/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-Sleep-SemanticLbe-Delay.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/regression/showcase/Peterson.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-13 00:10:11,553 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-13 00:10:11,555 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-13 00:10:11,584 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-13 00:10:11,652 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-Sleep-SemanticLbe-Delay.epf [2021-03-13 00:10:11,677 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-13 00:10:11,678 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-13 00:10:11,678 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-03-13 00:10:11,678 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-03-13 00:10:11,680 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-13 00:10:11,680 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-13 00:10:11,680 INFO L138 SettingsManager]: * Use SBE=true [2021-03-13 00:10:11,681 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-13 00:10:11,681 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-13 00:10:11,681 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-13 00:10:11,681 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-13 00:10:11,682 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-13 00:10:11,682 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-13 00:10:11,682 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-13 00:10:11,682 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-13 00:10:11,682 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-13 00:10:11,682 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-13 00:10:11,682 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-13 00:10:11,682 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-13 00:10:11,682 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-13 00:10:11,682 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-13 00:10:11,682 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-13 00:10:11,682 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-13 00:10:11,683 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-13 00:10:11,683 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-13 00:10:11,683 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-13 00:10:11,683 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-13 00:10:11,683 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-13 00:10:11,683 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-13 00:10:11,683 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-03-13 00:10:11,683 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-13 00:10:11,683 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-03-13 00:10:11,683 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-13 00:10:11,927 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-13 00:10:11,943 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-13 00:10:11,945 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-13 00:10:11,946 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-13 00:10:11,947 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-13 00:10:11,947 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/showcase/Peterson.bpl [2021-03-13 00:10:11,947 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/showcase/Peterson.bpl' [2021-03-13 00:10:11,979 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-13 00:10:11,984 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-13 00:10:11,985 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-13 00:10:11,985 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-13 00:10:11,985 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-13 00:10:11,994 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "Peterson.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.03 12:10:11" (1/1) ... [2021-03-13 00:10:12,001 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "Peterson.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.03 12:10:11" (1/1) ... [2021-03-13 00:10:12,007 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-13 00:10:12,008 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-13 00:10:12,009 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-13 00:10:12,009 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-13 00:10:12,014 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "Peterson.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.03 12:10:11" (1/1) ... [2021-03-13 00:10:12,014 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "Peterson.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.03 12:10:11" (1/1) ... [2021-03-13 00:10:12,014 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "Peterson.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.03 12:10:11" (1/1) ... [2021-03-13 00:10:12,014 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "Peterson.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.03 12:10:11" (1/1) ... [2021-03-13 00:10:12,020 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "Peterson.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.03 12:10:11" (1/1) ... [2021-03-13 00:10:12,022 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "Peterson.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.03 12:10:11" (1/1) ... [2021-03-13 00:10:12,022 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "Peterson.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.03 12:10:11" (1/1) ... [2021-03-13 00:10:12,023 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-13 00:10:12,024 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-13 00:10:12,024 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-13 00:10:12,025 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-13 00:10:12,025 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "Peterson.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.03 12:10:11" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-13 00:10:12,076 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Process0 given in one single declaration [2021-03-13 00:10:12,076 INFO L130 BoogieDeclarations]: Found specification of procedure Process0 [2021-03-13 00:10:12,076 INFO L138 BoogieDeclarations]: Found implementation of procedure Process0 [2021-03-13 00:10:12,076 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Process1 given in one single declaration [2021-03-13 00:10:12,076 INFO L130 BoogieDeclarations]: Found specification of procedure Process1 [2021-03-13 00:10:12,077 INFO L138 BoogieDeclarations]: Found implementation of procedure Process1 [2021-03-13 00:10:12,077 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-13 00:10:12,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-13 00:10:12,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-13 00:10:12,077 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-13 00:10:12,187 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-13 00:10:12,187 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-03-13 00:10:12,188 INFO L202 PluginConnector]: Adding new model Peterson.