/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/file-item-subst.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 15:36:04,723 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 15:36:04,725 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 15:36:04,759 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 15:36:04,760 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 15:36:04,761 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 15:36:04,762 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 15:36:04,763 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 15:36:04,764 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 15:36:04,765 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 15:36:04,766 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 15:36:04,767 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 15:36:04,767 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 15:36:04,768 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 15:36:04,769 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 15:36:04,770 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 15:36:04,770 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 15:36:04,775 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 15:36:04,777 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 15:36:04,778 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 15:36:04,779 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 15:36:04,784 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 15:36:04,785 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 15:36:04,786 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 15:36:04,788 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-11 15:36:04,790 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-11 15:36:04,791 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-11 15:36:04,792 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-11 15:36:04,792 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-11 15:36:04,793 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-11 15:36:04,793 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-11 15:36:04,794 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-11 15:36:04,794 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-11 15:36:04,794 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 15:36:04,800 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 15:36:04,800 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 15:36:04,801 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 15:36:04,819 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 15:36:04,819 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 15:36:04,823 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 15:36:04,823 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 15:36:04,823 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 15:36:04,824 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 15:36:04,824 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 15:36:04,824 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 15:36:04,824 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 15:36:04,824 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 15:36:04,825 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 15:36:04,825 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 15:36:04,825 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 15:36:04,825 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 15:36:04,825 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 15:36:04,826 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 15:36:04,826 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 15:36:04,826 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 15:36:04,826 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 15:36:04,826 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 15:36:04,826 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 15:36:04,826 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 15:36:04,826 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 15:36:04,827 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 15:36:04,827 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 15:36:04,827 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 15:36:04,827 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 15:36:04,827 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-11 15:36:04,827 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 15:36:05,118 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 15:36:05,141 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 15:36:05,143 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 15:36:05,144 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-11 15:36:05,150 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-11 15:36:05,151 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/file-item-subst.wvr.bpl [2021-03-11 15:36:05,151 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/file-item-subst.wvr.bpl' [2021-03-11 15:36:05,198 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 15:36:05,203 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-11 15:36:05,205 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 15:36:05,205 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 15:36:05,205 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 15:36:05,216 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "file-item-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 03:36:05" (1/1) ... [2021-03-11 15:36:05,222 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "file-item-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 03:36:05" (1/1) ... [2021-03-11 15:36:05,231 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 15:36:05,232 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 15:36:05,233 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 15:36:05,233 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 15:36:05,239 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "file-item-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 03:36:05" (1/1) ... [2021-03-11 15:36:05,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "file-item-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 03:36:05" (1/1) ... [2021-03-11 15:36:05,241 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "file-item-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 03:36:05" (1/1) ... [2021-03-11 15:36:05,242 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "file-item-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 03:36:05" (1/1) ... [2021-03-11 15:36:05,246 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "file-item-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 03:36:05" (1/1) ... [2021-03-11 15:36:05,248 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "file-item-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 03:36:05" (1/1) ... [2021-03-11 15:36:05,248 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "file-item-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 03:36:05" (1/1) ... [2021-03-11 15:36:05,253 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 15:36:05,256 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 15:36:05,257 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 15:36:05,257 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 15:36:05,258 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "file-item-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 03:36:05" (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 15:36:05,342 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-03-11 15:36:05,342 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-11 15:36:05,342 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-11 15:36:05,343 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-03-11 15:36:05,344 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-11 15:36:05,344 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-11 15:36:05,344 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-11 15:36:05,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 15:36:05,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 15:36:05,344 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-03-11 15:36:05,345 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-03-11 15:36:05,345 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-03-11 15:36:05,345 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 15:36:05,534 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 15:36:05,534 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-11 15:36:05,535 INFO L202 PluginConnector]: Adding new model file-item-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 03:36:05 BoogieIcfgContainer [2021-03-11 15:36:05,535 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 15:36:05,536 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 15:36:05,537 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 15:36:05,539 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 15:36:05,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "file-item-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 03:36:05" (1/2) ... [2021-03-11 15:36:05,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@386c536a and model type file-item-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 03:36:05, skipping insertion in model container [2021-03-11 15:36:05,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "file-item-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 03:36:05" (2/2) ... [2021-03-11 15:36:05,541 INFO L111 eAbstractionObserver]: Analyzing ICFG file-item-subst.wvr.bpl [2021-03-11 15:36:05,548 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-11 15:36:05,548 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 15:36:05,552 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 15:36:05,553 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 15:36:05,628 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-03-11 15:36:05,640 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-11 15:36:05,681 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 15:36:05,681 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-11 15:36:05,681 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 15:36:05,681 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 15:36:05,681 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 15:36:05,681 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 15:36:05,681 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 15:36:05,681 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 15:36:05,690 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-11 15:36:05,697 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 29 places, 19 transitions, 62 flow [2021-03-11 15:36:05,708 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 29 places, 19 transitions, 62 flow [2021-03-11 15:36:05,709 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 29 places, 19 transitions, 62 flow [2021-03-11 15:36:05,740 INFO L129 PetriNetUnfolder]: 0/16 cut-off events. [2021-03-11 15:36:05,740 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-11 15:36:05,742 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 13 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 15:36:05,744 INFO L116 LiptonReduction]: Number of co-enabled transitions 48 [2021-03-11 15:36:06,014 INFO L131 LiptonReduction]: Checked pairs total: 48 [2021-03-11 15:36:06,015 INFO L133 LiptonReduction]: Total number of compositions: 6 [2021-03-11 15:36:06,024 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 24 places, 14 transitions, 52 flow [2021-03-11 15:36:06,031 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 15:36:06,033 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 15:36:06,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-03-11 15:36:06,040 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 15:36:06,040 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 15:36:06,040 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 15:36:06,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 15:36:06,046 INFO L82 PathProgramCache]: Analyzing trace with hash 807927935, now seen corresponding path program 1 times [2021-03-11 15:36:06,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 15:36:06,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88652861] [2021-03-11 15:36:06,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 15:36:06,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 15:36:06,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 15:36:06,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 15:36:06,323 INFO L142 QuantifierPusher]: treesize reduction 140, result has 31.4 percent of original size [2021-03-11 15:36:06,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-03-11 15:36:06,430 INFO L142 QuantifierPusher]: treesize reduction 100, result has 67.0 percent of original size [2021-03-11 15:36:06,438 INFO L147 QuantifierPusher]: treesize reduction 52, result has 74.4 percent of original size 151 [2021-03-11 15:36:06,677 WARN L205 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 50 [2021-03-11 15:36:06,709 INFO L142 QuantifierPusher]: treesize reduction 158, result has 46.1 percent of original size [2021-03-11 15:36:06,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 135 [2021-03-11 15:36:06,822 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 15:36:06,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88652861] [2021-03-11 15:36:06,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 15:36:06,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 15:36:06,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749701255] [2021-03-11 15:36:06,827 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 15:36:06,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 15:36:06,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 15:36:06,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-11 15:36:06,843 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 15:36:07,134 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2021-03-11 15:36:07,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 15:36:07,139 INFO L93 Difference]: Finished difference Result 36 states and 50 transitions. [2021-03-11 15:36:07,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 15:36:07,140 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 15:36:07,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 15:36:07,145 INFO L225 Difference]: With dead ends: 36 [2021-03-11 15:36:07,145 INFO L226 Difference]: Without dead ends: 28 [2021-03-11 15:36:07,146 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 660.3ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 15:36:07,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-03-11 15:36:07,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 23. [2021-03-11 15:36:07,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 22 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 15:36:07,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 34 transitions. [2021-03-11 15:36:07,200 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 34 transitions. Word has length 10 [2021-03-11 15:36:07,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 15:36:07,200 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 34 transitions. [2021-03-11 15:36:07,200 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 15:36:07,200 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 34 transitions. [2021-03-11 15:36:07,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-03-11 15:36:07,201 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 15:36:07,201 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 15:36:07,201 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 15:36:07,202 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 15:36:07,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 15:36:07,203 INFO L82 PathProgramCache]: Analyzing trace with hash 863933841, now seen corresponding path program 2 times [2021-03-11 15:36:07,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 15:36:07,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980208853] [2021-03-11 15:36:07,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 15:36:07,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 15:36:07,269 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 15:36:07,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 15:36:07,274 INFO L142 QuantifierPusher]: treesize reduction 228, result has 23.0 percent of original size [2021-03-11 15:36:07,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-03-11 15:36:07,366 INFO L142 QuantifierPusher]: treesize reduction 114, result has 56.8 percent of original size [2021-03-11 15:36:07,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 150 [2021-03-11 15:36:07,584 WARN L205 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 52 [2021-03-11 15:36:07,597 INFO L142 QuantifierPusher]: treesize reduction 160, result has 43.3 percent of original size [2021-03-11 15:36:07,602 INFO L147 QuantifierPusher]: treesize reduction 16, result has 86.9 percent of original size 106 [2021-03-11 15:36:07,651 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 15:36:07,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980208853] [2021-03-11 15:36:07,653 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 15:36:07,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 15:36:07,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463506869] [2021-03-11 15:36:07,655 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 15:36:07,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 15:36:07,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 15:36:07,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-11 15:36:07,657 INFO L87 Difference]: Start difference. First operand 23 states and 34 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 15:36:07,781 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2021-03-11 15:36:07,912 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2021-03-11 15:36:07,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 15:36:07,924 INFO L93 Difference]: Finished difference Result 34 states and 44 transitions. [2021-03-11 15:36:07,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 15:36:07,925 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 15:36:07,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 15:36:07,926 INFO L225 Difference]: With dead ends: 34 [2021-03-11 15:36:07,926 INFO L226 Difference]: Without dead ends: 24 [2021-03-11 15:36:07,926 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 567.8ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 15:36:07,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-03-11 15:36:07,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 19. [2021-03-11 15:36:07,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 15:36:07,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 26 transitions. [2021-03-11 15:36:07,929 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 26 transitions. Word has length 10 [2021-03-11 15:36:07,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 15:36:07,929 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 26 transitions. [2021-03-11 15:36:07,929 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 15:36:07,929 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 26 transitions. [2021-03-11 15:36:07,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-03-11 15:36:07,930 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 15:36:07,930 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 15:36:07,930 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 15:36:07,930 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 15:36:07,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 15:36:07,931 INFO L82 PathProgramCache]: Analyzing trace with hash -615082415, now seen corresponding path program 3 times [2021-03-11 15:36:07,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 15:36:07,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367879199] [2021-03-11 15:36:07,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 15:36:07,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 15:36:07,989 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 15:36:07,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 15:36:07,993 INFO L142 QuantifierPusher]: treesize reduction 216, result has 23.9 percent of original size [2021-03-11 15:36:07,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-03-11 15:36:08,039 INFO L142 QuantifierPusher]: treesize reduction 164, result has 45.9 percent of original size [2021-03-11 15:36:08,041 INFO L147 QuantifierPusher]: treesize reduction 7, result has 95.0 percent of original size 132 [2021-03-11 15:36:08,156 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 50 [2021-03-11 15:36:08,161 INFO L142 QuantifierPusher]: treesize reduction 88, result has 53.4 percent of original size [2021-03-11 15:36:08,164 INFO L147 QuantifierPusher]: treesize reduction 12, result has 88.1 percent of original size 89 [2021-03-11 15:36:08,192 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 15:36:08,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367879199] [2021-03-11 15:36:08,193 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 15:36:08,193 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 15:36:08,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221615455] [2021-03-11 15:36:08,193 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 15:36:08,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 15:36:08,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 15:36:08,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-11 15:36:08,194 INFO L87 Difference]: Start difference. First operand 19 states and 26 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 15:36:08,417 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-03-11 15:36:08,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 15:36:08,425 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions. [2021-03-11 15:36:08,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 15:36:08,426 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 15:36:08,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 15:36:08,426 INFO L225 Difference]: With dead ends: 28 [2021-03-11 15:36:08,427 INFO L226 Difference]: Without dead ends: 20 [2021-03-11 15:36:08,427 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 379.9ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 15:36:08,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-03-11 15:36:08,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 15. [2021-03-11 15:36:08,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 15:36:08,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2021-03-11 15:36:08,432 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 10 [2021-03-11 15:36:08,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 15:36:08,432 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 18 transitions. [2021-03-11 15:36:08,432 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 15:36:08,432 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2021-03-11 15:36:08,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-03-11 15:36:08,433 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 15:36:08,433 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 15:36:08,433 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 15:36:08,433 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 15:36:08,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 15:36:08,434 INFO L82 PathProgramCache]: Analyzing trace with hash 1076150307, now seen corresponding path program 4 times [2021-03-11 15:36:08,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 15:36:08,434 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348292916] [2021-03-11 15:36:08,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 15:36:08,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 15:36:08,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 15:36:08,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 15:36:08,535 INFO L142 QuantifierPusher]: treesize reduction 73, result has 52.9 percent of original size [2021-03-11 15:36:08,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-03-11 15:36:08,667 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2021-03-11 15:36:08,672 INFO L142 QuantifierPusher]: treesize reduction 142, result has 52.2 percent of original size [2021-03-11 15:36:08,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 155 [2021-03-11 15:36:08,855 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 47 [2021-03-11 15:36:08,868 INFO L142 QuantifierPusher]: treesize reduction 126, result has 42.5 percent of original size [2021-03-11 15:36:08,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-03-11 15:36:08,947 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 15:36:08,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348292916] [2021-03-11 15:36:08,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 15:36:08,948 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 15:36:08,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396769554] [2021-03-11 15:36:08,948 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 15:36:08,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 15:36:08,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 15:36:08,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-11 15:36:08,949 INFO L87 Difference]: Start difference. First operand 15 states and 18 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 15:36:09,270 WARN L205 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 73 [2021-03-11 15:36:09,607 WARN L205 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 82 [2021-03-11 15:36:09,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 15:36:09,615 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2021-03-11 15:36:09,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 15:36:09,615 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 15:36:09,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 15:36:09,615 INFO L225 Difference]: With dead ends: 20 [2021-03-11 15:36:09,616 INFO L226 Difference]: Without dead ends: 