10:11:49,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:11:49,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:11:49,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:11:49,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-12 10:11:49,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-12 10:11:49,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-03-12 10:11:49,791 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-12 10:11:49,791 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 10:11:49,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 10:11:49,792 INFO L82 PathProgramCache]: Analyzing trace with hash -233153263, now seen corresponding path program 2 times [2021-03-12 10:11:49,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 10:11:49,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575739603] [2021-03-12 10:11:49,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 10:11:49,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 10:11:49,843 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-03-12 10:11:49,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575739603] [2021-03-12 10:11:49,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724158089] [2021-03-12 10:11:49,843 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 [2021-03-12 10:11:49,894 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-12 10:11:49,894 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-12 10:11:49,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 6 conjunts are in the unsatisfiable core [2021-03-12 10:11:49,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-12 10:11:49,954 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-03-12 10:11:49,954 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-12 10:11:49,954 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4] total 8 [2021-03-12 10:11:49,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652212205] [2021-03-12 10:11:49,956 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-12 10:11:49,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 10:11:49,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-12 10:11:49,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-12 10:11:49,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-12 10:11:49,959 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-03-12 10:11:49,959 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 8 states have internal predecessors, (57), 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) [2021-03-12 10:11:49,959 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:11:49,959 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:11:49,959 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:11:49,959 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-03-12 10:11:49,959 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-03-12 10:11:49,959 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-03-12 10:11:49,959 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-03-12 10:11:49,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:11:49,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:11:49,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:11:49,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-12 10:11:49,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-12 10:11:49,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-03-12 10:11:49,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-12 10:11:50,205 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-12 10:11:50,205 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 10:11:50,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 10:11:50,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1353098016, now seen corresponding path program 3 times [2021-03-12 10:11:50,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 10:11:50,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118013318] [2021-03-12 10:11:50,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 10:11:50,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 10:11:50,551 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 10:11:50,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118013318] [2021-03-12 10:11:50,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094409407] [2021-03-12 10:11:50,552 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) [2021-03-12 10:11:50,603 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-03-12 10:11:50,603 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-12 10:11:50,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 36 conjunts are in the unsatisfiable core [2021-03-12 10:11:50,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-12 10:11:50,955 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 10:11:50,955 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 53 [2021-03-12 10:11:50,969 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-12 10:11:51,008 INFO L628 ElimStorePlain]: treesize reduction 43, result has 60.2 percent of original size [2021-03-12 10:11:51,012 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-03-12 10:11:51,012 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:56, output treesize:37 [2021-03-12 10:11:51,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:11:51,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:11:51,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:11:51,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:11:51,338 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-12 10:11:51,352 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 10:11:51,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 41 [2021-03-12 10:11:51,384 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-03-12 10:11:51,395 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 10:11:51,404 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-03-12 10:11:51,404 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:52, output treesize:21 [2021-03-12 10:11:51,477 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 10:11:51,477 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-12 10:11:51,477 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 21] total 39 [2021-03-12 10:11:51,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586962822] [2021-03-12 10:11:51,478 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-03-12 10:11:51,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 10:11:51,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-03-12 10:11:51,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=1332, Unknown=0, NotChecked=0, Total=1560 [2021-03-12 10:11:51,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-12 10:11:51,479 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-03-12 10:11:51,479 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 40 states, 40 states have (on average 1.875) internal successors, (75), 39 states have internal predecessors, (75), 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) [2021-03-12 10:11:51,479 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:11:51,479 