/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-POR-DelaySleep-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/regression/showcase/PetersonWithBug.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2abb09bbbae98a04ae2fcc735832bfdba44f6fbc-2abb09b [2021-06-06 08:54:52,963 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-06 08:54:52,966 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-06 08:54:53,000 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-06 08:54:53,052 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-POR-DelaySleep-NoLbe.epf [2021-06-06 08:54:53,087 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-06 08:54:53,088 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-06 08:54:53,088 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-06 08:54:53,088 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-06 08:54:53,090 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-06 08:54:53,090 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-06 08:54:53,091 INFO L138 SettingsManager]: * Use SBE=true [2021-06-06 08:54:53,091 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-06 08:54:53,091 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-06 08:54:53,091 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-06 08:54:53,092 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-06 08:54:53,092 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-06 08:54:53,092 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-06 08:54:53,092 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-06 08:54:53,093 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-06 08:54:53,093 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-06 08:54:53,093 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-06 08:54:53,093 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-06 08:54:53,093 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-06 08:54:53,093 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-06 08:54:53,093 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-06 08:54:53,093 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-06 08:54:53,094 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-06 08:54:53,094 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-06 08:54:53,094 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-06 08:54:53,094 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-06 08:54:53,094 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-06 08:54:53,094 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-06 08:54:53,094 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-06 08:54:53,094 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-06 08:54:53,094 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-06-06 08:54:53,095 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-06 08:54:53,095 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-06-06 08:54:53,095 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-06 08:54:53,357 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-06 08:54:53,373 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-06 08:54:53,375 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-06 08:54:53,376 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-06 08:54:53,377 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-06 08:54:53,378 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/showcase/PetersonWithBug.bpl [2021-06-06 08:54:53,378 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/showcase/PetersonWithBug.bpl' [2021-06-06 08:54:53,411 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-06 08:54:53,412 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-06 08:54:53,412 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-06 08:54:53,413 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-06 08:54:53,413 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-06 08:54:53,422 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 08:54:53" (1/1) ... [2021-06-06 08:54:53,427 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 08:54:53" (1/1) ... [2021-06-06 08:54:53,432 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-06 08:54:53,433 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-06 08:54:53,433 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-06 08:54:53,433 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-06 08:54:53,439 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 08:54:53" (1/1) ... [2021-06-06 08:54:53,439 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 08:54:53" (1/1) ... [2021-06-06 08:54:53,440 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 08:54:53" (1/1) ... [2021-06-06 08:54:53,440 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 08:54:53" (1/1) ... [2021-06-06 08:54:53,442 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 08:54:53" (1/1) ... [2021-06-06 08:54:53,444 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 08:54:53" (1/1) ... [2021-06-06 08:54:53,445 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 08:54:53" (1/1) ... [2021-06-06 08:54:53,445 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-06 08:54:53,446 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-06 08:54:53,446 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-06 08:54:53,446 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-06 08:54:53,447 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 08:54:53" (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 [2021-06-06 08:54:53,515 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Process0 given in one single declaration [2021-06-06 08:54:53,515 INFO L130 BoogieDeclarations]: Found specification of procedure Process0 [2021-06-06 08:54:53,515 INFO L138 BoogieDeclarations]: Found implementation of procedure Process0 [2021-06-06 08:54:53,515 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Process1 given in one single declaration [2021-06-06 08:54:53,516 INFO L130 BoogieDeclarations]: Found specification of procedure Process1 [2021-06-06 08:54:53,516 INFO L138 BoogieDeclarations]: Found implementation of procedure Process1 [2021-06-06 08:54:53,516 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-06 08:54:53,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-06 08:54:53,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-06 08:54:53,517 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-06 08:54:53,670 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-06 08:54:53,670 