13 [2021-03-11 15:36:09,616 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1026.1ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 15:36:09,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-03-11 15:36:09,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-03-11 15:36:09,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 15:36:09,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2021-03-11 15:36:09,621 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 10 [2021-03-11 15:36:09,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 15:36:09,621 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2021-03-11 15:36:09,621 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 15:36:09,621 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2021-03-11 15:36:09,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-03-11 15:36:09,621 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 15:36:09,621 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 15:36:09,621 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 15:36:09,622 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 15:36:09,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 15:36:09,622 INFO L82 PathProgramCache]: Analyzing trace with hash -1482633903, now seen corresponding path program 5 times [2021-03-11 15:36:09,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 15:36:09,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636646438] [2021-03-11 15:36:09,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 15:36:09,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 15:36:09,668 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 15:36:09,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 15:36:09,671 INFO L142 QuantifierPusher]: treesize reduction 251, result has 25.5 percent of original size [2021-03-11 15:36:09,672 INFO L147 QuantifierPusher]: treesize reduction 14, result has 83.7 percent of original size 72 [2021-03-11 15:36:09,753 INFO L142 QuantifierPusher]: treesize reduction 445, result has 31.3 percent of original size [2021-03-11 15:36:09,756 INFO L147 QuantifierPusher]: treesize reduction 35, result has 82.8 percent of original size 168 [2021-03-11 15:36:09,891 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 45 [2021-03-11 15:36:09,897 INFO L142 QuantifierPusher]: treesize reduction 299, result has 32.0 percent of original size [2021-03-11 15:36:09,899 INFO L147 QuantifierPusher]: treesize reduction 16, result has 88.7 percent of original size 125 [2021-03-11 15:36:09,964 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 15:36:09,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636646438] [2021-03-11 15:36:09,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 15:36:09,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 15:36:09,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33134570] [2021-03-11 15:36:09,965 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 15:36:09,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 15:36:09,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 15:36:09,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-11 15:36:09,968 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 15:36:10,191 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2021-03-11 15:36:10,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 15:36:10,195 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2021-03-11 15:36:10,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 15:36:10,196 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 15:36:10,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 15:36:10,197 INFO L225 Difference]: With dead ends: 17 [2021-03-11 15:36:10,197 INFO L226 Difference]: Without dead ends: 12 [2021-03-11 15:36:10,197 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 474.7ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 15:36:10,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-03-11 15:36:10,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-03-11 15:36:10,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 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 15:36:10,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2021-03-11 15:36:10,198 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2021-03-11 15:36:10,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 15:36:10,199 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2021-03-11 15:36:10,199 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 15:36:10,199 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2021-03-11 15:36:10,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-03-11 15:36:10,199 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 15:36:10,199 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 15:36:10,199 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 15:36:10,199 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 15:36:10,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 15:36:10,200 INFO L82 PathProgramCache]: Analyzing trace with hash -1399517013, now seen corresponding path program 6 times [2021-03-11 15:36:10,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 15:36:10,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619811101] [2021-03-11 15:36:10,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 15:36:10,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 15:36:10,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 15:36:10,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 15:36:10,252 INFO L142 QuantifierPusher]: treesize reduction 137, result has 36.0 percent of original size [2021-03-11 15:36:10,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-03-11 15:36:10,302 INFO L142 QuantifierPusher]: treesize reduction 101, result has 53.0 percent of original size [2021-03-11 15:36:10,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 114 [2021-03-11 15:36:10,445 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 54 [2021-03-11 15:36:10,447 INFO L142 QuantifierPusher]: treesize reduction 77, result has 46.9 percent of original size [2021-03-11 15:36:10,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-03-11 15:36:10,487 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 15:36:10,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619811101] [2021-03-11 15:36:10,488 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 15:36:10,488 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 15:36:10,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280186536] [2021-03-11 15:36:10,489 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 