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:11:51,479 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:11:51,479 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-03-12 10:11:51,480 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-03-12 10:11:51,480 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-03-12 10:11:51,480 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-03-12 10:11:51,480 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-03-12 10:11:52,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:11:52,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:11:52,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:11:52,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-12 10:11:52,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-12 10:11:52,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-03-12 10:11:52,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-12 10:11:52,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-03-12 10:11:52,476 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-12 10:11:52,476 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 10:11:52,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 10:11:52,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1578753977, now seen corresponding path program 4 times [2021-03-12 10:11:52,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 10:11:52,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294696490] [2021-03-12 10:11:52,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 10:11:52,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 10:11:53,076 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 10:11:53,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294696490] [2021-03-12 10:11:53,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1157105668] [2021-03-12 10:11:53,076 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 [2021-03-12 10:11:53,117 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-12 10:11:53,117 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-12 10:11:53,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 47 conjunts are in the unsatisfiable core [2021-03-12 10:11:53,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-12 10:11:53,623 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 10:11:53,623 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 61 treesize of output 87 [2021-03-12 10:11:53,637 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-12 10:11:53,711 INFO L628 ElimStorePlain]: treesize reduction 51, result has 73.2 percent of original size [2021-03-12 10:11:53,733 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-03-12 10:11:53,733 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:72, output treesize:72 [2021-03-12 10:11:54,137 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-03-12 10:11:54,138 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 44 treesize of output 16 [2021-03-12 10:11:54,139 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-12 10:11:54,141 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 10:11:54,142 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-03-12 10:11:54,142 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:45, output treesize:5 [2021-03-12 10:11:54,153 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 10:11:54,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-12 10:11:54,153 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 26] total 49 [2021-03-12 10:11:54,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476637095] [2021-03-12 10:11:54,154 INFO L460 AbstractCegarLoop]: Interpolant automaton has 50 states [2021-03-12 10:11:54,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 10:11:54,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-03-12 10:11:54,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=289, Invalid=2161, Unknown=0, NotChecked=0, Total=2450 [2021-03-12 10:11:54,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-12 10:11:54,155 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-03-12 10:11:54,155 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 50 states, 50 states have (on average 1.7) internal successors, (85), 49 states have internal predecessors, (85), 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) [2021-03-12 10:11:54,155 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:11:54,155 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:11:54,155 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:11:54,155 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-03-12 10:11:54,155 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-03-12 10:11:54,155 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-03-12 10:11:54,155 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-03-12 10:11:54,155 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2021-03-12 10:11:54,155 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-03-12 10:11:55,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:11:55,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:11:55,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:11:55,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-12 10:11:55,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-12 10:11:55,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-03-12 10:11:55,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-12 10:11:55,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-03-12 10:11:55,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-03-12 10:11:55,461 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-12 10:11:55,461 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 10:11:55,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 10:11:55,462 INFO L82 PathProgramCache]: Analyzing trace with hash -964360489, now seen corresponding path program 3 times [2021-03-12 10:11:55,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 10:11:55,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366164839] [2021-03-12 10:11:55,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 10:11:55,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 10:11:55,556 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 45 proven. 45 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-03-12 10:11:55,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366164839] [2021-03-12 10:11:55,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2000105718] [2021-03-12 10:11:55,557 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 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 [2021-03-12 10:11:55,593 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-03-12 10:11:55,593 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-12 10:11:55,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-12 10:11:55,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-12 10:11:55,706 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 45 proven. 