/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-PN-RepeatedSemanticLbeWithPredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/collitem-trans.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-6f4246e9f5583d222ebb38ff8175c901f3a528f0-6f4246e [2021-04-29 05:07:10,958 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-29 05:07:10,965 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-29 05:07:11,028 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-04-29 05:07:11,029 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-04-29 05:07:11,031 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-04-29 05:07:11,033 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-04-29 05:07:11,036 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-04-29 05:07:11,041 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-04-29 05:07:11,048 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-04-29 05:07:11,050 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-04-29 05:07:11,054 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-04-29 05:07:11,055 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-04-29 05:07:11,058 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-04-29 05:07:11,060 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-04-29 05:07:11,065 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-04-29 05:07:11,068 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-04-29 05:07:11,070 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-04-29 05:07:11,078 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-04-29 05:07:11,088 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-04-29 05:07:11,094 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-04-29 05:07:11,096 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-04-29 05:07:11,100 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-04-29 05:07:11,102 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-04-29 05:07:11,110 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-04-29 05:07:11,131 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-29 05:07:11,133 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-29 05:07:11,134 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-29 05:07:11,135 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-PN-RepeatedSemanticLbeWithPredicates.epf [2021-04-29 05:07:11,212 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-29 05:07:11,213 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-29 05:07:11,220 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-04-29 05:07:11,221 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-04-29 05:07:11,221 INFO L138 SettingsManager]: * Use SBE=true [2021-04-29 05:07:11,221 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-29 05:07:11,222 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-29 05:07:11,223 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-29 05:07:11,223 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-29 05:07:11,223 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-29 05:07:11,223 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-29 05:07:11,223 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-29 05:07:11,224 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-29 05:07:11,224 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-29 05:07:11,224 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-29 05:07:11,224 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-29 05:07:11,225 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-29 05:07:11,225 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-29 05:07:11,225 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-29 05:07:11,225 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-29 05:07:11,226 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-29 05:07:11,226 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-29 05:07:11,226 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-29 05:07:11,227 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-04-29 05:07:11,227 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-04-29 05:07:11,227 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-04-29 05:07:11,227 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-04-29 05:07:11,227 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES [2021-04-29 05:07:11,228 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-04-29 05:07:11,228 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-04-29 05:07:11,228 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-29 05:07:11,709 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-29 05:07:11,738 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-29 05:07:11,742 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-29 05:07:11,744 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-04-29 05:07:11,747 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-04-29 05:07:11,748 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/collitem-trans.wvr.bpl [2021-04-29 05:07:11,749 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/collitem-trans.wvr.bpl' [2021-04-29 05:07:11,804 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-29 05:07:11,846 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-04-29 05:07:11,848 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-04-29 05:07:11,848 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-04-29 05:07:11,848 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-04-29 05:07:11,870 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "collitem-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 05:07:11" (1/1) ... [2021-04-29 05:07:11,882 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "collitem-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 05:07:11" (1/1) ... [2021-04-29 05:07:11,893 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-04-29 05:07:11,895 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-29 05:07:11,896 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-29 05:07:11,896 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-29 05:07:11,908 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "collitem-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 05:07:11" (1/1) ... [2021-04-29 05:07:11,909 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "collitem-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 05:07:11" (1/1) ... [2021-04-29 05:07:11,910 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "collitem-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 05:07:11" (1/1) ... [2021-04-29 05:07:11,911 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "collitem-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 05:07:11" (1/1) ... [2021-04-29 05:07:11,915 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "collitem-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 05:07:11" (1/1) ... [2021-04-29 05:07:11,916 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "collitem-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 05:07:11" (1/1) ... [2021-04-29 05:07:11,918 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "collitem-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 05:07:11" (1/1) ... [2021-04-29 05:07:11,920 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-29 05:07:11,922 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-29 05:07:11,922 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-29 05:07:11,922 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-29 05:07:11,924 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "collitem-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 05:07:11" (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 [2021-04-29 05:07:12,053 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-04-29 05:07:12,053 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-04-29 05:07:12,054 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-04-29 05:07:12,054 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-04-29 05:07:12,054 