/usr/bin/java -Xmx8000000000 -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-None-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-5.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-a47a088281b0b97d17910950432b7c5b5bc3adeb-a47a088 [2021-07-13 22:29:26,737 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-13 22:29:26,739 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-13 22:29:26,779 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-13 22:29:26,853 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-None-NoLbe.epf [2021-07-13 22:29:26,887 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-13 22:29:26,887 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-13 22:29:26,888 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-13 22:29:26,888 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-13 22:29:26,891 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-13 22:29:26,891 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-13 22:29:26,891 INFO L138 SettingsManager]: * Use SBE=true [2021-07-13 22:29:26,891 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-13 22:29:26,892 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-13 22:29:26,892 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-13 22:29:26,892 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-13 22:29:26,893 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-13 22:29:26,893 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-13 22:29:26,893 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-13 22:29:26,893 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-13 22:29:26,893 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-13 22:29:26,893 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-13 22:29:26,894 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-13 22:29:26,894 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-13 22:29:26,894 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-13 22:29:26,894 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-13 22:29:26,894 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-13 22:29:26,894 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-13 22:29:26,895 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-13 22:29:26,895 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-13 22:29:26,895 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-13 22:29:26,895 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-13 22:29:26,895 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-13 22:29:26,896 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-13 22:29:26,896 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-13 22:29:26,896 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-07-13 22:29:26,896 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-13 22:29:26,897 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-13 22:29:27,213 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-13 22:29:27,238 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-13 22:29:27,240 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-13 22:29:27,241 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-13 22:29:27,242 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-13 22:29:27,243 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-5.wvr.bpl [2021-07-13 22:29:27,243 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-5.wvr.bpl' [2021-07-13 22:29:27,266 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-13 22:29:27,267 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-13 22:29:27,277 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-13 22:29:27,277 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-13 22:29:27,277 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-13 22:29:27,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 10:29:27" (1/1) ... [2021-07-13 22:29:27,299 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 10:29:27" (1/1) ... [2021-07-13 22:29:27,306 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-13 22:29:27,307 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-13 22:29:27,308 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-13 22:29:27,308 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-13 22:29:27,314 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 10:29:27" (1/1) ... [2021-07-13 22:29:27,314 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 10:29:27" (1/1) ... [2021-07-13 22:29:27,315 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 10:29:27" (1/1) ... [2021-07-13 22:29:27,315 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 10:29:27" (1/1) ... [2021-07-13 22:29:27,318 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 10:29:27" (1/1) ... [2021-07-13 22:29:27,321 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 10:29:27" (1/1) ... [2021-07-13 22:29:27,322 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 10:29:27" (1/1) ... [2021-07-13 22:29:27,323 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-13 22:29:27,325 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-13 22:29:27,325 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-13 22:29:27,326 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-13 22:29:27,327 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 10:29:27" (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 [2021-07-13 22:29:27,403 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-13 22:29:27,403 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-13 22:29:27,404 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-13 22:29:27,404 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-13 22:29:27,404 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-13 22:29:27,404 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-13 22:29:27,404 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-13 22:29:27,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-13 22:29:27,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-13 22:29:27,405 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-07-13 22:29:27,405 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-07-13 22:29:27,406 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-07-13 22:29:27,407 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-13 22:29:27,580 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-13 22:29:27,580 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-07-13 22:29:27,582 INFO L202 PluginConnector]: Adding new model misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:29:27 BoogieIcfgContainer [2021-07-13 22:29:27,582 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-13 22:29:27,583 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-13 22:29:27,584 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-13 22:29:27,586 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-13 22:29:27,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 10:29:27" (1/2) ... [2021-07-13 22:29:27,587 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43677b99 and model type misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:29:27, skipping insertion in model container [2021-07-13 22:29:27,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:29:27" (2/2) ... [2021-07-13 22:29:27,588 INFO L111 eAbstractionObserver]: Analyzing ICFG misc-5.wvr.bpl [2021-07-13 22:29:27,593 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-13 22:29:27,593 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-13 22:29:27,593 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-13 22:29:27,594 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-13 22:29:27,622 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-07-13 22:29:27,658 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 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 [2021-07-13 22:29:27,751 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-13 22:29:27,752 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-13 22:29:27,752 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-13 22:29:27,752 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-13 22:29:27,752 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-13 22:29:27,752 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-13 22:29:27,752 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-13 22:29:27,752 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-13 22:29:27,760 INFO L110 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 23 transitions, 70 flow [2021-07-13 22:29:27,775 INFO L132 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 87 states, 86 states have (on average 2.616279069767442) internal successors, (225), 86 states have internal predecessors, (225), 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) [2021-07-13 22:29:27,783 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 22:29:27,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 22:29:27,788 INFO L82 PathProgramCache]: Analyzing trace with hash 1499982690, now seen corresponding path program 1 times [2021-07-13 22:29:27,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 22:29:27,795 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382204814] [2021-07-13 22:29:27,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 22:29:27,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 22:29:27,924 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-13 22:29:27,924 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 22:29:27,924 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382204814] [2021-07-13 22:29:27,925 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382204814] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 22:29:27,925 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 22:29:27,925 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-13 22:29:27,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053112321] [2021-07-13 22:29:27,929 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-13 22:29:27,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 22:29:27,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-13 22:29:27,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-13 22:29:27,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-13 22:29:27,941 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-13 22:29:27,942 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 22:29:27,942 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-13 22:29:27,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-13 22:29:27,961 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-13 22:29:27,961 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 22:29:27,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 22:29:27,962 INFO L82 PathProgramCache]: Analyzing trace with hash -1029145306, now seen corresponding path program 2 times [2021-07-13 22:29:27,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 22:29:27,962 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945148113] [2021-07-13 22:29:27,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 22:29:27,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 22:29:28,010 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 22:29:28,011 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 22:29:28,011 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945148113] [2021-07-13 22:29:28,011 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945148113] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 22:29:28,011 