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-06-06 08:54:53,672 INFO L202 PluginConnector]: Adding new model PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.06 08:54:53 BoogieIcfgContainer [2021-06-06 08:54:53,672 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-06 08:54:53,673 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-06 08:54:53,673 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-06 08:54:53,675 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-06 08:54:53,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 08:54:53" (1/2) ... [2021-06-06 08:54:53,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@385e528d and model type PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.06 08:54:53, skipping insertion in model container [2021-06-06 08:54:53,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.06 08:54:53" (2/2) ... [2021-06-06 08:54:53,677 INFO L111 eAbstractionObserver]: Analyzing ICFG PetersonWithBug.bpl [2021-06-06 08:54:53,683 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-06 08:54:53,683 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-06 08:54:53,684 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-06-06 08:54:53,688 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-06 08:54:53,728 WARN L313 ript$VariableManager]: TermVariabe Process0Thread1of1ForFork0_x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 08:54:53,729 WARN L313 ript$VariableManager]: TermVariabe Process0Thread1of1ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 08:54:53,733 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 08:54:53,733 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 08:54:53,756 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-06 08:54:53,789 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 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 [2021-06-06 08:54:53,842 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-06 08:54:53,842 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-06 08:54:53,842 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-06 08:54:53,842 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-06 08:54:53,842 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-06 08:54:53,842 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-06 08:54:53,843 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-06 08:54:53,843 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == Process0======== [2021-06-06 08:54:53,987 INFO L301 ceAbstractionStarter]: Result for error location Process0 was SAFE (1/5) [2021-06-06 08:54:53,988 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-06-06 08:54:53,997 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-06 08:54:53,997 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-06 08:54:53,997 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-06 08:54:53,997 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-06 08:54:53,997 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-06 08:54:53,997 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-06 08:54:53,997 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-06 08:54:53,997 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == Process1======== [2021-06-06 08:54:54,094 INFO L301 ceAbstractionStarter]: Result for error location Process1 was SAFE (2/5) [2021-06-06 08:54:54,094 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-06-06 08:54:54,108 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-06 08:54:54,108 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-06 08:54:54,108 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-06 08:54:54,109 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-06 08:54:54,109 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-06 08:54:54,109 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-06 08:54:54,109 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-06 08:54:54,109 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-06 08:54:54,181 INFO L301 ceAbstractionStarter]: Result for error location ULTIMATE.start was SAFE (3/5) [2021-06-06 08:54:54,182 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2021-06-06 08:54:54,211 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-06 08:54:54,211 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-06 08:54:54,211 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-06 08:54:54,211 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-06 08:54:54,211 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-06 08:54:54,211 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-06 08:54:54,212 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-06 08:54:54,212 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == Process1Thread1of1ForFork1======== [2021-06-06 08:54:54,215 INFO L430 AbstractCegarLoop]: === Iteration 1 === [Process1Err0ASSERT_VIOLATIONASSERT]=== [2021-06-06 08:54:54,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 08:54:54,219 INFO L82 PathProgramCache]: Analyzing trace with hash 758603323, now seen corresponding path program 1 times Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-06-06 08:54:54,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 08:54:54,227 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109544776] [2021-06-06 08:54:54,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 08:54:54,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 08:54:54,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 08:54:54,318 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 08:54:54,318 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109544776] [2021-06-06 08:54:54,319 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109544776] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-06 08:54:54,319 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-06 08:54:54,319 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-06 08:54:54,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900396763] [2021-06-06 08:54:54,323 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-06 08:54:54,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 08:54:54,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-06 08:54:54,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-06 08:54:54,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 08:54:54,336 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 08:54:54,336 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 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) [2021-06-06 08:54:54,336 