/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/sre-trans.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 15:54:41,575 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 15:54:41,576 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 15:54:41,593 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 15:54:41,593 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 15:54:41,594 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 15:54:41,595 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 15:54:41,596 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 15:54:41,597 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 15:54:41,600 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 15:54:41,601 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 15:54:41,602 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 15:54:41,603 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 15:54:41,604 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 15:54:41,605 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 15:54:41,609 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 15:54:41,609 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 15:54:41,610 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 15:54:41,612 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 15:54:41,616 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 15:54:41,617 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 15:54:41,618 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 15:54:41,619 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 15:54:41,619 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 15:54:41,622 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-11 15:54:41,623 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-11 15:54:41,623 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-11 15:54:41,626 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-11 15:54:41,627 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-11 15:54:41,627 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-11 15:54:41,628 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-11 15:54:41,628 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-11 15:54:41,629 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-11 15:54:41,629 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-11 15:54:41,630 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-11 15:54:41,630 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-11 15:54:41,630 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-11 15:54:41,630 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-11 15:54:41,631 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 15:54:41,631 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 15:54:41,631 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 15:54:41,634 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf [2021-03-11 15:54:41,653 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 15:54:41,653 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 15:54:41,655 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 15:54:41,655 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 15:54:41,655 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 15:54:41,656 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 15:54:41,656 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 15:54:41,656 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 15:54:41,656 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 15:54:41,656 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 15:54:41,656 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 15:54:41,656 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 15:54:41,657 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 15:54:41,657 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 15:54:41,657 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 15:54:41,657 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 15:54:41,657 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 15:54:41,657 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 15:54:41,657 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 15:54:41,657 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 15:54:41,657 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 15:54:41,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 15:54:41,657 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 15:54:41,658 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 15:54:41,658 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 15:54:41,658 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 15:54:41,658 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 15:54:41,658 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-11 15:54:41,658 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 15:54:41,895 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 15:54:41,909 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 15:54:41,911 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 15:54:41,912 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-11 15:54:41,912 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-11 15:54:41,913 INFO L432 ainManager$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 [2021-03-11 15:54:41,913 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/sre-trans.wvr.bpl' [2021-03-11 15:54:41,948 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 15:54:41,952 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-11 15:54:41,953 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 15:54:41,953 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 15:54:41,953 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 15:54:41,964 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 11.03 03:54:41" (1/1) ... [2021-03-11 15:54:41,968 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 11.03 03:54:41" (1/1) ... [2021-03-11 15:54:41,974 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 15:54:41,975 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 15:54:41,975 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 15:54:41,975 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 15:54:41,980 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "sre-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 03:54:41" (1/1) ... [2021-03-11 15:54:41,980 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "sre-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 03:54:41" (1/1) ... [2021-03-11 15:54:41,981 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "sre-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 03:54:41" (1/1) ... [2021-03-11 15:54:41,981 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "sre-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 03:54:41" (1/1) ... [2021-03-11 15:54:41,983 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "sre-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 03:54:41" (1/1) ... [2021-03-11 15:54:41,984 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "sre-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 03:54:41" (1/1) ... [2021-03-11 15:54:41,985 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "sre-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 03:54:41" (1/1) ... [2021-03-11 15:54:41,985 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 15:54:41,986 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 15:54:41,986 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 15:54:41,986 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 15:54:41,987 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "sre-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 