/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/bench/exp2x6.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2cf4d3f9dd5fed411db405f577e28237a543b59a-2cf4d3f [2021-08-12 19:02:43,661 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-12 19:02:43,663 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-12 19:02:43,692 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-08-12 19:02:43,707 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-12 19:02:43,708 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-12 19:02:43,709 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-12 19:02:43,712 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-12 19:02:43,714 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-12 19:02:43,715 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-12 19:02:43,716 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-12 19:02:43,720 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-12 19:02:43,721 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-12 19:02:43,722 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-12 19:02:43,723 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-12 19:02:43,724 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-12 19:02:43,729 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-08-12 19:02:43,736 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-12 19:02:43,736 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-12 19:02:43,737 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-12 19:02:43,740 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-FA-NoLbe.epf [2021-08-12 19:02:43,762 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-12 19:02:43,763 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-12 19:02:43,763 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-12 19:02:43,763 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-12 19:02:43,765 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-12 19:02:43,765 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-12 19:02:43,766 INFO L138 SettingsManager]: * Use SBE=true [2021-08-12 19:02:43,766 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-12 19:02:43,766 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-12 19:02:43,766 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-12 19:02:43,767 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-12 19:02:43,767 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-12 19:02:43,767 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-12 19:02:43,767 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-12 19:02:43,767 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-12 19:02:43,767 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-12 19:02:43,767 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-12 19:02:43,767 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-12 19:02:43,767 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-12 19:02:43,768 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-12 19:02:43,768 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-12 19:02:43,768 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-12 19:02:43,768 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-12 19:02:43,768 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-12 19:02:43,768 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-12 19:02:43,768 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-12 19:02:43,768 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-12 19:02:43,768 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-12 19:02:43,768 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-12 19:02:43,769 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-12 19:02:43,769 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-12 19:02:44,109 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-12 19:02:44,130 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-12 19:02:44,132 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-12 19:02:44,133 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-08-12 19:02:44,134 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-08-12 19:02:44,135 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/bench/exp2x6.wvr.bpl [2021-08-12 19:02:44,135 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/bench/exp2x6.wvr.bpl' [2021-08-12 19:02:44,174 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-12 19:02:44,176 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-08-12 19:02:44,176 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-12 19:02:44,176 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-12 19:02:44,177 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-12 19:02:44,185 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 07:02:44" (1/1) ... [2021-08-12 19:02:44,191 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 07:02:44" (1/1) ... [2021-08-12 19:02:44,196 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-12 19:02:44,198 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-12 19:02:44,198 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-12 19:02:44,198 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-12 19:02:44,203 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 07:02:44" (1/1) ... [2021-08-12 19:02:44,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 07:02:44" (1/1) ... [2021-08-12 19:02:44,205 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 07:02:44" (1/1) ... [2021-08-12 19:02:44,205 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 07:02:44" (1/1) ... [2021-08-12 19:02:44,208 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 07:02:44" (1/1) ... [2021-08-12 19:02:44,211 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 07:02:44" (1/1) ... [2021-08-12 19:02:44,212 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 07:02:44" (1/1) ... [2021-08-12 19:02:44,216 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-12 19:02:44,217 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-12 19:02:44,217 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-12 19:02:44,217 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-12 19:02:44,218 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 07:02:44" (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 [2021-08-12 19:02:44,275 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-08-12 19:02:44,276 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-08-12 19:02:44,276 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-08-12 19:02:44,276 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-08-12 19:02:44,276 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-08-12 19:02:44,276 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-08-12 19:02:44,276 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-08-12 19:02:44,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-12 19:02:44,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-12 19:02:44,276 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-08-12 19:02:44,277 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-08-12 19:02:44,277 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-08-12 