15:36:10,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 15:36:10,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 15:36:10,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-11 15:36:10,490 INFO L87 Difference]: Start difference. First operand 12 states and 12 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 15:36:10,696 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 79 [2021-03-11 15:36:10,970 WARN L205 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 87 [2021-03-11 15:36:10,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 15:36:10,971 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2021-03-11 15:36:10,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 15:36:10,971 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 15:36:10,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 15:36:10,972 INFO L225 Difference]: With dead ends: 11 [2021-03-11 15:36:10,972 INFO L226 Difference]: Without dead ends: 0 [2021-03-11 15:36:10,972 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 688.2ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 15:36:10,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-03-11 15:36:10,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-03-11 15:36:10,972 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 15:36:10,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-03-11 15:36:10,973 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2021-03-11 15:36:10,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 15:36:10,973 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-03-11 15:36:10,973 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 15:36:10,973 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-03-11 15:36:10,973 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-03-11 15:36:10,973 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-11 15:36:10,976 INFO L202 PluginConnector]: Adding new model file-item-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 03:36:10 BasicIcfg [2021-03-11 15:36:10,976 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 15:36:10,979 INFO L168 Benchmark]: Toolchain (without parser) took 5777.36 ms. Allocated memory was 255.9 MB in the beginning and 450.9 MB in the end (delta: 195.0 MB). Free memory was 236.6 MB in the beginning and 306.5 MB in the end (delta: -69.9 MB). Peak memory consumption was 126.5 MB. Max. memory is 16.0 GB. [2021-03-11 15:36:10,982 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.17 ms. Allocated memory is still 255.9 MB. Free memory was 237.8 MB in the beginning and 237.7 MB in the end (delta: 160.1 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 15:36:10,982 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.35 ms. Allocated memory is still 255.9 MB. Free memory was 236.1 MB in the beginning and 234.8 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 15:36:10,982 INFO L168 Benchmark]: Boogie Preprocessor took 21.47 ms. Allocated memory is still 255.9 MB. Free memory was 234.6 MB in the beginning and 233.7 MB in the end (delta: 893.4 kB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. [2021-03-11 15:36:10,983 INFO L168 Benchmark]: RCFGBuilder took 278.94 ms. Allocated memory is still 255.9 MB. Free memory was 233.5 MB in the beginning and 238.7 MB in the end (delta: -5.2 MB). Peak memory consumption was 18.5 MB. Max. memory is 16.0 GB. [2021-03-11 15:36:10,983 INFO L168 Benchmark]: TraceAbstraction took 5439.83 ms. Allocated memory was 255.9 MB in the beginning and 450.9 MB in the end (delta: 195.0 MB). Free memory was 238.1 MB in the beginning and 306.5 MB in the end (delta: -68.5 MB). Peak memory consumption was 126.9 MB. Max. memory is 16.0 GB. [2021-03-11 15:36:10,984 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 0.17 ms. Allocated memory is still 255.9 MB. Free memory was 237.8 MB in the beginning and 237.7 MB in the end (delta: 160.1 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 26.35 ms. Allocated memory is still 255.9 MB. Free memory was 236.1 MB in the beginning and 234.8 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 21.47 ms. Allocated memory is still 255.9 MB. Free memory was 234.6 MB in the beginning and 233.7 MB in the end (delta: 893.4 kB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. * RCFGBuilder took 278.94 ms. Allocated memory is still 255.9 MB. Free memory was 233.5 MB in the beginning and 238.7 MB in the end (delta: -5.2 MB). Peak memory consumption was 18.5 MB. Max. memory is 16.0 GB. * TraceAbstraction took 5439.83 ms. Allocated memory was 255.9 MB in the beginning and 450.9 MB in the end (delta: 195.0 MB). Free memory was 238.1 MB in the beginning and 306.5 MB in the end (delta: -68.5 MB). Peak memory consumption was 126.9 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 307.0ms, 29 PlacesBefore, 24 PlacesAfterwards, 19 TransitionsBefore, 14 TransitionsAfterwards, 48 CoEnabledTransitionPairs, 2 FixpointIterations, 3 TrivialSequentialCompositions, 3 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 6 TotalNumberOfCompositions, 48 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 48, positive: 48, positive conditional: 0, positive unconditional: 48, 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: 32, positive: 32, positive conditional: 0, positive unconditional: 32, 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: 32, positive: 32, positive conditional: 0, positive unconditional: 32, 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: 48, positive: 16, positive conditional: 0, positive unconditional: 16, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 32, unknown conditional: 0, unknown unconditional: 32] , 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: 50]: 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: 5294.4ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 9.8ms, AutomataDifference: 2203.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 350.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 68 SDtfs, 91 SDslu, 106 SDs, 0 SdLazy, 80 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 96.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3797.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, InterpolantAutomatonStates: 30, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 23.0ms AutomataMinimizationTime, 6 MinimizatonAttempts, 15 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 10.8ms SsaConstructionTime, 112.2ms SatisfiabilityAnalysisTime, 2441.6ms InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 2078 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...