03:54:41" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 15:54:42,041 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-03-11 15:54:42,041 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-11 15:54:42,041 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-11 15:54:42,041 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-03-11 15:54:42,041 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-11 15:54:42,042 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-11 15:54:42,042 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-11 15:54:42,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 15:54:42,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 15:54:42,042 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-03-11 15:54:42,042 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-03-11 15:54:42,042 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-03-11 15:54:42,043 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 15:54:42,140 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 15:54:42,140 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-11 15:54:42,141 INFO L202 PluginConnector]: Adding new model sre-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 03:54:42 BoogieIcfgContainer [2021-03-11 15:54:42,141 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 15:54:42,143 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 15:54:42,143 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 15:54:42,144 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 15:54:42,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "sre-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 03:54:41" (1/2) ... [2021-03-11 15:54:42,145 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61c9681d and model type sre-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 03:54:42, skipping insertion in model container [2021-03-11 15:54:42,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "sre-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 03:54:42" (2/2) ... [2021-03-11 15:54:42,146 INFO L111 eAbstractionObserver]: Analyzing ICFG sre-trans.wvr.bpl [2021-03-11 15:54:42,152 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-11 15:54:42,152 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 15:54:42,155 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 15:54:42,155 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 15:54:42,187 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-03-11 15:54:42,197 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-11 15:54:42,208 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 15:54:42,209 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-11 15:54:42,209 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 15:54:42,209 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 15:54:42,209 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 15:54:42,209 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 15:54:42,209 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 15:54:42,209 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 15:54:42,216 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-11 15:54:42,222 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 29 places, 19 transitions, 62 flow [2021-03-11 15:54:42,224 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 29 places, 19 transitions, 62 flow [2021-03-11 15:54:42,225 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 29 places, 19 transitions, 62 flow [2021-03-11 15:54:42,243 INFO L129 PetriNetUnfolder]: 0/16 cut-off events. [2021-03-11 15:54:42,243 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-11 15:54:42,244 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 16 events. 0/16 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 15 event pairs, 0 based on Foata normal form. 0/15 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-11 15:54:42,245 INFO L116 LiptonReduction]: Number of co-enabled transitions 48 [2021-03-11 15:54:42,310 INFO L131 LiptonReduction]: Checked pairs total: 60 [2021-03-11 15:54:42,310 INFO L133 LiptonReduction]: Total number of compositions: 6 [2021-03-11 15:54:42,315 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 24 places, 14 transitions, 52 flow [2021-03-11 15:54:42,320 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 24 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 15:54:42,321 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 15:54:42,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-03-11 15:54:42,324 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 15:54:42,324 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 15:54:42,324 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 15:54:42,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 15:54:42,327 INFO L82 PathProgramCache]: Analyzing trace with hash -1684442003, now seen corresponding path program 1 times [2021-03-11 15:54:42,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 15:54:42,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922452709] [2021-03-11 15:54:42,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 15:54:42,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 15:54:42,448 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 15:54:42,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 15:54:42,468 INFO L142 QuantifierPusher]: treesize reduction 158, result has 5.4 percent of original size [2021-03-11 15:54:42,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 15:54:42,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 15:54:42,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-11 15:54:42,503 INFO L142 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size [2021-03-11 15:54:42,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-11 15:54:42,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 15:54:42,525 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922452709] [2021-03-11 15:54:42,525 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 15:54:42,525 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 15:54:42,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915889728] [2021-03-11 15:54:42,528 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 15:54:42,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 15:54:42,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 15:54:42,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-11 15:54:42,538 INFO L87 Difference]: Start difference. First operand has 24 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 15:54:42,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 15:54:42,621 INFO L93 Difference]: Finished difference Result 34 states and 47 transitions. [2021-03-11 15:54:42,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 15:54:42,622 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-03-11 15:54:42,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 15:54:42,627 INFO L225 Difference]: With dead ends: 34 [2021-03-11 15:54:42,627 INFO L226 Difference]: Without dead ends: 28 [2021-03-11 15:54:42,628 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 81.5ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 15:54:42,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-03-11 15:54:42,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 23. [2021-03-11 15:54:42,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 15:54:42,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 35 transitions. [2021-03-11 15:54:42,653 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 35 transitions. Word has length 10 [2021-03-11 15:54:42,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 15:54:42,653 