19:02:44,277 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-08-12 19:02:44,277 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-08-12 19:02:44,277 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-08-12 19:02:44,278 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-12 19:02:44,405 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-12 19:02:44,406 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-08-12 19:02:44,407 INFO L202 PluginConnector]: Adding new model exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.08 07:02:44 BoogieIcfgContainer [2021-08-12 19:02:44,407 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-12 19:02:44,408 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-12 19:02:44,408 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-12 19:02:44,410 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-12 19:02:44,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 07:02:44" (1/2) ... [2021-08-12 19:02:44,411 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13a664dd and model type exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.08 07:02:44, skipping insertion in model container [2021-08-12 19:02:44,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.08 07:02:44" (2/2) ... [2021-08-12 19:02:44,411 INFO L111 eAbstractionObserver]: Analyzing ICFG exp2x6.wvr.bpl [2021-08-12 19:02:44,415 INFO L206 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-12 19:02:44,415 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-12 19:02:44,415 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-12 19:02:44,450 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-08-12 19:02:44,463 INFO L255 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-08-12 19:02:44,475 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-12 19:02:44,475 INFO L379 AbstractCegarLoop]: Hoare is true [2021-08-12 19:02:44,475 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-12 19:02:44,475 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-12 19:02:44,475 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-12 19:02:44,476 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-12 19:02:44,476 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-12 19:02:44,476 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-12 19:02:44,481 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 54 places, 45 transitions, 122 flow [2021-08-12 19:02:44,729 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 3206 states, 3204 states have (on average 3.956616729088639) internal successors, (12677), 3205 states have internal predecessors, (12677), 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) [2021-08-12 19:02:44,741 INFO L276 IsEmpty]: Start isEmpty. Operand has 3206 states, 3204 states have (on average 3.956616729088639) internal successors, (12677), 3205 states have internal predecessors, (12677), 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) [2021-08-12 19:02:44,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-08-12 19:02:44,762 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:02:44,763 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 19:02:44,763 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 19:02:44,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:02:44,767 INFO L82 PathProgramCache]: Analyzing trace with hash -176416249, now seen corresponding path program 1 times [2021-08-12 19:02:44,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:02:44,772 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90135137] [2021-08-12 19:02:44,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:02:44,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:02:44,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:02:44,907 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:02:44,908 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90135137] [2021-08-12 19:02:44,908 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90135137] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:02:44,908 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:02:44,908 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-12 19:02:44,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101160017] [2021-08-12 19:02:44,911 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-12 19:02:44,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:02:44,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-12 19:02:44,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-12 19:02:44,930 INFO L87 Difference]: Start difference. First operand has 3206 states, 3204 states have (on average 3.956616729088639) internal successors, (12677), 3205 states have internal predecessors, (12677), 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) Second operand 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) [2021-08-12 19:02:45,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:02:45,111 INFO L93 Difference]: Finished difference Result 3633 states and 14329 transitions. [2021-08-12 19:02:45,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-12 19:02:45,113 INFO L78 Accepts]: Start accepts. 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) Word has length 19 [2021-08-12 19:02:45,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:02:45,154 INFO L225 Difference]: With dead ends: 3633 [2021-08-12 19:02:45,154 INFO L226 Difference]: Without dead ends: 3598 [2021-08-12 19:02:45,157 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-12 19:02:45,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3598 states. [2021-08-12 19:02:45,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3598 to 3333. [2021-08-12 19:02:45,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3333 states, 3332 states have (on average 3.952280912364946) internal successors, (13169), 3332 states have internal predecessors, (13169), 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) [2021-08-12 19:02:45,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3333 states to 3333 states and 13169 transitions. [2021-08-12 19:02:45,391 INFO L78 Accepts]: Start accepts. Automaton has 3333 states and 13169 transitions. Word has length 19 [2021-08-12 19:02:45,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:02:45,392 INFO L482 AbstractCegarLoop]: Abstraction has 3333 states and 13169 transitions. [2021-08-12 19:02:45,393 INFO L483 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) [2021-08-12 19:02:45,393 INFO L276 IsEmpty]: Start isEmpty. Operand 3333 states and 13169 transitions. [2021-08-12 19:02:45,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-08-12 19:02:45,427 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:02:45,428 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 19:02:45,428 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-12 19:02:45,428 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 19:02:45,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:02:45,431 INFO L82 PathProgramCache]: Analyzing trace with hash -1596364547, now seen corresponding path program 1 times [2021-08-12 