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-04-29 05:07:12,054 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-04-29 05:07:12,054 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-04-29 05:07:12,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-29 05:07:12,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-29 05:07:12,055 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-04-29 05:07:12,056 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-04-29 05:07:12,056 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-04-29 05:07:12,057 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-04-29 05:07:12,652 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-29 05:07:12,653 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-04-29 05:07:12,662 INFO L202 PluginConnector]: Adding new model collitem-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 05:07:12 BoogieIcfgContainer [2021-04-29 05:07:12,662 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-29 05:07:12,665 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-29 05:07:12,665 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-29 05:07:12,670 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-29 05:07:12,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "collitem-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 05:07:11" (1/2) ... [2021-04-29 05:07:12,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dede327 and model type collitem-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 05:07:12, skipping insertion in model container [2021-04-29 05:07:12,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "collitem-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 05:07:12" (2/2) ... [2021-04-29 05:07:12,676 INFO L111 eAbstractionObserver]: Analyzing ICFG collitem-trans.wvr.bpl [2021-04-29 05:07:12,687 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-04-29 05:07:12,693 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-04-29 05:07:12,694 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-04-29 05:07:12,753 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-04-29 05:07:12,781 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-04-29 05:07:12,817 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-29 05:07:12,817 INFO L377 AbstractCegarLoop]: Hoare is false [2021-04-29 05:07:12,817 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-04-29 05:07:12,817 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-29 05:07:12,818 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-29 05:07:12,818 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-29 05:07:12,818 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-29 05:07:12,818 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-29 05:07:12,833 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 29 places, 19 transitions, 62 flow [2021-04-29 05:07:12,867 INFO L129 PetriNetUnfolder]: 0/16 cut-off events. [2021-04-29 05:07:12,867 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-04-29 05:07:12,870 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. [2021-04-29 05:07:12,870 INFO L82 GeneralOperation]: Start removeDead. Operand has 29 places, 19 transitions, 62 flow [2021-04-29 05:07:12,877 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 24 places, 14 transitions, 46 flow [2021-04-29 05:07:12,880 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 05:07:12,904 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 24 places, 14 transitions, 46 flow [2021-04-29 05:07:12,910 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 24 places, 14 transitions, 46 flow [2021-04-29 05:07:12,911 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 24 places, 14 transitions, 46 flow [2021-04-29 05:07:12,922 INFO L129 PetriNetUnfolder]: 0/14 cut-off events. [2021-04-29 05:07:12,922 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-04-29 05:07:12,923 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27 conditions, 14 events. 0/14 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. 0/14 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-04-29 05:07:12,926 INFO L146 LiptonReduction]: Number of co-enabled transitions 48 [2021-04-29 05:07:13,165 INFO L158 LiptonReduction]: Checked pairs total: 18 [2021-04-29 05:07:13,166 INFO L160 LiptonReduction]: Total number of compositions: 4 [2021-04-29 05:07:13,189 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 311 [2021-04-29 05:07:13,230 INFO L129 PetriNetUnfolder]: 0/12 cut-off events. [2021-04-29 05:07:13,231 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-04-29 05:07:13,231 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 05:07:13,233 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 05:07:13,234 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-29 05:07:13,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 05:07:13,248 INFO L82 PathProgramCache]: Analyzing trace with hash 840283623, now seen corresponding path program 1 times [2021-04-29 05:07:13,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 05:07:13,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620589227] [2021-04-29 05:07:13,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 05:07:13,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 05:07:14,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 05:07:14,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 05:07:14,439 WARN L205 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 375 DAG size of output: 227 [2021-04-29 05:07:14,446 INFO L142 QuantifierPusher]: treesize reduction 9033, result has 20.9 percent of original size [2021-04-29 05:07:14,502 INFO L147 QuantifierPusher]: treesize reduction 123, result has 94.8 percent of original size 2264 [2021-04-29 05:07:15,351 WARN L205 SmtUtils]: Spent 823.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 49 [2021-04-29 05:07:15,387 INFO L142 QuantifierPusher]: treesize reduction 825, result has 45.8 percent of original size [2021-04-29 05:07:15,402 INFO L147 QuantifierPusher]: treesize reduction 336, result has 51.7 percent of original size 360 [2021-04-29 05:07:15,668 WARN L205 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 58 [2021-04-29 05:07:15,673 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 05:07:15,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-29 05:07:15,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 05:07:15,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620589227] [2021-04-29 05:07:15,715 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 05:07:15,715 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-04-29 05:07:15,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510000302] [2021-04-29 05:07:15,733 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-29 05:07:15,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 05:07:15,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-29 05:07:15,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-04-29 05:07:15,768 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 23 [2021-04-29 05:07:15,771 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 14 transitions, 46 flow. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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) [2021-04-29 05:07:15,772 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 05:07:15,774 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 23 [2021-04-29 05:07:15,776 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 05:07:16,194 WARN L205 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 90 [2021-04-29 05:07:16,608 WARN L205 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 97 [2021-04-29 05:07:16,661 INFO L129 PetriNetUnfolder]: 16/86 cut-off events. [2021-04-29 05:07:16,662 INFO L130 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2021-04-29 05:07:16,664 INFO L84 FinitePrefix]: Finished finitePrefix Result has 180 conditions, 86 events. 