/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-FA-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/exp-term-subst.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 15:35:55,083 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 15:35:55,085 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 15:35:55,112 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-11 15:35:55,127 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 15:35:55,128 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 15:35:55,129 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 15:35:55,132 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 15:35:55,134 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 15:35:55,134 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 15:35:55,136 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 15:35:55,141 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 15:35:55,142 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 15:35:55,142 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 15:35:55,143 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 15:35:55,144 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 15:35:55,149 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-11 15:35:55,154 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 15:35:55,155 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 15:35:55,155 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 15:35:55,158 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-FA-SemanticLbe.epf [2021-03-11 15:35:55,185 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 15:35:55,185 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 15:35:55,187 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 15:35:55,187 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 15:35:55,188 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 15:35:55,188 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 15:35:55,188 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 15:35:55,188 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 15:35:55,188 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 15:35:55,188 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 15:35:55,189 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 15:35:55,189 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 15:35:55,189 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 15:35:55,189 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 15:35:55,189 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 15:35:55,189 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 15:35:55,189 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 15:35:55,189 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 15:35:55,190 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 15:35:55,190 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 15:35:55,190 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 15:35:55,190 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 15:35:55,190 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 15:35:55,190 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 15:35:55,190 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 15:35:55,190 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 15:35:55,191 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 15:35:55,191 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-11 15:35:55,191 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 15:35:55,465 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 15:35:55,482 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 15:35:55,484 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 15:35:55,485 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-11 15:35:55,486 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-11 15:35:55,487 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/exp-term-subst.wvr.bpl [2021-03-11 15:35:55,487 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/exp-term-subst.wvr.bpl' [2021-03-11 15:35:55,518 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 15:35:55,522 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-11 15:35:55,523 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 15:35:55,523 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 15:35:55,523 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 15:35:55,532 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "exp-term-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 03:35:55" (1/1) ... [2021-03-11 15:35:55,537 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "exp-term-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 03:35:55" (1/1) ... [2021-03-11 15:35:55,545 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 15:35:55,546 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 15:35:55,546 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 15:35:55,546 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 15:35:55,552 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "exp-term-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 03:35:55" (1/1) ... [2021-03-11 15:35:55,552 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "exp-term-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 03:35:55" (1/1) ... [2021-03-11 15:35:55,553 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "exp-term-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 03:35:55" (1/1) ... [2021-03-11 15:35:55,554 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "exp-term-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 03:35:55" (1/1) ... [2021-03-11 15:35:55,557 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "exp-term-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 03:35:55" (1/1) ... [2021-03-11 15:35:55,559 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "exp-term-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 03:35:55" (1/1) ... [2021-03-11 15:35:55,560 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "exp-term-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 03:35:55" (1/1) ... [2021-03-11 15:35:55,564 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 15:35:55,565 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 15:35:55,565 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 15:35:55,565 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 15:35:55,566 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "exp-term-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 03:35:55" (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 [2021-03-11 15:35:55,628 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-03-11 15:35:55,628 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-11 15:35:55,628 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-11 15:35:55,628 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-03-11 15:35:55,628 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-11 15:35:55,628 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-11 15:35:55,629 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-11 15:35:55,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 15:35:55,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 15:35:55,629 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-03-11 15:35:55,629 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-03-11 15:35:55,629 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-03-11 15:35:55,630 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 15:35:55,783 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 15:35:55,783 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-11 15:35:55,784 INFO L202 PluginConnector]: Adding new model exp-term-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 03:35:55 BoogieIcfgContainer [2021-03-11 15:35:55,784 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 15:35:55,797 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 15:35:55,797 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 15:35:55,799 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 15:35:55,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "exp-term-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 03:35:55" (1/2) ... [2021-03-11 15:35:55,801 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2596ecdf and model type exp-term-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 03:35:55, skipping insertion in model container [2021-03-11 15:35:55,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "exp-term-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 03:35:55" (2/2) ... [2021-03-11 15:35:55,806 INFO L111 eAbstractionObserver]: Analyzing ICFG exp-term-subst.wvr.bpl [2021-03-11 15:35:55,810 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-11 15:35:55,810 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 15:35:55,814 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 15:35:55,815 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 15:35:55,883 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-03-11 15:35:55,895 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-11 15:35:55,908 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 15:35:55,908 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-11 15:35:55,909 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 15:35:55,909 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 15:35:55,909 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 15:35:55,909 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 15:35:55,909 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 15:35:55,909 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 15:35:55,917 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-11 15:35:55,924 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 29 places, 19 transitions, 62 flow [2021-03-11 15:35:55,927 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 29 places, 19 transitions, 62 flow [2021-03-11 15:35:55,928 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 29 places, 19 transitions, 62 flow [2021-03-11 15:35:55,958 INFO L129 PetriNetUnfolder]: 0/16 cut-off events. [2021-03-11 15:35:55,958 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-11 15:35:55,960 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 16 events. 0/16 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 14 event pairs, 0 based on Foata normal form. 0/15 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-11 15:35:55,961 INFO L116 LiptonReduction]: Number of co-enabled transitions 48 [2021-03-11 15:35:56,170 INFO L131 LiptonReduction]: Checked pairs total: 54 [2021-03-11 15:35:56,170 INFO L133 LiptonReduction]: Total number of compositions: 6 [2021-03-11 15:35:56,179 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 24 places, 14 transitions, 52 flow [2021-03-11 15:35:56,187 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 24 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 15:35:56,188 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 15:35:56,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-03-11 15:35:56,194 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 15:35:56,195 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 15:35:56,195 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 15:35:56,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 15:35:56,198 INFO L82 PathProgramCache]: Analyzing trace with hash 123012460, now seen corresponding path program 1 times [2021-03-11 15:35:56,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 15:35:56,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316271996] [2021-03-11 15:35:56,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 15:35:56,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 15:35:56,393 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 15:35:56,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 15:35:56,415 INFO L142 QuantifierPusher]: treesize reduction 72, result has 34.5 percent of original size [2021-03-11 15:35:56,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-03-11 15:35:56,500 INFO L142 QuantifierPusher]: treesize reduction 86, result has 52.7 percent of original size [2021-03-11 15:35:56,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 96 [2021-03-11 15:35:56,605 INFO L142 QuantifierPusher]: treesize reduction 83, result has 46.5 percent of original size [2021-03-11 15:35:56,609 INFO L147 QuantifierPusher]: treesize reduction 3, result has 95.8 percent of original size 69 [2021-03-11 15:35:56,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 15:35:56,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316271996] [2021-03-11 15:35:56,672 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 15:35:56,672 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 15:35:56,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452555286] [2021-03-11 15:35:56,676 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 15:35:56,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 15:35:56,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 15:35:56,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-11 15:35:56,692 