/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-Lockstep.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/bench/exp2x4.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-b7a4f01caba76767183cf06280be652b0b124764-b7a4f01 [2021-06-07 14:50:16,470 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-07 14:50:16,473 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-07 14:50:16,510 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-07 14:50:16,511 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-07 14:50:16,514 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-07 14:50:16,516 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-07 14:50:16,521 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-07 14:50:16,523 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-07 14:50:16,527 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-07 14:50:16,527 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-07 14:50:16,529 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-07 14:50:16,529 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-07 14:50:16,530 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-07 14:50:16,532 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-07 14:50:16,533 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-07 14:50:16,535 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-07 14:50:16,536 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-07 14:50:16,538 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-07 14:50:16,543 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-07 14:50:16,544 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-07 14:50:16,545 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-07 14:50:16,546 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-07 14:50:16,547 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-07 14:50:16,553 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-07 14:50:16,553 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-07 14:50:16,554 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-07 14:50:16,555 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-07 14:50:16,555 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-07 14:50:16,556 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-07 14:50:16,556 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-07 14:50:16,557 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-07 14:50:16,558 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-07 14:50:16,559 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-07 14:50:16,560 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-07 14:50:16,560 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-07 14:50:16,560 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-07 14:50:16,561 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-07 14:50:16,561 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-07 14:50:16,561 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-07 14:50:16,562 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-07 14:50:16,563 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-Lockstep.epf [2021-06-07 14:50:16,597 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-07 14:50:16,597 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-07 14:50:16,598 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-07 14:50:16,598 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-07 14:50:16,600 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-07 14:50:16,600 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-07 14:50:16,600 INFO L138 SettingsManager]: * Use SBE=true [2021-06-07 14:50:16,601 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-07 14:50:16,601 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-07 14:50:16,601 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-07 14:50:16,601 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-07 14:50:16,602 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-07 14:50:16,602 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-07 14:50:16,602 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-07 14:50:16,602 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-07 14:50:16,602 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-07 14:50:16,602 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-07 14:50:16,603 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-07 14:50:16,603 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-07 14:50:16,603 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-07 14:50:16,603 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-07 14:50:16,603 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-07 14:50:16,603 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-07 14:50:16,603 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-07 14:50:16,604 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-07 14:50:16,604 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-07 14:50:16,604 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-07 14:50:16,604 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-07 14:50:16,604 INFO L138 SettingsManager]: * DFS Order used in POR=PSEUDO_LOCKSTEP [2021-06-07 14:50:16,604 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-07 14:50:16,604 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-07 14:50:16,605 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-06-07 14:50:16,605 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-07 14:50:16,605 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-06-07 14:50:16,605 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-07 14:50:16,916 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-07 14:50:16,933 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-07 14:50:16,935 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-07 14:50:16,936 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-07 14:50:16,937 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-07 14:50:16,937 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/bench/exp2x4.wvr.bpl [2021-06-07 14:50:16,938 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/bench/exp2x4.wvr.bpl' [2021-06-07 14:50:16,963 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-07 14:50:16,965 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-07 14:50:16,966 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-07 14:50:16,966 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-07 14:50:16,966 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-07 14:50:16,977 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "exp2x4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.06 02:50:16" (1/1) ... [2021-06-07 14:50:16,985 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "exp2x4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.06 02:50:16" (1/1) ... [2021-06-07 14:50:16,992 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-07 14:50:16,993 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-07 14:50:16,994 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-07 14:50:16,994 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-07 14:50:17,000 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "exp2x4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.06 02:50:16" (1/1) ... [2021-06-07 14:50:17,000 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "exp2x4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.06 02:50:16" (1/1) ... [2021-06-07 14:50:17,002 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "exp2x4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.06 02:50:16" (1/1) ... [2021-06-07 14:50:17,002 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "exp2x4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.06 02:50:16" (1/1) ... [2021-06-07 14:50:17,005 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "exp2x4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.06 02:50:16" (1/1) ... [2021-06-07 14:50:17,009 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "exp2x4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.06 02:50:16" (1/1) ... [2021-06-07 14:50:17,010 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "exp2x4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.06 02:50:16" (1/1) ... [2021-06-07 