45 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-03-12 10:11:55,706 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-12 10:11:55,707 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6] total 12 [2021-03-12 10:11:55,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920534580] [2021-03-12 10:11:55,709 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-03-12 10:11:55,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 10:11:55,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-03-12 10:11:55,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2021-03-12 10:11:55,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-12 10:11:55,709 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-03-12 10:11:55,710 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 12 states have internal predecessors, (83), 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) [2021-03-12 10:11:55,710 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:11:55,710 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:11:55,710 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:11:55,710 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-03-12 10:11:55,710 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-03-12 10:11:55,710 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-03-12 10:11:55,710 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-03-12 10:11:55,710 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2021-03-12 10:11:55,710 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 27 states. [2021-03-12 10:11:55,710 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-03-12 10:11:55,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:11:55,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:11:55,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:11:55,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-12 10:11:55,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-12 10:11:55,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-03-12 10:11:55,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-12 10:11:55,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-03-12 10:11:55,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-03-12 10:11:55,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-12 10:11:55,963 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2021-03-12 10:11:55,963 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 10:11:55,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 10:11:55,964 INFO L82 PathProgramCache]: Analyzing trace with hash -1821942298, now seen corresponding path program 5 times [2021-03-12 10:11:55,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 10:11:55,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081537286] [2021-03-12 10:11:55,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 10:11:55,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 10:11:56,814 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 10:11:56,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081537286] [2021-03-12 10:11:56,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653880753] [2021-03-12 10:11:56,815 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 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 [2021-03-12 10:11:56,845 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-03-12 10:11:56,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-12 10:11:56,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 57 conjunts are in the unsatisfiable core [2021-03-12 10:11:56,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-12 10:11:57,770 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 10:11:57,770 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 75 treesize of output 127 [2021-03-12 10:11:57,790 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-12 10:11:57,890 INFO L628 ElimStorePlain]: treesize reduction 137, result has 58.5 percent of original size [2021-03-12 10:11:57,918 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-03-12 10:11:57,918 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 7 variables, input treesize:86, output treesize:57 [2021-03-12 10:12:04,757 WARN L205 SmtUtils]: Spent 3.28 s on a formula simplification that was a NOOP. DAG size: 42 [2021-03-12 10:12:08,801 WARN L205 SmtUtils]: Spent 3.91 s on a formula simplification that was a NOOP. DAG size: 62 [2021-03-12 10:12:15,575 WARN L205 SmtUtils]: Spent 4.48 s on a formula simplification that was a NOOP. DAG size: 66 [2021-03-12 10:12:38,175 WARN L205 SmtUtils]: Spent 21.19 s on a formula simplification. DAG size of input: 67 DAG size of output: 66 [2021-03-12 10:12:50,127 WARN L205 SmtUtils]: Spent 10.47 s on a formula simplification that was a NOOP. DAG size: 88 [2021-03-12 10:13:02,043 WARN L205 SmtUtils]: Spent 8.05 s on a formula simplification that was a NOOP. DAG size: 88 [2021-03-12 10:13:42,630 WARN L205 SmtUtils]: Spent 36.23 s on a formula simplification. DAG size of input: 155 DAG size of output: 109 [2021-03-12 10:14:07,251 WARN L205 SmtUtils]: Spent 18.86 s on a formula simplification that was a NOOP. DAG size: 109 [2021-03-12 10:14:08,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:14:08,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:14:08,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:14:08,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:14:08,343 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-12 10:14:08,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:14:08,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:14:08,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:14:08,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:14:08,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:14:08,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:14:08,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:14:08,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:14:08,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:14:08,427 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-12 10:14:08,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:14:08,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:14:08,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:14:08,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:14:08,468 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-12 10:14:08,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:14:08,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:14:08,491 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-12 10:14:08,541 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-12 10:14:08,647 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-12 10:14:08,700 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-12 10:14:08,727 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-12 10:14:08,727 INFO L244 Elim1Store]: Index analysis took 421 ms [2021-03-12 10:14:08,731 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 10 disjoint index pairs (out of 36 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 22 [2021-03-12 10:14:08,742 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-12 10:14:08,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:14:08,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:14:08,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:14:08,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:14:08,801 