/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/time-subst.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 15:54:45,178 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 15:54:45,180 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 15:54:45,209 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 15:54:45,210 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 15:54:45,212 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 15:54:45,213 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 15:54:45,217 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 15:54:45,219 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 15:54:45,222 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 15:54:45,223 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 15:54:45,224 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 15:54:45,224 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 15:54:45,225 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 15:54:45,226 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 15:54:45,227 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 15:54:45,229 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 15:54:45,229 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 15:54:45,231 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 15:54:45,237 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 15:54:45,238 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 15:54:45,239 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 15:54:45,240 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 15:54:45,241 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 15:54:45,245 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-11 15:54:45,251 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 15:54:45,251 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 15:54:45,252 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 15:54:45,255 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 15:54:45,281 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 15:54:45,281 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 15:54:45,284 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 15:54:45,284 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 15:54:45,284 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 15:54:45,284 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 15:54:45,284 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 15:54:45,284 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 15:54:45,284 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 15:54:45,285 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 15:54:45,285 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 15:54:45,285 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 15:54:45,286 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 15:54:45,286 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 15:54:45,286 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 15:54:45,286 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 15:54:45,286 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 15:54:45,286 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 15:54:45,286 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 15:54:45,286 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 15:54:45,287 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 15:54:45,287 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 15:54:45,287 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 15:54:45,287 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 15:54:45,287 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 15:54:45,287 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 15:54:45,287 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 15:54:45,288 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-11 15:54:45,288 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 15:54:45,521 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 15:54:45,538 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 15:54:45,540 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 15:54:45,541 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-11 15:54:45,542 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-11 15:54:45,542 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/time-subst.wvr.bpl [2021-03-11 15:54:45,554 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/time-subst.wvr.bpl' [2021-03-11 15:54:45,591 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 15:54:45,595 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-11 15:54:45,596 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 15:54:45,596 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 15:54:45,596 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 15:54:45,604 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "time-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 03:54:45" (1/1) ... [2021-03-11 15:54:45,611 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "time-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 03:54:45" (1/1) ... [2021-03-11 15:54:45,617 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 15:54:45,618 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 15:54:45,618 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 15:54:45,618 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 15:54:45,626 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "time-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 03:54:45" (1/1) ... [2021-03-11 15:54:45,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "time-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 03:54:45" (1/1) ... [2021-03-11 15:54:45,627 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "time-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 03:54:45" (1/1) ... [2021-03-11 15:54:45,627 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "time-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 03:54:45" (1/1) ... [2021-03-11 15:54:45,630 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "time-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 03:54:45" (1/1) ... [2021-03-11 15:54:45,631 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "time-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 03:54:45" (1/1) ... [2021-03-11 15:54:45,631 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "time-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 03:54:45" (1/1) ... [2021-03-11 15:54:45,632 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 15:54:45,633 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 15:54:45,633 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 15:54:45,633 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 15:54:45,634 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "time-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 03:54:45" (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 15:54:45,675 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-03-11 15:54:45,675 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-11 15:54:45,675 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-11 15:54:45,675 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-03-11 15:54:45,675 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-11 15:54:45,675 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-11 15:54:45,675 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-11 