14:50:17,012 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-07 14:50:17,013 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-07 14:50:17,014 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-07 14:50:17,014 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-07 14:50:17,015 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "exp2x4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.06 02:50:16" (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 [2021-06-07 14:50:17,089 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-07 14:50:17,089 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-07 14:50:17,089 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-07 14:50:17,089 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-07 14:50:17,090 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-07 14:50:17,090 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-07 14:50:17,090 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-07 14:50:17,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-07 14:50:17,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-07 14:50:17,090 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-07 14:50:17,090 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-07 14:50:17,090 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-07 14:50:17,091 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-06-07 14:50:17,091 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-06-07 14:50:17,091 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-06-07 14:50:17,092 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-07 14:50:17,277 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-07 14:50:17,277 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-07 14:50:17,278 INFO L202 PluginConnector]: Adding new model exp2x4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.06 02:50:17 BoogieIcfgContainer [2021-06-07 14:50:17,278 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-07 14:50:17,280 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-07 14:50:17,280 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-07 14:50:17,282 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-07 14:50:17,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "exp2x4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.06 02:50:16" (1/2) ... [2021-06-07 14:50:17,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@757f443f and model type exp2x4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.06 02:50:17, skipping insertion in model container [2021-06-07 14:50:17,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "exp2x4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.06 02:50:17" (2/2) ... [2021-06-07 14:50:17,284 INFO L111 eAbstractionObserver]: Analyzing ICFG exp2x4.wvr.bpl [2021-06-07 14:50:17,290 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-07 14:50:17,290 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-07 14:50:17,290 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-07 14:50:17,291 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-07 14:50:17,349 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-06-07 14:50:17,371 INFO L255 AbstractCegarLoop]: Starting to check reachability of 5 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 [2021-06-07 14:50:17,446 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-07 14:50:17,447 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-07 14:50:17,447 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-07 14:50:17,447 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-07 14:50:17,447 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-07 14:50:17,447 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-07 14:50:17,447 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-07 14:50:17,447 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-07 14:50:17,617 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-07 14:50:17,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-07 14:50:17,622 INFO L82 PathProgramCache]: Analyzing trace with hash -808091987, now seen corresponding path program 1 times [2021-06-07 14:50:17,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-07 14:50:17,628 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948748751] [2021-06-07 14:50:17,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-07 14:50:17,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-07 14:50:17,747 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-06-07 14:50:17,748 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-07 14:50:17,748 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948748751] [2021-06-07 14:50:17,749 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948748751] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-07 14:50:17,749 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-07 14:50:17,749 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-07 14:50:17,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710153537] [2021-06-07 14:50:17,753 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-07 14:50:17,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-07 14:50:17,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-07 14:50:17,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-07 14:50:17,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-07 14:50:17,769 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-07 14:50:17,772 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 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) [2021-06-07 14:50:17,773 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-07 14:50:17,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-07 14:50:17,903 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-07 14:50:17,903 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-07 14:50:17,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-07 14:50:17,904 INFO L82 PathProgramCache]: Analyzing trace with hash 799570743, now seen corresponding path program 1 times [2021-06-07 14:50:17,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-07 14:50:17,905 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953065011] [2021-06-07 14:50:17,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-07 14:50:17,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-07 14:50:18,025 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-07 14:50:18,026 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-07 14:50:18,026 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953065011] [2021-06-07 14:50:18,026 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953065011] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 14:50:18,027 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426229358] [2021-06-07 14:50:18,027 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 [2021-06-07 14:50:18,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-07 14:50:18,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-07 14:50:18,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-07 14:50:18,473 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-07 14:50:18,474 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426229358] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 14:50:18,474 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-07 14:50:18,474 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 15 [2021-06-07 14:50:18,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268645439] [2021-06-07 14:50:18,477 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-07 14:50:18,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-07 14:50:18,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-07 14:50:18,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2021-06-07 14:50:18,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-07 14:50:18,486 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-07 14:50:18,486 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 4.0625) internal successors, (65), 15 states have internal predecessors, (65), 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) [2021-06-07 14:50:18,486 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-07 14:50:18,486 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-07 