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 08:54:54,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 08:54:54,383 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-06 08:54:54,383 INFO L430 AbstractCegarLoop]: === Iteration 2 === [Process1Err0ASSERT_VIOLATIONASSERT]=== [2021-06-06 08:54:54,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 08:54:54,384 INFO L82 PathProgramCache]: Analyzing trace with hash -705277929, now seen corresponding path program 1 times [2021-06-06 08:54:54,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 08:54:54,384 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84558409] [2021-06-06 08:54:54,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 08:54:54,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 08:54:54,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 08:54:54,432 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 08:54:54,433 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84558409] [2021-06-06 08:54:54,433 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84558409] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-06 08:54:54,433 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-06 08:54:54,433 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-06 08:54:54,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518326370] [2021-06-06 08:54:54,434 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-06 08:54:54,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 08:54:54,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-06 08:54:54,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-06-06 08:54:54,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 08:54:54,435 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 08:54:54,436 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 3.25) 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) [2021-06-06 08:54:54,436 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-06 08:54:54,436 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 08:54:54,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 08:54:54,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 08:54:54,478 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-06 08:54:54,478 INFO L430 AbstractCegarLoop]: === Iteration 3 === [Process1Err0ASSERT_VIOLATIONASSERT]=== [2021-06-06 08:54:54,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 08:54:54,479 INFO L82 PathProgramCache]: Analyzing trace with hash -1732506761, now seen corresponding path program 1 times [2021-06-06 08:54:54,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 08:54:54,481 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660268046] [2021-06-06 08:54:54,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 08:54:54,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 08:54:54,536 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 08:54:54,536 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 08:54:54,536 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660268046] [2021-06-06 08:54:54,536 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660268046] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-06 08:54:54,537 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-06 08:54:54,537 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-06 08:54:54,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810069005] [2021-06-06 08:54:54,537 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-06 08:54:54,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 08:54:54,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-06 08:54:54,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-06-06 08:54:54,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 08:54:54,538 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 08:54:54,539 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 08:54:54,539 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-06 08:54:54,539 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 08:54:54,539 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 08:54:54,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 08:54:54,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 08:54:54,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 08:54:54,565 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-06 08:54:54,565 INFO L430 AbstractCegarLoop]: === Iteration 4 === [Process1Err0ASSERT_VIOLATIONASSERT]=== [2021-06-06 08:54:54,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 08:54:54,566 INFO L82 PathProgramCache]: Analyzing trace with hash -1168732141, now seen corresponding path program 1 times [2021-06-06 08:54:54,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 08:54:54,566 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455668878] [2021-06-06 08:54:54,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 08:54:54,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-06 08:54:54,574 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-06 08:54:54,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-06 08:54:54,580 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-06 08:54:54,592 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-06 08:54:54,592 INFO L655 BasicCegarLoop]: Counterexample might be feasible [2021-06-06 08:54:54,592 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-06 08:54:54,594 INFO L301 ceAbstractionStarter]: Result for error location Process1Thread1of1ForFork1 was UNSAFE (4/5) [2021-06-06 08:54:54,596 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-06-06 08:54:54,600 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-06 08:54:54,600 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-06 08:54:54,600 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-06 08:54:54,600 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-06 08:54:54,600 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-06 08:54:54,601 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-06 08:54:54,601 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-06 08:54:54,601 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == Process0Thread1of1ForFork0======== [2021-06-06 08:54:54,602 INFO L430 AbstractCegarLoop]: === Iteration 1 === [Process0Err0ASSERT_VIOLATIONASSERT]=== [2021-06-06 08:54:54,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 08:54:54,603 INFO L82 PathProgramCache]: Analyzing trace with hash -1990965056, now seen corresponding path program 1 times [2021-06-06 