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.03 12:10:12 BoogieIcfgContainer [2021-03-13 00:10:12,188 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-13 00:10:12,189 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-13 00:10:12,189 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-13 00:10:12,191 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-13 00:10:12,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Peterson.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.03 12:10:11" (1/2) ... [2021-03-13 00:10:12,192 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65cd225d and model type Peterson.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.03 12:10:12, skipping insertion in model container [2021-03-13 00:10:12,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Peterson.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.03 12:10:12" (2/2) ... [2021-03-13 00:10:12,193 INFO L111 eAbstractionObserver]: Analyzing ICFG Peterson.bpl [2021-03-13 00:10:12,196 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-13 00:10:12,196 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-13 00:10:12,199 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-03-13 00:10:12,199 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-13 00:10:12,217 WARN L313 ript$VariableManager]: TermVariabe Process0Thread1of1ForFork0_x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-13 00:10:12,217 WARN L313 ript$VariableManager]: TermVariabe Process0Thread1of1ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-13 00:10:12,220 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-13 00:10:12,220 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-13 00:10:12,221 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-13 00:10:12,232 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-03-13 00:10:12,271 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-13 00:10:12,272 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-13 00:10:12,272 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-13 00:10:12,272 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-13 00:10:12,272 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-13 00:10:12,272 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-13 00:10:12,272 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-13 00:10:12,272 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-13 00:10:12,278 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-13 00:10:12,278 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 31 places, 26 transitions, 62 flow [2021-03-13 00:10:12,280 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 31 places, 26 transitions, 62 flow [2021-03-13 00:10:12,287 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 31 places, 26 transitions, 62 flow [2021-03-13 00:10:12,301 INFO L129 PetriNetUnfolder]: 2/24 cut-off events. [2021-03-13 00:10:12,301 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-13 00:10:12,303 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 24 events. 2/24 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 47 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 24. Up to 2 conditions per place. [2021-03-13 00:10:12,304 INFO L116 LiptonReduction]: Number of co-enabled transitions 260 [2021-03-13 00:10:12,680 INFO L131 LiptonReduction]: Checked pairs total: 500 [2021-03-13 00:10:12,680 INFO L133 LiptonReduction]: Total number of compositions: 10 [2021-03-13 00:10:12,739 INFO L428 AbstractCegarLoop]: === Iteration 1 === [Process0Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process0Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-13 00:10:12,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-13 00:10:12,743 INFO L82 PathProgramCache]: Analyzing trace with hash 76192537, now seen corresponding path program 1 times [2021-03-13 00:10:12,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-13 00:10:12,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632373564] [2021-03-13 00:10:12,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-13 00:10:12,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-13 00:10:12,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-13 00:10:12,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632373564] [2021-03-13 00:10:12,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-13 00:10:12,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-13 00:10:12,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015039701] [2021-03-13 00:10:12,834 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-13 00:10:12,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-13 00:10:12,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-13 00:10:12,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-13 00:10:12,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-13 00:10:12,847 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-03-13 00:10:12,848 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2021-03-13 00:10:12,848 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-03-13 00:10:12,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-13 00:10:12,889 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-13 00:10:12,889 INFO L428 AbstractCegarLoop]: === Iteration 2 === [Process0Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process0Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-13 00:10:12,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-13 00:10:12,890 INFO L82 PathProgramCache]: Analyzing trace with hash 2109042705, now seen corresponding path program 1 times [2021-03-13 00:10:12,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-13 00:10:12,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370282189] [2021-03-13 00:10:12,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-13 00:10:12,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-13 00:10:12,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-13 00:10:12,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370282189] [2021-03-13 00:10:12,931 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-13 00:10:12,931 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-13 00:10:12,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144248383] [2021-03-13 