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-12 10:14:08,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:14:08,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:14:08,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:14:08,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:14:08,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:14:08,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:14:08,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:14:08,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:14:08,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:14:08,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:14:08,895 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-12 10:14:08,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:14:08,911 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-12 10:14:08,963 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-12 10:14:09,079 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-12 10:14:09,095 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-12 10:14:09,096 INFO L244 Elim1Store]: Index analysis took 335 ms [2021-03-12 10:14:09,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 10 disjoint index pairs (out of 28 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 22 [2021-03-12 10:14:09,109 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-12 10:14:09,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:14:09,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:14:09,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:14:09,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:14:09,171 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-12 10:14:09,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:14:09,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:14:09,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:14:09,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:14:09,214 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-12 10:14:09,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:14:09,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:14:09,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:14:09,293 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-12 10:14:09,342 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-12 10:14:09,374 INFO L244 Elim1Store]: Index analysis took 243 ms [2021-03-12 10:14:09,378 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 10 disjoint index pairs (out of 21 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 19 [2021-03-12 10:14:09,389 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-12 10:14:09,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:14:09,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:14:09,426 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-12 10:14:09,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:14:09,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:14:09,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:14:09,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:14:09,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:14:09,473 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-12 10:14:09,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:14:09,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:14:09,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:14:09,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:14:09,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:14:09,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:14:09,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:14:09,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:14:09,548 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-12 10:14:09,548 INFO L244 Elim1Store]: Index analysis took 144 ms [2021-03-12 10:14:09,551 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 10 disjoint index pairs (out of 28 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 22 [2021-03-12 10:14:09,562 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-12 10:14:09,620 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 10:14:09,629 INFO L550 ElimStorePlain]: Start of recursive call 1: 9 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-03-12 10:14:09,630 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 10 variables, input treesize:305, output treesize:5 [2021-03-12 10:14:09,782 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 95 refuted. 5 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 10:14:09,783 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-12 10:14:09,783 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 32] total 64 [2021-03-12 10:14:09,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954329703] [2021-03-12 10:14:09,783 INFO L460 AbstractCegarLoop]: Interpolant automaton has 65 states [2021-03-12 10:14:09,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 10:14:09,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2021-03-12 10:14:09,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=333, Invalid=3822, Unknown=5, NotChecked=0, Total=4160 [2021-03-12 10:14:09,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-12 10:14:09,785 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-03-12 10:14:09,785 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 65 states, 65 states have (on average 1.676923076923077) internal successors, (109), 64 states have internal predecessors, (109), 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) [2021-03-12 10:14:09,785 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:14:09,785 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:14:09,785 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:14:09,785 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-03-12 10:14:09,785 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-03-12 10:14:09,785 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-03-12 10:14:09,785 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-03-12 10:14:09,785 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2021-03-12 10:14:09,786 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 27 states. [2021-03-12 10:14:09,786 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-03-12 10:14:09,786 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-03-12 10:14:15,631 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 20 [2021-03-12 10:14:16,770 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 21 [2021-03-12 10:14:17,919 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 25 [2021-03-12 10:14:18,954 WARN L205 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 35 [2021-03-12 10:14:19,862 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 34 [2021-03-12 10:14:21,265 WARN L205 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 38 [2021-03-12 10:14:22,532 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 39 [2021-03-12 10:14:23,571 WARN L205 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 