08:54:54,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 08:54:54,603 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767527555] [2021-06-06 08:54:54,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 08:54:54,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 08:54:54,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 08:54:54,615 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 08:54:54,615 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767527555] [2021-06-06 08:54:54,615 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767527555] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-06 08:54:54,615 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-06 08:54:54,615 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-06 08:54:54,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467736470] [2021-06-06 08:54:54,615 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-06 08:54:54,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 08:54:54,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-06 08:54:54,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-06 08:54:54,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 08:54:54,616 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 08:54:54,616 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2021-06-06 08:54:54,616 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 08:54:54,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 08:54:54,677 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-06 08:54:54,677 INFO L430 AbstractCegarLoop]: === Iteration 2 === [Process0Err0ASSERT_VIOLATIONASSERT]=== [2021-06-06 08:54:54,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 08:54:54,678 INFO L82 PathProgramCache]: Analyzing trace with hash -940787769, now seen corresponding path program 1 times [2021-06-06 08:54:54,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 08:54:54,678 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197547487] [2021-06-06 08:54:54,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 08:54:54,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 08:54:54,702 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-06-06 08:54:54,703 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 08:54:54,703 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197547487] [2021-06-06 08:54:54,703 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197547487] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-06 08:54:54,703 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-06 08:54:54,703 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-06 08:54:54,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26425451] [2021-06-06 08:54:54,703 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-06 08:54:54,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 08:54:54,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-06 08:54:54,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-06-06 08:54:54,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 08:54:54,704 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 08:54:54,705 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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) [2021-06-06 08:54:54,705 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-06 08:54:54,705 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 08:54:54,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 08:54:54,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 08:54:54,726 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-06 08:54:54,726 INFO L430 AbstractCegarLoop]: === Iteration 3 === [Process0Err0ASSERT_VIOLATIONASSERT]=== [2021-06-06 08:54:54,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 08:54:54,726 INFO L82 PathProgramCache]: Analyzing trace with hash 674624759, now seen corresponding path program 1 times [2021-06-06 08:54:54,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 08:54:54,727 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120767425] [2021-06-06 08:54:54,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 08:54:54,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 08:54:54,754 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-06-06 08:54:54,755 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 08:54:54,755 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120767425] [2021-06-06 08:54:54,755 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120767425] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-06 08:54:54,755 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-06 08:54:54,755 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-06 08:54:54,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625863431] [2021-06-06 08:54:54,756 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-06 08:54:54,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 08:54:54,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-06 08:54:54,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-06-06 08:54:54,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 08:54:54,756 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 08:54:54,757 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 08:54:54,757 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-06 08:54:54,757 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 08:54:54,757 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 08:54:54,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 08:54:54,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 08:54:54,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 08:54:54,775 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-06 08:54:54,775 INFO L430 AbstractCegarLoop]: === Iteration 4 === [Process0Err0ASSERT_VIOLATIONASSERT]=== [2021-06-06 08:54:54,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 08:54:54,776 INFO L82 PathProgramCache]: Analyzing trace with hash -1168722231, now seen corresponding path program 2 times [2021-06-06 08:54:54,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 08:54:54,776 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99121200] [2021-06-06 08:54:54,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 08:54:54,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-06 08:54:54,781 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-06 08:54:54,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-06 08:54:54,785 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-06 08:54:54,787 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-06 