15:54:45,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 15:54:45,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 15:54:45,676 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-03-11 15:54:45,676 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-03-11 15:54:45,676 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-03-11 15:54:45,676 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 15:54:45,824 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 15:54:45,825 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-11 15:54:45,826 INFO L202 PluginConnector]: Adding new model time-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 03:54:45 BoogieIcfgContainer [2021-03-11 15:54:45,826 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 15:54:45,827 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 15:54:45,827 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 15:54:45,829 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 15:54:45,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "time-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 03:54:45" (1/2) ... [2021-03-11 15:54:45,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@360f32c7 and model type time-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 03:54:45, skipping insertion in model container [2021-03-11 15:54:45,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "time-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 03:54:45" (2/2) ... [2021-03-11 15:54:45,830 INFO L111 eAbstractionObserver]: Analyzing ICFG time-subst.wvr.bpl [2021-03-11 15:54:45,833 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-11 15:54:45,833 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 15:54:45,835 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 15:54:45,836 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 15:54:45,856 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-03-11 15:54:45,866 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-11 15:54:45,877 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 15:54:45,877 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-11 15:54:45,877 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 15:54:45,877 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 15:54:45,877 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 15:54:45,877 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 15:54:45,877 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 15:54:45,877 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 15:54:45,884 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-11 15:54:45,890 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 29 places, 19 transitions, 62 flow [2021-03-11 15:54:45,891 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 29 places, 19 transitions, 62 flow [2021-03-11 15:54:45,892 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 29 places, 19 transitions, 62 flow [2021-03-11 15:54:45,921 INFO L129 PetriNetUnfolder]: 0/16 cut-off events. [2021-03-11 15:54:45,922 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-11 15:54:45,927 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 15 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 15:54:45,929 INFO L116 LiptonReduction]: Number of co-enabled transitions 48 [2021-03-11 15:54:46,078 INFO L131 LiptonReduction]: Checked pairs total: 42 [2021-03-11 15:54:46,079 INFO L133 LiptonReduction]: Total number of compositions: 6 [2021-03-11 15:54:46,084 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 24 places, 14 transitions, 52 flow [2021-03-11 15:54:46,089 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 15:54:46,090 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 15:54:46,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-03-11 15:54:46,099 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 15:54:46,100 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 15:54:46,100 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 15:54:46,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 15:54:46,106 INFO L82 PathProgramCache]: Analyzing trace with hash -1025465478, now seen corresponding path program 1 times [2021-03-11 15:54:46,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 15:54:46,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344640025] [2021-03-11 15:54:46,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 15:54:46,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 15:54:46,238 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 15:54:46,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 15:54:46,244 INFO L142 QuantifierPusher]: treesize reduction 23, result has 58.9 percent of original size [2021-03-11 15:54:46,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 15:54:46,265 INFO L142 QuantifierPusher]: treesize reduction 5, result has 90.2 percent of original size [2021-03-11 15:54:46,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-03-11 15:54:46,304 INFO L142 QuantifierPusher]: treesize reduction 3, result has 95.6 percent of original size [2021-03-11 15:54:46,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-03-11 15:54:46,357 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 15:54:46,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344640025] [2021-03-11 15:54:46,358 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 15:54:46,358 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 15:54:46,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055904777] [2021-03-11 15:54:46,361 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 15:54:46,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 15:54:46,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 15:54:46,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-11 15:54:46,376 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 15:54:46,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 15:54:46,518 INFO L93 Difference]: Finished difference Result 36 states and 50 transitions. [2021-03-11 15:54:46,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 15:54:46,519 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 15:54:46,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 15:54:46,525 INFO L225 Difference]: With dead ends: 36 [2021-03-11 15:54:46,525 INFO L226 Difference]: Without dead ends: 28 [2021-03-11 15:54:46,526 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 202.9ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 15:54:46,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-03-11 15:54:46,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 23. [2021-03-11 15:54:46,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 22 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 15:54:46,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 34 transitions. [2021-03-11 15:54:46,549 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 34 transitions. Word has length 10 [2021-03-11 15:54:46,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 15:54:46,549 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 34 transitions. [2021-03-11 15:54:46,549 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 15:54:46,549 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 34 transitions. [2021-03-11 15:54:46,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-03-11 15:54:46,550 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 15:54:46,550 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 