35 [2021-03-12 10:14:24,565 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 34 [2021-03-12 10:14:25,902 WARN L205 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 41 [2021-03-12 10:14:27,187 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 39 [2021-03-12 10:14:28,054 WARN L205 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2021-03-12 10:14:28,900 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 41 [2021-03-12 10:14:30,044 WARN L205 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 45 [2021-03-12 10:14:31,417 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-03-12 10:14:33,158 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-03-12 10:14:39,272 WARN L205 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2021-03-12 10:14:41,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:14:41,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:14:41,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:14:41,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-12 10:14:41,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-12 10:14:41,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-03-12 10:14:41,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-12 10:14:41,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-03-12 10:14:41,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-03-12 10:14:41,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-12 10:14:41,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-03-12 10:14:41,432 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-12 10:14:41,432 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 10:14:41,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 10:14:41,433 INFO L82 PathProgramCache]: Analyzing trace with hash 904748543, now seen corresponding path program 6 times [2021-03-12 10:14:41,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 10:14:41,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552281950] [2021-03-12 10:14:41,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 10:14:41,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 10:14:41,786 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 11 [2021-03-12 10:14:41,974 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 12 [2021-03-12 10:14:42,176 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 10 [2021-03-12 10:14:42,391 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 16 [2021-03-12 10:14:42,664 WARN L205 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 19 [2021-03-12 10:14:42,851 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2021-03-12 10:14:44,118 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2021-03-12 10:14:44,348 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2021-03-12 10:14:44,588 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2021-03-12 10:14:44,848 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2021-03-12 10:14:45,136 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2021-03-12 10:14:45,406 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2021-03-12 10:14:45,690 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2021-03-12 10:14:45,995 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2021-03-12 10:14:46,374 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2021-03-12 10:14:46,699 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2021-03-12 10:14:47,128 WARN L205 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2021-03-12 10:14:47,491 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2021-03-12 10:14:47,813 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2021-03-12 10:14:48,147 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2021-03-12 10:14:53,817 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 10:14:53,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552281950] [2021-03-12 10:14:53,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117809994] [2021-03-12 10:14:53,818 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 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 [2021-03-12 10:14:53,852 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-03-12 10:14:53,853 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-12 10:14:53,854 WARN L261 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 72 conjunts are in the unsatisfiable core [2021-03-12 10:14:53,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-12 10:15:00,519 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2021-03-12 10:15:02,517 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2021-03-12 10:15:03,335 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2021-03-12 10:15:05,530 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-03-12 10:15:06,488 WARN L205 SmtUtils]: Spent 819.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2021-03-12 10:15:06,491 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 10:15:06,492 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 93 treesize of output 179 [2021-03-12 10:15:06,564 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-12 10:15:09,015 WARN L205 SmtUtils]: Spent 2.45 s on a formula simplification. DAG size of input: 121 DAG size of output: 95 [2021-03-12 10:15:09,018 INFO L628 ElimStorePlain]: treesize reduction 209, result has 58.5 percent of original size [2021-03-12 10:15:09,479 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-03-12 10:15:09,479 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 7 variables, input treesize:104, output treesize:90 [2021-03-12 10:15:10,348 WARN L205 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 32 [2021-03-12 10:15:11,116 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2021-03-12 10:15:11,917 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2021-03-12 10:15:12,647 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2021-03-12 10:15:13,384 WARN L205 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2021-03-12 10:15:14,525 WARN L205 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2021-03-12 10:15:15,297 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2021-03-12 10:15:16,069 WARN L205 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2021-03-12 10:15:17,149 WARN L205 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 35 [2021-03-12 10:15:17,821 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2021-03-12 10:15:18,516 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2021-03-12 10:15:19,565 WARN L205 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 35 [2021-03-12 10:15:20,286 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2021-03-12 10:15:21,137 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2021-03-12 10:15:22,422 WARN L205 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 36 [2021-03-12 10:15:23,317 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2021-03-12 10:15:23,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:15:23,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:15:23,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:15:23,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:15:23,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:15:23,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:15:23,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:15:23,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:15:23,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:15:23,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:15:23,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:15:23,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:15:23,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:15:23,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:15:23,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:15:23,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:15:23,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:15:23,728 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-12 10:15:23,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:15:23,736 INFO L244 Elim1Store]: Index analysis took 220 ms [2021-03-12 10:15:24,136 WARN L205 SmtUtils]: Spent 397.