08:54:54,788 INFO L655 BasicCegarLoop]: Counterexample might be feasible [2021-06-06 08:54:54,788 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-06 08:54:54,789 INFO L301 ceAbstractionStarter]: Result for error location Process0Thread1of1ForFork0 was UNSAFE (5/5) [2021-06-06 08:54:54,789 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-06 08:54:54,805 INFO L202 PluginConnector]: Adding new model PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.06 08:54:54 BasicIcfg [2021-06-06 08:54:54,805 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-06 08:54:54,806 INFO L168 Benchmark]: Toolchain (without parser) took 1393.68 ms. Allocated memory is still 327.2 MB. Free memory was 306.5 MB in the beginning and 221.9 MB in the end (delta: 84.6 MB). Peak memory consumption was 86.6 MB. Max. memory is 16.0 GB. [2021-06-06 08:54:54,806 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.15 ms. Allocated memory is still 327.2 MB. Free memory was 307.6 MB in the beginning and 307.5 MB in the end (delta: 70.3 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-06 08:54:54,806 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.67 ms. Allocated memory is still 327.2 MB. Free memory was 306.4 MB in the beginning and 305.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-06 08:54:54,807 INFO L168 Benchmark]: Boogie Preprocessor took 12.65 ms. Allocated memory is still 327.2 MB. Free memory was 305.0 MB in the beginning and 304.0 MB in the end (delta: 992.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-06 08:54:54,807 INFO L168 Benchmark]: RCFGBuilder took 225.67 ms. Allocated memory is still 327.2 MB. Free memory was 304.0 MB in the beginning and 294.0 MB in the end (delta: 10.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. [2021-06-06 08:54:54,807 INFO L168 Benchmark]: TraceAbstraction took 1131.85 ms. Allocated memory is still 327.2 MB. Free memory was 293.5 MB in the beginning and 221.9 MB in the end (delta: 71.6 MB). Peak memory consumption was 71.9 MB. Max. memory is 16.0 GB. [2021-06-06 08:54:54,808 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 0.15 ms. Allocated memory is still 327.2 MB. Free memory was 307.6 MB in the beginning and 307.5 MB in the end (delta: 70.3 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 19.67 ms. Allocated memory is still 327.2 MB. Free memory was 306.4 MB in the beginning and 305.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 12.65 ms. Allocated memory is still 327.2 MB. Free memory was 305.0 MB in the beginning and 304.0 MB in the end (delta: 992.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 225.67 ms. Allocated memory is still 327.2 MB. Free memory was 304.0 MB in the beginning and 294.0 MB in the end (delta: 10.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1131.85 ms. Allocated memory is still 327.2 MB. Free memory was 293.5 MB in the beginning and 221.9 MB in the end (delta: 71.6 MB). Peak memory consumption was 71.9 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 450, positive: 360, positive conditional: 360, positive unconditional: 0, negative: 90, negative conditional: 90, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: DistributingIndependenceRelation.Independence Queries: [ total: 380, positive: 360, positive conditional: 360, positive unconditional: 0, negative: 20, negative conditional: 20, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DistributingIndependenceRelation.Statistics on underlying relations: [ CachedIndependenceRelation.Independence Queries: [ total: 380, positive: 360, positive conditional: 0, positive unconditional: 360, negative: 20, negative conditional: 0, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 133, positive: 123, positive conditional: 0, positive unconditional: 123, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 133, positive: 114, positive conditional: 0, positive unconditional: 114, negative: 19, negative conditional: 0, negative unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Independence Queries: [ total: 19, positive: 9, positive conditional: 0, positive unconditional: 9, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 19, positive: 9, positive conditional: 0, positive unconditional: 9, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 60, positive: 39, positive conditional: 0, positive unconditional: 39, negative: 21, negative conditional: 0, negative unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 380, positive: 237, positive conditional: 0, positive unconditional: 237, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 133, unknown conditional: 0, unknown unconditional: 133] , Statistics on independence cache: Total cache size (in pairs): 133, Positive cache size: 123, Positive conditional cache size: 0, Positive unconditional cache size: 123, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10 ], Maximal queried relation: 0, Independence queries for same thread: 70 - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 450, positive: 360, positive conditional: 360, positive unconditional: 0, negative: 90, negative conditional: 90, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: DistributingIndependenceRelation.Independence Queries: [ total: 380, positive: 360, positive conditional: 360, positive unconditional: 0, negative: 20, negative conditional: 20, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DistributingIndependenceRelation.Statistics on underlying relations: [ CachedIndependenceRelation.Independence Queries: [ total: 380, positive: 360, positive conditional: 0, positive unconditional: 360, negative: 20, negative conditional: 0, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 133, positive: 123, positive conditional: 0, positive unconditional: 123, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 133, positive: 114, positive conditional: 0, positive unconditional: 114, negative: 19, negative conditional: 0, negative unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Independence Queries: [ total: 19, positive: 9, positive conditional: 0, positive unconditional: 9, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 19, positive: 9, positive conditional: 0, positive unconditional: 9, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 71, positive: 45, positive conditional: 0, positive unconditional: 45, negative: 27, negative conditional: 0, negative unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 380, positive: 237, positive