19:02:45,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:02:45,432 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761593582] [2021-08-12 19:02:45,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:02:45,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:02:45,488 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:02:45,488 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:02:45,488 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761593582] [2021-08-12 19:02:45,489 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761593582] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-12 19:02:45,489 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370435777] [2021-08-12 19:02:45,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-12 19:02:45,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:02:45,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjunts are in the unsatisfiable core [2021-08-12 19:02:45,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-12 19:02:45,650 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:02:45,650 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1370435777] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-12 19:02:45,650 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-12 19:02:45,651 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-08-12 19:02:45,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723712787] [2021-08-12 19:02:45,652 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-08-12 19:02:45,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:02:45,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-12 19:02:45,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-12 19:02:45,653 INFO L87 Difference]: Start difference. First operand 3333 states and 13169 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2021-08-12 19:02:45,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:02:45,933 INFO L93 Difference]: Finished difference Result 7291 states and 28342 transitions. [2021-08-12 19:02:45,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-12 19:02:45,934 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 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) Word has length 24 [2021-08-12 19:02:45,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:02:45,973 INFO L225 Difference]: With dead ends: 7291 [2021-08-12 19:02:45,973 INFO L226 Difference]: Without dead ends: 6091 [2021-08-12 19:02:45,980 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-12 19:02:46,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6091 states. [2021-08-12 19:02:46,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6091 to 3780. [2021-08-12 19:02:46,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3780 states, 3779 states have (on average 3.988885948663668) internal successors, (15074), 3779 states have internal predecessors, (15074), 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) [2021-08-12 19:02:46,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3780 states to 3780 states and 15074 transitions. [2021-08-12 19:02:46,188 INFO L78 Accepts]: Start accepts. Automaton has 3780 states and 15074 transitions. Word has length 24 [2021-08-12 19:02:46,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:02:46,189 INFO L482 AbstractCegarLoop]: Abstraction has 3780 states and 15074 transitions. [2021-08-12 19:02:46,189 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2021-08-12 19:02:46,189 INFO L276 IsEmpty]: Start isEmpty. Operand 3780 states and 15074 transitions. [2021-08-12 19:02:46,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-08-12 19:02:46,199 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:02:46,199 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 19:02:46,415 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-08-12 19:02:46,416 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 19:02:46,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:02:46,416 INFO L82 PathProgramCache]: Analyzing trace with hash 787684274, now seen corresponding path program 1 times [2021-08-12 19:02:46,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:02:46,417 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738483627] [2021-08-12 19:02:46,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:02:46,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:02:46,437 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:02:46,437 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:02:46,437 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738483627] [2021-08-12 19:02:46,437 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738483627] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:02:46,437 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:02:46,437 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-12 19:02:46,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046601998] [2021-08-12 19:02:46,438 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-08-12 19:02:46,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:02:46,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-12 19:02:46,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-12 19:02:46,439 INFO L87 Difference]: Start difference. First operand 3780 states and 15074 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2021-08-12 19:02:46,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:02:46,795 INFO L93 Difference]: Finished difference Result 5846 states and 22542 transitions. [2021-08-12 19:02:46,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-12 19:02:46,796 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 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) Word has length 24 [2021-08-12 19:02:46,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:02:46,840 INFO L225 Difference]: With dead ends: 5846 [2021-08-12 19:02:46,841 INFO L226 Difference]: Without dead ends: 4883 [2021-08-12 19:02:46,843 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-12 19:02:46,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4883 states. [2021-08-12 19:02:46,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4883 to 3892. [2021-08-12 19:02:46,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3892 states, 3891 states have (on average 3.9671035723464403) internal successors, (15436), 3891 states have internal predecessors, (15436), 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) [2021-08-12 19:02:46,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3892 states to 3892 states and 15436 transitions. [2021-08-12 19:02:46,965 INFO L78 Accepts]: Start accepts. Automaton has 3892 states and 15436 transitions. Word has length 24 [2021-08-12 19:02:46,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:02:46,965 INFO L482 AbstractCegarLoop]: Abstraction has 3892 states and 15436 transitions. [2021-08-12 19:02:46,965 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2021-08-12 19:02:46,966 INFO L276 IsEmpty]: Start isEmpty. Operand 3892 states and 15436 transitions. [2021-08-12 19:02:46,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-08-12 19:02:46,975 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:02:46,975 