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-03-12 10:15:24,140 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 10:15:24,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 15 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 7 case distinctions, treesize of input 66 treesize of output 80 [2021-03-12 10:15:24,563 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-03-12 10:15:24,763 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2021-03-12 10:15:24,765 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 10:15:24,833 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-03-12 10:15:24,834 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:85, output treesize:17 [2021-03-12 10:15:26,054 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 10 [2021-03-12 10:15:26,222 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 10:15:26,222 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-12 10:15:26,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 39] total 79 [2021-03-12 10:15:26,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820948605] [2021-03-12 10:15:26,223 INFO L460 AbstractCegarLoop]: Interpolant automaton has 80 states [2021-03-12 10:15:26,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 10:15:26,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2021-03-12 10:15:26,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=661, Invalid=5659, Unknown=0, NotChecked=0, Total=6320 [2021-03-12 10:15:26,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-12 10:15:26,225 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-03-12 10:15:26,225 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 80 states, 80 states have (on average 1.6125) internal successors, (129), 79 states have internal predecessors, (129), 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) [2021-03-12 10:15:26,225 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:15:26,225 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:15:26,225 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:15:26,225 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-03-12 10:15:26,225 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-03-12 10:15:26,225 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-03-12 10:15:26,225 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-03-12 10:15:26,225 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2021-03-12 10:15:26,225 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 27 states. [2021-03-12 10:15:26,226 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-03-12 10:15:26,226 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 32 states. [2021-03-12 10:15:26,226 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-03-12 10:15:31,874 WARN L205 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 27 [2021-03-12 10:15:33,598 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2021-03-12 10:15:35,515 WARN L205 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 35 [2021-03-12 10:15:37,210 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2021-03-12 10:15:39,150 WARN L205 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2021-03-12 10:15:40,766 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-03-12 10:15:44,669 WARN L205 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 49 [2021-03-12 10:15:46,725 WARN L205 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-03-12 10:15:48,501 WARN L205 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 42 [2021-03-12 10:15:51,795 WARN L205 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2021-03-12 10:15:53,461 WARN L205 SmtUtils]: Spent 426.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 31 [2021-03-12 10:15:54,581 WARN L205 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 28 [2021-03-12 10:15:56,859 WARN L205 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 27 [2021-03-12 10:15:58,006 WARN L205 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 24 [2021-03-12 10:15:58,725 WARN L205 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 23 [2021-03-12 10:15:59,356 WARN L205 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 20 [2021-03-12 10:16:00,033 WARN L205 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 19 [2021-03-12 10:16:00,633 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 16 [2021-03-12 10:16:01,251 WARN L205 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 15 [2021-03-12 10:16:01,823 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 13 [2021-03-12 10:16:02,401 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 11 [2021-03-12 10:16:02,891 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 10 [2021-03-12 10:16:03,444 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 8 [2021-03-12 10:16:03,987 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 7 [2021-03-12 10:16:04,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:16:04,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:16:04,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:16:04,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-12 10:16:04,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-12 10:16:04,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-03-12 10:16:04,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-12 10:16:04,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-03-12 10:16:04,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-03-12 10:16:04,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-12 10:16:04,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-03-12 10:16:04,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-03-12 10:16:04,495 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-12 10:16:04,497 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 10:16:04,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 10:16:04,498 INFO L82 PathProgramCache]: Analyzing trace with hash 1764623020, now seen corresponding path program 7 times [2021-03-12 10:16:04,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 10:16:04,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068964065] [2021-03-12 