00:10:12,933 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-13 00:10:12,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-13 00:10:12,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-13 00:10:12,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-13 00:10:12,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-13 00:10:12,935 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-03-13 00:10:12,935 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-03-13 00:10:12,936 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-03-13 00:10:12,936 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-03-13 00:10:12,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-13 00:10:12,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-13 00:10:12,989 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-13 00:10:12,990 INFO L428 AbstractCegarLoop]: === Iteration 3 === [Process0Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process0Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-13 00:10:12,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-13 00:10:12,990 INFO L82 PathProgramCache]: Analyzing trace with hash 2112607310, now seen corresponding path program 1 times [2021-03-13 00:10:12,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-13 00:10:12,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319913544] [2021-03-13 00:10:12,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-13 00:10:13,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-13 00:10:13,036 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-13 00:10:13,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319913544] [2021-03-13 00:10:13,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-13 00:10:13,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-13 00:10:13,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945771609] [2021-03-13 00:10:13,037 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-13 00:10:13,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-13 00:10:13,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-13 00:10:13,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-13 00:10:13,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-13 00:10:13,038 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-03-13 00:10:13,038 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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) [2021-03-13 00:10:13,039 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-03-13 00:10:13,039 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-03-13 00:10:13,039 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-03-13 00:10:13,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-13 00:10:13,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-13 00:10:13,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-13 00:10:13,089 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-13 00:10:13,094 INFO L202 PluginConnector]: Adding new model Peterson.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.03 12:10:13 BasicIcfg [2021-03-13 00:10:13,094 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-13 00:10:13,095 INFO L168 Benchmark]: Toolchain (without parser) took 1113.50 ms. Allocated memory is still 369.1 MB. Free memory was 349.3 MB in the beginning and 265.6 MB in the end (delta: 83.7 MB). Peak memory consumption was 86.1 MB. Max. memory is 16.0 GB. [2021-03-13 00:10:13,095 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.09 ms. Allocated memory is still 369.1 MB. Free memory was 350.4 MB in the beginning and 350.3 MB in the end (delta: 84.6 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-13 00:10:13,095 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.80 ms. Allocated memory is still 369.1 MB. Free memory was 348.9 MB in the beginning and 347.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-13 00:10:13,096 INFO L168 Benchmark]: Boogie Preprocessor took 14.32 ms. Allocated memory is still 369.1 MB. Free memory was 347.4 MB in the beginning and 346.4 MB in the end (delta: 980.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-13 00:10:13,096 INFO L168 Benchmark]: RCFGBuilder took 164.60 ms. Allocated memory is still 369.1 MB. Free memory was 346.4 MB in the beginning and 336.5 MB in the end (delta: 9.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. [2021-03-13 00:10:13,096 INFO L168 Benchmark]: TraceAbstraction took 904.67 ms. Allocated memory is still 369.1 MB. Free memory was 336.1 MB in the beginning and 265.6 MB in the end (delta: 70.4 MB). Peak memory consumption was 73.6 MB. Max. memory is 16.0 GB. [2021-03-13 00:10:13,098 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 0.09 ms. Allocated memory is still 369.1 MB. Free memory was 350.4 MB in the beginning and 350.3 MB in the end (delta: 84.6 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 22.80 ms. Allocated memory is still 369.1 MB. Free memory was 348.9 MB in the beginning and 347.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 14.32 ms. Allocated memory is still 369.1 MB. Free memory was 347.4 MB in the beginning and 346.4 MB in the end (delta: 980.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 164.60 ms. Allocated memory is still 369.1 MB. Free memory was 346.4 MB in the beginning and 336.5 MB in the end (delta: 9.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. * TraceAbstraction took 904.67 ms. Allocated memory is still 369.1 MB. Free memory was 336.1 MB in the beginning and 265.6 MB in the end (delta: 70.4 MB). Peak memory consumption was 73.6 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 400.2ms, 31 PlacesBefore, 23 PlacesAfterwards, 26 TransitionsBefore, 18 TransitionsAfterwards, 260 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 10 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 10 TotalNumberOfCompositions, 500 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 284, positive: 242, positive conditional: 0, positive unconditional: 242, negative: 42, negative conditional: 0, negative unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 191, positive: 162, positive conditional: 0, positive unconditional: 162, negative: 29, negative conditional: 0, negative unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 191, positive: 143, positive conditional: 0, positive unconditional: 143, negative: 48, negative conditional: 0, negative unconditional: 48, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 48, positive: 19, positive conditional: 0, positive unconditional: 19, negative: 29, negative conditional: 0, negative unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 166, positive: 49, positive conditional: 0, positive unconditional: 49, negative: 117, negative conditional: 0, negative unconditional: 117, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 284, positive: 80, positive conditional: 0, positive unconditional: 80, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 191, unknown conditional: 0, unknown unconditional: 191] , Statistics on independence cache: Total cache size (in pairs): 53, Positive cache size: 40, Positive conditional cache size: 0, Positive unconditional cache size: 40, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13 - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 238, positive: 184, positive conditional: 184, positive unconditional: 0, negative: 54, negative conditional: 54, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: DistributingIndependenceRelation.Independence Queries: [ total: 193, positive: 184, positive conditional: 184, positive unconditional: 0, negative: 9, negative conditional: 9, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DistributingIndependenceRelation.Statistics on underlying relations: [ CachedIndependenceRelation.Independence Queries: [ total: 193, positive: 174, positive conditional: 0, positive unconditional: 174, negative: 19, negative conditional: 0, negative unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 53, positive: 47, positive conditional: 0, positive unconditional: 47, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 53, positive: 39, positive conditional: 0, positive unconditional: 39, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Independence Queries: [ total: 14, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 21, positive: 12, positive conditional: 4, positive unconditional: 8, negative: 9, negative conditional: 3, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 92, positive: 41, positive conditional: 14, positive unconditional: 28, negative: 51, negative conditional: 12, negative unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 193, positive: 127, positive conditional: 0, positive unconditional: 127, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 53, unknown conditional: 0, unknown unconditional: 53] , Statistics on independence cache: Total cache size (in pairs): 60, Positive cache size: 51, Positive conditional cache size: 4, Positive unconditional cache size: 47, Negative cache size: 9, Negative conditional cache size: 3, Negative unconditional cache size: 6, SemanticConditionEliminator.Independence Queries: [ total: 39, positive: 10, positive conditional: 10, positive unconditional: 0, negative: 29, negative conditional: 11, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 39, positive: 10, positive conditional: 10, positive unconditional: 0, negative: 29, negative conditional: 11, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 21, positive: 12, positive conditional: 4, positive unconditional: 8, negative: 9, negative conditional: 3, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 92, positive: 41, positive conditional: 14, positive unconditional: 28, negative: 51, negative conditional: 12, negative unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 39, positive: 6, positive conditional: 6, positive unconditional: 0, negative: 26, negative conditional: 8, negative unconditional: 18, unknown: 7, unknown conditional: 7, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 60, Positive cache size: 51, Positive conditional cache size: 4, Positive unconditional cache size: 47, Negative cache size: 9, Negative conditional cache size: 3, Negative unconditional cache size: 6, Eliminated conditions: 18, SemanticConditionEliminator.Independence Queries: [ total: 39, positive: 10, positive conditional: 10, positive unconditional: 0, negative: 29, negative conditional: 11, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 39, positive: 10, positive conditional: 10, positive unconditional: 0, negative: 29, negative conditional: 11, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 21, positive: 12, positive conditional: 4, positive unconditional: 8, negative: 9, negative conditional: 3, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 92, positive: 41, positive conditional: 14, positive unconditional: 28, negative: 51, negative conditional: 12, negative unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 39, positive: 6, positive conditional: 6, positive unconditional: 0, negative: 26, negative conditional: 8, negative unconditional: 18, unknown: 7, unknown conditional: 7, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 60, Positive cache size: 51, Positive conditional cache size: 4, Positive unconditional cache size: 47, Negative cache size: 9, Negative conditional cache size: 3, Negative unconditional cache size: 6, Eliminated conditions: 18, SemanticConditionEliminator.Independence Queries: [ total: 39, positive: 10, positive conditional: 10, positive unconditional: 0, negative: 29, negative conditional: 11, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 39, positive: 10, positive conditional: 10, positive unconditional: 0, negative: 29, negative conditional: 11, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 21, positive: 12, positive conditional: 4, positive unconditional: 8, negative: 9, negative conditional: 3, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 92, positive: 41, positive conditional: 14, positive unconditional: 28, negative: 51, negative conditional: 12, negative unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 39, positive: 6, positive conditional: 6, positive unconditional: 0, negative: 26, negative conditional: 8, negative unconditional: 18, unknown: 7, unknown conditional: 7, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 60, Positive cache size: 51, Positive conditional cache size: 4, Positive unconditional cache size: 47, Negative cache size: 9, Negative conditional cache size: 3, Negative unconditional cache size: 6, Eliminated conditions: 18 ], Maximal queried relation: 3, Independence queries for same thread: 45 - PositiveResult [Line: 37]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 54]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 25 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 848.2ms, OverallIterations: 3, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 421.7ms, PartialOrderReductionTime: 189.3ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 4.4ms SsaConstructionTime, 23.4ms SatisfiabilityAnalysisTime, 93.9ms InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 67 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 2/2 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...