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 19:02:46,975 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-12 19:02:46,976 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 19:02:46,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:02:46,976 INFO L82 PathProgramCache]: Analyzing trace with hash 1247895235, now seen corresponding path program 1 times [2021-08-12 19:02:46,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:02:46,976 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960797867] [2021-08-12 19:02:46,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:02:46,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:02:46,996 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:02:46,996 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:02:46,996 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960797867] [2021-08-12 19:02:46,996 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960797867] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-12 19:02:46,996 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141352913] [2021-08-12 19:02:46,996 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 [2021-08-12 19:02:47,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:02:47,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjunts are in the unsatisfiable core [2021-08-12 19:02:47,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-12 19:02:47,083 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:02:47,083 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2141352913] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-12 19:02:47,083 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-12 19:02:47,084 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-08-12 19:02:47,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452652602] [2021-08-12 19:02:47,084 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-08-12 19:02:47,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:02:47,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-12 19:02:47,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-12 19:02:47,085 INFO L87 Difference]: Start difference. First operand 3892 states and 15436 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2021-08-12 19:02:47,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:02:47,372 INFO L93 Difference]: Finished difference Result 7536 states and 29472 transitions. [2021-08-12 19:02:47,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-12 19:02:47,373 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 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) Word has length 24 [2021-08-12 19:02:47,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:02:47,403 INFO L225 Difference]: With dead ends: 7536 [2021-08-12 19:02:47,404 INFO L226 Difference]: Without dead ends: 6588 [2021-08-12 19:02:47,406 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-12 19:02:47,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6588 states. [2021-08-12 19:02:47,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6588 to 4463. [2021-08-12 19:02:47,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4463 states, 4462 states have (on average 4.017480950246526) internal successors, (17926), 4462 states have internal predecessors, (17926), 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) [2021-08-12 19:02:47,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4463 states to 4463 states and 17926 transitions. [2021-08-12 19:02:47,600 INFO L78 Accepts]: Start accepts. Automaton has 4463 states and 17926 transitions. Word has length 24 [2021-08-12 19:02:47,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:02:47,601 INFO L482 AbstractCegarLoop]: Abstraction has 4463 states and 17926 transitions. [2021-08-12 19:02:47,601 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2021-08-12 19:02:47,601 INFO L276 IsEmpty]: Start isEmpty. Operand 4463 states and 17926 transitions. [2021-08-12 19:02:47,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-08-12 19:02:47,611 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:02:47,611 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 19:02:47,828 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-12 19:02:47,828 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 19:02:47,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:02:47,828 INFO L82 PathProgramCache]: Analyzing trace with hash 4371448, now seen corresponding path program 1 times [2021-08-12 19:02:47,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:02:47,829 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937269758] [2021-08-12 19:02:47,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:02:47,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:02:47,849 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:02:47,849 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:02:47,850 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937269758] [2021-08-12 19:02:47,850 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937269758] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:02:47,850 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:02:47,850 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-12 19:02:47,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916416810] [2021-08-12 19:02:47,850 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-08-12 19:02:47,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:02:47,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-12 19:02:47,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-12 19:02:47,851 INFO L87 Difference]: Start difference. First operand 4463 states and 17926 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2021-08-12 19:02:48,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:02:48,084 INFO L93 Difference]: Finished difference Result 6583 states and 25625 transitions. [2021-08-12 19:02:48,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-12 19:02:48,085 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 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) Word has length 24 [2021-08-12 19:02:48,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:02:48,115 INFO L225 Difference]: With dead ends: 6583 [2021-08-12 19:02:48,115 INFO L226 Difference]: Without dead ends: 5622 [2021-08-12 19:02:48,118 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-12 19:02:48,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5622 states. [2021-08-12 19:02:48,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5622 to 4591. [2021-08-12 19:02:48,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4591 states, 4590 states have (on average 3.9971677559912853) internal successors, (18347), 4590 states have internal predecessors, (18347), 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) [2021-08-12 19:02:48,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4591 states to 4591 states and 18347 transitions. [2021-08-12 19:02:48,300 INFO L78 Accepts]: Start accepts. Automaton has 4591 states and 18347 transitions. Word has length 24 [2021-08-12 