14:50:19,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-07 14:50:19,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-07 14:50:19,693 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-07 14:50:19,694 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-07 14:50:19,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-07 14:50:19,694 INFO L82 PathProgramCache]: Analyzing trace with hash 819125241, now seen corresponding path program 2 times [2021-06-07 14:50:19,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-07 14:50:19,695 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718298933] [2021-06-07 14:50:19,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-07 14:50:19,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-07 14:50:19,844 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 29 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-07 14:50:19,844 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-07 14:50:19,844 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718298933] [2021-06-07 14:50:19,845 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718298933] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 14:50:19,845 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514345057] [2021-06-07 14:50:19,845 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 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 [2021-06-07 14:50:19,899 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-07 14:50:19,899 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-07 14:50:19,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-07 14:50:19,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-07 14:50:20,125 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 28 proven. 12 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-06-07 14:50:20,125 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1514345057] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 14:50:20,126 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-07 14:50:20,126 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 15 [2021-06-07 14:50:20,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197449436] [2021-06-07 14:50:20,126 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-07 14:50:20,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-07 14:50:20,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-07 14:50:20,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2021-06-07 14:50:20,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-07 14:50:20,128 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-07 14:50:20,128 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 5.125) internal successors, (82), 15 states have internal predecessors, (82), 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) [2021-06-07 14:50:20,128 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-07 14:50:20,128 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2021-06-07 14:50:20,128 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-07 14:50:20,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-07 14:50:20,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-07 14:50:20,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-07 14:50:20,964 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-07 14:50:20,965 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-07 14:50:20,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-07 14:50:20,966 INFO L82 PathProgramCache]: Analyzing trace with hash -425028597, now seen corresponding path program 3 times [2021-06-07 14:50:20,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-07 14:50:20,966 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490829705] [2021-06-07 14:50:20,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-07 14:50:21,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-07 14:50:21,152 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 40 proven. 43 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-07 14:50:21,152 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-07 14:50:21,153 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490829705] [2021-06-07 14:50:21,153 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490829705] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 14:50:21,153 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [495005395] [2021-06-07 14:50:21,153 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 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 [2021-06-07 14:50:21,204 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-06-07 14:50:21,204 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-07 14:50:21,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 11 conjunts are in the unsatisfiable core [2021-06-07 14:50:21,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-07 14:50:21,657 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 56 proven. 20 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-06-07 14:50:21,658 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [495005395] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 14:50:21,658 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-07 14:50:21,658 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 23 [2021-06-07 14:50:21,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580793040] [2021-06-07 14:50:21,659 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-06-07 14:50:21,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-07 14:50:21,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-06-07 14:50:21,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=474, Unknown=0, NotChecked=0, Total=552 [2021-06-07 14:50:21,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-07 14:50:21,660 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-07 14:50:21,660 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 4.541666666666667) internal successors, (109), 23 states have internal predecessors, (109), 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) [2021-06-07 14:50:21,661 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-07 14:50:21,661 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2021-06-07 14:50:21,661 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-06-07 14:50:21,661 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-07 14:50:23,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-07 14:50:23,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-07 14:50:23,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-07 14:50:23,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-07 14:50:23,372 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-07 14:50:23,373 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-07 14:50:23,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-07 14:50:23,373 INFO L82 PathProgramCache]: Analyzing trace with hash -1242375249, now seen corresponding path program 4 times [2021-06-07 14:50:23,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-07 14:50:23,373 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984634735] [2021-06-07 14:50:23,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-07 14:50:23,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-07 14:50:23,503 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 41 proven. 76 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-06-07 14:50:23,503 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-07 14:50:23,503 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984634735] [2021-06-07 14:50:23,503 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984634735] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 14:50:23,503 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907221755] [2021-06-07 14:50:23,503 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 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 [2021-06-07 14:50:23,543 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-07 14:50:23,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-07 14:50:23,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 19 conjunts are in the unsatisfiable core [2021-06-07 14:50:23,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-07 14:50:24,413 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 65 proven. 