16/86 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 456 event pairs, 4 based on Foata normal form. 1/52 useless extension candidates. Maximal degree in co-relation 152. Up to 32 conditions per place. [2021-04-29 05:07:16,666 INFO L132 encePairwiseOnDemand]: 15/23 looper letters, 5 selfloop transitions, 2 changer transitions 9/22 dead transitions. [2021-04-29 05:07:16,667 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 22 transitions, 94 flow [2021-04-29 05:07:16,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-29 05:07:16,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-04-29 05:07:16,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 88 transitions. [2021-04-29 05:07:16,686 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7652173913043478 [2021-04-29 05:07:16,687 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 88 transitions. [2021-04-29 05:07:16,688 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 88 transitions. [2021-04-29 05:07:16,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 05:07:16,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 88 transitions. [2021-04-29 05:07:16,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 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) [2021-04-29 05:07:16,705 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 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) [2021-04-29 05:07:16,706 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 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) [2021-04-29 05:07:16,709 INFO L185 Difference]: Start difference. First operand has 24 places, 14 transitions, 46 flow. Second operand 5 states and 88 transitions. [2021-04-29 05:07:16,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 22 transitions, 94 flow [2021-04-29 05:07:16,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 22 transitions, 82 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-04-29 05:07:16,720 INFO L241 Difference]: Finished difference. Result has 25 places, 11 transitions, 41 flow [2021-04-29 05:07:16,723 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=41, PETRI_PLACES=25, PETRI_TRANSITIONS=11} [2021-04-29 05:07:16,724 INFO L343 CegarLoopForPetriNet]: 24 programPoint places, 1 predicate places. [2021-04-29 05:07:16,725 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 05:07:16,725 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 25 places, 11 transitions, 41 flow [2021-04-29 05:07:16,726 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 25 places, 11 transitions, 41 flow [2021-04-29 05:07:16,727 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 20 places, 11 transitions, 41 flow [2021-04-29 05:07:16,732 INFO L129 PetriNetUnfolder]: 0/18 cut-off events. [2021-04-29 05:07:16,732 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-04-29 05:07:16,733 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 18 events. 0/18 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 24 event pairs, 0 based on Foata normal form. 0/16 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2021-04-29 05:07:16,733 INFO L146 LiptonReduction]: Number of co-enabled transitions 16 [2021-04-29 05:07:16,735 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 05:07:16,735 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 05:07:16,735 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 10 [2021-04-29 05:07:16,737 INFO L480 AbstractCegarLoop]: Abstraction has has 20 places, 11 transitions, 41 flow [2021-04-29 05:07:16,738 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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) [2021-04-29 05:07:16,738 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 05:07:16,739 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 05:07:16,739 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-29 05:07:16,739 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-29 05:07:16,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 05:07:16,740 INFO L82 PathProgramCache]: Analyzing trace with hash -934779477, now seen corresponding path program 2 times [2021-04-29 05:07:16,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 05:07:16,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501410910] [2021-04-29 05:07:16,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 05:07:16,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 05:07:17,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 05:07:17,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 05:07:17,080 INFO L142 QuantifierPusher]: treesize reduction 5602, result has 20.8 percent of original size [2021-04-29 05:07:17,099 INFO L147 QuantifierPusher]: treesize reduction 217, result has 85.2 percent of original size 1254 [2021-04-29 05:07:17,648 WARN L205 SmtUtils]: Spent 534.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 36 [2021-04-29 05:07:17,693 INFO L142 QuantifierPusher]: treesize reduction 2571, result has 16.6 percent of original size [2021-04-29 05:07:17,704 INFO L147 QuantifierPusher]: treesize reduction 55, result has 89.3 percent of original size 458 [2021-04-29 05:07:18,069 WARN L205 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 46 [2021-04-29 05:07:18,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 05:07:18,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-29 05:07:18,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 05:07:18,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501410910] [2021-04-29 05:07:18,106 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 05:07:18,106 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-04-29 05:07:18,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499755975] [2021-04-29 05:07:18,108 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-29 05:07:18,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 05:07:18,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-29 05:07:18,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-04-29 05:07:18,111 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 23 [2021-04-29 05:07:18,112 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 11 transitions, 41 flow. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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) [2021-04-29 05:07:18,112 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 05:07:18,112 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 23 [2021-04-29 05:07:18,112 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 05:07:18,266 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2021-04-29 05:07:18,401 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2021-04-29 05:07:18,437 INFO L129 PetriNetUnfolder]: 2/29 cut-off events. [2021-04-29 05:07:18,438 INFO L130 PetriNetUnfolder]: For 24/26 co-relation queries the response was YES. [2021-04-29 05:07:18,438 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 29 events. 