10:16:04,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 10:16:04,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 10:16:05,890 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2021-03-12 10:16:06,118 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2021-03-12 10:16:06,411 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2021-03-12 10:16:06,710 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2021-03-12 10:16:06,971 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2021-03-12 10:16:07,237 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2021-03-12 10:16:07,538 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2021-03-12 10:16:07,886 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2021-03-12 10:16:08,198 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2021-03-12 10:16:08,532 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2021-03-12 10:16:08,884 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2021-03-12 10:16:09,262 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2021-03-12 10:16:09,650 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2021-03-12 10:16:10,049 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2021-03-12 10:16:10,485 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2021-03-12 10:16:10,949 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2021-03-12 10:16:11,402 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2021-03-12 10:16:11,848 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2021-03-12 10:16:12,340 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2021-03-12 10:16:12,801 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2021-03-12 10:16:13,305 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2021-03-12 10:16:13,789 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2021-03-12 10:16:14,299 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2021-03-12 10:16:14,795 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2021-03-12 10:16:15,261 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2021-03-12 10:16:16,234 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2021-03-12 10:16:16,870 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2021-03-12 10:16:17,481 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2021-03-12 10:16:18,057 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2021-03-12 10:16:23,560 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 10:16:23,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068964065] [2021-03-12 10:16:23,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136577617] [2021-03-12 10:16:23,560 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 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-12 10:16:23,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 10:16:23,599 WARN L261 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 83 conjunts are in the unsatisfiable core [2021-03-12 10:16:23,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-12 10:16:28,585 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2021-03-12 10:16:29,427 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2021-03-12 10:16:31,476 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2021-03-12 10:16:32,429 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2021-03-12 10:16:33,519 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2021-03-12 10:16:35,033 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2021-03-12 10:16:36,008 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2021-03-12 10:16:36,964 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-03-12 10:16:38,509 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-03-12 10:16:39,492 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2021-03-12 10:16:41,309 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-03-12 10:16:45,523 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2021-03-12 10:16:47,114 WARN L205 SmtUtils]: Spent 1.24 s on a formula simplification that was a NOOP. DAG size: 99 [2021-03-12 10:16:47,117 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 10:16:47,118 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 109 treesize of output 237 [2021-03-12 10:16:47,223 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-12 10:16:51,782 WARN L205 SmtUtils]: Spent 4.56 s on a formula simplification. DAG size of input: 155 DAG size of output: 129 [2021-03-12 10:16:51,786 INFO L628 ElimStorePlain]: treesize reduction 247, result has 63.8 percent of original size [2021-03-12 10:16:53,154 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-03-12 10:16:53,154 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 9 variables, input treesize:120, output treesize:128 [2021-03-12 10:16:54,586 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2021-03-12 10:16:55,423 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2021-03-12 10:16:56,211 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2021-03-12 10:16:57,036 WARN L205 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2021-03-12 10:16:58,141 WARN L205 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 31 [2021-03-12 10:16:59,032 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2021-03-12 10:16:59,915 WARN L205 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2021-03-12 10:17:01,132 WARN L205 SmtUtils]: Spent 434.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 31 [2021-03-12 10:17:02,146 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2021-03-12 10:17:03,156 WARN L205 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2021-03-12 10:17:04,482 WARN L205 SmtUtils]: Spent 471.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 31 [2021-03-12 10:17:05,504 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2021-03-12 10:17:06,463 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2021-03-12 10:17:07,655 WARN L205 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 31 [2021-03-12 10:17:08,639 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2021-03-12 10:17:09,650 WARN L205 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2021-03-12 10:17:10,873 WARN L205 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 31 [2021-03-12 10:17:11,848 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2021-03-12 10:17:11,989 INFO L354 Elim1Store]: treesize reduction 240, result has 0.4 percent of original size [2021-03-12 10:17:11,990 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 25 [2021-03-12 10:17:12,011 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-12 10:17:12,060 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 10:17:12,068 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-03-12 10:17:12,069 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:78, output treesize:5 [2021-03-12 10:17:12,322 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 10:17:12,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-12 10:17:12,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 44] total 88 [2021-03-12 10:17:12,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663687970] [2021-03-12 10:17:12,324 