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 35 transitions. [2021-03-11 15:54:42,653 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 15:54:42,653 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 35 transitions. [2021-03-11 15:54:42,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-03-11 15:54:42,654 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 15:54:42,654 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 15:54:42,654 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 15:54:42,654 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 15:54:42,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 15:54:42,656 INFO L82 PathProgramCache]: Analyzing trace with hash -1796158253, now seen corresponding path program 2 times [2021-03-11 15:54:42,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 15:54:42,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262420849] [2021-03-11 15:54:42,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 15:54:42,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 15:54:42,726 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 15:54:42,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 15:54:42,742 INFO L142 QuantifierPusher]: treesize reduction 60, result has 70.3 percent of original size [2021-03-11 15:54:42,748 INFO L147 QuantifierPusher]: treesize reduction 30, result has 78.9 percent of original size 112 [2021-03-11 15:54:42,883 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 22 [2021-03-11 15:54:42,887 INFO L142 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-03-11 15:54:42,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 15:54:42,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 15:54:42,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262420849] [2021-03-11 15:54:42,894 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 15:54:42,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 15:54:42,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650026484] [2021-03-11 15:54:42,896 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 15:54:42,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 15:54:42,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 15:54:42,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 15:54:42,896 INFO L87 Difference]: Start difference. First operand 23 states and 35 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 15:54:42,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 15:54:42,938 INFO L93 Difference]: Finished difference Result 31 states and 44 transitions. [2021-03-11 15:54:42,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 15:54:42,939 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-03-11 15:54:42,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 15:54:42,940 INFO L225 Difference]: With dead ends: 31 [2021-03-11 15:54:42,940 INFO L226 Difference]: Without dead ends: 17 [2021-03-11 15:54:42,941 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 169.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-11 15:54:42,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-03-11 15:54:42,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-03-11 15:54:42,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 15:54:42,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 22 transitions. [2021-03-11 15:54:42,946 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 22 transitions. Word has length 10 [2021-03-11 15:54:42,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 15:54:42,946 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 22 transitions. [2021-03-11 15:54:42,946 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 15:54:42,946 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 22 transitions. [2021-03-11 15:54:42,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-03-11 15:54:42,947 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 15:54:42,947 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 15:54:42,947 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 15:54:42,947 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 15:54:42,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 15:54:42,948 INFO L82 PathProgramCache]: Analyzing trace with hash 1007773361, now seen corresponding path program 3 times [2021-03-11 15:54:42,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 15:54:42,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520590777] [2021-03-11 15:54:42,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 15:54:42,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 15:54:42,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 15:54:42,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 15:54:42,988 INFO L142 QuantifierPusher]: treesize reduction 78, result has 8.2 percent of original size [2021-03-11 15:54:42,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 15:54:43,000 INFO L142 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size [2021-03-11 15:54:43,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-11 15:54:43,010 INFO L142 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size [2021-03-11 15:54:43,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-11 15:54:43,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 15:54:43,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520590777] [2021-03-11 15:54:43,018 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 15:54:43,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 15:54:43,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122567907] [2021-03-11 15:54:43,019 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 15:54:43,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 15:54:43,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 15:54:43,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-11 15:54:43,021 INFO L87 Difference]: Start difference. First operand 17 states and 22 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 15:54:43,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 15:54:43,075 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2021-03-11 15:54:43,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 15:54:43,076 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-03-11 15:54:43,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 15:54:43,076 INFO L225 Difference]: With dead ends: 22 [2021-03-11 15:54:43,077 INFO L226 Difference]: Without dead ends: 16 [2021-03-11 15:54:43,077 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 54.3ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 15:54:43,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-03-11 15:54:43,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-03-11 15:54:43,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 15:54:43,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2021-03-11 15:54:43,080 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 10 [2021-03-11 15:54:43,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 15:54:43,080 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2021-03-11 15:54:43,080 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 15:54:43,080 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2021-03-11 15:54:43,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-03-11 15:54:43,080 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 15:54:43,080 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 15:54:43,081 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 15:54:43,081 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 15:54:43,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 15:54:43,081 INFO L82 PathProgramCache]: Analyzing trace with hash 148898831, now