2/29 cut-off events. For 24/26 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 82 event pairs, 0 based on Foata normal form. 1/28 useless extension candidates. Maximal degree in co-relation 58. Up to 7 conditions per place. [2021-04-29 05:07:18,439 INFO L132 encePairwiseOnDemand]: 19/23 looper letters, 5 selfloop transitions, 2 changer transitions 3/16 dead transitions. [2021-04-29 05:07:18,439 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 16 transitions, 85 flow [2021-04-29 05:07:18,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-29 05:07:18,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-04-29 05:07:18,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 79 transitions. [2021-04-29 05:07:18,447 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6869565217391305 [2021-04-29 05:07:18,447 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 79 transitions. [2021-04-29 05:07:18,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 79 transitions. [2021-04-29 05:07:18,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 05:07:18,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 79 transitions. [2021-04-29 05:07:18,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 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) [2021-04-29 05:07:18,461 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 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) [2021-04-29 05:07:18,462 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 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) [2021-04-29 05:07:18,462 INFO L185 Difference]: Start difference. First operand has 20 places, 11 transitions, 41 flow. Second operand 5 states and 79 transitions. [2021-04-29 05:07:18,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 16 transitions, 85 flow [2021-04-29 05:07:18,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 16 transitions, 78 flow, removed 2 selfloop flow, removed 2 redundant places. [2021-04-29 05:07:18,469 INFO L241 Difference]: Finished difference. Result has 25 places, 11 transitions, 51 flow [2021-04-29 05:07:18,470 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=51, PETRI_PLACES=25, PETRI_TRANSITIONS=11} [2021-04-29 05:07:18,472 INFO L343 CegarLoopForPetriNet]: 24 programPoint places, 1 predicate places. [2021-04-29 05:07:18,472 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 05:07:18,473 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 25 places, 11 transitions, 51 flow [2021-04-29 05:07:18,474 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 25 places, 11 transitions, 51 flow [2021-04-29 05:07:18,475 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 24 places, 11 transitions, 51 flow [2021-04-29 05:07:18,484 INFO L129 PetriNetUnfolder]: 0/17 cut-off events. [2021-04-29 05:07:18,485 INFO L130 PetriNetUnfolder]: For 13/14 co-relation queries the response was YES. [2021-04-29 05:07:18,485 INFO L84 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 17 events. 0/17 cut-off events. For 13/14 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 22 event pairs, 0 based on Foata normal form. 0/16 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-04-29 05:07:18,485 INFO L146 LiptonReduction]: Number of co-enabled transitions 14 [2021-04-29 05:07:18,486 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 05:07:18,487 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 05:07:18,487 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 15 [2021-04-29 05:07:18,488 INFO L480 AbstractCegarLoop]: Abstraction has has 24 places, 11 transitions, 51 flow [2021-04-29 05:07:18,489 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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) [2021-04-29 05:07:18,489 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 05:07:18,489 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 05:07:18,489 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-04-29 05:07:18,489 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-29 05:07:18,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 05:07:18,490 INFO L82 PathProgramCache]: Analyzing trace with hash 883606447, now seen corresponding path program 3 times [2021-04-29 05:07:18,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 05:07:18,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741324527] [2021-04-29 05:07:18,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 05:07:18,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 05:07:18,677 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 05:07:18,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 05:07:18,876 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 128 [2021-04-29 05:07:18,878 INFO L142 QuantifierPusher]: treesize reduction 19078, result has 8.8 percent of original size [2021-04-29 05:07:18,894 INFO L147 QuantifierPusher]: treesize reduction 1210, result has 34.2 percent of original size 628 [2021-04-29 05:07:19,255 WARN L205 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 36 [2021-04-29 05:07:19,303 INFO L142 QuantifierPusher]: treesize reduction 11939, result has 2.0 percent of original size [2021-04-29 05:07:19,308 INFO L147 QuantifierPusher]: treesize reduction 47, result has 81.0 percent of original size 201 [2021-04-29 05:07:19,501 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 45 [2021-04-29 05:07:19,504 INFO L142 QuantifierPusher]: treesize reduction 10, result has 73.7 percent of original size [2021-04-29 05:07:19,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-04-29 05:07:19,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 05:07:19,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741324527] [2021-04-29 05:07:19,543 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 05:07:19,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-04-29 05:07:19,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493891448] [2021-04-29 05:07:19,544 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-29 05:07:19,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 05:07:19,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-29 05:07:19,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-04-29 05:07:19,546 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 23 [2021-04-29 05:07:19,547 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 11 transitions, 51 flow. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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) [2021-04-29 05:07:19,547 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 05:07:19,547 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 23 [2021-04-29 05:07:19,548 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 05:07:19,713 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2021-04-29 05:07:19,871 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-04-29 05:07:19,887 INFO L129 PetriNetUnfolder]: 1/23 cut-off events. [2021-04-29 05:07:19,888 INFO L130 PetriNetUnfolder]: For 45/49 co-relation queries the response was YES. [2021-04-29 05:07:19,888 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 23 events. 1/23 cut-off events. For 45/49 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 46 event pairs, 1 based on Foata normal form. 1/24 useless extension candidates. Maximal degree in co-relation 56. Up to 5 conditions per place. [2021-04-29 05:07:19,888 INFO L132 encePairwiseOnDemand]: 19/23 looper letters, 5 selfloop transitions, 3 changer transitions 1/15 dead transitions. [2021-04-29 05:07:19,889 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 15 transitions, 93 flow [2021-04-29 05:07:19,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-29 05:07:19,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-04-29 05:07:19,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 79 transitions. [2021-04-29 05:07:19,904 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6869565217391305 [2021-04-29 05:07:19,904 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 79 transitions. [2021-04-29 05:07:19,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 79 transitions. [2021-04-29 05:07:19,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 05:07:19,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 79 transitions. [2021-04-29 05:07:19,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 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) [2021-04-29 05:07:19,907 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 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) [2021-04-29 05:07:19,908 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 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) [2021-04-29 05:07:19,908 INFO L185 Difference]: Start difference. First operand has 24 places, 11 transitions, 51 flow. Second operand 5 states and 79 transitions. [2021-04-29 05:07:19,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 15 transitions, 93 flow [2021-04-29 05:07:19,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 15 transitions, 74 flow, removed 7 selfloop flow, removed 4 redundant places. [2021-04-29 05:07:19,911 INFO L241 Difference]: Finished difference. Result has 27 places, 12 transitions, 62 flow [2021-04-29 05:07:19,911 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=62, PETRI_PLACES=27, PETRI_TRANSITIONS=12} [2021-04-29 05:07:19,911 INFO L343 CegarLoopForPetriNet]: 24 programPoint places, 3 predicate places. [2021-04-29 05:07:19,911 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 05:07:19,912 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 27 places, 12 transitions, 62 flow [2021-04-29 05:07:19,912 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 27 places, 12 transitions, 62 flow [2021-04-29 05:07:19,913 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 26 places, 12 transitions, 62 flow [2021-04-29 05:07:19,918 INFO L129 PetriNetUnfolder]: 0/18 cut-off events. [2021-04-29 05:07:19,918 INFO L130 PetriNetUnfolder]: For 20/24 co-relation queries the response was YES. [2021-04-29 05:07:19,918 INFO L84 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 18 events. 