76 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-07 14:50:24,414 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1907221755] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 14:50:24,414 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-07 14:50:24,414 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 19] total 23 [2021-06-07 14:50:24,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611272463] [2021-06-07 14:50:24,415 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-06-07 14:50:24,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-07 14:50:24,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-06-07 14:50:24,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=467, Unknown=0, NotChecked=0, Total=552 [2021-06-07 14:50:24,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-07 14:50:24,416 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-07 14:50:24,416 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 4.375) internal successors, (105), 23 states have internal predecessors, (105), 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) [2021-06-07 14:50:24,416 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-07 14:50:24,416 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2021-06-07 14:50:24,416 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2021-06-07 14:50:24,416 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-06-07 14:50:24,416 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-07 14:50:27,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-07 14:50:27,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-07 14:50:27,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-07 14:50:27,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-07 14:50:27,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-07 14:50:27,311 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-07 14:50:27,311 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-07 14:50:27,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-07 14:50:27,311 INFO L82 PathProgramCache]: Analyzing trace with hash 1724473273, now seen corresponding path program 5 times [2021-06-07 14:50:27,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-07 14:50:27,312 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087086649] [2021-06-07 14:50:27,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-07 14:50:27,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-07 14:50:27,428 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 19 proven. 22 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2021-06-07 14:50:27,429 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-07 14:50:27,429 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087086649] [2021-06-07 14:50:27,429 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087086649] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 14:50:27,429 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973311887] [2021-06-07 14:50:27,429 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-07 14:50:27,486 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-06-07 14:50:27,486 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-07 14:50:27,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-07 14:50:27,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-07 14:50:29,073 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 143 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-07 14:50:29,073 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [973311887] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 14:50:29,073 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-07 14:50:29,073 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 27] total 29 [2021-06-07 14:50:29,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722571615] [2021-06-07 14:50:29,074 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-06-07 14:50:29,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-07 14:50:29,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-06-07 14:50:29,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=690, Unknown=0, NotChecked=0, Total=870 [2021-06-07 14:50:29,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-07 14:50:29,075 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-07 14:50:29,075 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 3.4) internal successors, (102), 29 states have internal predecessors, (102), 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) [2021-06-07 14:50:29,075 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-07 14:50:29,075 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2021-06-07 14:50:29,075 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2021-06-07 14:50:29,076 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-06-07 14:50:29,076 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 42 states. [2021-06-07 14:50:29,076 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-07 14:50:32,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-07 14:50:32,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-07 14:50:32,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-07 14:50:32,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-07 14:50:32,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-06-07 14:50:32,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-07 14:50:32,701 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-07 14:50:32,701 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-07 14:50:32,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-07 14:50:32,702 INFO L82 PathProgramCache]: Analyzing trace with hash -1670206204, now seen corresponding path program 6 times [2021-06-07 14:50:32,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-07 14:50:32,704 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106813207] [2021-06-07 14:50:32,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-07 14:50:32,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-07 14:50:32,963 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 69 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2021-06-07 14:50:32,963 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-07 14:50:32,963 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106813207] [2021-06-07 14:50:32,963 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106813207] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 14:50:32,963 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343446779] [2021-06-07 14:50:32,963 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-07 14:50:33,023 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-06-07 14:50:33,023 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-07 14:50:33,025 WARN L261 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 101 conjunts are in the unsatisfiable core [2021-06-07 14:50:33,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-07 14:50:38,827 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2021-06-07 14:50:40,950 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2021-06-07 14:50:42,024 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2021-06-07 14:50:44,223 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2021-06-07 14:50:46,311 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2021-06-07 14:50:49,028 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2021-06-07 14:50:51,432 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2021-06-07 14:50:55,076 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2021-06-07 14:50:58,470 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2021-06-07 14:51:03,469 WARN L205 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2021-06-07 14:51:07,969 WARN L205 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2021-06-07 14:51:17,851 WARN L205 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2021-06-07 14:51:22,229 WARN L205 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2021-06-07 14:51:38,973 WARN L205 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2021-06-07 14:51:49,741 WARN L205 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2021-06-07 14:52:08,776 WARN L205 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2021-06-07 14:52:30,522 WARN L205 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-06-07 