/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/sre-trans.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-26 05:03:36,144 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-26 05:03:36,146 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-26 05:03:36,170 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-26 05:03:36,171 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-26 05:03:36,172 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-26 05:03:36,173 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-26 05:03:36,175 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-26 05:03:36,176 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-26 05:03:36,177 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-26 05:03:36,178 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-26 05:03:36,179 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-26 05:03:36,179 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-26 05:03:36,180 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-26 05:03:36,181 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-26 05:03:36,182 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-26 05:03:36,183 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-26 05:03:36,184 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-26 05:03:36,185 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-26 05:03:36,187 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-26 05:03:36,188 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-26 05:03:36,192 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-26 05:03:36,193 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-26 05:03:36,194 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-26 05:03:36,196 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-26 05:03:36,196 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-26 05:03:36,196 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-26 05:03:36,197 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-26 05:03:36,197 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-26 05:03:36,198 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-26 05:03:36,198 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-26 05:03:36,199 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-26 05:03:36,200 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-26 05:03:36,200 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-26 05:03:36,201 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-26 05:03:36,201 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-26 05:03:36,202 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-26 05:03:36,202 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-26 05:03:36,202 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-26 05:03:36,203 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-26 05:03:36,204 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-26 05:03:36,205 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 [2021-03-26 05:03:36,234 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-26 05:03:36,234 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-26 05:03:36,236 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-26 05:03:36,236 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-26 05:03:36,236 INFO L138 SettingsManager]: * Use SBE=true [2021-03-26 05:03:36,236 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-26 05:03:36,236 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-26 05:03:36,237 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-26 05:03:36,237 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-26 05:03:36,237 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-26 05:03:36,237 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-26 05:03:36,237 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-26 05:03:36,237 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-26 05:03:36,238 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-26 05:03:36,238 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-26 05:03:36,238 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-26 05:03:36,238 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-26 05:03:36,238 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-26 05:03:36,238 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-26 05:03:36,239 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-26 05:03:36,239 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-26 05:03:36,239 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-26 05:03:36,239 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-26 05:03:36,239 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-26 05:03:36,239 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-26 05:03:36,240 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-26 05:03:36,240 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-26 05:03:36,240 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES [2021-03-26 05:03:36,240 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-26 05:03:36,240 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-26 05:03:36,240 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-26 05:03:36,547 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-26 05:03:36,576 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-26 05:03:36,578 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-26 05:03:36,579 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-26 05:03:36,580 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-26 05:03:36,582 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/sre-trans.wvr.bpl [2021-03-26 05:03:36,582 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/sre-trans.wvr.bpl' [2021-03-26 05:03:36,614 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-26 05:03:36,616 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-26 05:03:36,618 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-26 05:03:36,618 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-26 05:03:36,618 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-26 05:03:36,630 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "sre-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 05:03:36" (1/1) ... [2021-03-26 05:03:36,637 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "sre-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 05:03:36" (1/1) ... [2021-03-26 05:03:36,645 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-26 05:03:36,647 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-26 05:03:36,647 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-26 05:03:36,647 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-26 05:03:36,654 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "sre-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 05:03:36" (1/1) ... [2021-03-26 05:03:36,654 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "sre-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 05:03:36" (1/1) ... [2021-03-26 05:03:36,655 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "sre-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 05:03:36" (1/1) ... [2021-03-26 05:03:36,656 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "sre-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 05:03:36" (1/1) ... [2021-03-26 05:03:36,659 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "sre-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 05:03:36" (1/1) ... [2021-03-26 05:03:36,660 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "sre-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 05:03:36" (1/1) ... [2021-03-26 05:03:36,661 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "sre-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 05:03:36" (1/1) ... [2021-03-26 05:03:36,662 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-26 05:03:36,664 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-26 05:03:36,664 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-26 05:03:36,664 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-26 05:03:36,665 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "sre-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 05:03:36" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-26 05:03:36,738 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-03-26 05:03:36,739 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-26 05:03:36,740 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-26 05:03:36,740 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-03-26 05:03:36,740 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-26 05:03:36,740 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-26 05:03:36,740 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-26 05:03:36,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-26 05:03:36,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-26 05:03:36,741 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-03-26 05:03:36,741 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-03-26 05:03:36,741 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-03-26 05:03:36,742 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-26 05:03:36,886 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-26 05:03:36,887 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-26 05:03:36,889 INFO L202 PluginConnector]: Adding new model sre-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 05:03:36 BoogieIcfgContainer [2021-03-26 05:03:36,889 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-26 05:03:36,891 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-26 05:03:36,892 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-26 05:03:36,894 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-26 05:03:36,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "sre-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 05:03:36" (1/2) ... [2021-03-26 05:03:36,896 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b32c8c4 and model type sre-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.03 05:03:36, skipping insertion in model container [2021-03-26 05:03:36,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "sre-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 05:03:36" (2/2) ... [2021-03-26 05:03:36,897 INFO L111 eAbstractionObserver]: Analyzing ICFG sre-trans.wvr.bpl [2021-03-26 05:03:36,905 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-26 05:03:36,908 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-26 05:03:36,910 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-26 05:03:36,980 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-03-26 05:03:36,998 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-26 05:03:37,032 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 05:03:37,032 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 05:03:37,032 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 05:03:37,032 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 05:03:37,032 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 05:03:37,033 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 05:03:37,033 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 05:03:37,033 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 05:03:37,045 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 29 places, 19 transitions, 62 flow [2021-03-26 05:03:37,068 INFO L129 PetriNetUnfolder]: 0/16 cut-off events. [2021-03-26 05:03:37,068 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-26 05:03:37,070 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 16 events. 0/16 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 15 event pairs, 0 based on Foata normal form. 0/15 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-26 05:03:37,070 INFO L82 GeneralOperation]: Start removeDead. Operand has 29 places, 19 transitions, 62 flow [2021-03-26 05:03:37,073 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 24 places, 14 transitions, 46 flow [2021-03-26 05:03:37,074 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 05:03:37,104 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 24 places, 14 transitions, 46 flow [2021-03-26 05:03:37,106 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 24 places, 14 transitions, 46 flow [2021-03-26 05:03:37,107 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 24 places, 14 transitions, 46 flow [2021-03-26 05:03:37,111 INFO L129 PetriNetUnfolder]: 0/14 cut-off events. [2021-03-26 05:03:37,111 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-26 05:03:37,111 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 10 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. [2021-03-26 05:03:37,114 INFO L142 LiptonReduction]: Number of co-enabled transitions 48 [2021-03-26 05:03:37,206 INFO L154 LiptonReduction]: Checked pairs total: 18 [2021-03-26 05:03:37,206 INFO L156 LiptonReduction]: Total number of compositions: 4 [2021-03-26 05:03:37,208 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 135 [2021-03-26 05:03:37,229 INFO L129 PetriNetUnfolder]: 0/9 cut-off events. [2021-03-26 05:03:37,230 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-26 05:03:37,230 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 05:03:37,230 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 05:03:37,231 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 05:03:37,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 05:03:37,240 INFO L82 PathProgramCache]: Analyzing trace with hash -730943987, now seen corresponding path program 1 times [2021-03-26 05:03:37,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 05:03:37,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631696886] [2021-03-26 05:03:37,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 05:03:37,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 05:03:37,384 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 05:03:37,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 05:03:37,411 INFO L142 QuantifierPusher]: treesize reduction 100, result has 24.2 percent of original size [2021-03-26 05:03:37,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-26 05:03:37,474 INFO L142 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-03-26 05:03:37,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 05:03:37,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 05:03:37,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631696886] [2021-03-26 05:03:37,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 05:03:37,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 05:03:37,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506025180] [2021-03-26 05:03:37,493 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 05:03:37,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 05:03:37,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 05:03:37,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-26 05:03:37,505 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 23 [2021-03-26 05:03:37,507 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 10 transitions, 38 flow. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 05:03:37,507 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 05:03:37,507 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 23 [2021-03-26 05:03:37,508 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 05:03:37,595 INFO L129 PetriNetUnfolder]: 4/27 cut-off events. [2021-03-26 05:03:37,596 INFO L130 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2021-03-26 05:03:37,597 INFO L84 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 27 events. 4/27 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 72 event pairs, 1 based on Foata normal form. 1/26 useless extension candidates. Maximal degree in co-relation 42. Up to 7 conditions per place. [2021-03-26 05:03:37,598 INFO L132 encePairwiseOnDemand]: 20/23 looper letters, 4 selfloop transitions, 1 changer transitions 2/13 dead transitions. [2021-03-26 05:03:37,598 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 13 transitions, 58 flow [2021-03-26 05:03:37,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-26 05:03:37,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-26 05:03:37,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 64 transitions. [2021-03-26 05:03:37,609 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6956521739130435 [2021-03-26 05:03:37,610 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 64 transitions. [2021-03-26 05:03:37,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 64 transitions. [2021-03-26 05:03:37,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 05:03:37,613 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 64 transitions. [2021-03-26 05:03:37,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 05:03:37,619 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 05:03:37,620 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 05:03:37,621 INFO L185 Difference]: Start difference. First operand has 20 places, 10 transitions, 38 flow. Second operand 4 states and 64 transitions. [2021-03-26 05:03:37,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 13 transitions, 58 flow [2021-03-26 05:03:37,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 13 transitions, 46 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-03-26 05:03:37,629 INFO L241 Difference]: Finished difference. Result has 19 places, 10 transitions, 33 flow [2021-03-26 05:03:37,630 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=26, PETRI_DIFFERENCE_MINUEND_PLACES=14, 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=4, PETRI_FLOW=33, PETRI_PLACES=19, PETRI_TRANSITIONS=10} [2021-03-26 05:03:37,631 INFO L343 CegarLoopForPetriNet]: 20 programPoint places, -1 predicate places. [2021-03-26 05:03:37,631 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 05:03:37,631 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 19 places, 10 transitions, 33 flow [2021-03-26 05:03:37,633 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 19 places, 10 transitions, 33 flow [2021-03-26 05:03:37,633 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 18 places, 10 transitions, 33 flow [2021-03-26 05:03:37,641 INFO L129 PetriNetUnfolder]: 0/11 cut-off events. [2021-03-26 05:03:37,642 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-26 05:03:37,642 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22 conditions, 11 events. 0/11 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 7 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. [2021-03-26 05:03:37,642 INFO L142 LiptonReduction]: Number of co-enabled transitions 16 [2021-03-26 05:03:37,645 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 05:03:37,645 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 05:03:37,645 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 14 [2021-03-26 05:03:37,647 INFO L480 AbstractCegarLoop]: Abstraction has has 18 places, 10 transitions, 33 flow [2021-03-26 05:03:37,648 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 05:03:37,648 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 05:03:37,648 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 05:03:37,648 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-26 05:03:37,649 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 05:03:37,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 05:03:37,649 INFO L82 PathProgramCache]: Analyzing trace with hash 1921135629, now seen corresponding path program 2 times [2021-03-26 05:03:37,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 05:03:37,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365225333] [2021-03-26 05:03:37,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 05:03:37,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 05:03:37,724 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 05:03:37,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 05:03:37,725 INFO L142 QuantifierPusher]: treesize reduction 5, result has 54.5 percent of original size [2021-03-26 05:03:37,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-03-26 05:03:37,734 INFO L142 QuantifierPusher]: treesize reduction 10, result has 41.2 percent of original size [2021-03-26 05:03:37,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 05:03:37,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 05:03:37,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365225333] [2021-03-26 05:03:37,742 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 05:03:37,742 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 05:03:37,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860434697] [2021-03-26 05:03:37,743 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 05:03:37,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 05:03:37,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 05:03:37,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-26 05:03:37,745 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 23 [2021-03-26 05:03:37,746 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 10 transitions, 33 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 05:03:37,747 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 05:03:37,747 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 23 [2021-03-26 05:03:37,747 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 05:03:37,772 INFO L129 PetriNetUnfolder]: 0/10 cut-off events. [2021-03-26 05:03:37,773 INFO L130 PetriNetUnfolder]: For 8/10 co-relation queries the response was YES. [2021-03-26 05:03:37,773 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24 conditions, 10 events. 0/10 cut-off events. For 8/10 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 9 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. [2021-03-26 05:03:37,773 INFO L132 encePairwiseOnDemand]: 20/23 looper letters, 0 selfloop transitions, 0 changer transitions 10/10 dead transitions. [2021-03-26 05:03:37,778 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 10 transitions, 40 flow [2021-03-26 05:03:37,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-26 05:03:37,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-26 05:03:37,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 68 transitions. [2021-03-26 05:03:37,779 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7391304347826086 [2021-03-26 05:03:37,779 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 68 transitions. [2021-03-26 05:03:37,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 68 transitions. [2021-03-26 05:03:37,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 05:03:37,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 68 transitions. [2021-03-26 05:03:37,780 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 05:03:37,784 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 05:03:37,784 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 05:03:37,784 INFO L185 Difference]: Start difference. First operand has 18 places, 10 transitions, 33 flow. Second operand 4 states and 68 transitions. [2021-03-26 05:03:37,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 10 transitions, 40 flow [2021-03-26 05:03:37,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 10 transitions, 38 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 05:03:37,785 INFO L241 Difference]: Finished difference. Result has 19 places, 0 transitions, 0 flow [2021-03-26 05:03:37,786 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=16, 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=4, PETRI_FLOW=0, PETRI_PLACES=19, PETRI_TRANSITIONS=0} [2021-03-26 05:03:37,786 INFO L343 CegarLoopForPetriNet]: 20 programPoint places, -1 predicate places. [2021-03-26 05:03:37,786 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 05:03:37,786 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 19 places, 0 transitions, 0 flow [2021-03-26 05:03:37,787 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 19 places, 0 transitions, 0 flow [2021-03-26 05:03:37,787 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-26 05:03:37,787 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-26 05:03:37,788 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 05:03:37,788 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. [2021-03-26 05:03:37,788 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-26 05:03:37,788 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 05:03:37,788 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 05:03:37,788 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2 [2021-03-26 05:03:37,789 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-26 05:03:37,789 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 05:03:37,790 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-26 05:03:37,793 INFO L202 PluginConnector]: Adding new model sre-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.03 05:03:37 BasicIcfg [2021-03-26 05:03:37,793 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-26 05:03:37,795 INFO L168 Benchmark]: Toolchain (without parser) took 1177.68 ms. Allocated memory is still 339.7 MB. Free memory was 320.2 MB in the beginning and 274.0 MB in the end (delta: 46.1 MB). Peak memory consumption was 48.5 MB. Max. memory is 16.0 GB. [2021-03-26 05:03:37,796 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.48 ms. Allocated memory is still 339.7 MB. Free memory is still 321.2 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-26 05:03:37,799 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.83 ms. Allocated memory is still 339.7 MB. Free memory was 320.0 MB in the beginning and 318.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-26 05:03:37,800 INFO L168 Benchmark]: Boogie Preprocessor took 14.78 ms. Allocated memory is still 339.7 MB. Free memory was 318.5 MB in the beginning and 317.8 MB in the end (delta: 798.0 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-26 05:03:37,801 INFO L168 Benchmark]: RCFGBuilder took 225.07 ms. Allocated memory is still 339.7 MB. Free memory was 317.6 MB in the beginning and 307.9 MB in the end (delta: 9.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. [2021-03-26 05:03:37,801 INFO L168 Benchmark]: TraceAbstraction took 902.24 ms. Allocated memory is still 339.7 MB. Free memory was 307.6 MB in the beginning and 274.0 MB in the end (delta: 33.5 MB). Peak memory consumption was 38.0 MB. Max. memory is 16.0 GB. [2021-03-26 05:03:37,804 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 0.48 ms. Allocated memory is still 339.7 MB. Free memory is still 321.2 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 27.83 ms. Allocated memory is still 339.7 MB. Free memory was 320.0 MB in the beginning and 318.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 14.78 ms. Allocated memory is still 339.7 MB. Free memory was 318.5 MB in the beginning and 317.8 MB in the end (delta: 798.0 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 225.07 ms. Allocated memory is still 339.7 MB. Free memory was 317.6 MB in the beginning and 307.9 MB in the end (delta: 9.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. * TraceAbstraction took 902.24 ms. Allocated memory is still 339.7 MB. Free memory was 307.6 MB in the beginning and 274.0 MB in the end (delta: 33.5 MB). Peak memory consumption was 38.0 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 100.2ms, 24 PlacesBefore, 20 PlacesAfterwards, 14 TransitionsBefore, 10 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): 0, Positive cache size: 0, Positive conditional cache size: 0, 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: 12.4ms, 19 PlacesBefore, 18 PlacesAfterwards, 10 TransitionsBefore, 10 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): 0, Positive cache size: 0, Positive conditional cache size: 0, 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: 1.3ms, 19 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): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - PositiveResult [Line: 44]: 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: 4.3ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 762.0ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 172.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 192.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 5 SDtfs, 4 SDslu, 1 SDs, 0 SdLazy, 14 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 19.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 143.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=0, InterpolantAutomatonStates: 8, 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: 5.6ms SsaConstructionTime, 35.1ms SatisfiabilityAnalysisTime, 225.0ms InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 114 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...