19:02:48,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:02:48,300 INFO L482 AbstractCegarLoop]: Abstraction has 4591 states and 18347 transitions. [2021-08-12 19:02:48,300 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2021-08-12 19:02:48,301 INFO L276 IsEmpty]: Start isEmpty. Operand 4591 states and 18347 transitions. [2021-08-12 19:02:48,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-08-12 19:02:48,309 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:02:48,309 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 19:02:48,310 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-12 19:02:48,310 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 19:02:48,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:02:48,310 INFO L82 PathProgramCache]: Analyzing trace with hash 979513020, now seen corresponding path program 2 times [2021-08-12 19:02:48,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:02:48,310 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231295278] [2021-08-12 19:02:48,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:02:48,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:02:48,326 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:02:48,326 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:02:48,326 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231295278] [2021-08-12 19:02:48,326 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231295278] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:02:48,326 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:02:48,326 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-12 19:02:48,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796977601] [2021-08-12 19:02:48,327 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-08-12 19:02:48,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:02:48,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-12 19:02:48,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-12 19:02:48,327 INFO L87 Difference]: Start difference. First operand 4591 states and 18347 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2021-08-12 19:02:48,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:02:48,585 INFO L93 Difference]: Finished difference Result 6901 states and 27302 transitions. [2021-08-12 19:02:48,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-12 19:02:48,585 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 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) Word has length 24 [2021-08-12 19:02:48,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:02:48,609 INFO L225 Difference]: With dead ends: 6901 [2021-08-12 19:02:48,610 INFO L226 Difference]: Without dead ends: 5958 [2021-08-12 19:02:48,613 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-12 19:02:48,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5958 states. [2021-08-12 19:02:48,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5958 to 5142. [2021-08-12 19:02:48,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5142 states, 5141 states have (on average 3.9941645594242363) internal successors, (20534), 5141 states have internal predecessors, (20534), 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) [2021-08-12 19:02:48,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5142 states to 5142 states and 20534 transitions. [2021-08-12 19:02:48,775 INFO L78 Accepts]: Start accepts. Automaton has 5142 states and 20534 transitions. Word has length 24 [2021-08-12 19:02:48,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:02:48,776 INFO L482 AbstractCegarLoop]: Abstraction has 5142 states and 20534 transitions. [2021-08-12 19:02:48,776 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2021-08-12 19:02:48,776 INFO L276 IsEmpty]: Start isEmpty. Operand 5142 states and 20534 transitions. [2021-08-12 19:02:48,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-08-12 19:02:48,786 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:02:48,786 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 19:02:48,786 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-12 19:02:48,786 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 19:02:48,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:02:48,787 INFO L82 PathProgramCache]: Analyzing trace with hash -1301374515, now seen corresponding path program 2 times [2021-08-12 19:02:48,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:02:48,787 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496211366] [2021-08-12 19:02:48,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:02:48,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:02:48,802 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:02:48,802 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:02:48,802 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496211366] [2021-08-12 19:02:48,802 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496211366] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:02:48,802 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:02:48,802 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-12 19:02:48,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24127292] [2021-08-12 19:02:48,802 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-08-12 19:02:48,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:02:48,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-12 19:02:48,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-12 19:02:48,803 INFO L87 Difference]: Start difference. First operand 5142 states and 20534 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2021-08-12 19:02:48,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:02:48,997 INFO L93 Difference]: Finished difference Result 6905 states and 26774 transitions. [2021-08-12 19:02:48,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-12 19:02:48,998 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 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) Word has length 24 [2021-08-12 19:02:48,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:02:49,023 INFO L225 Difference]: With dead ends: 6905 [2021-08-12 19:02:49,023 INFO L226 Difference]: Without dead ends: 5926 [2021-08-12 19:02:49,027 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-12 19:02:49,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5926 states. [2021-08-12 19:02:49,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5926 to 5271. [2021-08-12 19:02:49,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5271 states, 5270 states have (on average 3.97438330170778) internal successors, (20945), 5270 states have internal predecessors, (20945), 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) [2021-08-12 19:02:49,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5271 states to 5271 states and 20945 transitions. [2021-08-12 19:02:49,275 INFO L78 Accepts]: Start accepts. Automaton has 5271 states and 20945 transitions. Word has length 24 [2021-08-12 19:02:49,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:02:49,275 INFO L482 AbstractCegarLoop]: Abstraction has 5271 states and 20945 transitions. [2021-08-12 19:02:49,275 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2021-08-12 19:02:49,275 INFO L276 IsEmpty]: Start isEmpty. Operand 5271 states and 20945 transitions. [2021-08-12 19:02:49,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-08-12 19:02:49,287 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:02:49,287 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 19:02:49,287 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-12 19:02:49,288 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 19:02:49,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:02:49,288 INFO L82 PathProgramCache]: Analyzing trace with hash -1091376970, now seen corresponding path program 2 times [2021-08-12 19:02:49,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:02:49,289 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898072116] [2021-08-12 19:02:49,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:02:49,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:02:49,322 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:02:49,322 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:02:49,322 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898072116] [2021-08-12 19:02:49,322 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898072116] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:02:49,322 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:02:49,322 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-12 19:02:49,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479623553] [2021-08-12 19:02:49,323 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-08-12 19:02:49,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:02:49,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-12 19:02:49,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-12 19:02:49,323 INFO L87 Difference]: Start difference. First operand 5271 states and 20945 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2021-08-12 19:02:49,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:02:49,535 INFO L93 Difference]: Finished difference Result 8361 states and 32884 transitions. [2021-08-12 19:02:49,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-12 19:02:49,535 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 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) Word has length 24 [2021-08-12 19:02:49,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:02:49,565 INFO L225 Difference]: With dead ends: 8361 [2021-08-12 19:02:49,565 INFO L226 Difference]: Without dead ends: 7039 [2021-08-12 19:02:49,569 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-12 19:02:49,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7039 states. [2021-08-12 19:02:49,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7039 to 5864. [2021-08-12 19:02:49,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5864 states, 5863 states have (on average 3.980897151628859) internal successors, (23340), 5863 states have internal predecessors, (23340), 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) [2021-08-12 19:02:49,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5864 states to 5864 states and 23340 transitions. [2021-08-12 19:02:49,903 INFO L78 Accepts]: Start accepts. Automaton has 5864 states and 23340 transitions. Word has length 24 [2021-08-12 19:02:49,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:02:49,903 INFO L482 AbstractCegarLoop]: Abstraction has 5864 states and 23340 transitions. [2021-08-12 19:02:49,903 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2021-08-12 19:02:49,903 INFO L276 IsEmpty]: Start isEmpty. Operand 5864 states and 23340 transitions. [2021-08-12 19:02:49,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-08-12 19:02:49,916 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:02:49,916 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 19:02:49,916 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-12 19:02:49,916 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 19:02:49,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:02:49,917 INFO L82 PathProgramCache]: Analyzing trace with hash 815941149, now seen corresponding path program 2 times [2021-08-12 19:02:49,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:02:49,918 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627514199] [2021-08-12 19:02:49,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:02:49,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:02:49,950 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:02:49,950 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:02:49,950 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627514199] [2021-08-12 19:02:49,950 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627514199] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:02:49,950 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:02:49,951 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-12 19:02:49,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897214479] [2021-08-12 19:02:49,952 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-08-12 19:02:49,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:02:49,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-12 19:02:49,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-12 19:02:49,952 INFO L87 Difference]: Start difference. First operand 5864 states and 23340 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2021-08-12 19:02:50,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:02:50,232 INFO L93 Difference]: Finished difference Result 8633 states and 33340 transitions. [2021-08-12 19:02:50,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-12 19:02:50,235 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 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) Word has length 24 [2021-08-12 19:02:50,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:02:50,264 INFO L225 Difference]: With dead ends: 8633 [2021-08-12 19:02:50,264 INFO L226 Difference]: Without dead ends: 6943 [2021-08-12 19:02:50,269 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-12 19:02:50,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6943 states. [2021-08-12 19:02:50,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6943 to 6067. [2021-08-12 19:02:50,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6067 states, 6066 states have (on average 3.9658753709198815) internal successors, (24057), 6066 states have internal predecessors, (24057), 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) [2021-08-12 19:02:50,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6067 states to 6067 states and 24057 transitions. [2021-08-12 19:02:50,497 INFO L78 Accepts]: Start accepts. Automaton has 6067 states and 24057 transitions. Word has length 24 [2021-08-12 19:02:50,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:02:50,499 INFO L482 AbstractCegarLoop]: Abstraction has 6067 states and 24057 transitions. [2021-08-12 19:02:50,499 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2021-08-12 19:02:50,499 INFO L276 IsEmpty]: Start isEmpty. Operand 6067 states and 24057 