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168781244] [2021-07-13 22:29:28,012 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2021-07-13 22:29:28,056 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-13 22:29:28,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 22:29:28,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 6 conjunts are in the unsatisfiable core [2021-07-13 22:29:28,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 22:29:28,202 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 22:29:28,203 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1168781244] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 22:29:28,203 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 22:29:28,203 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-07-13 22:29:28,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524313880] [2021-07-13 22:29:28,204 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-13 22:29:28,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 22:29:28,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-13 22:29:28,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-07-13 22:29:28,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-13 22:29:28,206 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-13 22:29:28,206 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 22:29:28,206 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-13 22:29:28,206 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-13 22:29:28,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-13 22:29:28,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-13 22:29:28,508 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 22:29:28,509 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 22:29:28,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 22:29:28,510 INFO L82 PathProgramCache]: Analyzing trace with hash 1899773994, now seen corresponding path program 3 times [2021-07-13 22:29:28,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 22:29:28,510 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847858359] [2021-07-13 22:29:28,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 22:29:28,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 22:29:28,649 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 22:29:28,650 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 22:29:28,650 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847858359] [2021-07-13 22:29:28,650 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847858359] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 22:29:28,650 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699829255] [2021-07-13 22:29:28,651 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 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 [2021-07-13 22:29:28,694 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-07-13 22:29:28,694 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 22:29:28,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 8 conjunts are in the unsatisfiable core [2021-07-13 22:29:28,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 22:29:28,929 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 22:29:28,929 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [699829255] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 22:29:28,929 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 22:29:28,929 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-07-13 22:29:28,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391823446] [2021-07-13 22:29:28,931 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-13 22:29:28,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 22:29:28,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-13 22:29:28,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-07-13 22:29:28,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-13 22:29:28,934 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-13 22:29:28,935 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 10 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 22:29:28,935 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-13 22:29:28,935 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-13 22:29:28,935 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-13 22:29:29,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-13 22:29:29,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-13 22:29:29,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-13 22:29:29,325 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 22:29:29,325 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 22:29:29,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 22:29:29,326 INFO L82 PathProgramCache]: Analyzing trace with hash 1517216046, now seen corresponding path program 4 times [2021-07-13 22:29:29,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 22:29:29,326 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90685050] [2021-07-13 22:29:29,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 22:29:29,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 22:29:29,483 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 22:29:29,483 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 22:29:29,483 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90685050] [2021-07-13 22:29:29,483 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90685050] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 22:29:29,484 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1447491344] [2021-07-13 22:29:29,484 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 22:29:29,526 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-07-13 22:29:29,526 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 22:29:29,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 11 conjunts are in the unsatisfiable core [2021-07-13 22:29:29,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 22:29:29,773 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 22:29:29,778 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1447491344] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 22:29:29,778 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 22:29:29,778 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-07-13 22:29:29,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951313218] [2021-07-13 22:29:29,779 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-07-13 22:29:29,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 22:29:29,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-07-13 22:29:29,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2021-07-13 22:29:29,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-13 22:29:29,780 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-13 22:29:29,780 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 14 states have internal predecessors, (42), 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) [2021-07-13 22:29:29,780 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-13 22:29:29,780 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-13 22:29:29,780 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-13 22:29:29,780 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-13 22:29:30,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-13 22:29:30,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-13 22:29:30,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-13 22:29:30,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-13 22:29:30,268 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 22:29:30,269 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 22:29:30,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 22:29:30,270 INFO L82 PathProgramCache]: Analyzing trace with hash 699710774, now seen corresponding path program 5 times [2021-07-13 22:29:30,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 22:29:30,270 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913418416] [2021-07-13 22:29:30,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 22:29:30,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 22:29:31,098 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 1 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 22:29:31,098 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 22:29:31,098 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913418416] [2021-07-13 22:29:31,098 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913418416] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 22:29:31,098 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775521184] [2021-07-13 22:29:31,099 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 22:29:31,144 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-07-13 22:29:31,145 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 22:29:31,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 16 conjunts are in the unsatisfiable core [2021-07-13 22:29:31,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 22:29:31,824 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 1 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 22:29:31,824 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [775521184] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 22:29:31,824 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 22:29:31,825 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2021-07-13 22:29:31,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62227750] [2021-07-13 22:29:31,826 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-07-13 22:29:31,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 22:29:31,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-07-13 22:29:31,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=449, Unknown=0, NotChecked=0, Total=552 [2021-07-13 22:29:31,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-13 22:29:31,834 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-13 22:29:31,834 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 2.4583333333333335) internal successors, (59), 23 states have internal predecessors, (59), 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) [2021-07-13 22:29:31,834 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-13 22:29:31,834 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-13 22:29:31,834 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-13 22:29:31,834 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-13 22:29:31,834 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-13 22:29:32,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-13 22:29:32,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-13 22:29:32,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-13 22:29:32,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-13 22:29:32,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-13 22:29:32,871 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-07-13 22:29:32,871 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 22:29:32,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 22:29:32,873 INFO L82 PathProgramCache]: Analyzing trace with hash 377358402, now seen corresponding path program 6 times [2021-07-13 22:29:32,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 22:29:32,873 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619923094] [2021-07-13 22:29:32,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 22:29:33,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown