/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/match-symm.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 15:36:27,647 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 15:36:27,649 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 15:36:27,678 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 15:36:27,679 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 15:36:27,681 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 15:36:27,683 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 15:36:27,687 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 15:36:27,689 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 15:36:27,693 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 15:36:27,694 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 15:36:27,695 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 15:36:27,695 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 15:36:27,697 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 15:36:27,698 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 15:36:27,699 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 15:36:27,701 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 15:36:27,702 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 15:36:27,705 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 15:36:27,712 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 15:36:27,713 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 15:36:27,714 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 15:36:27,715 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 15:36:27,717 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 15:36:27,722 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-11 15:36:27,722 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-11 15:36:27,722 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-11 15:36:27,724 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-11 15:36:27,724 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-11 15:36:27,725 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-11 15:36:27,725 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-11 15:36:27,726 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-11 15:36:27,727 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-11 15:36:27,728 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-11 15:36:27,729 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-11 15:36:27,729 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-11 15:36:27,729 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-11 15:36:27,729 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-11 15:36:27,730 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 15:36:27,730 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 15:36:27,730 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 15:36:27,731 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf [2021-03-11 15:36:27,750 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 15:36:27,750 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 15:36:27,753 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 15:36:27,753 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 15:36:27,754 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 15:36:27,754 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 15:36:27,754 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 15:36:27,754 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 15:36:27,754 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 15:36:27,754 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 15:36:27,755 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 15:36:27,755 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 15:36:27,755 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 15:36:27,755 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 15:36:27,755 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 15:36:27,755 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 15:36:27,755 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 15:36:27,756 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 15:36:27,756 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 15:36:27,756 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 15:36:27,756 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 15:36:27,756 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 15:36:27,756 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 15:36:27,756 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 15:36:27,756 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 15:36:27,756 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 15:36:27,756 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 15:36:27,757 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-11 15:36:27,757 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 15:36:28,066 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 15:36:28,090 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 15:36:28,093 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 15:36:28,094 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-11 15:36:28,095 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-11 15:36:28,096 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/match-symm.wvr.bpl [2021-03-11 15:36:28,096 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/match-symm.wvr.bpl' [2021-03-11 15:36:28,243 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 15:36:28,248 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-11 15:36:28,249 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 15:36:28,249 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 15:36:28,249 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 15:36:28,259 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "match-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 03:36:28" (1/1) ... [2021-03-11 15:36:28,265 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "match-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 03:36:28" (1/1) ... [2021-03-11 15:36:28,272 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 15:36:28,273 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 15:36:28,273 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 15:36:28,273 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 15:36:28,278 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "match-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 03:36:28" (1/1) ... [2021-03-11 15:36:28,279 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "match-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 03:36:28" (1/1) ... [2021-03-11 15:36:28,280 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "match-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 03:36:28" (1/1) ... [2021-03-11 15:36:28,280 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "match-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 03:36:28" (1/1) ... [2021-03-11 15:36:28,283 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "match-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 03:36:28" (1/1) ... [2021-03-11 15:36:28,285 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "match-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 03:36:28" (1/1) ... [2021-03-11 15:36:28,285 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "match-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 03:36:28" (1/1) ... [2021-03-11 15:36:28,287 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 15:36:28,287 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 15:36:28,288 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 15:36:28,288 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 15:36:28,290 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "match-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 03:36:28" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 15:36:28,337 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-03-11 15:36:28,337 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-11 15:36:28,337 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-11 15:36:28,337 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-03-11 15:36:28,337 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-11 15:36:28,338 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-11 15:36:28,338 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-11 15:36:28,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 15:36:28,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 15:36:28,339 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 15:36:28,460 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 15:36:28,460 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-11 15:36:28,462 INFO L202 PluginConnector]: Adding new model match-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 03:36:28 BoogieIcfgContainer [2021-03-11 15:36:28,463 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 15:36:28,466 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 15:36:28,466 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 15:36:28,468 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 15:36:28,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "match-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 03:36:28" (1/2) ... [2021-03-11 15:36:28,469 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cce277b and model type match-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 03:36:28, skipping insertion in model container [2021-03-11 15:36:28,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "match-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 03:36:28" (2/2) ... [2021-03-11 15:36:28,470 INFO L111 eAbstractionObserver]: Analyzing ICFG match-symm.wvr.bpl [2021-03-11 15:36:28,476 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-11 15:36:28,477 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 15:36:28,479 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 15:36:28,479 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 15:36:28,531 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-03-11 15:36:28,542 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-03-11 15:36:28,568 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 15:36:28,569 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-11 15:36:28,569 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 15:36:28,569 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 15:36:28,569 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 15:36:28,569 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 15:36:28,569 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 15:36:28,569 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 15:36:28,576 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-11 15:36:28,583 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 21 places, 14 transitions, 44 flow [2021-03-11 15:36:28,586 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 21 places, 14 transitions, 44 flow [2021-03-11 15:36:28,587 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 21 places, 14 transitions, 44 flow [2021-03-11 15:36:28,609 INFO L129 PetriNetUnfolder]: 0/12 cut-off events. [2021-03-11 15:36:28,609 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-11 15:36:28,611 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21 conditions, 12 events. 0/12 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 6 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. [2021-03-11 15:36:28,612 INFO L116 LiptonReduction]: Number of co-enabled transitions 16 [2021-03-11 15:36:28,732 INFO L131 LiptonReduction]: Checked pairs total: 14 [2021-03-11 15:36:28,733 INFO L133 LiptonReduction]: Total number of compositions: 5 [2021-03-11 15:36:28,754 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 17 places, 10 transitions, 36 flow [2021-03-11 15:36:28,760 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 12 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 15:36:28,761 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 15:36:28,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-03-11 15:36:28,765 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 15:36:28,766 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-03-11 15:36:28,766 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 15:36:28,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 15:36:28,770 INFO L82 PathProgramCache]: Analyzing trace with hash -1552715584, now seen corresponding path program 1 times [2021-03-11 15:36:28,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 15:36:28,776 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039173728] [2021-03-11 15:36:28,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 15:36:28,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 15:36:28,959 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 15:36:28,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 15:36:29,089 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 283 DAG size of output: 63 [2021-03-11 15:36:29,096 INFO L142 QuantifierPusher]: treesize reduction 13494, result has 1.8 percent of original size [2021-03-11 15:36:29,101 INFO L147 QuantifierPusher]: treesize reduction 3, result has 98.8 percent of original size 240 [2021-03-11 15:36:29,254 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 37 [2021-03-11 15:36:29,261 INFO L142 QuantifierPusher]: treesize reduction 37, result has 46.4 percent of original size [2021-03-11 15:36:29,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-11 15:36:29,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 15:36:29,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039173728] [2021-03-11 15:36:29,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 15:36:29,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 15:36:29,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465812047] [2021-03-11 15:36:29,289 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 15:36:29,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 15:36:29,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 15:36:29,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 15:36:29,298 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 15:36:29,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 15:36:29,377 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2021-03-11 15:36:29,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 15:36:29,378 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-03-11 15:36:29,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 15:36:29,383 INFO L225 Difference]: With dead ends: 14 [2021-03-11 15:36:29,383 INFO L226 Difference]: Without dead ends: 8 [2021-03-11 15:36:29,384 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 219.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-11 15:36:29,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-03-11 15:36:29,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-03-11 15:36:29,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.0) internal successors, (7), 7 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 15:36:29,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 7 transitions. [2021-03-11 15:36:29,413 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 7 transitions. Word has length 7 [2021-03-11 15:36:29,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 15:36:29,413 INFO L480 AbstractCegarLoop]: Abstraction has 8 states and 7 transitions. [2021-03-11 15:36:29,413 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 15:36:29,413 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 7 transitions. [2021-03-11 15:36:29,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-03-11 15:36:29,414 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 15:36:29,414 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-03-11 15:36:29,414 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 15:36:29,414 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 15:36:29,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 15:36:29,415 INFO L82 PathProgramCache]: Analyzing trace with hash -1662529054, now seen corresponding path program 2 times [2021-03-11 15:36:29,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 15:36:29,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945780620] [2021-03-11 15:36:29,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 15:36:29,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 15:36:29,496 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 15:36:29,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 15:36:29,512 INFO L142 QuantifierPusher]: treesize reduction 1354, result has 11.6 percent of original size [2021-03-11 15:36:29,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 177 [2021-03-11 15:36:29,643 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 39 [2021-03-11 15:36:29,647 INFO L142 QuantifierPusher]: treesize reduction 23, result has 58.2 percent of original size [2021-03-11 15:36:29,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-11 15:36:29,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 15:36:29,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945780620] [2021-03-11 15:36:29,663 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 15:36:29,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 15:36:29,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453081092] [2021-03-11 15:36:29,666 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 15:36:29,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 15:36:29,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 15:36:29,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 15:36:29,669 INFO L87 Difference]: Start difference. First operand 8 states and 7 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 15:36:29,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 15:36:29,722 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2021-03-11 15:36:29,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 15:36:29,723 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-03-11 15:36:29,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 15:36:29,723 INFO L225 Difference]: With dead ends: 7 [2021-03-11 15:36:29,723 INFO L226 Difference]: Without dead ends: 0 [2021-03-11 15:36:29,727 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 190.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-11 15:36:29,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-03-11 15:36:29,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-03-11 15:36:29,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 15:36:29,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-03-11 15:36:29,728 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2021-03-11 15:36:29,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 15:36:29,729 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-03-11 15:36:29,729 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 15:36:29,729 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-03-11 15:36:29,729 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-03-11 15:36:29,729 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 15:36:29,733 INFO L202 PluginConnector]: Adding new model match-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 03:36:29 BasicIcfg [2021-03-11 15:36:29,733 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 15:36:29,734 INFO L168 Benchmark]: Toolchain (without parser) took 1488.48 ms. Allocated memory is still 383.8 MB. Free memory was 363.7 MB in the beginning and 310.2 MB in the end (delta: 53.4 MB). Peak memory consumption was 53.3 MB. Max. memory is 16.0 GB. [2021-03-11 15:36:29,734 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.13 ms. Allocated memory is still 383.8 MB. Free memory is still 364.8 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 15:36:29,736 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.97 ms. Allocated memory is still 383.8 MB. Free memory was 363.2 MB in the beginning and 361.8 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 15:36:29,736 INFO L168 Benchmark]: Boogie Preprocessor took 14.16 ms. Allocated memory is still 383.8 MB. Free memory was 361.8 MB in the beginning and 360.9 MB in the end (delta: 913.3 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 15:36:29,737 INFO L168 Benchmark]: RCFGBuilder took 175.67 ms. Allocated memory is still 383.8 MB. Free memory was 360.7 MB in the beginning and 351.2 MB in the end (delta: 9.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. [2021-03-11 15:36:29,741 INFO L168 Benchmark]: TraceAbstraction took 1267.09 ms. Allocated memory is still 383.8 MB. Free memory was 350.8 MB in the beginning and 310.2 MB in the end (delta: 40.6 MB). Peak memory consumption was 38.6 MB. Max. memory is 16.0 GB. [2021-03-11 15:36:29,743 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.13 ms. Allocated memory is still 383.8 MB. Free memory is still 364.8 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 22.97 ms. Allocated memory is still 383.8 MB. Free memory was 363.2 MB in the beginning and 361.8 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 14.16 ms. Allocated memory is still 383.8 MB. Free memory was 361.8 MB in the beginning and 360.9 MB in the end (delta: 913.3 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 175.67 ms. Allocated memory is still 383.8 MB. Free memory was 360.7 MB in the beginning and 351.2 MB in the end (delta: 9.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1267.09 ms. Allocated memory is still 383.8 MB. Free memory was 350.8 MB in the beginning and 310.2 MB in the end (delta: 40.6 MB). Peak memory consumption was 38.6 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 147.2ms, 21 PlacesBefore, 17 PlacesAfterwards, 14 TransitionsBefore, 10 TransitionsAfterwards, 16 CoEnabledTransitionPairs, 2 FixpointIterations, 3 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 5 TotalNumberOfCompositions, 14 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 14, positive: 14, positive conditional: 0, positive unconditional: 14, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 10, positive: 10, positive conditional: 0, positive unconditional: 10, 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: 10, positive: 10, positive conditional: 0, positive unconditional: 10, 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: 14, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 10, unknown conditional: 0, unknown unconditional: 10] , Statistics on independence cache: Total cache size (in pairs): 4, Positive cache size: 4, Positive conditional cache size: 0, Positive unconditional cache size: 4, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - PositiveResult [Line: 38]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 15 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1163.1ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 5.9ms, AutomataDifference: 153.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 190.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 13 SDtfs, 8 SDslu, 11 SDs, 0 SdLazy, 8 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 15.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 410.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred 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: 22.3ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 11.2ms SsaConstructionTime, 63.7ms SatisfiabilityAnalysisTime, 635.0ms InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 509 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...