0/18 cut-off events. For 20/24 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 25 event pairs, 0 based on Foata normal form. 0/17 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2021-04-29 05:07:19,919 INFO L146 LiptonReduction]: Number of co-enabled transitions 14 [2021-04-29 05:07:19,920 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 05:07:19,920 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 05:07:19,920 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 9 [2021-04-29 05:07:19,922 INFO L480 AbstractCegarLoop]: Abstraction has has 26 places, 12 transitions, 62 flow [2021-04-29 05:07:19,922 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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) [2021-04-29 05:07:19,923 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 05:07:19,923 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 05:07:19,923 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-04-29 05:07:19,923 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-29 05:07:19,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 05:07:19,924 INFO L82 PathProgramCache]: Analyzing trace with hash -31273989, now seen corresponding path program 4 times [2021-04-29 05:07:19,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 05:07:19,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215298622] [2021-04-29 05:07:19,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 05:07:19,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 05:07:20,049 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 05:07:20,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 05:07:20,074 INFO L142 QuantifierPusher]: treesize reduction 1977, result has 27.9 percent of original size [2021-04-29 05:07:20,083 INFO L147 QuantifierPusher]: treesize reduction 166, result has 78.3 percent of original size 598 [2021-04-29 05:07:20,343 WARN L205 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 33 [2021-04-29 05:07:20,465 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 120 [2021-04-29 05:07:20,467 INFO L142 QuantifierPusher]: treesize reduction 18199, result has 7.9 percent of original size [2021-04-29 05:07:20,489 INFO L147 QuantifierPusher]: treesize reduction 336, result has 78.5 percent of original size 1227 [2021-04-29 05:07:21,107 WARN L205 SmtUtils]: Spent 599.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 45 [2021-04-29 05:07:21,123 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 05:07:21,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-29 05:07:21,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 05:07:21,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215298622] [2021-04-29 05:07:21,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 05:07:21,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-04-29 05:07:21,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28092997] [2021-04-29 05:07:21,159 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-29 05:07:21,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 05:07:21,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-29 05:07:21,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-04-29 05:07:21,161 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 23 [2021-04-29 05:07:21,161 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 12 transitions, 62 flow. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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) [2021-04-29 05:07:21,162 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 05:07:21,162 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 23 [2021-04-29 05:07:21,162 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 05:07:21,303 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-04-29 05:07:21,471 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-04-29 05:07:21,486 INFO L129 PetriNetUnfolder]: 1/19 cut-off events. [2021-04-29 05:07:21,487 INFO L130 PetriNetUnfolder]: For 47/59 co-relation queries the response was YES. [2021-04-29 05:07:21,487 INFO L84 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 19 events. 1/19 cut-off events. For 47/59 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 33 event pairs, 1 based on Foata normal form. 3/21 useless extension candidates. Maximal degree in co-relation 54. Up to 5 conditions per place. [2021-04-29 05:07:21,487 INFO L132 encePairwiseOnDemand]: 19/23 looper letters, 3 selfloop transitions, 1 changer transitions 4/14 dead transitions. [2021-04-29 05:07:21,488 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 14 transitions, 92 flow [2021-04-29 05:07:21,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-29 05:07:21,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-04-29 05:07:21,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 78 transitions. [2021-04-29 05:07:21,490 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6782608695652174 [2021-04-29 05:07:21,490 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 78 transitions. [2021-04-29 05:07:21,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 78 transitions. [2021-04-29 05:07:21,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 05:07:21,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 78 transitions. [2021-04-29 05:07:21,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 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) [2021-04-29 05:07:21,493 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 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) [2021-04-29 05:07:21,493 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 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) [2021-04-29 05:07:21,493 INFO L185 Difference]: Start difference. First operand has 26 places, 12 transitions, 62 flow. Second operand 5 states and 78 transitions. [2021-04-29 05:07:21,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 14 transitions, 92 flow [2021-04-29 05:07:21,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 14 transitions, 88 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-04-29 05:07:21,496 INFO L241 Difference]: Finished difference. Result has 30 places, 10 transitions, 49 flow [2021-04-29 05:07:21,497 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=49, PETRI_PLACES=30, PETRI_TRANSITIONS=10} [2021-04-29 05:07:21,497 INFO L343 CegarLoopForPetriNet]: 24 programPoint places, 6 predicate places. [2021-04-29 05:07:21,497 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 05:07:21,497 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 30 places, 10 transitions, 49 flow [2021-04-29 05:07:21,498 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 30 places, 10 transitions, 49 flow [2021-04-29 05:07:21,498 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 27 places, 10 transitions, 49 flow [2021-04-29 05:07:21,502 INFO L129 PetriNetUnfolder]: 0/10 cut-off events. [2021-04-29 05:07:21,502 INFO L130 PetriNetUnfolder]: For 14/15 co-relation queries the response was YES. [2021-04-29 05:07:21,503 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33 conditions, 10 events. 