seen corresponding path program 4 times [2021-03-11 15:54:43,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 15:54:43,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130341552] [2021-03-11 15:54:43,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 15:54:43,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 15:54:43,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 15:54:43,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 15:54:43,124 INFO L142 QuantifierPusher]: treesize reduction 64, result has 33.3 percent of original size [2021-03-11 15:54:43,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-11 15:54:43,151 INFO L142 QuantifierPusher]: treesize reduction 5, result has 50.0 percent of original size [2021-03-11 15:54:43,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 15:54:43,157 INFO L142 QuantifierPusher]: treesize reduction 10, result has 41.2 percent of original size [2021-03-11 15:54:43,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 15:54:43,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 15:54:43,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130341552] [2021-03-11 15:54:43,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 15:54:43,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 15:54:43,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156054474] [2021-03-11 15:54:43,164 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 15:54:43,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 15:54:43,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 15:54:43,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-11 15:54:43,165 INFO L87 Difference]: Start difference. First operand 16 states and 20 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 15:54:43,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 15:54:43,195 INFO L93 Difference]: Finished difference Result 15 states and 19 transitions. [2021-03-11 15:54:43,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 15:54:43,195 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-03-11 15:54:43,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 15:54:43,196 INFO L225 Difference]: With dead ends: 15 [2021-03-11 15:54:43,196 INFO L226 Difference]: Without dead ends: 0 [2021-03-11 15:54:43,196 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 58.1ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-03-11 15:54:43,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-03-11 15:54:43,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-03-11 15:54:43,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 15:54:43,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-03-11 15:54:43,196 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2021-03-11 15:54:43,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 15:54:43,197 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-03-11 15:54:43,197 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 15:54:43,197 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-03-11 15:54:43,197 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-03-11 15:54:43,197 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 15:54:43,199 INFO L202 PluginConnector]: Adding new model sre-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 03:54:43 BasicIcfg [2021-03-11 15:54:43,199 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 15:54:43,201 INFO L168 Benchmark]: Toolchain (without parser) took 1250.57 ms. Allocated memory is still 381.7 MB. Free memory was 361.7 MB in the beginning and 252.0 MB in the end (delta: 109.6 MB). Peak memory consumption was 111.1 MB. Max. memory is 16.0 GB. [2021-03-11 15:54:43,204 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.10 ms. Allocated memory is still 381.7 MB. Free memory was 362.7 MB in the beginning and 362.7 MB in the end (delta: 83.3 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 15:54:43,204 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.28 ms. Allocated memory is still 381.7 MB. Free memory was 361.1 MB in the beginning and 359.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 15:54:43,205 INFO L168 Benchmark]: Boogie Preprocessor took 10.95 ms. Allocated memory is still 381.7 MB. Free memory was 359.6 MB in the beginning and 358.8 MB in the end (delta: 827.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 15:54:43,205 INFO L168 Benchmark]: RCFGBuilder took 155.19 ms. Allocated memory is still 381.7 MB. Free memory was 358.7 MB in the beginning and 349.1 MB in the end (delta: 9.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. [2021-03-11 15:54:43,205 INFO L168 Benchmark]: TraceAbstraction took 1057.00 ms. Allocated memory is still 381.7 MB. Free memory was 348.6 MB in the beginning and 252.0 MB in the end (delta: 96.6 MB). Peak memory consumption was 98.5 MB. Max. memory is 16.0 GB. [2021-03-11 15:54:43,209 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 0.10 ms. Allocated memory is still 381.7 MB. Free memory was 362.7 MB in the beginning and 362.7 MB in the end (delta: 83.3 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 21.28 ms. Allocated memory is still 381.7 MB. Free memory was 361.1 MB in the beginning and 359.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 10.95 ms. Allocated memory is still 381.7 MB. Free memory was 359.6 MB in the beginning and 358.8 MB in the end (delta: 827.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 155.19 ms. Allocated memory is still 381.7 MB. Free memory was 358.7 MB in the beginning and 349.1 MB in the end (delta: 9.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1057.00 ms. Allocated memory is still 381.7 MB. Free memory was 348.6 MB in the beginning and 252.0 MB in the end (delta: 96.6 MB). Peak memory consumption was 98.5 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 86.3ms, 29 PlacesBefore, 24 PlacesAfterwards, 19 TransitionsBefore, 14 TransitionsAfterwards, 48 CoEnabledTransitionPairs, 2 FixpointIterations, 3 TrivialSequentialCompositions, 3 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 6 TotalNumberOfCompositions, 60 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 60, positive: 60, positive conditional: 0, positive unconditional: 60, 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: 36, positive: 36, positive conditional: 0, positive unconditional: 36, 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: 36, positive: 36, positive conditional: 0, positive unconditional: 36, 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: 60, positive: 24, positive conditional: 0, positive unconditional: 24, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 36, unknown conditional: 0, unknown unconditional: 36] , Statistics on independence cache: Total cache size (in pairs): 12, Positive cache size: 12, Positive conditional cache size: 0, Positive unconditional cache size: 12, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - PositiveResult [Line: 44]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 990.2ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 5.3ms, AutomataDifference: 234.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 110.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 47 SDtfs, 48 SDslu, 64 SDs, 0 SdLazy, 47 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 37.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 363.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 23.1ms AutomataMinimizationTime, 4 MinimizatonAttempts, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 7.7ms SsaConstructionTime, 58.6ms SatisfiabilityAnalysisTime, 464.4ms InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 403 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...