/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-NoLbe-Delay.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-proofs/counter-add-2-semi-alt-OJ4.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-a865e3bea3ade1065a4c95009cfa501fe03c5538-a865e3b [2021-02-19 22:51:12,700 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-19 22:51:12,702 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-19 22:51:12,727 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-19 22:51:12,766 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-NoLbe-Delay.epf [2021-02-19 22:51:12,806 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-19 22:51:12,806 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-19 22:51:12,806 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-02-19 22:51:12,806 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-02-19 22:51:12,808 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-19 22:51:12,808 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-19 22:51:12,808 INFO L138 SettingsManager]: * Use SBE=true [2021-02-19 22:51:12,808 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-19 22:51:12,808 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-19 22:51:12,808 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-19 22:51:12,809 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-19 22:51:12,809 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-19 22:51:12,809 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-19 22:51:12,809 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-19 22:51:12,809 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-19 22:51:12,809 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-19 22:51:12,810 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-19 22:51:12,810 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-19 22:51:12,810 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-19 22:51:12,810 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-19 22:51:12,810 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-19 22:51:12,810 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-19 22:51:12,811 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-19 22:51:12,811 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-19 22:51:12,811 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-19 22:51:12,811 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-19 22:51:12,813 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-19 22:51:12,813 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-19 22:51:12,814 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-19 22:51:12,814 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-02-19 22:51:12,814 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-02-19 22:51:12,814 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-19 22:51:12,814 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-02-19 22:51:12,815 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-19 22:51:13,144 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-19 22:51:13,164 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-19 22:51:13,167 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-19 22:51:13,168 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-02-19 22:51:13,170 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-02-19 22:51:13,171 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-proofs/counter-add-2-semi-alt-OJ4.wvr.bpl [2021-02-19 22:51:13,171 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-proofs/counter-add-2-semi-alt-OJ4.wvr.bpl' [2021-02-19 22:51:13,196 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-19 22:51:13,203 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-19 22:51:13,205 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-02-19 22:51:13,205 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-02-19 22:51:13,205 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-02-19 22:51:13,216 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "counter-add-2-semi-alt-OJ4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 10:51:13" (1/1) ... [2021-02-19 22:51:13,222 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "counter-add-2-semi-alt-OJ4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 10:51:13" (1/1) ... [2021-02-19 22:51:13,229 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-02-19 22:51:13,234 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-19 22:51:13,234 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-19 22:51:13,234 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-19 22:51:13,241 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "counter-add-2-semi-alt-OJ4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 10:51:13" (1/1) ... [2021-02-19 22:51:13,241 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "counter-add-2-semi-alt-OJ4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 10:51:13" (1/1) ... [2021-02-19 22:51:13,242 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "counter-add-2-semi-alt-OJ4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 10:51:13" (1/1) ... [2021-02-19 22:51:13,242 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "counter-add-2-semi-alt-OJ4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 10:51:13" (1/1) ... [2021-02-19 22:51:13,245 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "counter-add-2-semi-alt-OJ4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 10:51:13" (1/1) ... [2021-02-19 22:51:13,247 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "counter-add-2-semi-alt-OJ4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 10:51:13" (1/1) ... [2021-02-19 22:51:13,248 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "counter-add-2-semi-alt-OJ4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 10:51:13" (1/1) ... [2021-02-19 22:51:13,249 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-19 22:51:13,252 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-19 22:51:13,252 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-19 22:51:13,252 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-19 22:51:13,254 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "counter-add-2-semi-alt-OJ4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 10:51:13" (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 [2021-02-19 22:51:13,313 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-02-19 22:51:13,313 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-02-19 22:51:13,313 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-02-19 22:51:13,313 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-02-19 22:51:13,313 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-02-19 22:51:13,313 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-02-19 22:51:13,314 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-02-19 22:51:13,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-19 22:51:13,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-19 22:51:13,315 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-02-19 22:51:13,572 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-19 22:51:13,573 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-19 22:51:13,575 INFO L202 PluginConnector]: Adding new model counter-add-2-semi-alt-OJ4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 10:51:13 BoogieIcfgContainer [2021-02-19 22:51:13,575 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-19 22:51:13,576 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-19 22:51:13,576 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-19 22:51:13,579 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-19 22:51:13,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "counter-add-2-semi-alt-OJ4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 10:51:13" (1/2) ... [2021-02-19 22:51:13,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f02c3f5 and model type counter-add-2-semi-alt-OJ4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 10:51:13, skipping insertion in model container [2021-02-19 22:51:13,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "counter-add-2-semi-alt-OJ4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 10:51:13" (2/2) ... [2021-02-19 22:51:13,581 INFO L111 eAbstractionObserver]: Analyzing ICFG counter-add-2-semi-alt-OJ4.wvr.bpl [2021-02-19 22:51:13,599 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-02-19 22:51:13,600 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-19 22:51:13,603 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-19 22:51:13,604 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-02-19 22:51:13,645 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-02-19 22:51:13,669 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 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 [2021-02-19 22:51:13,723 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-19 22:51:13,723 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-19 22:51:13,723 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-19 22:51:13,723 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-19 22:51:13,723 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-19 22:51:13,723 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-19 22:51:13,723 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-19 22:51:13,723 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-19 22:51:13,816 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 22:51:13,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 22:51:13,822 INFO L82 PathProgramCache]: Analyzing trace with hash -1121195020, now seen corresponding path program 1 times [2021-02-19 22:51:13,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 22:51:13,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665075158] [2021-02-19 22:51:13,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 22:51:13,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 22:51:14,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 22:51:14,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665075158] [2021-02-19 22:51:14,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 22:51:14,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-19 22:51:14,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976022865] [2021-02-19 22:51:14,179 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-19 22:51:14,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 22:51:14,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-19 22:51:14,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-02-19 22:51:14,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-02-19 22:51:14,194 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-02-19 22:51:14,197 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 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) [2021-02-19 22:51:14,197 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-02-19 22:51:14,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-19 22:51:14,385 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-19 22:51:14,385 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 22:51:14,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 22:51:14,386 INFO L82 PathProgramCache]: Analyzing trace with hash -1057113994, now seen corresponding path program 1 times [2021-02-19 22:51:14,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 22:51:14,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960433619] [2021-02-19 22:51:14,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 22:51:14,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 22:51:14,517 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 22:51:14,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960433619] [2021-02-19 22:51:14,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870655911] [2021-02-19 22:51:14,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 22:51:14,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 22:51:14,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 13 conjunts are in the unsatisfiable core [2021-02-19 22:51:14,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 22:51:14,896 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 22:51:14,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 22:51:14,897 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-02-19 22:51:14,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152006177] [2021-02-19 22:51:14,902 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-19 22:51:14,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 22:51:14,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-19 22:51:14,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2021-02-19 22:51:14,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-02-19 22:51:14,905 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-02-19 22:51:14,906 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 16 states have internal predecessors, (32), 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) [2021-02-19 22:51:14,907 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-02-19 22:51:14,907 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-02-19 22:51:15,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-19 22:51:15,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-19 22:51:15,418 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 22:51:15,419 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 22:51:15,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 22:51:15,419 INFO L82 PathProgramCache]: Analyzing trace with hash 916856118, now seen corresponding path program 1 times [2021-02-19 22:51:15,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 22:51:15,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326020855] [2021-02-19 22:51:15,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 22:51:15,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 22:51:15,571 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 22:51:15,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326020855] [2021-02-19 22:51:15,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085124037] [2021-02-19 22:51:15,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 22:51:15,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 22:51:15,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 21 conjunts are in the unsatisfiable core [2021-02-19 22:51:15,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 22:51:15,958 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 22:51:15,959 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 22:51:15,959 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 19 [2021-02-19 22:51:15,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989659168] [2021-02-19 22:51:15,959 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-02-19 22:51:15,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 22:51:15,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-02-19 22:51:15,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2021-02-19 22:51:15,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-02-19 22:51:15,960 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-02-19 22:51:15,960 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.0) internal successors, (40), 19 states have internal predecessors, (40), 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) [2021-02-19 22:51:15,960 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-02-19 22:51:15,961 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2021-02-19 22:51:15,961 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-02-19 22:51:16,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-19 22:51:16,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-19 22:51:16,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-02-19 22:51:17,206 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 22:51:17,210 INFO L202 PluginConnector]: Adding new model counter-add-2-semi-alt-OJ4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.02 10:51:17 BasicIcfg [2021-02-19 22:51:17,210 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-19 22:51:17,211 INFO L168 Benchmark]: Toolchain (without parser) took 4011.87 ms. Allocated memory was 255.9 MB in the beginning and 400.6 MB in the end (delta: 144.7 MB). Free memory was 236.8 MB in the beginning and 272.1 MB in the end (delta: -35.3 MB). Peak memory consumption was 109.6 MB. Max. memory is 16.0 GB. [2021-02-19 22:51:17,215 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.15 ms. Allocated memory is still 255.9 MB. Free memory is still 237.9 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-02-19 22:51:17,216 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.74 ms. Allocated memory is still 255.9 MB. Free memory was 236.3 MB in the beginning and 234.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-02-19 22:51:17,216 INFO L168 Benchmark]: Boogie Preprocessor took 16.64 ms. Allocated memory is still 255.9 MB. Free memory was 234.8 MB in the beginning and 233.9 MB in the end (delta: 950.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-02-19 22:51:17,216 INFO L168 Benchmark]: RCFGBuilder took 322.71 ms. Allocated memory is still 255.9 MB. Free memory was 233.9 MB in the beginning and 240.6 MB in the end (delta: -6.7 MB). Peak memory consumption was 20.3 MB. Max. memory is 16.0 GB. [2021-02-19 22:51:17,216 INFO L168 Benchmark]: TraceAbstraction took 3634.20 ms. Allocated memory was 255.9 MB in the beginning and 400.6 MB in the end (delta: 144.7 MB). Free memory was 240.1 MB in the beginning and 272.1 MB in the end (delta: -32.0 MB). Peak memory consumption was 112.3 MB. Max. memory is 16.0 GB. [2021-02-19 22:51:17,217 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 255.9 MB. Free memory is still 237.9 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 25.74 ms. Allocated memory is still 255.9 MB. Free memory was 236.3 MB in the beginning and 234.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 16.64 ms. Allocated memory is still 255.9 MB. Free memory was 234.8 MB in the beginning and 233.9 MB in the end (delta: 950.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 322.71 ms. Allocated memory is still 255.9 MB. Free memory was 233.9 MB in the beginning and 240.6 MB in the end (delta: -6.7 MB). Peak memory consumption was 20.3 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3634.20 ms. Allocated memory was 255.9 MB in the beginning and 400.6 MB in the end (delta: 144.7 MB). Free memory was 240.1 MB in the beginning and 272.1 MB in the end (delta: -32.0 MB). Peak memory consumption was 112.3 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 50]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.5s, OverallIterations: 3, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 91 NumberOfCodeBlocks, 91 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 86 ConstructedInterpolants, 0 QuantifiedInterpolants, 18946 SizeOfPredicates, 10 NumberOfNonLiveVariables, 77 ConjunctsInSsa, 34 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 1/12 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...