15:54:46,550 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 15:54:46,550 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 15:54:46,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 15:54:46,551 INFO L82 PathProgramCache]: Analyzing trace with hash -1024398768, now seen corresponding path program 2 times [2021-03-11 15:54:46,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 15:54:46,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542893492] [2021-03-11 15:54:46,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 15:54:46,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 15:54:46,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 15:54:46,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 15:54:46,651 INFO L142 QuantifierPusher]: treesize reduction 23, result has 58.9 percent of original size [2021-03-11 15:54:46,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 15:54:46,668 INFO L142 QuantifierPusher]: treesize reduction 8, result has 85.7 percent of original size [2021-03-11 15:54:46,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-03-11 15:54:46,686 INFO L142 QuantifierPusher]: treesize reduction 13, result has 80.6 percent of original size [2021-03-11 15:54:46,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-03-11 15:54:46,716 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 15:54:46,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542893492] [2021-03-11 15:54:46,717 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 15:54:46,717 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 15:54:46,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131056692] [2021-03-11 15:54:46,718 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 15:54:46,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 15:54:46,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 15:54:46,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-11 15:54:46,719 INFO L87 Difference]: Start difference. First operand 23 states and 34 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 15:54:46,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 15:54:46,820 INFO L93 Difference]: Finished difference Result 34 states and 44 transitions. [2021-03-11 15:54:46,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 15:54:46,821 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 15:54:46,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 15:54:46,824 INFO L225 Difference]: With dead ends: 34 [2021-03-11 15:54:46,824 INFO L226 Difference]: Without dead ends: 24 [2021-03-11 15:54:46,824 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 141.4ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 15:54:46,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-03-11 15:54:46,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 19. [2021-03-11 15:54:46,828 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 15:54:46,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 26 transitions. [2021-03-11 15:54:46,829 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 26 transitions. Word has length 10 [2021-03-11 15:54:46,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 15:54:46,830 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 26 transitions. [2021-03-11 15:54:46,830 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 15:54:46,830 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 26 transitions. [2021-03-11 15:54:46,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-03-11 15:54:46,830 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 15:54:46,830 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 15:54:46,831 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 15:54:46,831 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 15:54:46,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 15:54:46,831 INFO L82 PathProgramCache]: Analyzing trace with hash -1877082416, now seen corresponding path program 3 times [2021-03-11 15:54:46,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 15:54:46,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764127443] [2021-03-11 15:54:46,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 15:54:46,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 15:54:46,874 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 15:54:46,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 15:54:46,879 INFO L142 QuantifierPusher]: treesize reduction 274, result has 10.7 percent of original size [2021-03-11 15:54:46,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 15:54:46,899 INFO L142 QuantifierPusher]: treesize reduction 235, result has 30.3 percent of original size [2021-03-11 15:54:46,901 INFO L147 QuantifierPusher]: treesize reduction 14, result has 86.3 percent of original size 88 [2021-03-11 15:54:46,960 INFO L142 QuantifierPusher]: treesize reduction 80, result has 49.0 percent of original size [2021-03-11 15:54:46,962 INFO L147 QuantifierPusher]: treesize reduction 20, result has 74.0 percent of original size 57 [2021-03-11 15:54:47,012 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 15:54:47,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764127443] [2021-03-11 15:54:47,012 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 15:54:47,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 15:54:47,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517368612] [2021-03-11 15:54:47,013 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 15:54:47,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 15:54:47,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 15:54:47,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-11 15:54:47,014 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 15:54:47,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 15:54:47,134 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions. [2021-03-11 15:54:47,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 15:54:47,134 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 15:54:47,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 15:54:47,135 INFO L225 Difference]: With dead ends: 28 [2021-03-11 15:54:47,135 INFO L226 Difference]: Without dead ends: 20 [2021-03-11 15:54:47,135 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 214.7ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 15:54:47,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-03-11 15:54:47,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 15. [2021-03-11 15:54:47,137 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 15:54:47,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2021-03-11 15:54:47,137 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 10 [2021-03-11 15:54:47,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 15:54:47,137 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 18 transitions. [2021-03-11 15:54:47,138 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 15:54:47,138 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2021-03-11 15:54:47,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-03-11 15:54:47,138 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 15:54:47,139 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 15:54:47,139 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 15:54:47,140 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 15:54:47,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 15:54:47,140 INFO L82 PathProgramCache]: Analyzing trace with hash -1759830806, now seen corresponding path program 4 times [2021-03-11 15:54:47,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 15:54:47,141 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915392225] [2021-03-11 15:54:47,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 15:54:47,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 15:54:47,164 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 15:54:47,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 15:54:47,166 INFO L142 QuantifierPusher]: treesize reduction 75, result has 46.4 percent of original size [2021-03-11 15:54:47,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-03-11 15:54:47,207 INFO L142 QuantifierPusher]: treesize reduction 42, result has 71.0 percent of original size [2021-03-11 15:54:47,210 INFO L147 QuantifierPusher]: treesize reduction 6, result has 94.2 percent of original size 97 [2021-03-11 15:54:47,260 INFO L142 QuantifierPusher]: treesize reduction 6, result has 91.0 percent of original size [2021-03-11 15:54:47,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-11 15:54:47,293 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 15:54:47,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915392225] [2021-03-11 15:54:47,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 15:54:47,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 15:54:47,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044873245] [2021-03-11 15:54:47,295 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 15:54:47,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 15:54:47,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 15:54:47,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-11 15:54:47,295 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 15:54:47,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 15:54:47,399 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2021-03-11 15:54:47,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 15:54:47,400 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 15:54:47,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 15:54:47,401 INFO L225 Difference]: With dead ends: 20 [2021-03-11 15:54:47,401 INFO L226 Difference]: Without dead ends: 13 [2021-03-11 15:54:47,402 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 187.8ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 15:54:47,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-03-11 15:54:47,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-03-11 15:54:47,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 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 15:54:47,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2021-03-11 15:54:47,405 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 10 [2021-03-11 15:54:47,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 15:54:47,405 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2021-03-11 15:54:47,405 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 15:54:47,405 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2021-03-11 15:54:47,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-03-11 15:54:47,405 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 15:54:47,405 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 15:54:47,405 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 15:54:47,406 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 15:54:47,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 15:54:47,406 INFO L82 PathProgramCache]: Analyzing trace with hash -989435546, now seen corresponding path program 5 times [2021-03-11 15:54:47,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 15:54:47,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151313788] [2021-03-11 15:54:47,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 15:54:47,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 15:54:47,449 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 15:54:47,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 15:54:47,452 INFO L142 QuantifierPusher]: treesize reduction 38, result has 47.9 percent of original size [2021-03-11 15:54:47,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 15:54:47,474 INFO L142 QuantifierPusher]: treesize reduction 5, result has 90.2 percent of original size [2021-03-11 15:54:47,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-03-11 15:54:47,498 INFO L142 QuantifierPusher]: treesize reduction 8, result has 89.0 percent of original size [2021-03-11 15:54:47,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-03-11 15:54:47,541 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 15:54:47,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151313788] [2021-03-11 15:54:47,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 15:54:47,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 15:54:47,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167559631] [2021-03-11 15:54:47,542 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 15:54:47,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 15:54:47,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 15:54:47,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-11 15:54:47,543 INFO L87 Difference]: Start difference. First operand 13 states and 14 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 15:54:47,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 15:54:47,633 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2021-03-11 15:54:47,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 15:54:47,633 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 15:54:47,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 15:54:47,634 INFO L225 Difference]: With dead ends: 17 [2021-03-11 15:54:47,634 INFO L226 Difference]: Without dead ends: 11 [2021-03-11 15:54:47,634 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 152.7ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 15:54:47,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-03-11 15:54:47,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-03-11 15:54:47,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.0) internal successors, (10), 10 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 15:54:47,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 10 transitions. [2021-03-11 15:54:47,635 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 10 transitions. Word has length 10 [2021-03-11 15:54:47,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 15:54:47,635 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 10 transitions. [2021-03-11 15:54:47,635 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 15:54:47,635 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2021-03-11 15:54:47,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-03-11 15:54:47,636 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 15:54:47,636 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 15:54:47,636 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 15:54:47,636 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 15:54:47,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 15:54:47,636 INFO L82 PathProgramCache]: Analyzing trace with hash -900956276, now seen corresponding path program 6 times [2021-03-11 15:54:47,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 15:54:47,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799912296] [2021-03-11 15:54:47,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 