INFO L87 Difference]: Start difference. First operand has 24 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 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) [2021-03-11 15:35:56,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 15:35:56,841 INFO L93 Difference]: Finished difference Result 34 states and 47 transitions. [2021-03-11 15:35:56,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 15:35:56,843 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 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) Word has length 10 [2021-03-11 15:35:56,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 15:35:56,848 INFO L225 Difference]: With dead ends: 34 [2021-03-11 15:35:56,848 INFO L226 Difference]: Without dead ends: 28 [2021-03-11 15:35:56,849 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 318.4ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 15:35:56,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-03-11 15:35:56,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 23. [2021-03-11 15:35:56,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 15:35:56,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 35 transitions. [2021-03-11 15:35:56,914 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 35 transitions. Word has length 10 [2021-03-11 15:35:56,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 15:35:56,914 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 35 transitions. [2021-03-11 15:35:56,914 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 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) [2021-03-11 15:35:56,914 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 35 transitions. [2021-03-11 15:35:56,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-03-11 15:35:56,915 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 15:35:56,915 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 15:35:56,915 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 15:35:56,916 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 15:35:56,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 15:35:56,917 INFO L82 PathProgramCache]: Analyzing trace with hash 11296210, now seen corresponding path program 2 times [2021-03-11 15:35:56,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 15:35:56,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650083719] [2021-03-11 15:35:56,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 15:35:56,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 15:35:56,985 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 15:35:56,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 15:35:56,991 INFO L142 QuantifierPusher]: treesize reduction 67, result has 33.0 percent of original size [2021-03-11 15:35:56,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 15:35:57,033 INFO L142 QuantifierPusher]: treesize reduction 66, result has 62.9 percent of original size [2021-03-11 15:35:57,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 112 [2021-03-11 15:35:57,141 INFO L142 QuantifierPusher]: treesize reduction 112, result has 34.5 percent of original size [2021-03-11 15:35:57,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-03-11 15:35:57,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 15:35:57,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650083719] [2021-03-11 15:35:57,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 15:35:57,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 15:35:57,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746446148] [2021-03-11 15:35:57,178 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 15:35:57,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 15:35:57,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 15:35:57,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-11 15:35:57,180 INFO L87 Difference]: Start difference. First operand 23 states and 35 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 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) [2021-03-11 15:35:57,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 15:35:57,353 INFO L93 Difference]: Finished difference Result 36 states and 48 transitions. [2021-03-11 15:35:57,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 15:35:57,354 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 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) Word has length 10 [2021-03-11 15:35:57,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 15:35:57,354 INFO L225 Difference]: With dead ends: 36 [2021-03-11 15:35:57,354 INFO L226 Difference]: Without dead ends: 24 [2021-03-11 15:35:57,355 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 298.5ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 15:35:57,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-03-11 15:35:57,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 19. [2021-03-11 15:35:57,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 18 states have internal predecessors, (26), 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) [2021-03-11 15:35:57,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 26 transitions. [2021-03-11 15:35:57,359 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 26 transitions. Word has length 10 [2021-03-11 15:35:57,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 15:35:57,359 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 26 transitions. [2021-03-11 15:35:57,359 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 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) [2021-03-11 15:35:57,359 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 26 transitions. [2021-03-11 15:35:57,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-03-11 15:35:57,359 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 15:35:57,360 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 15:35:57,360 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 15:35:57,360 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 15:35:57,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 15:35:57,361 INFO L82 PathProgramCache]: Analyzing trace with hash 1059579910, now seen corresponding path program 3 times [2021-03-11 15:35:57,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 15:35:57,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982641624] [2021-03-11 15:35:57,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 15:35:57,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 15:35:57,471 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 15:35:57,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 