transitions. [2021-08-12 19:02:50,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-08-12 19:02:50,512 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:02:50,512 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 19:02:50,512 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-12 19:02:50,513 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 19:02:50,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:02:50,513 INFO L82 PathProgramCache]: Analyzing trace with hash -746670468, now seen corresponding path program 1 times [2021-08-12 19:02:50,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:02:50,513 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050603981] [2021-08-12 19:02:50,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:02:50,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:02:50,630 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:02:50,631 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:02:50,631 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050603981] [2021-08-12 19:02:50,631 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050603981] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-12 19:02:50,631 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496783308] [2021-08-12 19:02:50,631 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 [2021-08-12 19:02:50,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:02:50,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 21 conjunts are in the unsatisfiable core [2021-08-12 19:02:50,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-12 19:02:51,114 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:02:51,114 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [496783308] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-12 19:02:51,114 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-12 19:02:51,114 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10] total 10 [2021-08-12 19:02:51,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276703477] [2021-08-12 19:02:51,115 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-08-12 19:02:51,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:02:51,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-12 19:02:51,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-08-12 19:02:51,116 INFO L87 Difference]: Start difference. First operand 6067 states and 24057 transitions. Second operand has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 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) [2021-08-12 19:02:52,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:02:52,180 INFO L93 Difference]: Finished difference Result 8501 states and 33000 transitions. [2021-08-12 19:02:52,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-12 19:02:52,180 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 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) Word has length 29 [2021-08-12 19:02:52,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:02:52,209 INFO L225 Difference]: With dead ends: 8501 [2021-08-12 19:02:52,210 INFO L226 Difference]: Without dead ends: 8363 [2021-08-12 19:02:52,212 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 6 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 142.3ms TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-08-12 19:02:52,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8363 states. [2021-08-12 19:02:52,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8363 to 6744. [2021-08-12 19:02:52,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6744 states, 6743 states have (on average 3.9549162094023433) internal successors, (26668), 6743 states have internal predecessors, (26668), 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) [2021-08-12 19:02:52,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6744 states to 6744 states and 26668 transitions. [2021-08-12 19:02:52,437 INFO L78 Accepts]: Start accepts. Automaton has 6744 states and 26668 transitions. Word has length 29 [2021-08-12 19:02:52,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:02:52,437 INFO L482 AbstractCegarLoop]: Abstraction has 6744 states and 26668 transitions. [2021-08-12 19:02:52,437 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 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) [2021-08-12 19:02:52,437 INFO L276 IsEmpty]: Start isEmpty. Operand 6744 states and 26668 transitions. [2021-08-12 19:02:52,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-08-12 19:02:52,452 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:02:52,452 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 19:02:52,669 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-08-12 19:02:52,669 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 19:02:52,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:02:52,670 INFO L82 PathProgramCache]: Analyzing trace with hash 1040906004, now seen corresponding path program 2 times [2021-08-12 19:02:52,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:02:52,670 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94230174] [2021-08-12 19:02:52,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:02:52,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:02:52,741 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-12 19:02:52,741 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:02:52,741 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94230174] [2021-08-12 19:02:52,741 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94230174] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-12 19:02:52,741 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996483449] [2021-08-12 19:02:52,741 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 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 [2021-08-12 19:02:52,789 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-12 19:02:52,789 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-12 19:02:52,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 21 conjunts are in the unsatisfiable core [2021-08-12 19:02:52,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-12 19:02:53,068 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:02:53,068 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1996483449] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-12 19:02:53,068 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-12 19:02:53,069 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10] total 11 [2021-08-12 19:02:53,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315857059] [2021-08-12 19:02:53,069 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-08-12 19:02:53,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:02:53,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-12 19:02:53,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-08-12 19:02:53,070 INFO L87 Difference]: Start difference. First operand 6744 states and 26668 transitions. Second operand has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 11 states have internal predecessors, (49), 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) [2021-08-12 