0/10 cut-off events. For 14/15 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 1 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-04-29 05:07:21,503 INFO L146 LiptonReduction]: Number of co-enabled transitions 4 [2021-04-29 05:07:21,504 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 05:07:21,505 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 05:07:21,505 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 8 [2021-04-29 05:07:21,506 INFO L480 AbstractCegarLoop]: Abstraction has has 27 places, 10 transitions, 49 flow [2021-04-29 05:07:21,507 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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) [2021-04-29 05:07:21,507 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 05:07:21,507 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 05:07:21,507 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-04-29 05:07:21,507 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-29 05:07:21,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 05:07:21,508 INFO L82 PathProgramCache]: Analyzing trace with hash 815259183, now seen corresponding path program 5 times [2021-04-29 05:07:21,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 05:07:21,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381727207] [2021-04-29 05:07:21,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 05:07:21,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 05:07:21,677 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 05:07:21,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 05:07:21,776 INFO L142 QuantifierPusher]: treesize reduction 9632, result has 18.3 percent of original size [2021-04-29 05:07:21,796 INFO L147 QuantifierPusher]: treesize reduction 312, result has 85.6 percent of original size 1848 [2021-04-29 05:07:22,570 WARN L205 SmtUtils]: Spent 761.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 50 [2021-04-29 05:07:22,590 INFO L142 QuantifierPusher]: treesize reduction 1376, result has 40.8 percent of original size [2021-04-29 05:07:22,598 INFO L147 QuantifierPusher]: treesize reduction 184, result has 80.6 percent of original size 766 [2021-04-29 05:07:23,072 WARN L205 SmtUtils]: Spent 460.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 56 [2021-04-29 05:07:23,080 INFO L142 QuantifierPusher]: treesize reduction 16, result has 59.0 percent of original size [2021-04-29 05:07:23,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-29 05:07:23,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 05:07:23,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381727207] [2021-04-29 05:07:23,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 05:07:23,114 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-04-29 05:07:23,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54802699] [2021-04-29 05:07:23,115 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-29 05:07:23,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 05:07:23,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-29 05:07:23,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-04-29 05:07:23,117 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 23 [2021-04-29 05:07:23,118 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 10 transitions, 49 flow. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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) [2021-04-29 05:07:23,118 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 05:07:23,118 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 23 [2021-04-29 05:07:23,118 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 05:07:23,628 WARN L205 SmtUtils]: Spent 480.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 85 [2021-04-29 05:07:24,201 WARN L205 SmtUtils]: Spent 545.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 92 [2021-04-29 05:07:24,216 INFO L129 PetriNetUnfolder]: 0/16 cut-off events. [2021-04-29 05:07:24,217 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2021-04-29 05:07:24,217 INFO L84 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 16 events. 0/16 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 12 event pairs, 0 based on Foata normal form. 1/16 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2021-04-29 05:07:24,217 INFO L132 encePairwiseOnDemand]: 19/23 looper letters, 3 selfloop transitions, 1 changer transitions 2/12 dead transitions. [2021-04-29 05:07:24,218 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 12 transitions, 82 flow [2021-04-29 05:07:24,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-29 05:07:24,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-04-29 05:07:24,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 77 transitions. [2021-04-29 05:07:24,222 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6695652173913044 [2021-04-29 05:07:24,222 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 77 transitions. [2021-04-29 05:07:24,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 77 transitions. [2021-04-29 05:07:24,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 05:07:24,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 77 transitions. [2021-04-29 05:07:24,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 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) [2021-04-29 05:07:24,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 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) [2021-04-29 05:07:24,225 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 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) [2021-04-29 05:07:24,226 INFO L185 Difference]: Start difference. First operand has 27 places, 10 transitions, 49 flow. Second operand 5 states and 77 transitions. [2021-04-29 05:07:24,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 12 transitions, 82 flow [2021-04-29 05:07:24,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 12 transitions, 47 flow, removed 6 selfloop flow, removed 11 redundant places. [2021-04-29 05:07:24,228 INFO L241 Difference]: Finished difference. Result has 23 places, 10 transitions, 35 flow [2021-04-29 05:07:24,228 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=26, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=35, PETRI_PLACES=23, PETRI_TRANSITIONS=10} [2021-04-29 05:07:24,228 INFO L343 CegarLoopForPetriNet]: 24 programPoint places, -1 predicate places. [2021-04-29 05:07:24,229 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 05:07:24,229 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 23 places, 10 transitions, 35 flow [2021-04-29 05:07:24,229 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 23 places, 10 transitions, 35 flow [2021-04-29 05:07:24,230 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 21 places, 10 transitions, 35 flow [2021-04-29 05:07:24,234 INFO L129 PetriNetUnfolder]: 0/11 cut-off events. [2021-04-29 05:07:24,234 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-04-29 05:07:24,234 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26 conditions, 11 events. 0/11 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 3 event pairs, 0 based on Foata normal form. 0/11 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-04-29 05:07:24,235 INFO L146 LiptonReduction]: Number of co-enabled transitions 2 [2021-04-29 05:07:24,235 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 05:07:24,236 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 05:07:24,236 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 7 [2021-04-29 05:07:24,237 INFO L480 AbstractCegarLoop]: Abstraction has has 21 places, 10 transitions, 35 flow [2021-04-29 05:07:24,238 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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) [2021-04-29 05:07:24,238 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 05:07:24,238 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 05:07:24,239 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-04-29 05:07:24,239 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-29 05:07:24,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 05:07:24,239 INFO L82 PathProgramCache]: Analyzing trace with hash -902489877, now seen corresponding path program 6 times [2021-04-29 05:07:24,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 05:07:24,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265978949] [2021-04-29 05:07:24,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 05:07:24,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 05:07:24,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 05:07:24,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 05:07:24,444 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 131 [2021-04-29 05:07:24,446 INFO L142 QuantifierPusher]: treesize reduction 26263, result has 10.8 percent of original size [2021-04-29 05:07:24,463 INFO L147 QuantifierPusher]: treesize reduction 2159, result has 31.8 percent of original size 1007 [2021-04-29 05:07:24,917 WARN L205 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 37 [2021-04-29 05:07:24,930 INFO L142 QuantifierPusher]: treesize reduction 1093, result has 20.9 percent of original size [2021-04-29 05:07:24,934 INFO L147 QuantifierPusher]: treesize reduction 144, result has 50.2 percent of original size 145 [2021-04-29 05:07:25,069 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 35 [2021-04-29 05:07:25,072 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 05:07:25,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-29 05:07:25,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 05:07:25,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265978949] [2021-04-29 05:07:25,109 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 05:07:25,109 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-04-29 05:07:25,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157575565] [2021-04-29 05:07:25,110 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-29 05:07:25,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 05:07:25,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-29 05:07:25,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-04-29 05:07:25,111 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 23 [2021-04-29 05:07:25,112 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 10 transitions, 35 flow. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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) [2021-04-29 05:07:25,112 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 05:07:25,112 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 23 [2021-04-29 05:07:25,112 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 05:07:25,342 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2021-04-29 05:07:25,345 INFO L129 PetriNetUnfolder]: 0/10 cut-off events. [2021-04-29 05:07:25,346 INFO L130 PetriNetUnfolder]: For 9/11 co-relation queries the response was YES. [2021-04-29 05:07:25,346 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 10 events. 0/10 cut-off events. For 9/11 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 2 event pairs, 0 based on Foata normal form. 1/11 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-04-29 05:07:25,346 INFO L132 encePairwiseOnDemand]: 19/23 looper letters, 0 selfloop transitions, 0 changer transitions 10/10 dead transitions. [2021-04-29 05:07:25,346 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 10 transitions, 44 flow [2021-04-29 05:07:25,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-29 05:07:25,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-04-29 05:07:25,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 75 transitions. [2021-04-29 05:07:25,348 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6521739130434783 [2021-04-29 05:07:25,348 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 75 transitions. [2021-04-29 05:07:25,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 75 transitions. [2021-04-29 05:07:25,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 05:07:25,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 75 transitions. [2021-04-29 05:07:25,349 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 05:07:25,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 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) [2021-04-29 05:07:25,351 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 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) [2021-04-29 05:07:25,351 INFO L185 Difference]: Start difference. First operand has 21 places, 10 transitions, 35 flow. Second operand 5 states and 75 transitions. [2021-04-29 05:07:25,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 10 transitions, 44 flow [2021-04-29 05:07:25,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 10 transitions, 40 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-04-29 05:07:25,352 INFO L241 Difference]: Finished difference. Result has 22 places, 0 transitions, 0 flow [2021-04-29 05:07:25,352 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=9, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=22, PETRI_TRANSITIONS=0} [2021-04-29 05:07:25,353 INFO L343 CegarLoopForPetriNet]: 24 programPoint places, -2 predicate places. [2021-04-29 05:07:25,353 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 05:07:25,353 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 22 places, 0 transitions, 0 flow [2021-04-29 05:07:25,353 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 22 places, 0 transitions, 0 flow [2021-04-29 05:07:25,353 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-04-29 05:07:25,354 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-04-29 05:07:25,354 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 05:07:25,354 INFO L84 FinitePrefix]: Finished finitePrefix Result has 0 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 0 conditions per place. [2021-04-29 05:07:25,354 INFO L146 LiptonReduction]: Number of co-enabled transitions 0 [2021-04-29 05:07:25,354 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 05:07:25,354 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 05:07:25,355 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2 [2021-04-29 05:07:25,356 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-04-29 05:07:25,356 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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) [2021-04-29 05:07:25,356 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-04-29 05:07:25,361 INFO L202 PluginConnector]: Adding new model collitem-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.04 05:07:25 BasicIcfg [2021-04-29 05:07:25,361 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-04-29 05:07:25,363 INFO L168 Benchmark]: Toolchain (without parser) took 13556.39 ms. Allocated memory was 302.0 MB in the beginning and 362.8 MB in the end (delta: 60.8 MB). Free memory was 271.8 MB in the beginning and 266.6 MB in the end (delta: 5.2 MB). Peak memory consumption was 65.9 MB. Max. memory is 16.0 GB. [2021-04-29 05:07:25,363 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.98 ms. Allocated memory is still 302.0 MB. Free memory was 273.0 MB in the beginning and 272.9 MB in the end (delta: 71.0 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-04-29 05:07:25,364 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.98 ms. Allocated memory is still 302.0 MB. Free memory was 268.7 MB in the beginning and 267.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-04-29 05:07:25,365 INFO L168 Benchmark]: Boogie Preprocessor took 25.11 ms. Allocated memory is still 302.0 MB. Free memory was 267.3 MB in the beginning and 266.4 MB in the end (delta: 875.4 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-04-29 05:07:25,365 INFO L168 Benchmark]: RCFGBuilder took 740.59 ms. Allocated memory is still 302.0 MB. Free memory was 266.3 MB in the beginning and 272.3 MB in the end (delta: -6.0 MB). Peak memory consumption was 5.8 MB. Max. memory is 16.0 GB. [2021-04-29 05:07:25,366 INFO L168 Benchmark]: TraceAbstraction took 12696.52 ms. Allocated memory was 302.0 MB in the beginning and 362.8 MB in the end (delta: 60.8 MB). Free memory was 271.9 MB in the beginning and 266.