14:52:53,662 WARN L205 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2021-06-07 14:53:13,275 WARN L205 SmtUtils]: Spent 404.00 ms on a formula simplification that was a NOOP. DAG size: 219 [2021-06-07 14:53:41,946 WARN L205 SmtUtils]: Spent 471.00 ms on a formula simplification that was a NOOP. DAG size: 225 [2021-06-07 14:53:54,361 WARN L205 SmtUtils]: Spent 425.00 ms on a formula simplification that was a NOOP. DAG size: 228 [2021-06-07 14:54:12,149 WARN L205 SmtUtils]: Spent 492.00 ms on a formula simplification that was a NOOP. DAG size: 231 [2021-06-07 14:54:26,610 WARN L205 SmtUtils]: Spent 783.00 ms on a formula simplification that was a NOOP. DAG size: 237 [2021-06-07 14:54:46,180 WARN L205 SmtUtils]: Spent 727.00 ms on a formula simplification that was a NOOP. DAG size: 240 [2021-06-07 14:54:46,460 WARN L348 FreeRefinementEngine]: Global settings require throwing the following exception [2021-06-07 14:54:46,660 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-07 14:54:46,661 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: Possible infinite loop detected aux_div_aux_div_x2_10_97 already exists at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.SolveForSubjectUtils.tryToHandleDivModSubterm(SolveForSubjectUtils.java:198) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.SolveForSubjectUtils.findTreatableDivModSubterm(SolveForSubjectUtils.java:585) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.SolveForSubjectUtils.findTreatableDivModSubterm(SolveForSubjectUtils.java:573) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.SolveForSubjectUtils.solveForSubject(SolveForSubjectUtils.java:76) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.PolynomialRelation.solveForSubject(PolynomialRelation.java:451) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.SolveForSubjectUtils.tryToHandleDivModSubterm(SolveForSubjectUtils.java:212) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.SolveForSubjectUtils.findTreatableDivModSubterm(SolveForSubjectUtils.java:585) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.SolveForSubjectUtils.findTreatableDivModSubterm(SolveForSubjectUtils.java:573) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.SolveForSubjectUtils.solveForSubject(SolveForSubjectUtils.java:76) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.PolynomialRelation.solveForSubject(PolynomialRelation.java:451) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionDer$DerHelperMcsbr.solveForSubject(DualJunctionDer.java:408) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionDer$DerHelperMcsbr.solveForSubject(DualJunctionDer.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionDer$IDerHelper.findBestReplacementSbr(DualJunctionDer.java:312) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionDer$IDerHelper.tryToEliminateSbr(DualJunctionDer.java:328) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionDer.tryToEliminateOne(DualJunctionDer.java:231) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionDer.tryExhaustivelyToEliminate(DualJunctionDer.java:198) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionDer.tryToEliminateOne(DualJunctionDer.java:182) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionDer.tryExhaustivelyToEliminate(DualJunctionDer.java:149) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionDer.tryToEliminate(DualJunctionDer.java:127) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:869) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:835) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:753) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective2(QuantifierPusher.java:384) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:316) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.convert(QuantifierPusher.java:227) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.cacheConvert(TermTransformer.java:131) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer$Convert.walk(TermTransformer.java:79) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.transform(TermTransformer.java:272) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.eliminate(QuantifierPusher.java:144) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.eliminate(QuantifierPusher.java:166) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$LiveVariablesPostprocessorForward.postprocess(TraceCheckSpWp.java:539) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:440) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:201) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:299) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:297) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:190) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:180) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:643) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:374) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:69) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:63) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:364) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:293) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:238) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-06-07 14:54:46,665 INFO L168 Benchmark]: Toolchain (without parser) took 269700.24 ms. Allocated memory was 350.2 MB in the beginning and 687.9 MB in the end (delta: 337.6 MB). Free memory was 329.8 MB in the beginning and 624.5 MB in the end (delta: -294.7 MB). Peak memory consumption was 409.9 MB. Max. memory is 16.0 GB. [2021-06-07 14:54:46,665 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.14 ms. Allocated memory is still 350.2 MB. Free memory was 331.0 MB in the beginning and 330.8 MB in the end (delta: 125.8 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-07 14:54:46,665 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.66 ms. Allocated memory is still 350.2 MB. Free memory was 329.7 MB in the beginning and 328.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-07 14:54:46,665 INFO L168 Benchmark]: Boogie Preprocessor took 18.79 ms. Allocated memory is still 350.2 MB. Free memory was 328.2 MB in the beginning and 327.3 MB in the end (delta: 953.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-07 14:54:46,665 INFO L168 Benchmark]: RCFGBuilder took 265.05 ms. Allocated memory is still 350.2 MB. Free memory was 327.3 MB in the beginning and 315.8 MB in the end (delta: 11.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. [2021-06-07 14:54:46,665 INFO L168 Benchmark]: TraceAbstraction took 269384.51 ms. Allocated memory was 350.2 MB in the beginning and 687.9 MB in the end (delta: 337.6 MB). Free memory was 315.4 MB in the beginning and 624.5 MB in the end (delta: -309.1 MB). Peak memory consumption was 395.2 MB. Max. memory is 16.0 GB. [2021-06-07 14:54:46,666 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 0.14 ms. Allocated memory is still 350.2 MB. Free memory was 331.0 MB in the beginning and 330.8 MB in the end (delta: 125.8 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 26.66 ms. Allocated memory is still 350.2 MB. Free memory was 329.7 MB in the beginning and 328.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 18.79 ms. Allocated memory is still 350.2 MB. Free memory was 328.2 MB in the beginning and 327.3 MB in the end (delta: 953.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 265.05 ms. Allocated memory is still 350.2 MB. Free memory was 327.3 MB in the beginning and 315.8 MB in the end (delta: 11.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. * TraceAbstraction took 269384.51 ms. Allocated memory was 350.2 MB in the beginning and 687.9 MB in the end (delta: 337.6 MB). Free memory was 315.4 MB in the beginning and 624.5 MB in the end (delta: -309.1 MB). Peak memory consumption was 395.2 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: Possible infinite loop detected aux_div_aux_div_x2_10_97 already exists de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: Possible infinite loop detected aux_div_aux_div_x2_10_97 already exists: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.SolveForSubjectUtils.tryToHandleDivModSubterm(SolveForSubjectUtils.java:198) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...