conditional: 0, positive unconditional: 237, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 133, unknown conditional: 0, unknown unconditional: 133] , Statistics on independence cache: Total cache size (in pairs): 133, Positive cache size: 123, Positive conditional cache size: 0, Positive unconditional cache size: 123, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10 ], Maximal queried relation: 0, Independence queries for same thread: 70 - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 450, positive: 360, positive conditional: 360, positive unconditional: 0, negative: 90, negative conditional: 90, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: DistributingIndependenceRelation.Independence Queries: [ total: 380, positive: 360, positive conditional: 360, positive unconditional: 0, negative: 20, negative conditional: 20, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DistributingIndependenceRelation.Statistics on underlying relations: [ CachedIndependenceRelation.Independence Queries: [ total: 380, positive: 360, positive conditional: 0, positive unconditional: 360, negative: 20, negative conditional: 0, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 133, positive: 123, positive conditional: 0, positive unconditional: 123, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 133, positive: 114, positive conditional: 0, positive unconditional: 114, negative: 19, negative conditional: 0, negative unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Independence Queries: [ total: 19, positive: 9, positive conditional: 0, positive unconditional: 9, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 19, positive: 9, positive conditional: 0, positive unconditional: 9, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 55, positive: 39, positive conditional: 0, positive unconditional: 39, negative: 16, negative conditional: 0, negative unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 380, positive: 237, positive conditional: 0, positive unconditional: 237, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 133, unknown conditional: 0, unknown unconditional: 133] , Statistics on independence cache: Total cache size (in pairs): 133, Positive cache size: 123, Positive conditional cache size: 0, Positive unconditional cache size: 123, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10 ], Maximal queried relation: 0, Independence queries for same thread: 70 - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 307, positive: 247, positive conditional: 247, positive unconditional: 0, negative: 60, negative conditional: 60, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: DistributingIndependenceRelation.Independence Queries: [ total: 257, positive: 247, positive conditional: 247, positive unconditional: 0, negative: 10, negative conditional: 10, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DistributingIndependenceRelation.Statistics on underlying relations: [ CachedIndependenceRelation.Independence Queries: [ total: 257, positive: 247, positive conditional: 0, positive unconditional: 247, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 76, positive: 71, positive conditional: 0, positive unconditional: 71, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 76, positive: 67, positive conditional: 0, positive unconditional: 67, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Independence Queries: [ total: 9, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 13, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 9, negative conditional: 4, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 44, positive: 31, positive conditional: 0, positive unconditional: 31, negative: 13, negative conditional: 5, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 257, positive: 176, positive conditional: 0, positive unconditional: 176, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 76, unknown conditional: 0, unknown unconditional: 76] , Statistics on independence cache: Total cache size (in pairs): 80, Positive cache size: 71, Positive conditional cache size: 0, Positive unconditional cache size: 71, Negative cache size: 9, Negative conditional cache size: 4, Negative unconditional cache size: 5, SemanticConditionEliminator.Independence Queries: [ total: 25, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 25, negative conditional: 4, negative unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 25, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 25, negative conditional: 4, negative unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 13, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 9, negative conditional: 4, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 44, positive: 31, positive conditional: 0, positive unconditional: 31, negative: 13, negative conditional: 5, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 25, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 21, negative conditional: 0, negative unconditional: 21, unknown: 4, unknown conditional: 4, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 80, Positive cache size: 71, Positive conditional cache size: 0, Positive unconditional cache size: 71, Negative cache size: 9, Negative conditional cache size: 4, Negative unconditional cache size: 5, Eliminated conditions: 21, SemanticConditionEliminator.Independence Queries: [ total: 25, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 25, negative conditional: 4, negative unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 25, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 25, negative conditional: 4, negative unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 13, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 9, negative conditional: 4, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 44, positive: 31, positive conditional: 0, positive unconditional: 31, negative: 13, negative conditional: 5, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 25, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 21, negative conditional: 0, negative unconditional: 21, unknown: 4, unknown conditional: 4, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 80, Positive cache size: 71, Positive conditional cache size: 0, Positive unconditional cache size: 71, Negative cache size: 9, Negative conditional cache size: 4, Negative unconditional cache size: 5, Eliminated conditions: 21, SemanticConditionEliminator.Independence Queries: [ total: 25, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 25, negative conditional: 4, negative unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 25, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 25, negative conditional: 4, negative unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 13, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 9, negative conditional: 4, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 44, positive: 31, positive conditional: 0, positive unconditional: 31, negative: 13, negative conditional: 5, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 25, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 21, negative conditional: 0, negative unconditional: 21, unknown: 4, unknown conditional: 4, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 80, Positive cache size: 71, Positive conditional cache size: 0, Positive unconditional cache size: 71, Negative cache size: 9, Negative conditional cache size: 4, Negative unconditional cache size: 5, Eliminated conditions: 21 ], Maximal queried relation: 3, Independence queries for same thread: 50 - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 440, positive: 333, positive conditional: 333, positive unconditional: 0, negative: 107, negative conditional: 107, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: DistributingIndependenceRelation.Independence Queries: [ total: 360, positive: 333, positive conditional: 333, positive unconditional: 0, negative: 27, negative conditional: 27, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DistributingIndependenceRelation.Statistics on underlying relations: [ CachedIndependenceRelation.Independence Queries: [ total: 360, positive: 331, positive conditional: 0, positive unconditional: 331, negative: 29, negative conditional: 0, negative unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 101, positive: 91, positive conditional: 0, positive unconditional: 91, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 101, positive: 82, positive conditional: 0, positive unconditional: 82, negative: 19, negative conditional: 0, negative unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Independence Queries: [ total: 19, positive: 9, positive conditional: 0, positive unconditional: 9, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 25, positive: 10, positive conditional: 1, positive unconditional: 9, negative: 15, negative conditional: 5, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 52, positive: 25, positive conditional: 1, positive unconditional: 24, negative: 28, negative conditional: 5, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 360, positive: 240, positive conditional: 0, positive unconditional: 240, negative: 19, negative conditional: 0, negative unconditional: 19, unknown: 101, unknown conditional: 0, unknown unconditional: 101] , Statistics on independence cache: Total cache size (in pairs): 107, Positive cache size: 92, Positive conditional cache size: 1, Positive unconditional cache size: 91, Negative cache size: 15, Negative conditional cache size: 5, Negative unconditional cache size: 10, SemanticConditionEliminator.Independence Queries: [ total: 61, positive: 2, positive conditional: 2, positive unconditional: 0, negative: 59, negative conditional: 9, negative unconditional: 50, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 61, positive: 2, positive conditional: 2, positive unconditional: 0, negative: 59, negative conditional: 9, negative unconditional: 50, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 25, positive: 10, positive conditional: 1, positive unconditional: 9, negative: 15, negative conditional: 5, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 52, positive: 25, positive conditional: 1, positive unconditional: 24, negative: 28, negative conditional: 5, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 61, positive: 1, positive conditional: 1, positive unconditional: 0, negative: 54, negative conditional: 4, negative unconditional: 50, unknown: 6, unknown conditional: 6, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 107, Positive cache size: 92, Positive conditional cache size: 1, Positive unconditional cache size: 91, Negative cache size: 15, Negative conditional cache size: 5, Negative unconditional cache size: 10, Eliminated conditions: 50, SemanticConditionEliminator.Independence Queries: [ total: 61, positive: 2, positive conditional: 2, positive unconditional: 0, negative: 59, negative conditional: 9, negative unconditional: 50, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 61, positive: 2, positive conditional: 2, positive unconditional: 0, negative: 59, negative conditional: 9, negative unconditional: 50, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 25, positive: 10, positive conditional: 1, positive unconditional: 9, negative: 15, negative conditional: 5, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 52, positive: 25, positive conditional: 1, positive unconditional: 24, negative: 28, negative conditional: 5, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 61, positive: 1, positive conditional: 1, positive unconditional: 0, negative: 54, negative conditional: 4, negative unconditional: 50, unknown: 6, unknown conditional: 6, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 107, Positive cache size: 92, Positive conditional cache size: 1, Positive unconditional cache size: 91, Negative cache size: 15, Negative conditional cache size: 5, Negative unconditional cache size: 10, Eliminated conditions: 50, SemanticConditionEliminator.Independence Queries: [ total: 61, positive: 2, positive conditional: 2, positive unconditional: 0, negative: 59, negative conditional: 9, negative unconditional: 50, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 61, positive: 2, positive conditional: 2, positive unconditional: 0, negative: 59, negative conditional: 9, negative unconditional: 50, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 25, positive: 10, positive conditional: 1, positive unconditional: 9, negative: 15, negative conditional: 5, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 52, positive: 25, positive conditional: 1, positive unconditional: 24, negative: 28, negative conditional: 5, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 61, positive: 1, positive conditional: 1, positive unconditional: 0, negative: 54, negative conditional: 4, negative unconditional: 50, unknown: 6, unknown conditional: 6, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 107, Positive cache size: 92, Positive conditional cache size: 1, Positive unconditional cache size: 91, Negative cache size: 15, Negative conditional cache size: 5, Negative unconditional cache size: 10, Eliminated conditions: 50 ], Maximal queried relation: 3, Independence queries for same thread: 80 - CounterExampleResult [Line: 40]: assertion can be violated assertion can be violated We found a FailurePath: [L25] 0 critical := 0; VAL [critical=0] [L26] FORK 0 fork 0 Process0(); VAL [critical=0] [L37] 1 turn := 1; VAL [critical=0, turn=1] [L38] 1 flag0 := 1; VAL [critical=0, flag0=1, turn=1] [L27] FORK 0 fork 1 Process1(); VAL [critical=0, flag0=1, turn=1] [L56] 2 flag1 := 1; VAL [critical=0, flag0=1, flag1=1, turn=1] [L57] 2 turn := 0; VAL [critical=0, flag0=1, flag1=1, turn=0] [L39] 1 assume flag1 == 0 || turn == 0; VAL [critical=0, flag0=1, flag1=1, turn=0] [L40] 1 assert critical == 0; VAL [critical=0, flag0=1, flag1=1, turn=0] [L41] 1 critical := 1; VAL [critical=1, flag0=1, flag1=1, turn=0] [L42] 1 critical := 0; VAL [critical=0, flag0=1, flag1=1, turn=0] [L43] 1 flag0 := 0; VAL [critical=0, flag0=0, flag1=1, turn=0] [L37] 1 turn := 1; VAL [critical=0, flag0=0, flag1=1, turn=1] [L58] 2 assume flag0 == 0 || turn == 1; VAL [critical=0, flag0=0, flag1=1, turn=1] [L59] 2 assert critical == 0; VAL [critical=0, flag0=0, flag1=1, turn=1] [L60] 2 critical := 1; VAL [critical=1, flag0=0, flag1=1, turn=1] [L61] 2 critical := 0; VAL [critical=0, flag0=0, flag1=1, turn=1] [L62] 2 flag1 := 0; VAL [critical=0, flag0=0, flag1=0, turn=1] [L56] 2 flag1 := 1; VAL [critical=0, flag0=0, flag1=1, turn=1] [L57] 2 turn := 0; VAL [critical=0, flag0=0, flag1=1, turn=0] [L58] 2 assume flag0 == 0 || turn == 1; VAL [critical=0, flag0=0, flag1=1, turn=0] [L38] 1 flag0 := 1; VAL [critical=0, flag0=1, flag1=1, turn=0] [L39] 1 assume flag1 == 0 || turn == 0; VAL [critical=0, flag0=1, flag1=1, turn=0] [L59] 2 assert critical == 0; VAL [critical=0, flag0=1, flag1=1, turn=0] [L60] 2 critical := 1; VAL [critical=1, flag0=1, flag1=1, turn=0] [L40] 1 assert critical == 0; VAL [critical=1, flag0=1, flag1=1, turn=0] - CounterExampleResult [Line: 59]: assertion can be violated assertion can be violated We found a FailurePath: [L25] 0 critical := 0; VAL [critical=0] [L26] FORK 0 fork 0 Process0(); VAL [critical=0] [L37] 1 turn := 1; VAL [critical=0, turn=1] [L38] 1 flag0 := 1; VAL [critical=0, flag0=1, turn=1] [L27] FORK 0 fork 1 Process1(); VAL [critical=0, flag0=1, turn=1] [L56] 2 flag1 := 1; VAL [critical=0, flag0=1, flag1=1, turn=1] [L57] 2 turn := 0; VAL [critical=0, flag0=1, flag1=1, turn=0] [L39] 1 assume flag1 == 0 || turn == 0; VAL [critical=0, flag0=1, flag1=1, turn=0] [L40] 1 assert critical == 0; VAL [critical=0, flag0=1, flag1=1, turn=0] [L41] 1 critical := 1; VAL [critical=1, flag0=1, flag1=1, turn=0] [L42] 1 critical := 0; VAL [critical=0, flag0=1, flag1=1, turn=0] [L43] 1 flag0 := 0; VAL [critical=0, flag0=0, flag1=1, turn=0] [L37] 1 turn := 1; VAL [critical=0, flag0=0, flag1=1, turn=1] [L58] 2 assume flag0 == 0 || turn == 1; VAL [critical=0, flag0=0, flag1=1, turn=1] [L59] 2 assert critical == 0; VAL [critical=0, flag0=0, flag1=1, turn=1] [L60] 2 critical := 1; VAL [critical=1, flag0=0, flag1=1, turn=1] [L61] 2 critical := 0; VAL [critical=0, flag0=0, flag1=1, turn=1] [L62] 2 flag1 := 0; VAL [critical=0, flag0=0, flag1=0, turn=1] [L56] 2 flag1 := 1; VAL [critical=0, flag0=0, flag1=1, turn=1] [L57] 2 turn := 0; VAL [critical=0, flag0=0, flag1=1, turn=0] [L58] 2 assume flag0 == 0 || turn == 1; VAL [critical=0, flag0=0, flag1=1, turn=0] [L38] 1 flag0 := 1; VAL [critical=0, flag0=1, flag1=1, turn=0] [L39] 1 assume flag1 == 0 || turn == 0; VAL [critical=0, flag0=1, flag1=1, turn=0] [L40] 1 assert critical == 0; VAL [critical=0, flag0=1, flag1=1, turn=0] [L41] 1 critical := 1; VAL [critical=1, flag0=1, flag1=1, turn=0] [L59] 2 assert critical == 0; VAL [critical=1, flag0=1, flag1=1, turn=0] - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: Process0 with 1 thread instances CFG has 5 procedures, 47 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 168.4ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 25.5ms, PartialOrderReductionTime: 113.5ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 0, 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: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: Process1 with 1 thread instances CFG has 5 procedures, 47 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 103.0ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1.1ms, PartialOrderReductionTime: 94.2ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 0, 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: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 5 procedures, 47 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 85.3ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 0.8ms, PartialOrderReductionTime: 70.1ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 0, 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: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: Process1Thread1of1ForFork1 with 1 thread instances CFG has 5 procedures, 47 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 410.6ms, OverallIterations: 4, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1.0ms, PartialOrderReductionTime: 116.3ms, 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, 39.5ms SatisfiabilityAnalysisTime, 110.5ms InterpolantComputationTime, 72 NumberOfCodeBlocks, 72 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 42 ConstructedInterpolants, 0 QuantifiedInterpolants, 98 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 5/5 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 - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: Process0Thread1of1ForFork0 with 1 thread instances CFG has 5 procedures, 47 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 192.9ms, OverallIterations: 4, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 0.8ms, PartialOrderReductionTime: 100.4ms, 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: 2.4ms SsaConstructionTime, 10.4ms SatisfiabilityAnalysisTime, 49.9ms InterpolantComputationTime, 94 NumberOfCodeBlocks, 94 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 64 ConstructedInterpolants, 0 QuantifiedInterpolants, 138 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 35/35 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 incorrect! Received shutdown request...