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 66.3 MB. Max. memory is 16.0 GB. [2021-04-29 05:07:25,368 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 0.98 ms. Allocated memory is still 302.0 MB. Free memory was 273.0 MB in the beginning and 272.9 MB in the end (delta: 71.0 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 45.98 ms. Allocated memory is still 302.0 MB. Free memory was 268.7 MB in the beginning and 267.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 25.11 ms. Allocated memory is still 302.0 MB. Free memory was 267.3 MB in the beginning and 266.4 MB in the end (delta: 875.4 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 740.59 ms. Allocated memory is still 302.0 MB. Free memory was 266.3 MB in the beginning and 272.3 MB in the end (delta: -6.0 MB). Peak memory consumption was 5.8 MB. Max. memory is 16.0 GB. * TraceAbstraction took 12696.52 ms. Allocated memory was 302.0 MB in the beginning and 362.8 MB in the end (delta: 60.8 MB). Free memory was 271.9 MB in the beginning and 266.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 66.3 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 270.6ms, 24 PlacesBefore, 24 PlacesAfterwards, 14 TransitionsBefore, 14 TransitionsAfterwards, 48 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 3 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 4 TotalNumberOfCompositions, 18 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 18, positive: 18, positive conditional: 18, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 18, positive: 18, positive conditional: 0, positive unconditional: 18, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 18, positive: 18, positive conditional: 0, positive unconditional: 18, 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: 18, positive: 18, positive conditional: 0, positive unconditional: 18, 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: 18, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 18, unknown conditional: 18, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 18, Positive cache size: 18, Positive conditional cache size: 18, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 9.1ms, 25 PlacesBefore, 20 PlacesAfterwards, 11 TransitionsBefore, 11 TransitionsAfterwards, 16 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.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] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.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] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.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] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.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.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: 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] , Statistics on independence cache: Total cache size (in pairs): 18, Positive cache size: 18, Positive conditional cache size: 18, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 12.8ms, 25 PlacesBefore, 24 PlacesAfterwards, 11 TransitionsBefore, 11 TransitionsAfterwards, 14 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.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] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.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] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.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] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.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.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: 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] , Statistics on independence cache: Total cache size (in pairs): 18, Positive cache size: 18, Positive conditional cache size: 18, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8.2ms, 27 PlacesBefore, 26 PlacesAfterwards, 12 TransitionsBefore, 12 TransitionsAfterwards, 14 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.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] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.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] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.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] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.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.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: 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] , Statistics on independence cache: Total cache size (in pairs): 18, Positive cache size: 18, Positive conditional cache size: 18, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.8ms, 30 PlacesBefore, 27 PlacesAfterwards, 10 TransitionsBefore, 10 TransitionsAfterwards, 4 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.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] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.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] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.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] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.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.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: 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] , Statistics on independence cache: Total cache size (in pairs): 18, Positive cache size: 18, Positive conditional cache size: 18, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.2ms, 23 PlacesBefore, 21 PlacesAfterwards, 10 TransitionsBefore, 10 TransitionsAfterwards, 2 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.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] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.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] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.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] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.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.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: 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] , Statistics on independence cache: Total cache size (in pairs): 18, Positive cache size: 18, Positive conditional cache size: 18, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.0ms, 22 PlacesBefore, 0 PlacesAfterwards, 0 TransitionsBefore, 0 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.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] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.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] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.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] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.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.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: 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] , Statistics on independence cache: Total cache size (in pairs): 18, Positive cache size: 18, Positive conditional cache size: 18, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - PositiveResult [Line: 68]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 18.7ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 12547.5ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 3391.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 393.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 17 SDtfs, 32 SDslu, 0 SDs, 0 SdLazy, 110 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 241.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8249.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=62occurred in iteration=3, 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 18.7ms SsaConstructionTime, 337.6ms SatisfiabilityAnalysisTime, 8094.9ms InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 1730 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...