/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-DelaySleep-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/bench/exp2x9.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d47b94137d5c7dd60722882962a90fb345e61909-d47b941 [2021-05-03 18:00:03,814 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-03 18:00:03,816 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-03 18:00:03,845 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-03 18:00:03,845 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-03 18:00:03,848 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-03 18:00:03,850 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-03 18:00:03,854 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-03 18:00:03,856 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-03 18:00:03,860 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-03 18:00:03,861 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-03 18:00:03,862 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-03 18:00:03,862 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-03 18:00:03,864 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-03 18:00:03,865 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-03 18:00:03,866 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-03 18:00:03,868 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-03 18:00:03,869 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-03 18:00:03,871 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-03 18:00:03,876 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-03 18:00:03,877 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-03 18:00:03,877 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-03 18:00:03,878 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-03 18:00:03,879 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-03 18:00:03,881 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-05-03 18:00:03,881 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-05-03 18:00:03,881 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-05-03 18:00:03,882 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-05-03 18:00:03,883 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-05-03 18:00:03,883 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-05-03 18:00:03,883 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-05-03 18:00:03,884 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-05-03 18:00:03,885 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-05-03 18:00:03,885 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-05-03 18:00:03,886 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-05-03 18:00:03,886 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-05-03 18:00:03,886 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-05-03 18:00:03,886 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-05-03 18:00:03,886 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-03 18:00:03,887 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-03 18:00:03,887 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-03 18:00:03,890 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-DelaySleep-NoLbe.epf [2021-05-03 18:00:03,916 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-03 18:00:03,917 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-03 18:00:03,917 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-05-03 18:00:03,917 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-05-03 18:00:03,919 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-03 18:00:03,919 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-03 18:00:03,919 INFO L138 SettingsManager]: * Use SBE=true [2021-05-03 18:00:03,919 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-03 18:00:03,919 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-03 18:00:03,919 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-03 18:00:03,920 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-03 18:00:03,920 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-03 18:00:03,920 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-03 18:00:03,920 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-03 18:00:03,920 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-03 18:00:03,920 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-03 18:00:03,920 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-03 18:00:03,920 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-03 18:00:03,921 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-03 18:00:03,921 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-03 18:00:03,921 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-03 18:00:03,921 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-03 18:00:03,921 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-03 18:00:03,921 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-03 18:00:03,921 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-03 18:00:03,921 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-03 18:00:03,921 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-03 18:00:03,921 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-03 18:00:03,921 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-03 18:00:03,921 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-05-03 18:00:03,922 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-05-03 18:00:03,922 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-03 18:00:03,922 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-05-03 18:00:03,922 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-03 18:00:04,160 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-03 18:00:04,181 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-03 18:00:04,183 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-03 18:00:04,184 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-05-03 18:00:04,191 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-05-03 18:00:04,192 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/bench/exp2x9.wvr.bpl [2021-05-03 18:00:04,192 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/bench/exp2x9.wvr.bpl' [2021-05-03 18:00:04,250 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-03 18:00:04,251 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-03 18:00:04,252 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-05-03 18:00:04,252 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-05-03 18:00:04,252 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-05-03 18:00:04,260 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "exp2x9.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.05 06:00:04" (1/1) ... [2021-05-03 18:00:04,267 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "exp2x9.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.05 06:00:04" (1/1) ... [2021-05-03 18:00:04,282 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-05-03 18:00:04,285 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-03 18:00:04,285 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-03 18:00:04,285 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-03 18:00:04,290 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "exp2x9.