INFO L460 AbstractCegarLoop]: Interpolant automaton has 89 states [2021-03-12 10:17:12,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 10:17:12,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2021-03-12 10:17:12,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=697, Invalid=7135, Unknown=0, NotChecked=0, Total=7832 [2021-03-12 10:17:12,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-12 10:17:12,326 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-03-12 10:17:12,326 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 89 states, 89 states have (on average 1.5617977528089888) internal successors, (139), 88 states have internal predecessors, (139), 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) [2021-03-12 10:17:12,327 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:17:12,327 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:17:12,327 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:17:12,327 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-03-12 10:17:12,327 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-03-12 10:17:12,327 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-03-12 10:17:12,327 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-03-12 10:17:12,327 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2021-03-12 10:17:12,327 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 27 states. [2021-03-12 10:17:12,327 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-03-12 10:17:12,327 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 32 states. [2021-03-12 10:17:12,327 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 42 states. [2021-03-12 10:17:12,327 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-03-12 10:17:20,048 WARN L205 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 27 [2021-03-12 10:17:21,911 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2021-03-12 10:17:24,173 WARN L205 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 34 [2021-03-12 10:17:26,097 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2021-03-12 10:17:28,345 WARN L205 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2021-03-12 10:17:30,360 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-03-12 10:17:33,512 WARN L205 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 48 [2021-03-12 10:17:36,035 WARN L205 SmtUtils]: Spent 387.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-03-12 10:17:57,690 WARN L195 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2021-03-12 10:17:57,893 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141,12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-12 10:17:57,895 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:209) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:226) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:153) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:138) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkValidity(IncrementalHoareTripleChecker.java:676) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkInternal(IncrementalHoareTripleChecker.java:143) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ProtectiveHoareTripleChecker.checkInternal(ProtectiveHoareTripleChecker.java:61) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.EfficientHoareTripleChecker.checkInternal(EfficientHoareTripleChecker.java:63) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkInternal(CachingHoareTripleChecker.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$InternalSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:357) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.addOtherSuccessors(DeterministicInterpolantAutomaton.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:200) at de.uni_freiburg.informatik.ultimate.automata.partialorder.SleepSetDelayReduction.search(SleepSetDelayReduction.java:182) at de.uni_freiburg.informatik.ultimate.automata.partialorder.SleepSetDelayReduction.(SleepSetDelayReduction.java:105) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.concurrency.PartialOrderCegarLoop.isAbstractionEmpty(PartialOrderCegarLoop.java:195) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:507) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:69) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:63) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateAllErrorsAtOnce(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:171) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:131) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1461) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:654) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:206) ... 40 more [2021-03-12 10:17:57,908 INFO L168 Benchmark]: Toolchain (without parser) took 371115.44 ms. Allocated memory was 255.9 MB in the beginning and 396.4 MB in the end (delta: 140.5 MB). Free memory was 236.4 MB in the beginning and 313.8 MB in the end (delta: -77.4 MB). Peak memory consumption was 65.0 MB. Max. memory is 16.0 GB. [2021-03-12 10:17:57,909 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.10 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-12 10:17:57,909 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.01 ms. Allocated memory is still 255.9 MB. Free memory was 235.9 MB in the beginning and 234.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-12 10:17:57,909 INFO L168 Benchmark]: Boogie Preprocessor took 10.66 ms. Allocated memory is still 255.9 MB. Free memory was 234.5 MB in the beginning and 233.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-12 10:17:57,909 INFO L168 Benchmark]: RCFGBuilder took 271.08 ms. Allocated memory is still 255.9 MB. Free memory was 233.5 MB in the beginning and 236.9 MB in the end (delta: -3.5 MB). Peak memory consumption was 18.3 MB. Max. memory is 16.0 GB. [2021-03-12 10:17:57,909 INFO L168 Benchmark]: TraceAbstraction took 370790.69 ms. Allocated memory was 255.9 MB in the beginning and 396.4 MB in the end (delta: 140.5 MB). Free memory was 236.3 MB in the beginning and 313.8 MB in the end (delta: -77.5 MB). Peak memory consumption was 63.5 MB. Max. memory is 16.0 GB. [2021-03-12 10:17:57,913 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.10 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 17.01 ms. Allocated memory is still 255.9 MB. Free memory was 235.9 MB in the beginning and 234.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 10.66 ms. Allocated memory is still 255.9 MB. Free memory was 234.5 MB in the beginning and 233.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 271.08 ms. Allocated memory is still 255.9 MB. Free memory was 233.5 MB in the beginning and 236.9 MB in the end (delta: -3.5 MB). Peak memory consumption was 18.3 MB. Max. memory is 16.0 GB. * TraceAbstraction took 370790.69 ms. Allocated memory was 255.9 MB in the beginning and 396.4 MB in the end (delta: 140.5 MB). Free memory was 236.3 MB in the beginning and 313.8 MB in the end (delta: -77.5 MB). Peak memory consumption was 63.5 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:209) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...