15:54:47,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 15:54:47,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 15:54:47,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 15:54:47,662 INFO L142 QuantifierPusher]: treesize reduction 136, result has 43.3 percent of original size [2021-03-11 15:54:47,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-03-11 15:54:47,703 INFO L142 QuantifierPusher]: treesize reduction 65, result has 75.3 percent of original size [2021-03-11 15:54:47,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 198 [2021-03-11 15:54:47,848 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 41 [2021-03-11 15:54:47,854 INFO L142 QuantifierPusher]: treesize reduction 33, result has 73.6 percent of original size [2021-03-11 15:54:47,855 INFO L147 QuantifierPusher]: treesize reduction 12, result has 87.0 percent of original size 80 [2021-03-11 15:54:47,919 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 15:54:47,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799912296] [2021-03-11 15:54:47,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 15:54:47,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 15:54:47,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993859602] [2021-03-11 15:54:47,921 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 15:54:47,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 15:54:47,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 15:54:47,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-11 15:54:47,923 INFO L87 Difference]: Start difference. First operand 11 states and 10 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 15:54:48,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 15:54:48,066 INFO L93 Difference]: Finished difference Result 10 states and 9 transitions. [2021-03-11 15:54:48,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 15:54:48,066 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 15:54:48,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 15:54:48,067 INFO L225 Difference]: With dead ends: 10 [2021-03-11 15:54:48,067 INFO L226 Difference]: Without dead ends: 0 [2021-03-11 15:54:48,067 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 376.5ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 15:54:48,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-03-11 15:54:48,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-03-11 15:54:48,067 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 15:54:48,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-03-11 15:54:48,067 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2021-03-11 15:54:48,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 15:54:48,067 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-03-11 15:54:48,067 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 15:54:48,068 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-03-11 15:54:48,068 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-03-11 15:54:48,068 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-11 15:54:48,070 INFO L202 PluginConnector]: Adding new model time-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 03:54:48 BasicIcfg [2021-03-11 15:54:48,070 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 15:54:48,071 INFO L168 Benchmark]: Toolchain (without parser) took 2478.08 ms. Allocated memory was 255.9 MB in the beginning and 341.8 MB in the end (delta: 86.0 MB). Free memory was 236.5 MB in the beginning and 209.3 MB in the end (delta: 27.2 MB). Peak memory consumption was 113.7 MB. Max. memory is 16.0 GB. [2021-03-11 15:54:48,071 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.08 ms. Allocated memory is still 255.9 MB. Free memory is still 237.5 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 15:54:48,071 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.91 ms. Allocated memory is still 255.9 MB. Free memory was 236.1 MB in the beginning and 234.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 15:54:48,072 INFO L168 Benchmark]: Boogie Preprocessor took 14.61 ms. Allocated memory is still 255.9 MB. Free memory was 234.6 MB in the beginning and 233.6 MB in the end (delta: 988.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 15:54:48,072 INFO L168 Benchmark]: RCFGBuilder took 192.82 ms. Allocated memory is still 255.9 MB. Free memory was 233.6 MB in the beginning and 239.4 MB in the end (delta: -5.9 MB). Peak memory consumption was 20.6 MB. Max. memory is 16.0 GB. [2021-03-11 15:54:48,072 INFO L168 Benchmark]: TraceAbstraction took 2243.36 ms. Allocated memory was 255.9 MB in the beginning and 341.8 MB in the end (delta: 86.0 MB). Free memory was 238.8 MB in the beginning and 209.3 MB in the end (delta: 29.5 MB). Peak memory consumption was 114.1 MB. Max. memory is 16.0 GB. [2021-03-11 15:54:48,073 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 0.08 ms. Allocated memory is still 255.9 MB. Free memory is still 237.5 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 20.91 ms. Allocated memory is still 255.9 MB. Free memory was 236.1 MB in the beginning and 234.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 14.61 ms. Allocated memory is still 255.9 MB. Free memory was 234.6 MB in the beginning and 233.6 MB in the end (delta: 988.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 192.82 ms. Allocated memory is still 255.9 MB. Free memory was 233.6 MB in the beginning and 239.4 MB in the end (delta: -5.9 MB). Peak memory consumption was 20.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2243.36 ms. Allocated memory was 255.9 MB in the beginning and 341.8 MB in the end (delta: 86.0 MB). Free memory was 238.8 MB in the beginning and 209.3 MB in the end (delta: 29.5 MB). Peak memory consumption was 114.1 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 187.2ms, 29 PlacesBefore, 24 PlacesAfterwards, 19 TransitionsBefore, 14 TransitionsAfterwards, 48 CoEnabledTransitionPairs, 2 FixpointIterations, 3 TrivialSequentialCompositions, 3 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 6 TotalNumberOfCompositions, 42 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 42, positive: 42, positive conditional: 0, positive unconditional: 42, 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: 30, positive: 30, positive conditional: 0, positive unconditional: 30, 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: 30, positive: 30, positive conditional: 0, positive unconditional: 30, 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: 42, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 30, unknown conditional: 0, unknown unconditional: 30] , 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: 56]: 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: 2192.4ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 12.3ms, AutomataDifference: 735.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 211.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 67 SDtfs, 92 SDslu, 103 SDs, 0 SdLazy, 80 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 63.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1276.2ms 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: 25.3ms AutomataMinimizationTime, 6 MinimizatonAttempts, 15 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 6.9ms SsaConstructionTime, 79.3ms SatisfiabilityAnalysisTime, 1020.1ms InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 1716 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...