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.05 06:00:04" (1/1) ... [2021-05-03 18:00:04,290 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "exp2x9.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.05 06:00:04" (1/1) ... [2021-05-03 18:00:04,291 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "exp2x9.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.05 06:00:04" (1/1) ... [2021-05-03 18:00:04,291 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "exp2x9.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.05 06:00:04" (1/1) ... [2021-05-03 18:00:04,293 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "exp2x9.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.05 06:00:04" (1/1) ... [2021-05-03 18:00:04,295 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "exp2x9.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.05 06:00:04" (1/1) ... [2021-05-03 18:00:04,296 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "exp2x9.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.05 06:00:04" (1/1) ... [2021-05-03 18:00:04,305 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-03 18:00:04,308 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-03 18:00:04,308 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-03 18:00:04,308 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-03 18:00:04,309 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "exp2x9.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.05 06:00:04" (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 [2021-05-03 18:00:04,373 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-05-03 18:00:04,373 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-05-03 18:00:04,373 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-05-03 18:00:04,373 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-05-03 18:00:04,374 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-05-03 18:00:04,374 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-05-03 18:00:04,374 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-05-03 18:00:04,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-03 18:00:04,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-03 18:00:04,374 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-05-03 18:00:04,374 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-05-03 18:00:04,374 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-05-03 18:00:04,374 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-05-03 18:00:04,374 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-05-03 18:00:04,374 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-05-03 18:00:04,375 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-05-03 18:00:04,628 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-03 18:00:04,628 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-05-03 18:00:04,629 INFO L202 PluginConnector]: Adding new model exp2x9.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.05 06:00:04 BoogieIcfgContainer [2021-05-03 18:00:04,629 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-03 18:00:04,630 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-03 18:00:04,630 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-03 18:00:04,632 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-03 18:00:04,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "exp2x9.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.05 06:00:04" (1/2) ... [2021-05-03 18:00:04,633 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e33991f and model type exp2x9.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.05 06:00:04, skipping insertion in model container [2021-05-03 18:00:04,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "exp2x9.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.05 06:00:04" (2/2) ... [2021-05-03 18:00:04,634 INFO L111 eAbstractionObserver]: Analyzing ICFG exp2x9.wvr.bpl [2021-05-03 18:00:04,654 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-05-03 18:00:04,655 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-03 18:00:04,657 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-03 18:00:04,658 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-05-03 18:00:04,738 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-05-03 18:00:04,749 INFO L253 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 [2021-05-03 18:00:04,792 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-03 18:00:04,792 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-03 18:00:04,793 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-03 18:00:04,793 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-03 18:00:04,793 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-03 18:00:04,793 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-03 18:00:04,793 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-03 18:00:04,793 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-03 18:00:05,305 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 18:00:05,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 18:00:05,312 INFO L82 PathProgramCache]: Analyzing trace with hash -671307486, now seen corresponding path program 1 times [2021-05-03 18:00:05,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 18:00:05,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952265787] [2021-05-03 18:00:05,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 18:00:05,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 18:00:05,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 18:00:05,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952265787] [2021-05-03 18:00:05,469 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 18:00:05,469 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-05-03 18:00:05,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345271738] [2021-05-03 18:00:05,473 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-03 18:00:05,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 18:00:05,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-03 18:00:05,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-03 18:00:05,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-05-03 18:00:05,484 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-05-03 18:00:05,485 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 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) [2021-05-03 18:00:05,486 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-05-03 18:00:05,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-03 18:00:05,630 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-03 18:00:05,631 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 18:00:05,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 18:00:05,633 INFO L82 PathProgramCache]: Analyzing trace with hash -250528579, now seen corresponding path program 1 times [2021-05-03 18:00:05,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 18:00:05,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992468625] [2021-05-03 18:00:05,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 18:00:05,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 