15:35:57,477 INFO L142 QuantifierPusher]: treesize reduction 257, result has 18.7 percent of original size [2021-03-11 15:35:57,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-03-11 15:35:57,544 INFO L142 QuantifierPusher]: treesize reduction 288, result has 25.8 percent of original size [2021-03-11 15:35:57,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-03-11 15:35:57,625 INFO L142 QuantifierPusher]: treesize reduction 407, result has 36.7 percent of original size [2021-03-11 15:35:57,627 INFO L147 QuantifierPusher]: treesize reduction 83, result has 64.8 percent of original size 153 [2021-03-11 15:35:57,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 15:35:57,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982641624] [2021-03-11 15:35:57,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 15:35:57,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 15:35:57,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833508821] [2021-03-11 15:35:57,679 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 15:35:57,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 15:35:57,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 15:35:57,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-11 15:35:57,681 INFO L87 Difference]: Start difference. First operand 19 states and 26 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 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) [2021-03-11 15:35:57,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 15:35:57,798 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions. [2021-03-11 15:35:57,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 15:35:57,798 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 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) Word has length 10 [2021-03-11 15:35:57,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 15:35:57,799 INFO L225 Difference]: With dead ends: 28 [2021-03-11 15:35:57,799 INFO L226 Difference]: Without dead ends: 22 [2021-03-11 15:35:57,799 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 253.9ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 15:35:57,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-03-11 15:35:57,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 17. [2021-03-11 15:35:57,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 15:35:57,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 22 transitions. [2021-03-11 15:35:57,805 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 22 transitions. Word has length 10 [2021-03-11 15:35:57,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 15:35:57,805 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 22 transitions. [2021-03-11 15:35:57,805 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 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) [2021-03-11 15:35:57,805 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 22 transitions. [2021-03-11 15:35:57,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-03-11 15:35:57,806 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 15:35:57,806 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 15:35:57,807 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 15:35:57,807 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 15:35:57,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 15:35:57,807 INFO L82 PathProgramCache]: Analyzing trace with hash 1006849840, now seen corresponding path program 4 times [2021-03-11 15:35:57,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 15:35:57,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555688486] [2021-03-11 15:35:57,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 15:35:57,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 15:35:57,853 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 15:35:57,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 15:35:57,855 INFO L142 QuantifierPusher]: treesize reduction 83, result has 48.1 percent of original size [2021-03-11 15:35:57,856 INFO L147 QuantifierPusher]: treesize reduction 9, result has 88.3 percent of original size 68 [2021-03-11 15:35:57,937 INFO L142 QuantifierPusher]: treesize reduction 88, result has 52.7 percent of original size [2021-03-11 15:35:57,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 98 [2021-03-11 15:35:57,994 INFO L142 QuantifierPusher]: treesize reduction 88, result has 49.7 percent of original size [2021-03-11 15:35:57,996 INFO L147 QuantifierPusher]: treesize reduction 3, result has 96.6 percent of original size 84 [2021-03-11 15:35:58,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 15:35:58,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555688486] [2021-03-11 15:35:58,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 15:35:58,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 15:35:58,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854244428] [2021-03-11 15:35:58,041 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 15:35:58,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 15:35:58,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 15:35:58,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-11 15:35:58,042 INFO L87 Difference]: Start difference. First operand 17 states and 22 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 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) [2021-03-11 15:35:58,159 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2021-03-11 15:35:58,295 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2021-03-11 15:35:58,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 15:35:58,304 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2021-03-11 15:35:58,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 15:35:58,304 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 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) Word has length 10 [2021-03-11 15:35:58,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 15:35:58,305 INFO L225 Difference]: With dead ends: 22 [2021-03-11 15:35:58,305 INFO L226 Difference]: Without dead ends: 16 [2021-03-11 15:35:58,305 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 409.3ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 15:35:58,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-03-11 15:35:58,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-03-11 15:35:58,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 15:35:58,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2021-03-11 15:35:58,307 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 10 [2021-03-11 15:35:58,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 15:35:58,307 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2021-03-11 15:35:58,307 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 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) [2021-03-11 15:35:58,307 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2021-03-11 15:35:58,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-03-11 15:35:58,307 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 15:35:58,307 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 15:35:58,307 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 15:35:58,308 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 15:35:58,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 15:35:58,308 INFO L82 PathProgramCache]: Analyzing trace with hash 147975310, now seen corresponding path program 5 times [2021-03-11 15:35:58,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 15:35:58,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935778523] [2021-03-11 15:35:58,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 15:35:58,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 15:35:58,340 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 15:35:58,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 15:35:58,342 INFO L142 QuantifierPusher]: treesize reduction 163, result has 22.7 percent of original size [2021-03-11 15:35:58,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-03-11 15:35:58,378 INFO L142 QuantifierPusher]: treesize reduction 267, result has 34.6 percent of original size [2021-03-11 15:35:58,385 INFO L147 QuantifierPusher]: treesize reduction 4, result has 97.2 percent of original size 137 [2021-03-11 15:35:58,487 INFO L142 QuantifierPusher]: treesize reduction 178, result has 38.6 percent of original size [2021-03-11 15:35:58,489 INFO L147 QuantifierPusher]: treesize reduction 12, result has 89.3 percent of original size 100 [2021-03-11 15:35:58,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 15:35:58,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935778523] [2021-03-11 15:35:58,561 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 15:35:58,561 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 15:35:58,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464748172] [2021-03-11 15:35:58,561 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 15:35:58,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 15:35:58,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 15:35:58,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-11 15:35:58,562 INFO L87 Difference]: Start difference. First operand 16 states and 20 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 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) [2021-03-11 15:35:58,793 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2021-03-11 15:35:58,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 15:35:58,807 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2021-03-11 15:35:58,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 15:35:58,807 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 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) Word has length 10 [2021-03-11 15:35:58,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 15:35:58,808 INFO L225 Difference]: With dead ends: 20 [2021-03-11 15:35:58,808 INFO L226 Difference]: Without dead ends: 15 [2021-03-11 15:35:58,808 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 416.8ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 15:35:58,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-03-11 15:35:58,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-03-11 15:35:58,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 15:35:58,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2021-03-11 15:35:58,811 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 10 [2021-03-11 15:35:58,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 15:35:58,811 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 18 transitions. [2021-03-11 15:35:58,811 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 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) [2021-03-11 15:35:58,811 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2021-03-11 15:35:58,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-03-11 15:35:58,820 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 15:35:58,820 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 15:35:58,820 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 15:35:58,820 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 15:35:58,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 15:35:58,821 INFO L82 PathProgramCache]: Analyzing trace with hash 175680940, now seen corresponding path program 6 times [2021-03-11 15:35:58,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 15:35:58,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875550186] [2021-03-11 15:35:58,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 15:35:58,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 15:35:58,877 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 15:35:58,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 15:35:58,879 INFO L142 QuantifierPusher]: treesize reduction 68, result has 49.3 percent of original size [2021-03-11 15:35:58,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-03-11 15:35:58,917 INFO L142 QuantifierPusher]: treesize reduction 39, result has 67.8 percent of original size [2021-03-11 15:35:58,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-03-11 15:35:59,031 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2021-03-11 15:35:59,034 INFO L142 QuantifierPusher]: treesize reduction 59, result has 50.8 percent of original size [2021-03-11 15:35:59,036 INFO L147 QuantifierPusher]: treesize reduction 18, result has 70.5 percent of original size 43 [2021-03-11 15:35:59,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 15:35:59,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875550186] [2021-03-11 15:35:59,064 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 15:35:59,064 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 15:35:59,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915946383] [2021-03-11 15:35:59,065 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 15:35:59,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 15:35:59,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 15:35:59,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-11 15:35:59,066 INFO L87 Difference]: Start difference. First operand 15 states and 18 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 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) [2021-03-11 15:35:59,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 15:35:59,174 INFO L93 Difference]: Finished difference Result 14 states and 17 transitions. [2021-03-11 15:35:59,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 15:35:59,174 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 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) Word has length 10 [2021-03-11 15:35:59,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 15:35:59,174 INFO L225 Difference]: With dead ends: 14 [2021-03-11 15:35:59,174 INFO L226 Difference]: Without dead ends: 0 [2021-03-11 15:35:59,175 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 270.7ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 15:35:59,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-03-11 15:35:59,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-03-11 15:35:59,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-03-11 15:35:59,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-03-11 15:35:59,175 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2021-03-11 15:35:59,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 15:35:59,175 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-03-11 15:35:59,175 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 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) [2021-03-11 15:35:59,175 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-03-11 15:35:59,175 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-03-11 15:35:59,176 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-11 15:35:59,178 INFO L202 PluginConnector]: Adding new model exp-term-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 03:35:59 BasicIcfg [2021-03-11 15:35:59,178 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 15:35:59,179 INFO L168 Benchmark]: Toolchain (without parser) took 3660.00 ms. Allocated memory was 255.9 MB in the beginning and 362.8 MB in the end (delta: 107.0 MB). Free memory was 236.3 MB in the beginning and 208.5 MB in the end (delta: 27.8 MB). Peak memory consumption was 136.5 MB. Max. memory is 16.0 GB. [2021-03-11 15:35:59,180 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.13 ms. Allocated memory is still 255.9 MB. Free memory was 237.4 MB in the beginning and 237.3 MB in the end (delta: 178.2 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 15:35:59,180 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.27 ms. Allocated memory is still 255.9 MB. Free memory was 235.8 MB in the beginning and 234.3 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 15:35:59,180 INFO L168 Benchmark]: Boogie Preprocessor took 18.38 ms. Allocated memory is still 255.9 MB. Free memory was 234.3 MB in the beginning and 233.3 MB in the end (delta: 996.4 kB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. [2021-03-11 15:35:59,181 INFO L168 Benchmark]: RCFGBuilder took 219.32 ms. Allocated memory is still 255.9 MB. Free memory was 233.1 MB in the beginning and 223.5 MB in the end (delta: 9.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. [2021-03-11 15:35:59,181 INFO L168 Benchmark]: TraceAbstraction took 3381.68 ms. Allocated memory was 255.9 MB in the beginning and 362.8 MB in the end (delta: 107.0 MB). Free memory was 241.2 MB in the beginning and 208.5 MB in the end (delta: 32.7 MB). Peak memory consumption was 139.3 MB. Max. memory is 16.0 GB. [2021-03-11 15:35:59,182 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 0.13 ms. Allocated memory is still 255.9 MB. Free memory was 237.4 MB in the beginning and 237.3 MB in the end (delta: 178.2 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 22.27 ms. Allocated memory is still 255.9 MB. Free memory was 235.8 MB in the beginning and 234.3 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 18.38 ms. Allocated memory is still 255.9 MB. Free memory was 234.3 MB in the beginning and 233.3 MB in the end (delta: 996.4 kB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. * RCFGBuilder took 219.32 ms. Allocated memory is still 255.9 MB. Free memory was 233.1 MB in the beginning and 223.5 MB in the end (delta: 9.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3381.68 ms. Allocated memory was 255.9 MB in the beginning and 362.8 MB in the end (delta: 107.0 MB). Free memory was 241.2 MB in the beginning and 208.5 MB in the end (delta: 32.7 MB). Peak memory consumption was 139.3 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 243.3ms, 29 PlacesBefore, 24 PlacesAfterwards, 19 TransitionsBefore, 14 TransitionsAfterwards, 48 CoEnabledTransitionPairs, 2 FixpointIterations, 3 TrivialSequentialCompositions, 3 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 6 TotalNumberOfCompositions, 54 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 54, positive: 54, positive conditional: 0, positive unconditional: 54, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 34, positive: 34, positive conditional: 0, positive unconditional: 34, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 34, positive: 34, positive conditional: 0, positive unconditional: 34, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 54, positive: 20, positive conditional: 0, positive unconditional: 20, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 34, unknown conditional: 0, unknown unconditional: 34] , Statistics on independence cache: Total cache size (in pairs): 12, Positive cache size: 12, Positive conditional cache size: 0, Positive unconditional cache size: 12, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - PositiveResult [Line: 47]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3269.3ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 18.2ms, AutomataDifference: 1086.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 277.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 72 SDtfs, 94 SDslu, 115 SDs, 0 SdLazy, 81 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 86.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1967.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, InterpolantAutomatonStates: 30, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 30.2ms AutomataMinimizationTime, 6 MinimizatonAttempts, 15 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 10.0ms SsaConstructionTime, 96.3ms SatisfiabilityAnalysisTime, 1609.3ms InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 1373 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...