19:02:54,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:02:54,298 INFO L93 Difference]: Finished difference Result 10096 states and 39065 transitions. [2021-08-12 19:02:54,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-12 19:02:54,299 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 11 states have internal predecessors, (49), 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) Word has length 29 [2021-08-12 19:02:54,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:02:54,336 INFO L225 Difference]: With dead ends: 10096 [2021-08-12 19:02:54,336 INFO L226 Difference]: Without dead ends: 9890 [2021-08-12 19:02:54,341 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 5 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 171.3ms TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-08-12 19:02:54,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9890 states. [2021-08-12 19:02:54,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9890 to 7521. [2021-08-12 19:02:54,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7521 states, 7520 states have (on average 3.9558510638297872) internal successors, (29748), 7520 states have internal predecessors, (29748), 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) [2021-08-12 19:02:54,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7521 states to 7521 states and 29748 transitions. [2021-08-12 19:02:54,615 INFO L78 Accepts]: Start accepts. Automaton has 7521 states and 29748 transitions. Word has length 29 [2021-08-12 19:02:54,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:02:54,615 INFO L482 AbstractCegarLoop]: Abstraction has 7521 states and 29748 transitions. [2021-08-12 19:02:54,615 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 11 states have internal predecessors, (49), 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) [2021-08-12 19:02:54,616 INFO L276 IsEmpty]: Start isEmpty. Operand 7521 states and 29748 transitions. [2021-08-12 19:02:54,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-08-12 19:02:54,632 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:02:54,632 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 19:02:54,847 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-12 19:02:54,848 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 19:02:54,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:02:54,849 INFO L82 PathProgramCache]: Analyzing trace with hash 984395042, now seen corresponding path program 3 times [2021-08-12 19:02:54,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:02:54,849 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015588918] [2021-08-12 19:02:54,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:02:54,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:02:54,917 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-12 19:02:54,917 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:02:54,917 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015588918] [2021-08-12 19:02:54,917 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015588918] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-12 19:02:54,917 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966977627] [2021-08-12 19:02:54,917 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 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 [2021-08-12 19:02:54,942 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-08-12 19:02:54,942 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-12 19:02:54,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 21 conjunts are in the unsatisfiable core [2021-08-12 19:02:54,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-12 19:02:55,179 WARN L348 FreeRefinementEngine]: Global settings require throwing the following exception [2021-08-12 19:02:55,396 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-08-12 19:02:55,396 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_aux_mod_x1_24_53_119 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:639) 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:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:285) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:230) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:161) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:146) 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) [2021-08-12 19:02:55,399 INFO L168 Benchmark]: Toolchain (without parser) took 11223.13 ms. Allocated memory was 176.2 MB in the beginning and 1.6 GB in the end (delta: 1.5 GB). Free memory was 156.7 MB in the beginning and 773.6 MB in the end (delta: -616.9 MB). Peak memory consumption was 843.2 MB. Max. memory is 8.0 GB. [2021-08-12 19:02:55,399 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.11 ms. Allocated memory is still 176.2 MB. Free memory was 157.8 MB in the beginning and 157.7 MB in the end (delta: 88.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-08-12 19:02:55,399 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.32 ms. Allocated memory is still 176.2 MB. Free memory was 156.6 MB in the beginning and 155.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-12 19:02:55,399 INFO L168 Benchmark]: Boogie Preprocessor took 18.54 ms. Allocated memory is still 176.2 MB. Free memory was 155.1 MB in the beginning and 154.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-12 19:02:55,399 INFO L168 Benchmark]: RCFGBuilder took 189.86 ms. Allocated memory is still 176.2 MB. Free memory was 154.0 MB in the beginning and 141.0 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-08-12 19:02:55,399 INFO L168 Benchmark]: TraceAbstraction took 10990.15 ms. Allocated memory was 176.2 MB in the beginning and 1.6 GB in the end (delta: 1.5 GB). Free memory was 140.6 MB in the beginning and 773.6 MB in the end (delta: -633.1 MB). Peak memory consumption was 826.4 MB. Max. memory is 8.0 GB. [2021-08-12 19:02:55,400 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 0.11 ms. Allocated memory is still 176.2 MB. Free memory was 157.8 MB in the beginning and 157.7 MB in the end (delta: 88.2 kB). There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 20.32 ms. Allocated memory is still 176.2 MB. Free memory was 156.6 MB in the beginning and 155.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 18.54 ms. Allocated memory is still 176.2 MB. Free memory was 155.1 MB in the beginning and 154.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 189.86 ms. Allocated memory is still 176.2 MB. Free memory was 154.0 MB in the beginning and 141.0 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 10990.15 ms. Allocated memory was 176.2 MB in the beginning and 1.6 GB in the end (delta: 1.5 GB). Free memory was 140.6 MB in the beginning and 773.6 MB in the end (delta: -633.1 MB). Peak memory consumption was 826.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: Possible infinite loop detected aux_div_aux_div_aux_mod_x1_24_53_119 already exists de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: Possible infinite loop detected aux_div_aux_div_aux_mod_x1_24_53_119 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...