18:00:05,715 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 18:00:05,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992468625] [2021-05-03 18:00:05,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463735072] [2021-05-03 18:00:05,716 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 [2021-05-03 18:00:05,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 18:00:05,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 3 conjunts are in the unsatisfiable core [2021-05-03 18:00:05,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-03 18:00:05,947 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 18:00:05,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-03 18:00:05,948 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 5 [2021-05-03 18:00:05,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620535368] [2021-05-03 18:00:05,949 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-03 18:00:05,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 18:00:05,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-03 18:00:05,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-05-03 18:00:05,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-05-03 18:00:05,956 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-05-03 18:00:05,957 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 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) [2021-05-03 18:00:05,957 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-05-03 18:00:05,957 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-05-03 18:00:06,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-03 18:00:06,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-03 18:00:06,294 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-03 18:00:06,295 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 18:00:06,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 18:00:06,295 INFO L82 PathProgramCache]: Analyzing trace with hash -1410383358, now seen corresponding path program 1 times [2021-05-03 18:00:06,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 18:00:06,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412800829] [2021-05-03 18:00:06,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 18:00:06,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 18:00:06,442 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 18:00:06,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412800829] [2021-05-03 18:00:06,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823200600] [2021-05-03 18:00:06,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-03 18:00:06,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 18:00:06,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 33 conjunts are in the unsatisfiable core [2021-05-03 18:00:06,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-03 18:00:07,276 WARN L340 FreeRefinementEngine]: Global settings require throwing the following exception [2021-05-03 18:00:07,488 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-03 18:00:07,489 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$IDerHelper.tryToEliminateSbr(DualJunctionDer.java:328) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionDer.tryToEliminateOne(DualJunctionDer.java:231) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionDer.tryExhaustivelyToEliminate(DualJunctionDer.java:198) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionDer.tryToEliminateOne(DualJunctionDer.java:182) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionDer.tryExhaustivelyToEliminate(DualJunctionDer.java:149) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionDer.tryToEliminate(DualJunctionDer.java:127) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:862) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:828) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:746) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective2(QuantifierPusher.java:383) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:315) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.convert(QuantifierPusher.java:227) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.cacheConvert(TermTransformer.java:131) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer$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:289) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:189) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:179) 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:640) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:437) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) 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.iterateAllErrorsAtOnce(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:171) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:131) 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) [2021-05-03 18:00:07,498 INFO L168 Benchmark]: Toolchain (without parser) took 3247.47 ms. Allocated memory is still 327.2 MB. Free memory was 306.4 MB in the beginning and 254.2 MB in the end (delta: 52.2 MB). Peak memory consumption was 53.5 MB. Max. memory is 16.0 GB. [2021-05-03 18:00:07,499 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.13 ms. Allocated memory is still 327.2 MB. Free memory is still 307.6 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-05-03 18:00:07,500 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.84 ms. Allocated memory is still 327.2 MB. Free memory was 306.3 MB in the beginning and 304.9 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-05-03 18:00:07,500 INFO L168 Benchmark]: Boogie Preprocessor took 21.61 ms. Allocated memory is still 327.2 MB. Free memory was 304.9 MB in the beginning and 303.8 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-05-03 18:00:07,500 INFO L168 Benchmark]: RCFGBuilder took 321.54 ms. Allocated memory is still 327.2 MB. Free memory was 303.8 MB in the beginning and 289.9 MB in the end (delta: 13.9 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. [2021-05-03 18:00:07,500 INFO L168 Benchmark]: TraceAbstraction took 2867.42 ms. Allocated memory is still 327.2 MB. Free memory was 289.6 MB in the beginning and 254.2 MB in the end (delta: 35.3 MB). Peak memory consumption was 36.8 MB. Max. memory is 16.0 GB. [2021-05-03 18:00:07,502 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 0.13 ms. Allocated memory is still 327.2 MB. Free memory is still 307.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 30.84 ms. Allocated memory is still 327.2 MB. Free memory was 306.3 MB in the beginning and 304.9 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 21.61 ms. Allocated memory is still 327.2 MB. Free memory was 304.9 MB in the beginning and 303.8 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 321.54 ms. Allocated memory is still 327.2 MB. Free memory was 303.8 MB in the beginning and 289.9 MB in the end (delta: 13.9 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2867.42 ms. Allocated memory is still 327.2 MB. Free memory was 289.6 MB in the beginning and 254.2 MB in the end (delta: 35.3 MB). Peak memory consumption was 36.8 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...